Interview: Google’s Green Energy Czar

  • Bill Weihl is currently working on clean energy at Google. Before joining Google in early 2006, he was CTO at Akamai Technologies. (Photo courtesy of Google)

Chances are that you’ve visited the
website google.com. Google is
not only a leader in online tech, but
it’s also investing in high-tech
alternative energy, especially different
kinds of solar power. Lester Graham
talked with Google’s Green Energy
Czar – yes, that’s his real title – Bill
Weihl. His job is not only
to make Google more energy efficient,
but to investigate and invest in new,
cleaner energy use and generation:

Transcript

Chances are that you’ve visited the
website google.com. Google is
not only a leader in online tech, but
it’s also investing in high-tech
alternative energy, especially different
kinds of solar power. Lester Graham
talked with Google’s Green Energy
Czar – yes, that’s his real title – Bill
Weihl. His job is not only
to make Google more energy efficient,
but to investigate and invest in new,
cleaner energy use and generation:

Lester Graham: Last year, a report indicated performing two Google searches from a desktop computer could generate about the same amount of carbon dioxide as boiling a kettle for a cup of tea. How true is that?

Bill Weihl: We think, as, in fact, does the scientist who was behind most of the data there, that that report was actually off – that you, in fact, could do several hundred Google searches, if not more, for the emissions that are involved in boiling enough water to make a cup of tea.

Graham: What is Google doing to reduce energy consumption, or, at least, reduce greenhouse gas emissions?

Weihl: We have cut our energy consumption in our data centers – data centers are the, you know, big facilities that contain lots and lots of servers. We have cut the energy usage in those facilities by over 50%.

Graham: Is there anything we can do so that when we do use Google we’re being as energy efficient as possible?

Weihl: If you’re buying a new computer, look for one that’s energy efficient. And in the US that means look for one, at a minimum, that’s Energy Star compliant. Laptops also tend to be more energy efficient than desktops, in part because just to make the battery last long enough to be useful, they have to work really hard in designing them to make them energy efficient. The second thing you can do is when you’re not using your system, when it’s sitting there idle, you can set it so that it will go to sleep automatically, or manually, if for some reason it doesn’t go to sleep automatically, you can very easily tell it to go to sleep. That’s much more convenient, obviously, that shutting it down, having to reboot, and restart everything. And it uses about the same energy in stand-by mode as it does when it’s off – which is, in the order of 1 to 5 watts, far less than it uses when it’s just sitting there idle with the screen on and doing nothing.

Graham: Let’s look beyond the world of computers. Google has invested in research for energy efficiency in cars and electric generation. You have a program that’s called ‘R.E. is less than C’ or ‘renewable energy for less than the cost of coal.’ That’s ambitious. Is it realistic?

Weihl: First of all, it’s hugely ambitious. Secondly, I believe it is realistic. And third, I think it’s absolutely necessary. Today, coal is, by far, the cheapest form of energy, or electrical energy, that we consume, except perhaps for hydroelectric power, which is comparable in cost. But at least in this country, and most of the developed world, we’re not going to be building large amounts of new hydroelectric generating capacity. We’ve already dammed most of the rivers that are worth damming. We are, however, still building new coal plants. And coal is not only very cheap, but also it is, by far, the dirtiest, in terms of greenhouse gas emissions, of any of the sources of energy that we use. So I think it is necessary, in terms of dealing with the climate crisis that we are facing, to find a way to, over time, replace coal with cleaner sources of energy. And the only way, as a society, I think that we’re going to do that is if it makes economic sense. So that’s why we really started to focus on this initiative we call ‘R.E. less than C’ – to really try to drive innovation as rapidly as possible on the technology for generating renewable power to try to drive its cost down very quickly.

Graham: Bill Weihl is the Green Energy Czar for Google. Thanks very much for your time, I appreciate it.

Weihl: My pleasure. Thank you.

Related Links

Saving Energy in Online Activities

  • Servers at Expedient data center in Garfield Heights, near Cleveland, Ohio (Photo by Julie Grant)

One industry that’s not suffering in the economic downturn is information technology. The demand for IT keeps growing. But that worries some people. Our growing number of internet searches and data storage is using a lot of energy. Julie Grant reports on how some companies are making their IT more environmentally friendly – and saving money in the process:

Transcript

One industry that’s not suffering in the economic downturn is information technology. The demand for IT keeps growing. But that worries some people. Our growing number of internet searches and data storage is using a lot of energy. Julie Grant reports on how some companies are making their IT more environmentally friendly – and saving money in the process:

(sound of an internet search with a tea kettle)

By some estimates, two Google searches create the same amount of carbon dioxide as boiling water for a cup of tea.

Most people don’t think about the greenhouse gas emissions caused by their internet use. But there are about 200-million
searches globally each day – and each search kicks a lot of servers into gear. It adds up.

Albert Esser is an IT expert with Dell Computers. He says
in just a few years internet use could use 3% of the nation’s energy supply. That’s a lot of carbon pollution.

“From a global greenhouse perspective, that’s about the same as the airline industry will cost.”

But Esser says computers don’t need to use that much energy. Most computer systems are so
in-efficient today – that they’re wasting more than 90% of the energy they use.

(sound of a data center)

This is a data center. It’s filled with racks and racks of servers.

A hundred different companies rent space here. Each company has its own set of servers – to coordinate its email systems, word processing, online credit card transactions – all kinds of programs its employees and customers use.

But data centers can be real energy hogs. They need electricity to run all those servers. That creates a lot of heat, so they also need air conditioning. One data center can use as much electricity as a good-sized town.

(sound of electricity in the data center)

“You can hear the electricity, in here. The piles of batteries you see are attached to the uninterruptable power supply.”

Bryan Smith is marketing director for Expedient, which runs this and other data centers around the country. His customers want their computers to be fast, and that takes a lot of power.

But Smith says the data center does everything it can to cut down on energy usage.

“It’s obviously in our best interest to be energy efficient, because we’re the ones paying the power bill.”

So, they’ve set up the server racks to make them easier to cool. They’re also building a system to pull in cool air from the outside, instead of using so much air conditioning.

Some companies that use the data center are also starting to use software to create what are called virtual servers.

“This rack here is a virtualization rack, so you’ve for one rack here that has 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 computers in it. Right? So each one of these servers is equal to 16 physical servers.”

And so for each of those ‘virtual servers’ they can turn off
15 actual servers.

But, even with all that saved space and energy, Expedient’s data centers are growing faster than they ever anticipated.

This one built in Cleveland only two years ago is just about sold out of space – so Expedient is building another data center next door.

Albert Esser at Dell says the most environmentally friendly way to build data center is not to build one at all.

He says making better use of old centers, with virtual computers and other energy efficiency measures, produces a lot less pollution. And it saves money.

“I think the economic downturn, as harsh as it sounds, is the best thing which could ever happen to green IT. Because the economic pressures will make people think much harder to just build a new data center without changing the way they operate it.”

So IT is learning what a lot of companies are learning – that going green can mean saving energy – and that’s better for the bottom line.

For The Environment Report, I’m Julie Grant.

Related Links