Part 2: Tidal Power in the Atlantic

  • A team from Verdant Energy attempts to install a turbine. (Photo courtesy of Verdant Energy)

An emerging industry has begun to harness the motion of waves, tides, and currents.
On the East Coast, several companies are already testing various technologies to
capture this new form of renewable energy, often called tidal power. While tidal
power is still in its infancy, companies studying it say it could
eventually be more profitable and more environmentally-friendly
than other forms of renewable energy. Amy Quinton reports:

Transcript

An emerging industry has begun to harness the motion of waves, tides, and currents.
On the East Coast, several companies are already testing various technologies to
capture this new form of renewable energy, often called tidal power. While tidal
power is still in its infancy, companies studying it say it could
eventually be more profitable and more environmentally-friendly
than other forms of renewable energy. Amy Quinton reports:


(Pare:) “Coming in it hits this shore pretty heavy, going out it hits the
Newington shore pretty heavy, it is a dramatic roar. It really is.”


Jack Pare, a retired aerospace systems engineer, points to the water
under the Little Bay Bridge in Dover, New Hampshire. Here, tides
from the Great Bay move quickly through a narrow opening to the
Piscataqua River – at almost nine feet per second at its maximum.


Pare sits on a state commission that will study tidal power generation
here under the bridge:


“It’s just one of many things you have to do if you want to – quote – ‘save the
planet’ or otherwise cut down on our carbon emissions.”


Renewable energy experts say energy from tides, currents and
waves could double the hydropower output in the U.S., producing
20% of the nation’s electricity. Right now, only one company
is producing tidal power so far in the United States.


A little known start-up called Verdant Power has six underwater
turbines, resembling windmills, in the East River in New York. Founder
Trey Taylor says those turbines can generate power 18 hours a day:


“That power is then put directly into a supermarket and a parking
garage. Oh and by the way, in that parking garage in New York City there are
electric vehicles that plug into tidal power, which we think is pretty
cool.”


Taylor foresees a time when 300 of these underwater turbines will
power about 8,000 homes in New York. Verdant Power has also
spent more than two million dollars putting high-tech equipment in
the water to test how fish would react to the slow moving turbines:


“All we’re seeing so far, and this is all recorded, is what we were told by fish biologists who we went to who did some modeling, is that fish would swim through them because they’re moving so slowly or that fish will swim around them. And what we’re seeing is, fish are swimming around them because there’s a lot of separation between the turbines.”


But Jack Pare points out the turbine technology that works well in
New York’s East River might not be appropriate for the Piscataqua:


“We have deep water shipping, we have harbor seals, we have stripers
and we have lobster, none of which are present on that other site. And so there’s
a little bit more to be careful of.”


But another company studying tidal power on the East Coast has
come up with a type of technology that may alleviate that problem.
Oceana Energy, which holds permits along the Piscataqua River, has
technology that looks like a large wheel, with an open center.
Project Manager Charles Cooper says that allows marine mammals
to swim through:


“The open center approach we think is both more environmentally
friendly and likely less costly and also likely to be able to be scaled to
different sizes and generate a lot for the amount of
hardware that has to be put together.”


But Cooper says each site is different, and Oceana remains open to
using other companies’ technology. He says tides in the Piscataqua
could theoretically produce about 100 megawatts of power,
enough for about 100,000 homes:


“That’s a substantial amount of power but I think that’s not really the main
emphasis of this type of development, this is going to be something that can be looked at as supplemental to the real base load energy generation.”


Cooper says while east coast tides have less strength than those on
the west coast, they come with more regularity and typically
surround heavily populated areas.


Verdant Power officials believe the renewable energy will eventually
be profitable – an early analysis shows tidal power costing Verdant
seven to eight cents per kilowatt hour.


Those energy costs are slightly higher than natural gas and fuel oil.
And so far, Verdant has produced that without government
subsidies.


For the Environment Report, I’m Amy Quinton.

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Tree Planting Branches Across Country

This Thursday (November 21st), trees will be planted in every state capitol in all 50 states. The non-profit group, the National Tree Trust, is organizing the coordinated planting. The Great Lakes Radio Consortium’s Tamar Charney reports:

Transcript

This Thursday (November 21st), trees will be planted in every
state capitol in all 50 states. The non-profit group, the National Tree
Trust, is organizing the coordinated planting. The Great Lakes Radio
Consortium’s Tamar Charney reports:


The National Tree Trust is celebrating the fact that they’ve planted 10
million trees since the organization was founded in 1990. That works out to
be almost two trees per minute. The tree trust helps local communities
plant trees and educates people about the benefits of trees.


Paul Rosenthal is with the National Tree Trust. He says this coast to coast
tree planting event will draw attention to the importance of trees in our
communities.


“It’s the trees that are planted in the urban areas and suburban areas of the
United States… are the ones which really go very far in helping to clean the
air where we live, clean the soil where we live, provide cooling shade where
we live, to help bring down energy costs in the summer and winter time.”


He says according to their calculations, one urban tree provides over
57-thousand dollars worth of benefits over its 50-year life span.


For the Great Lakes Radio Consortium, I’m Tamar Charney.

Campus Power Plants Struggle to Keep Up

For universities across the Midwest energy costs are becoming a huge expense. Schools are increasingly reliant on technology and many are adding new research facilities. With that growth has come an increased demand for electricity, and at a number of schools around the region, aging power plants can’t keep up with that demand. The Great Lakes Radio Consortium’s Erin Toner reports on this growing problem:

Transcript

For universities across the Midwest, energy costs are becoming a huge expense. Schools are increasingly reliant on technology and many are adding new research facilities. With that growth, has come an increased demand for electricity. And at a number of schools around the region, aging power plants can’t keep up with that demand. The Great Lakes Radio Consortium’s Erin Toner reports on this growing problem:

Jeff Bazzi is a freshman at Michigan State University. He shares a dorm room on campus with three other students. They use a lot of electricity.

(Natural sound up/under — computer, fan, radio, TV)

In this one dorm room, there are four computers, two stereos, two televisions, three refrigerators, three fans, one microwave and four alarm clocks. Jeff Bazzi says even though he doesn’t get an electricity bill from the university every month, he’s aware of the amount of energy he uses.

“I know if I was at home my mom would yell at me for wasting electricity, running her bill up. So I still try to conserve. I don’t leave lights on around me and leave the TV on and all that, I try to conserve.”

And
that’s exactly what the university wants Bazzi and other students, faculty and staff to do…conserve. Last year, Michigan State launched an energy conservation campaign to promote ways to reduce electricity consumption. University officials say small changes on everyone’s part, such as turning off lights and computers, can collectively result in lower energy costs. Terry Link is the director of MSU’s Office of Campus Sustainability. He says just a five-percent reduction in electricity demand could save the university one million dollars a year.

“What we need to do is create that environment so that people become more aware that what they’re doing has an effect, it has a cost. It’s not immediate to their wallet, but it has other kinds of costs. And then to give them tools, examples, of how, if they feel they should do something to reduce that, what they can do.”

University officials say energy conservation is especially important now, as MSU struggles with a much tighter budget this year. Also, saving energy could delay a much larger problem. In the not-too-distant future, Michigan State’s power will no longer be able to provide enough electricity for campus. Bob Ellerhorst is the power plant director.

“Our universities are really becoming research-oriented, supported by a lot of high technology stuff. All of it takes electricity, a lot of it requires supplemental air conditioning.”

(Power plant sound up/under)

Michigan State’s power plant can make 55 megawatts of electricity, and during the hottest days of the summer, the campus uses all 55 megawatts. Over the next 15 years, MSU officials project the school will need at least 20 more megawatts of power. Schools throughout the Midwest are facing similar situations, as the demand for power on campus becomes too great for their aging power plants. Many are expanding their plants to meet demand. The University of Illinois is spending 60-million dollars on two new gas-fired turbines, Minnesota’s expansion will cost a-hundred-million dollars and the University of Wisconsin is building a brand-new power plant at a cost of 200-million dollars. Some schools, including Michigan State, are also considering buying more power from their local utility companies. But MSU power plant director Bob Ellerhorst says that electricity is almost twice as expensive as power produced on campus and isn’t nearly as reliable.

“Campus didn’t have a single outage, we had a lot of equipment failures in the plant that we just deal with. The campus has not had an interruption to service in over 36 months. I think that’s a lot longer than you’ve had to reset your clock at home.”

Michigan State is also looking into whether alternative sources of energy, such as wind and fuel cells, could play a part in a long-term solution. But in the meantime, they’re hoping students and faculty will begin conserving energy to help reduce demand and cost.

(Sounds of dorm up/under)

But that could be a challenge, from the looks of things at dorms and buildings on college campuses throughout the Midwest…where more electricity is being used than ever before.

For the Great Lakes Radio Consortium, I’m Erin Toner.

Lessons From Green Building Design

Principles of sustainable design, or “green building” have been around for years. These are designs that, among other things, reduce energy use and create more comfortable working environments. Yet they are often dismissed as costly, impractical, and experimental. But green design has come a long way in recent years. The construction cost of an environmentally-friendly office building today is comparable with the cost of more traditional methods, and the maintenance costs are often much lower. Architects and builders across Pennsylvania have learned that, and the result has been a major shift in how buildings are constructed. And the lessons learned there could eventually make their way across the entire Great Lakes region. The Great Lakes Radio Consortium’s Brad Linder reports:

Transcript

Principles of sustainable design, or “green building” have been around for years. These are designs that, among other things, reduce energy use and create more comfortable working environments. Yet they are often dismissed as costly, impractical, and experimental. But green design has come a long way in recent years. The construction cost of an environmentally friendly office building today is comparable with the cost of more traditional methods, and the maintenance costs are often much lower. Architects and builders across Pennsylvania have learned that, and the result has been a major shift in how buildings are constructed. And the lessons learned there could eventually make their way across the entire Great Lakes region. The Great Lakes Radio Consortium’s Brad Linder reports:

The Heinz National Wildlife Refuge at Tinicum Marsh lies just around the corner from the Philadelphia International Airport. The refuge is also home to the Cusano Environmental Education Center, celebrating its first anniversary as what many consider to be the city’s greenest building.

The Center’s heating and cooling relies on a geothermal system. About five hundred feet below the Cusano Center, the temperature remains near 50 degrees all year round. Deep wells reach into the ground to borrow heat in the winter, and cool air in the summer.

(Natural sound marsh machine)

The Center also makes use of a “marsh machine,” to clean and recycle wastewater. Refuge Manager Dick Nugent says the machine uses natural processes to filter water through a “constructed wetland” of PVC pipes, gravel, and marsh plants. Nugent says the city water department delivers drinking water, but the marsh machine has a more important use.

“We wanted this here as an environmental education tool. It isn’t as if we needed it for the functionality of this building. The message to take home is that marshes serve a very important function.”

Cyrus Baym is a volunteer coordinator at the Cusano Center. He says people come expecting to learn about nature, but wind up getting something special out of the building.

“The people that are coming in, they see this fabulous building, a lot of space, a lot of glass, and then when you start explaining along with the exhibits the sustainable design features, the use of recycled materials, passive solar windows their eyes get even bigger. They get more excited and want to implement it in their own house.”

Refuge Manager Dick Nugent says there was some additional cost to innovations like the geothermal system and the southern wall of the building, which is made mostly of glass windows. But in the long run, many of those additions will wind up saving money on electricity and heating. And the overall goal isn’t to be frugal, but to teach.

On the other side of the state, another approach toward sustainable design is taking hold.

Pittsburgh is currently home to one-quarter of the nation’s buildings that have been certified as green by the U.S. Green Building Council. The non-profit national industry group represents design, construction, and environmental interests. The council also administers the Leadership in Energy and Environmental Design, or LEED, rating system, which judges the overall environmental performance of buildings.

Unlike the Cusano Center in Philadelphia, many of Pittsburgh’s green buildings weren’t designed to be educational tools. The PNC Firstside Center in Downtown Pittsburgh provides workspace for 1800 employees in the bank’s technology and processing divisions.

Elmer Burger was one of the principle architects for the building. He says designing the largest LEED certified building in the country made sense for the project. The large floor space improved communication within business departments, and also allowed for extensive use of natural light.

“With a large floor plate, we had an opportunity to make the ceilings higher and bring daylight further into the building. So you can be as far as 125 feet away from the outside wall and still have daylight in a view.”

Burger says the building’s large windows give employees a view of the Monongahela River, and also save money by reducing the need for artificial light.

Rebecca Flora is director of Pittsburgh’s Green Building Alliance, a non-profit group working to encourage and facilitate environmentally friendly design in the city. She says some non-profit groups are interested in green buildings for ideological reasons, but also wind up getting long-term economic benefits.

“The life cycle value of doing a green building is actually quite significant in some cases. I know with Conservation Consultants, their building actually uses 60% less energy than a traditional building, which can have huge implications in terms of the small operating budgets that many non-profits have to work with.”

Flora says saving money is one of the main factors in getting major institutions like PNC to build green

“The myth that is out there is that green buildings cost more, and that’s one that we’re constantly trying to educate people around in that you get what you pay for. We’re trying to educate people around the fact that green building also adds value, and how do we equate that value with increased bottom line is a real key issue for most people.”

Flora says it’s important to convince clients, and not just architects of the benefits of green design. She says if the demand for LEED certified buildings increases, sustainable design techniques will become more common.

A number of other commercial and non-profit institutions in the city have also chosen green design. Both the Alcoa Corporate Center, and the Greater Pittsburgh Community Food Bank are green buildings. And the new David L. Lawrence Convention Center is the first convention center in the country to earn LEED certification

With so many high profile green projects, sustainable design is starting to look like common sense to many architects and their clients. Elmer Burger says the success of the PNC Firstside Center has led the company to adopt a new policy. All of their new corporate buildings will be designed to meet LEED requirements.

For the Great Lakes Radio Consortium, I’m Brad Linder.

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