Geothermal at Home

  • Swimmers in Iceland enjoy the toasty Blue Lagoon hot springs. (Photo by Kurt Holtz)

You might be hearing about geothermal energy more and more. But what exactly is geothermal energy? The new federal Energy Act calls for more research and investment into the alternative energy source. Robbie Harris has more on this long used, but little known technology, for tapping the earth’s heat:

Transcript

You might be hearing about geothermal energy more and more. But what exactly is geothermal energy? The new federal Energy Act calls for more research and investment into the alternative energy source. Robbie Harris has more on this long used, but little known technology, for tapping the earth’s heat:


(“Now look at that!” “Wow!”)


(whooshing of geyser)


In Iceland, where geysers gush from the ground and steam rises from the bays, geothermal is the number one source of energy. This island nation in the north Atlantic burns virtually no fossil fuel to heat or cool its buildings.


“You will probably not see a building that is not heated by geothermal
energy during your visit here.”


Pall Valdimarsson is Director of Research and Development with Enix. It’s Iceland’s largest geothermal consulting firm.


“And I myself, I have never lived in a house in Iceland without geothermal
energy, not in my whole life and I am not the youngest one as you can see.”


Valdimarsson says Iceland has used a special technology to tap earth-generated heat since the 1930s. And why not? It’s everywhere on this volcanic island. The first settlers here in the eighth century saw what they called “smoke” rising from the hot springs.


Today, steam blasts from hot water wells at Iceland’s newest, state of the art geothermal plant. The steam spins turbines to make electricity. The superheated water is piped directly into buildings where it gives up its heat. This heat exchange is the core concept behind geothermal technology.


Hans Bennimidgel is a spokesman for the power plant. He says the benefits for Iceland are simple:


“Clean energy and dirt cheap.”


Few places have the hot water resources Iceland has. But according to the Geothermal Resource Council, superheated water is available virtually anywhere in the world, if you drill deep enough.


The U.S. already taps this underground hot water to produce more geothermal electricity than Iceland does. And that’s expected to grow sharply, but for decades Americans have also used a different form of geothermal energy to heat
and cool buildings.


Erik Larson is a vice-president of Indie Energy. He calls it the other geothermal, which is, basically:


“Free heat from the earth and an extremely efficient way to eject heat from
the building in the summer time.”


Larson says geothermal, or geo-exchange systems, are comparable to traditional
heating, ventilation and cooling systems. But they use the earth’s constant underground temperature — around 55 degrees in most of the U.S. — to take the edge off a building’s heating and cooling load:


“Geothermal heat pump technology like we’re talking about can be done
anywhere in the country. Anywhere where there is ground to drill we can
put in our closed loop wells to draw heat from the earth to provide an HVAC
system.”


For a long time in rural areas, large horizontal loops several feet
underground captured and released heat. But in urban areas, there wasn’t
enough land. Now Larson says Indie Energy uses a new drilling technique
known as a vertical closed loop system. He says they can be installed under
almost any building. Pipes inside wells hold a fluid, which continuously
circulates between the ground and the building — creating a heat exchange.
Larson says a geothermal system saves owners money:


“We are a system that you would fully own through the ground loops or these
wells that we put in…through the distribution which is basically happening
within your building. So it adds value to your property, you control it and you
take advantage of all the savings.”


Larson says geothermal systems for buildings cost anywhere from 50 to 100 percent more than a typical heating, cooling, and ventilation system. But he says, most pay for themselves in five to eight years with the energy savings.


Business is booming. Larson says Indie Energy plans to expand in two new locations this year. Four months ago, they installed a large geothermal system at Boocoo Community Center in Evanston, Illinois. During the installation, they helped train new workers in geothermal technology. It was a joint project between Indie Energy and Boocoo. They’re training workers for a new green industry they hope will not only save resources, but create new jobs.


(Sound of hammers in Community Center)


For the Environment Report, I’m Robbie Harris.

Related Links

Searching for New Bio-Diesel Source

The U.S. is looking for ways to depend less on foreign oil and reduce greenhouse
gas emissions. A popular method is so-called bio-fuels. Those are fuels, such as
ethanol or bio-diesel, made from plants. Cleaner burning bio-diesel has been billed
as an environmentally-friendly replacement for our 60 billion gallon a year thirst for
diesel oil. But there aren’t enough crops or land to produce enough bio-diesel to
replace fossil fuel-based diesel. Amy Quinton reports new research is looking at
another way to make bio-diesel: using algae:

Transcript

The U.S. is looking for ways to depend less on foreign oil and reduce greenhouse
gas emissions. A popular method is so-called bio-fuels. Those are fuels, such as
ethanol or bio-diesel, made from plants. Cleaner burning bio-diesel has been billed
as an environmentally-friendly replacement for our 60 billion gallon a year thirst for
diesel oil. But there aren’t enough crops or land to produce enough bio-diesel to
replace fossil fuel-based diesel. Amy Quinton reports new research is looking at
another way to make bio-diesel: using algae:


Bio-diesel is made primarily from plant oils: soybean, canola, rapeseed. Ihab Farag
is a chemical engineering professor at the University of New Hampshire. He climbs
up scaffolding to demonstrate a processor that turns waste oil from the University’s
cafeteria into bio-diesel. Farag says this is more environmentally-friendly than diesel:


“It’s coming from vegetable oil, so therefore it’s cleaner… it doesn’t have the sulfur in it so you
don’t get acid rain issue that you get from diesel, it doesn’t do particulates which are suspect[ed] to be cancer-
causing.”


Almost any diesel engine built in the last 15 years can use bio-diesel, but Farag says
there’s a major drawback: it takes an acre of most crops to produce only 100 gallons
of bio-diesel per year:


“I think it has been estimated that if we are using just something like soybean[s] and want to
produce bio-diesel for the whole country, we need almost an area of land that’s about
two and a half to three times the area of Texas.”


That would be an environmental nightmare because bio-fuels require a lot of fossil
fuels to plant, harvest and process them. They only produce a bit more energy than
the energy needed to make them. It also would put the nation’s fuel needs in conflict
with its food needs. That could drive the price of both sky-high.


So Farag and Master Chemical Engineering student Justin Ferrentino are looking at
another plant. One that’s capable of producing much more oil : algae.
Inside the University’s bio-diesel lab, Ferrentino holds up a glass jar filled with a sea-
green powder:


“This is freeze-dried cells that we’ve grown up in our photo-bioreactor.”


He’s testing different ways of extracting oil from these single-celled algae plants to
produce the most bio-diesel:


“People have projected with micro-algae you can grow somewhere between five and 15,000
gallons per acre per year, so it’s a big difference.”


Compared to 100 gallons per acre of soybeans, it’s a very big difference. Ferrentino
has built a contraption of two small fiberglass tanks, surrounded by florescent lights
and reflectors. It’s called a photo-bioreactor. With the right amount of light, the algae
here grows rapidly:


“When I fill these with growth medium and then add the cells to them and they just
multiply, they divide… they double every ten to 15 hours, when they’re growing
exponentially.”


The more cells, the more oil, and the more bio-diesel. Ferrentino’s photo-bioreactor
is small, producing only a tenth of a gram of bio-diesel. But build one on a larger
scale where there’s lots of sunlight, like the desert Southwest, and it could potentially
produce thousands of gallons on just an acre of land.


And Farag says because carbon is needed to fertilize algae growth, the potential
exists to remove greenhouse gases while simultaneously producing bio-diesel:


“If we can connect it with a wastewater treatment plant, where they have a lot of
waste coming in with lots of carbon in it then you can consume the carbon to grow
the algae and at the same time clean up the wastewater.”


But skeptics say one of the biggest challenges is making algae production
economical. Commercial production would initially yield fuel that could cost between
20 and 50 dollars a gallon. Ferrentino recognizes the drawbacks, but says their
research is worth pursuing:


“I think that our energy needs are not necessarily going to be solved with a magic
bullet, but I think this is certainly one part of it, being that you don’t need arable land
you have the added benefit of maybe being able to use the carbon from flue gases
from power plants, maybe being able to treat wastewater. So, it has some significant
added benefits so it could be one piece of the energy picture.”


But growing algae in the desert or anywhere else doesn’t have the kind of political
appeal that subsidizing farmers to grow soybeans for soy-diesel does. So finding
funding for a commercial-sized algae bio-reactor will face significant obstacles.


For the Environment Report, I’m Amy Quinton.

Related Links

Flex-Fuel Economy Questioned

If you plan to buy a new car or truck this
year, you might find some showrooms filled with
vehicles that run largely on ethanol instead of
gasoline. Car companies are pushing these corn-fueled vehicles as environmentally friendly.
Julie Grant takes a look at those claims:

Transcript

If you plan to buy a new car or truck this
year, you might find some showrooms filled with
vehicles that run largely on ethanol instead of
gasoline. Car companies are pushing these corn-fueled vehicles as environmentally friendly.
Julie Grant takes a look at those claims:


More people are considering buying cleaner, more fuel-efficient
cars now that gas prices and global temperatures are on the rise. The gas-
electric hybrids made by Toyota and Honda are becoming popular. And
American car companies are also jumping on board and offering alternative-
powered vehicles.


General Motors CEO Rick Wagoner has put much of his company’s stock in
ethanol:


“At GM, we believe that the bio-fuel with the greatest potential to
displace petroleum-based fuels in the US is ethanol, and so we have
made a major commitment here to vehicles that can run on E85 ethanol.”


E85 is a blend that’s 85% ethanol with 15% gasoline. GM’s not the only company offering cars that run on them:


(Sound of vehicle introduction)


Angela Hines is from Green Bay, Wisconsin. She’s taking notes as she looks at one
flex fuel car. The E85 only matters to her if it’s going to save her a
few bucks:


“I drive anywhere from 80-200 miles
a day for work, so yeah, gas is important.”


Gui Derochers is looking at a Chevy Silverado pickup truck:


(Grant:) “Does it matter to you that it’s a flex fuel?”


“I think it’s a good thing… flex-fuel. Particularly, we know there are some ethanol plants in Michigan coming, right? Isn’t
that what flex fuel is? Ethanol?”


Derochers works on engines and transmissions:


“You have to remember, I work for Daimler-Chrysler. But we have flex fuel as well. It’s a good thing. It’s wonderful.”


But not everyone thinks the move toward ethanol-fueled cars is
wonderful. Tadeusz Patzek is a professor of civil and environmental
engineering at the University of California in Berkeley. He says
ethanol is not cheaper and it’s not any better for the environment than
regular gas.


Patzek says each gallon of ethanol burned might emit less greenhouse gas
into the air, but you have to burn more fuel to go the same distance:


“So, mile for mile, emissions of CO2 are exactly the same for gasoline as
they are for ethanol. Because they are proportional to the energy stored in
the fuel.”


When it comes to gas mileage, Patzek calls claims that ethanol is any
better then gasoline an imaginary economy… and he’s not alone. When
Consumer Reports magazine tested a Chevy Tahoe that runs on gas mixed
with only ten percent ethanol, the truck got 14 miles per gallon. But
it got less than 11 miles per gallon when the ethanol content was
raised to 85%, as in E85. That’s a 27% drop in fuel economy with E85.


Consumer Reports concluded that to go the same distance, you wind up paying more than a dollar
extra per gallon on E85 then on regular
gas.


Patzek says it’s not a good deal for consumers or for the environment:


“You emit less because you have oxygen but you burn more, so it comes as a wash.”


Patzek says ethanol has other environmental costs. To grow the corn needed to make it, farmers have to use more fossil fuel-based fertilizers, tractor fuel, and then more fuel to truck the fuel to gas stations.


Even so, many scientists say ethanol still provides an energy benefit over fossil fuels and some auto engineers say ethanol cars
are just a stop-gap measure until a better technology comes along, but Patzek disagrees with that logic:


“So, you’re saying the following: why don’t we have a terribly bad
solution and call it a stop-gap solution because it’s politically
convenient. I’m saying is, if I’m an engineer, I have to, essentially, if I’m honest with myself and others, do I want a
better technological solution or do I want to say, let’s do probably the worst possible solution
that delays other solutions 10-15 years into the future… while the
world is running out of time?”


Patzek says the real reason American car companies are moving toward
vehicles that run on E85 is that the federal government rewards them
for it.


GM and the others get extra credit for meeting fuel efficiency
standards just for making cars that can run on E85, even if those cars
aren’t more fuel efficient.


Patzek knows he’s become unpopular among many farmers, engineers,
scientists and politicians who want easy answers. He wants people to
start reducing their energy-use rather than waiting for technological
magic bullets.


For the Environment Report, I’m Julie Grant.

Related Links

Polars Bearing Weight of Global Warming

  • These polar bears lives at the Pittsburgh zoo where food is plentiful. In the wild, however, global warming might be making it harder for the bears to find food. (Photo by Reid Frazier)

If global warming is represented by one symbol, it
might be the polar bear. It’s an icon of the North
Polar region. Now, federal biologists have asked that
polar bears be listed as threatened under the Endangered
Species Act. They’re the first species to be considered
for protection because of global warming. Reid Frazier
reports that the polar bear might help connect the
abstract idea of global warming with the concrete
actions of people in their homes:

Transcript

If global warming is represented by one symbol, it
might be the polar bear. It’s an icon of the North
Polar region. Now, federal biologists have asked that
polar bears be listed as threatened under the Endangered
Species Act. They’re the first species to be considered
for protection because of global warming. Reid Frazier
reports that the polar bear might help connect the
abstract idea of global warming with the concrete
actions of people in their homes:


(Sound of kids talking to polar bears)


Parents and children gather around a large window to watch Nuka and
Koda frolick in the aqua water tank. The polar bears are having a
blast. They splash and dive, play with foam toys, and duck their heads
underwater to look around. The young brothers are only two-years-old
and already they weigh 600 pounds each. These bears, born and raised in
zoos, eat about 18 pounds of food a day. But, their cousins in the wild
are finding food much harder to come by these days.


Henry Kacprzyk is a curator at the Pittsburgh Zoo. He wants crowds to
know just how fragile the bears’ situation is. Walking along a
boardwalk near the exhibit, Kacprzyk points to a sign. It welcomes
visitors to “Piertown,” a replica village designed to resemble a
growing Alaska fishing town:


“The thing to note here is the human population has increased from 110
to 1,712, on the other side the bear population has declined, from 1,784
to 368, which, the message there is, as humans increase in population in some
of the bears’ habitat, the bears go down. It’s a sad but true fact.”


The situation for the world’s 25,000 polar bears is increasingly dire.
Besides people crowding them out, overfishing has depleted arctic
waters of fish for seals to eat, and seals are the bears’ main source
of food.


But here’s the biggest problem: the polar ice cap is melting. That’s
depriving the bears of a main hunting ground. The vast majority of
scientists attribute this to global warming. They say the warming is
caused by a buildup in the atmosphere of greenhouse gases from burning
fossil fuels.


Scott Schliebe is a biologist with the Fish and Wildlife Service. His
team recommended polar bears be added to the protected list because
they’re losing their habitat. Schliebe says the bears need sea ice to
hunt seals. No sea ice means no food for the bears:


“They will wait at a breathing hole for a seal and wait until the seal comes up
and then catch the seal. They’re not effective at hunting seals in open
water, seals have the severe advantage of being able to outpace the polar bears in that environment.”


In areas with receding ice, polar bears are already hurting. Scientists
see the world’s polar bear population shrinking by a third in the next
50 years.


Back at the Pittsburgh zoo, the polar bears are a big hit with
visitors. They helped the zoo break an attendance record last year.
Curator Henry Kacprzyk hopes visitors tie their own behavior with the
plight of the arctic:


“It’s sometimes little things, as a general family, for instance, what you
can do is conservation of fuel and energy, keeping your lights off,
maybe living closer to work is a great idea. By choosing conservation
you can make a difference.”


The bears are popular with Cindy Jagielski, who’s visiting the zoo with
her small grandchild. Jagielski’s worried the bears will one day become
extinct but she admits she doesn’t know much about global warming:


“Maybe it’s just the Earth’s changing. I don’t know that industry has
anything to do with the melting of the ice there. Maybe it’s just a
natural occurrence.”


Despite some lingering doubts over what causes global warming,
polar bears are a popular cause. The Fish and Wildlife Service has
already received 40,000 emailed comments since it proposed protecting
the species. The Service will make its final decision on protecting
polar bears by next January.


For the Environment Report, this is Reid Frazier.

Related Links

Tossing Food Scraps to the Worms

Every day we have to deal with throwing away
garbage. For most, that means taking it to the curb.
But some people keep the food scraps for something
special. Richard Annal has the story of a
family that’s using a money-saving, all-natural way
to dispose of food waste:

Transcript

Every day we have to deal with throwing away
garbage. For most, that means taking it to the curb.
But some people keep the food scraps for something
special. Richard Annal has the story of a
family that’s using a money-saving, all-natural way
to dispose of food waste:


I’m driving through the rain to meet a woman who’s doing something I’ve
heard about for years but have never actually seen. And she’s doing it in her basement. She’s taking her
family’s food scraps and feeding them to worms downstairs. Brenda
Lotito’s home is white and brown, and sits on a little hill in a suburban
neighborhood. Brenda is expecting me and greets me at the door. Behind
her, there’s a little commotion. That’s her son John and the family dog,
Charlie.


I have a seat at the kitchen table. I find out it was John who first
took an interest in worms. He likes the red, slimy night crawlers:


“What sparked my interest in the worms is how they feel when you touch
them and how you can’t hold them very well because they keep slipping
out of your hands.”


With a little research at their local library, Brenda and John found
worms work as a natural garbage disposal. So for the past five years,
instead of putting the garbage out, they’ve been feeding the worms.
They turn the food scraps into compost.


We all head down to the basement, including Charlie, the dog. That’s
where Brenda keeps the family’s worm box.


The Lotitos have a typical basement. Washer, dryer, sports equipment…
and a box of worms. It’s wood. It’s about 2 feet wide by 4 feet long.
Brenda tells me they can be different sizes depending on what you need.
This one is more than large enough for Brenda, John, her husband, and
Charlie, the dog. Brenda says she can put just about all her food waste
into the box:


“I don’t put meat or anything like that in there but we put all our
vegetables. Ya know, I don’t have to cut anything up. I just simply
throw the corn cobs in there throw the husks in there. And they eat
it.”


I open the lid and peer in. The first thing I notice is what I don’t
notice. There’s no offensive odor. The only smell I do detect is that
of fresh earth. I move the contents of the box around. There’s some
shredded newspapers, some corn cobs in the process of becoming worm
food, coffee grounds, and other food waste.


After a little poking around, I find the worms: dozens of red,
well-fed looking worms. They’re fat.


Brenda tells me she has been making worm boxes for years and she thinks
others can benefit from her experience. She’s selling worm composting
kits for a small price. She says worm boxing is easy to get started,
takes a little investment, and the maintenance is low:


“Once you buy a batch of red worms, they’ll just keep on multiplying every
7 to 10 days, and um, you’ve got yourself a great composting bin.”


Brenda says worm box composting has a lot of benefits. In her town,
the trash pick-up service charges by volume. So, she saves money on her
garbage bill by putting most food waste into the box instead of the
trash can.


And she saves money on fertilizer. Brenda is a gardener. The compost
left by the worms is a great all-natural fertilizer. And in addition,
the worm’s, um, leavings work as a natural bug repellant as well:


“What it does is it makes the plant create an enzyme that is bitter to
aphids and other creatures.”


And Brenda thinks fewer chemicals and fossil fuel-based fertilizers
makes the food in her garden that much better:


“You know I can pick the tomato right off the plant. Ya know, wipe it
off, wash it off, And feel comfortable that I’m putting it in my mouth.
Everything has come from the earth. It’s a circle, it’s awesome.”


Brenda says to her, the biggest benefit of worm box composting comes
from letting people know there’s another way to dispose of food waste.
It’s all-natural. It means less garbage to pick up, less garbage to
fill up the landfill, and at the same time it saves money, provides a
superior fertilizer that’s all organic, and puts nutrients back into
the Earth… where they come from.


For the Environment Report, I’m Richard Annal.

Related Links

The Price of Global Warming

  • Some industries are working with government to voluntarily reduce greenhouse gas emissions. People who are worried about their personal CO2 emissions can buy carbon offsets, but there are dozens of programs, making it confusing. (Photo by Lester Graham)

There’s evidence that the Earth is changing
because of global warming. Glaciers are receding.
Polar ice caps are melting. Weather patterns are
altered. That’s prompted some people to look
for ways to reduce their personal contribution to
global warming. Rebecca Williams reports there
are many new companies that claim to help you do
that… for a price:

Transcript

There’s evidence that the Earth is changing
because of global warming. Glaciers are receding.
Polar ice caps are melting. Weather patterns are
altered. That’s prompted some people to look
for ways to reduce their personal contribution to
global warming. Rebecca Williams reports there
are many new companies that claim to help you do
that… for a price:


Whenever you drive, fly, or ride, you’re emitting carbon dioxide. And it’s not just the way you get around. It’s also any time you turn on lights or plug into an electrical outlet. More than half of the electricity in the U.S. comes from power plants that burn
coal and that’s another major source of carbon dioxide.


It’s a problem because carbon dioxide is a potent greenhouse gas.
The vast majority of scientists agree all this carbon dioxide
that people produce is trapping heat in the atmosphere and making
the planet warmer.


David Archer is a climate scientist at the University of Chicago:


“The problem with fossil fuels is that the cost of that climate
change isn’t paid by the person who makes the decision to use
fossil energy so it’s sort of like a bill we’re leaving to future
generations.”


Some people say there’s a way to pay that bill now. About three
dozen companies and nonprofits have sprung up in the past few
years. They’re selling carbon offsets.


The idea of a carbon offset is to balance out the carbon dioxide
that you emit. In theory, you can do this by investing in
something like tree planting or energy projects that don’t emit
greenhouse gasses, such as wind or solar power.


First, you can go to one of the group’s websites and calculate
your carbon footprint. That’s all the carbon dioxide you produce
by driving, flying, and so on, in a year. North Americans have
especially big footprints.


The companies assign a price per ton of carbon that’s emitted.
You can decide how much of your carbon-emitting you want to
balance out. Then you type in your credit card number and voila… no more guilt.


Well, that’s the idea anyway.


But what if you buy a carbon offset
but you don’t change your behavior? If you keep driving and
flying and using electricity just as much as before, or maybe
more than before, you’re still a part of the problem.


“You’re absolutely still emitting the carbon. The idea is that
you’re balancing it out through reductions elsewhere.”


Tom Arnold is a cofounder of Terrapass. It’s a carbon offset
company:


“Now this isn’t the optimal solution of course – you should stop
driving. But it’s a good way that we can get you involved in the
dialogue and help you reduce emissions somewhere else.”


And you can get a little sticker for your car to show you’re in
the offsetting club. But Tom Arnold admits there aren’t a whole
lot of drivers of huge SUVs buying offsets.


“We have this nice little SUV sticker – it’s pretty expensive and
a horrible seller. Most of our members already drive passenger
cars, very efficient cars. They’re just looking for a tool to
balance the rest of their impact out to zero.”


Erasing your carbon footprint sounds pretty positive, but there
are quite a few critics of the carbon offset industry. They
point out there aren’t any agreed-on standards for what an offset
is, and prices are all over the map. So it’s not always clear
what you’re getting for your money.


Mark Trexler is president of Trexler Climate and Energy Services.
He’s a consultant who reviews the groups selling carbon offsets.
He says you do have to ask questions about what you’re buying:


“Am I putting my money into something that wouldn’t have happened
anyway? Because if somebody would’ve built that windmill anyway
or if they would’ve done whatever it is you’re putting money into
anyway, you’re really not rendering yourself climate neutral.”


Trexler says there are certification programs in the works so
consumers can know more about what they’re buying. But the people
who are buying offsets now say it feels like they’re making a
difference.


Kate Madigan bought offsets. She started thinking about it when
she was awake at night worrying about the world her new baby
would live in:


“Some people say oh, global warming, it’s going to change the
world in 100 years, but I’ll be gone by then. But I think that’s
a horrible way to look at things because we’re leaving the world
to a lot of people that we love.”


Madigan says she doesn’t think carbon offsets alone will really
solve the problem. She says she thinks it’ll take a lot of
harder choices too, like driving less and using less electricity.


Supporters say that’s the real power of offsets. It’s getting
people to talk about the role they play in global warming.


For the Environment Report, I’m Rebecca Williams.

Related Links

Hydrogen Powers Family’s Car and Home

  • Mike Strizki demonstrates how a balloon filled with hydrogen can run a fuel cell and power an electric fan for about 45 minutes.

Many homeowners have reduced their fossil fuel consumption by placing solar panels on their rooftops. But one man has gone to a whole new level. He’s created a homemade power plant that runs on solar power and hydrogen fuel cells. Brad Linder reports:

Transcript

Many homeowners have reduced their fossil fuel consumption by placing solar panels on their rooftops. But one man has gone to a whole new level. He’s created a homemade power plant that runs on solar power and hydrogen fuel cells. Brad Linder reports:


Mike Strizki’s been tinkering with cars his whole life. Over time the 49-year old engineer became convinced that hydrogen fuel cell vehicles were the future of the auto industry. But during his 16 years with the New Jersey Department of Transportation, Strizki saw there was a problem with fuel cell cars: nobody was really building them.


“You had the auto makers and you had government pointing fingers. Well, you know, you build the fuel cell cars first and then we’ll provide the infrastructure. And they said, well you provide the infrastructure, and we’ll build the fuel cell cars. And I got tired of hearing that argument. And I said well, one way to solve the problem is to make your infrastructure your home.”


Five years and half a million dollars later, Strizki’s achieved his dream.


Here’s how it works. Strizki’s garage is covered with solar panels. They provide electricity for his house, and when there’s extra power, it’s routed to a device called an electrolizer, which breaks down water into hydrogen and oxygen.


During the summer, the hydrogen is stored in fuel tanks on Strizki’s property. And in the winter, he runs the hydrogen through a 6 kilowatt fuel cell to make energy. Strizki, his wife, and three children, are the first family in the country to live in a house powered entirely by hydrogen fuel cells and solar power.


And there’s another benefit: Strizki can fuel up his hydrogen fuel cell vehicles at a gas pump near his garage.


(Car accelerating sound on pavement)


“The fuel cells have enough to run the vehicle at about 50mph on fuel cells alone. If you’re going faster than that you’re sipping off the battery pack at a very low rate.”


Strizki helped design this car for Rutgers University 7 years ago. It’s been running ever since. Now that he has a fueling station at his home, he plans to convert his other car, a Toyota Prius, to run on hydrogen as well.


Strizki pulls up to the hydrogen fueling station – a series of converted propane tanks out by his garage. Opening his car’s trunk, Strizki connects a hose from those tanks to a smaller tank in the car.


“That’s how it refuels.”


Strizki’s system runs like a well oiled machine, only without the oil. But it wasn’t always so simple. When he first decided to build his home power plant, Strizki sought government approval from his home town of East Amwell New Jersey.


“I said all right, I’m doing this like anybody else who’s getting a building permit. I walked into the town and I said here, I want to build a solar hydrogen fuel cell home… and well, that… you know, the first place I went was the zoning officer, and he told me it’s an uncustomary use in a residential zone, and it’ll be a cold day in hell before I allow this.”


East Amwell Mayor Kurt Hoffman says the zoning officer was known as a stickler. The township had accidentally removed a line in a local zoning law allowing homeowners to use alternative energy.


“So we did an addendum to the zoning ordinance to allow alternative energy usages. These kinds of things, they have to be publicly noticed, you have to have public hearings. That brought out some people’s concern about hydrogen technology and the safety issue.


Hoffman says Strizki brought in a series of experts to testify that his house wasn’t going to blow up. The hydrogen was being stored at a safe pressure in the same type of tank normally used for propane.


Strizki says he’ll probably never make back the half-million dollars it costs to build his system. But he hopes to cut the costs by 90%, by mass producing and selling solar-hydrogen fuel cell systems to other homeowners. He says the future of the planet depends on renewable energy and not fossil fuels that have to be transported halfway across the world.


“At least the fact that I’m using the energy in the same place that I’ve created it, the energy is still zero carbon, and it’s still free, once you’ve paid for the equipment.


The Strizki’s don’t skimp on electricity. They have a big screen TV, a hot tub, and all modern appliances. And Strizki takes great pride in the fact that he can power everything, including his car, using renewable hydrogen power.


“There’s no shelf life, and that’s what powers the sun. When the sun stops shining, we’re all dead. So this is a much better solution than digging big holes in the ground, throwing sulfur up into the air. This is something that’s definitely sustainable. We just have to have the will to do it.”


For the Environment Report, I’m Brad Linder.

Related Links

Part 1: Carmakers Push for More Ethanol

  • Switchgrass is an easily grown biofuel crop, which can be used to make ethanol. (Photo courtesy of the National Renewable Energy Laboratory)

This summer, drivers got a crash course in the dangers of fossil fuel. Gas prices shot above three dollars a gallon, concerns about global warming surged, and instability continued to plague areas of the world where oil is produced. We’ll be taking a look at some of the technologies that could help the US kick its fossil fuel habit. We’re starting with an alternative fuel that’s been sprouting up in gas stations across the region. Dustin Dwyer has this look at the promise, and the limitations of ethanol:

Transcript

This summer, drivers got a crash course in the dangers of fossil fuel. Gas prices shot above $3 a gallon, concerns about global warming surged, and instability continued to plague areas of the world where oil is produced. We’ll be taking a look at some of the technologies that could help the US kick its fossil fuel habit. We’re starting with an alternative fuel that’s been sprouting up in gas stations across the region. Dustin Dwyer has this look at the promise, and the limitations of ethanol:


This summer, Misty Childs found a way to do something positive about the fossil fuel problem. She says that she and her husband realized their Chevy Silverado pickup could run on E-85, a blend of 85 percent corn-based ethanol and 15 percent gasoline.


E85 burns cleaner than gas alone, so it’s good for the environment. And the ethanol is made from corn grown in the US. As she tops off her tank at a gas station, Childs says that makes a difference.


“It means a lot that we’re doing something for our country here, and not having to rely on others.”


Detroit’s Big Three automakers have been making a big push for E-85 in the last year. E-85-capable vehicles get the automakers a credit on federal fuel economy standards. So, even if drivers put regular gas in the vehicles instead of E-85, Detroit still gets a credit for doing better. And this summer, as more buyers became aware of the problem with fossil fuels, E-85 was just about the only alternative Detroit had to offer.


But ethanol as it’s currently made has limits. Jason Hill is a researcher at the University of Minnesota. He recently published a study on the long term outlook for corn-based ethanol.


“What we found is if you convert every corn kernel we produce in this nation to ethanol, we would be able to offset only about 12 percent of our national gasoline usage. So that’s not that large.”


That’s every corn kernel, including what we currently use for food. Which brings up another problem with ethanol: if E85 jumps in popularity, will that mean less corn for animal feed and grocery stores?


Maybe. Corn originally became popular because it was already being grown around much of the country, with help from federal subsidies. And ethanol processors, such as Archer Daniels Midland, also got tax breaks for making corn-based fuel.


But there’s another option for ethanol. Inside a lab at Michigan State University, researchers are working on the next generation of the fuel. This is what’s called cellulosic ethanol. Instead of using grains like corn kernels, cellulosic ethanol is made from the starches in plant cell walls. It can be made from pretty much anything that stands up straight – wood, prairie grasses and corn stalks.


That offers the possibility to increase the ethanol output for every acre of land devoted to the crops, and those crops don’t require fossil fuel-based fertilizer. They also don’t require planting every year by gas or diesel burning tractors the way corn does.


Professor Bruce Dale heads research into cellulosic ethanol at MSU. He says the current problem with cellulosic ethanol is finding a cheap way to break down the stiff materials. His lab uses ammonia to do the trick.


“The idea is to make cheap sugar. And the plant cell walls potentially could give you the cheapest sugar on the planet, if we could figure out how to get at that sugar easily. That’s what our ammonia process does in combination with the enzymes.”


It turns out that, much like a teenager eating pop-rocks, cars and trucks get a whole lot of energy from fuels based on sugar. Dale says most woody plants have plenty of sugar, but it’s really hard to get that sugar out.


Dale says some cellulosic ethanol could be on the market in the next few years, and the fuel could eventually sell for about 60 cents a gallon.


Right now, ethanol is still hard to find at the pumps. And one study says, even with major investment over the next decade, cellulosic ethanol might only equal half of our current oil useage by 2050.


That’s still a lot. But to really eliminate the need for gas, many experts say it’ll take more than just one technology.


For the Environment Report, I’m Dustin Dwyer.

Related Links

Powering a Town With Pig Manure

With skyrocketing crude oil prices much of the nation’s attention has turned toward alternative fuels. While many people are focused on ethanol production, one small town is looking at turning waste from humans and hogs into electricity. In a few months, the town will break ground on a 10-million dollar processing plant. It hopes to become the first town in the nation to run completely off renewable resources. The GLRC’s LaToya Dennis reports:

Transcript

With skyrocketing crude oil prices much of the nation’s attention has turned toward
alternative fuels. While many people are focused on ethanol production, one small town
is looking at turning waste from humans and hogs into electricity. In a few months, the
town will break ground on a 10 million dollar processing plant. It hopes to become the
first town in the nation to run completely off renewable resources. The GLRC’s LaToya
Dennis reports:


To get where we’re going, you have to pass through small town after small town and
acres and acres of cornfields. Reynolds, Indiana is a farm town of about 500 people. It’s
hard to find on most maps. And it’s pretty easy to overlook. After all, there’s only one gas
station and three restaurants. But what Reynolds is doing is hard to overlook. Charlie
Van Voorst has lived there for a long time and is now the town president. He says the town is
going to provide its own electricity and it’s not going to burn fossil fuels like coal or
natural gas.


“Town board meetings went from talking about the neighbor’s dog in your yard to now
talking about million dollar decisions about what we’re building.”


What the town of Reynolds is building is a new power plant powered by the by-products
of the surrounding farms, chiefly, pig poop. The plant will use technology to pull
methane and other gases from animal and human waste. The gases will then power
engines and steam turbines. Coming out on the other end is electricity, and leftover solids,
which can be used for fertilizer.


(Sound of pigs)


Within just a few miles there are around 150 thousand pigs. That makes for a lot of
waste:


“Well, this is the bacon.”


Bill Schroeder is a local pig farmer. He’s standing in the middle of a thousand hogs.
They’re about knee high and weigh around 300 pounds each. They’re constantly eating
and pooping.


“It don’t smell to me, does it smell to you. When you walked in here, did you smell?”


Actually, it did smell, but Schroeder thinks it smells like money. He says he’s willing to
give the waste his pigs produce to the town to turn into electricity. After the waste is
processed, farmers will get a higher quality fertilizer back for their fields. But Schroeder
says some farmers still might hesitate because they’re not being paid for their pig waste.


“There should be return. Anytime you invest money, you expect a return. I mean if
you’ve got a CD in the bank you expect a return on that CD. It’s no different from
investment in machinery, hog buildings or anything else.”


Obviously, some of the financial incentives still have to be worked out, but Reynolds
town officials say there are good reasons besides money to take the town off the existing
power grid. Right now, Reynolds gets its energy from coal. That puts a lot of carbon into
the air. Methane processing produces less carbon dioxide than coal.


Jody Snodgrass is managing director for Rose Energy. That’s the company building the
processing plant. He says the project has another environmental benefit. It reduces the
amount methane from pig manure that’s released into the atmosphere because it’s
captured and used to make electricity.


“The increase of methane causes increased cloud formation. Also causes decreased ozone
layer and basically contributes to global warming as does carbon dioxide and several
other compounds. And if you can reduce those or eliminate those, that obviously is a plus
for the environment.”


That’s the reason the town of Reynolds is getting the support of the state in its effort to
become energy independent. Although everyone’s not on board yet, town president Charlie Van
Voorst is excited about what’s to come. He says small town farming communities haven’t
seen a development this big in more than 100 years:


“Oh, my goodness. Since I’ve grown up, golly. I suppose you could talk about the –
something to this magnitude would be when electricity came into our community.”


Town officials hope Reynolds is powered by pig poop and other alternative fuels by
2008. They say if things go well, their town could become the model for other small farm
towns across the country.


For the GLRC, I’m LaToya Dennis.


HOST TAG: This piece was originally produced for NPR’s Next Generation
Radio.

Related Links

Wetlands to Slow or Grow Global Warming?

  • John Pastor is trying to figure out how climate change will affect bogs and fens like this one. (Photo by Bob Kelleher)

In northern Minnesota, a researcher says wetlands like bogs could be key to how fast the climate changes worldwide. And the areas like the upper United States and Canada in the bull’s eye for rapidly changing temperatures and rainfall. The GLRC’s Bob Kelleher reports:

Transcript

In northern Minnesota, a researcher says wetlands like bogs could be key to how fast the
climate changes worldwide. And the areas like the upper United States and Canada in the
bull’s eye for rapidly changing temperatures and rainfall. The GLRC’s Bob Kelleher
has more:


What have wetlands, like fens and bogs, got to do with global warming? John Pastor says,
plenty.


Pastor is a professor and researcher with the Natural Resources Research Institute of the
University of Minnesota-Duluth. When Pastor straps on his hip waders, he goes where
almost no one else dares to go: into northern Minnesota’s fens, where water can be
several feet deep, and onto the bogs, where the mass of plant material is so thick it floats
on standing water.


A seven year-long study has revealed that fens and bogs can either help slow global
warming, or accelerate it. Pastor says all cards are off the table if temperatures keep
rising:


“The one problem in science that has the most ramifications throughout all of science – it’s
global warming.”


We’re in a swamp north of Duluth, Minnesota. Actually, it’s a fen, and it borders some
higher landscape nearby that’s a bog. What fens and bogs have in common is water and
peat, the not quite decomposed stuff left over when plants die. Pastor says peat lands are
one of the world’s significant bank accounts for carbon. They keep carbon out of the
atmosphere.


“Peat lands cover only 3% of the earth’s surface, but they contain 30% of all the carbon
that’s in all the soil in the world, locked in that partially decomposed organic matter, that
peat.”


Minnesota has vast peat lands that have been storing carbon for 10,000 years, but even
the size of Minnesota’s peat lands pales compared to those further north – around
Canada’s Hudson Bay, or in the Russian republics – all regions Pastor says that are facing
higher temperatures.


“All of the global climate models, one thing they all agree on, is that the greatest amount
of warming will occur in areas from Minnesota northward, and then inland – mid-
continent areas. So here we are. We’re sitting right now, right in the bullseye of the
greatest amount of warming that will happen on the face of the earth.”


This is the question: Will higher temperatures help trap more carbon in bogs, or force
more carbon into the atmosphere?


In this bog, Pastor’s been trying to figure out how warmer weather will affect bogs and
fens, and, in turn, what role the wetlands will play in global change. One thing he’s
found: the results depend largely on the water table, and that’s going to depend on
rainfall.


In some combinations, say with additional heat and additional rainfall, bogs could thrive,
trapping more carbon. That would be good. In other conditions, say with more heat but
less rainfall, bogs and fens could die and decompose, releasing even more carbon into the
atmosphere. That, Pastor says, would be bad:


“Now we have kind of a double whammy. Not only are we putting carbon dioxide from
fossil fuel into the atmosphere, the warning from that could cause the carbon from the
peat land also to go into the atmosphere and accelerate the warming.”


Predicting an outcome becomes mind numbing. Pastor’s working with new mathematical
theory to try to determine at what point global warming has gone too far.


“And so what seems to be happening is the temperatures of the earth have crossed some
kind of a threshold, where all the sudden, before that they crossed that threshold, the old
earth that we grew up with was stable. Now, it’s becoming very unstable, and ice sheets
are collapsing, birds and plants are migrating – everything’s happening very, very
quickly. And we’re going to enter into a new kind of earth that has a different kind of
stability – a different stable endpoint.”


Pastor says there’s no more complicated problem in all of science than global warming,
and no more important problem. Global warming, he says, changes everything, from the
forests to the wetlands. Pastor’s hoping the new mathematical models will provide more
definitive answers in time to do something about the outcome.


For the GLRC, I’m Bob Kelleher.

Related Links