Richard Stuebi/Advanced Energy
February 8, 2010

Gray power

As posted to CleanTechBlog.com

The distinction between “green power”  electricity without any carbon emissions, usually from renewable energy sources such as solar and wind  has been clearly drawn vs. “brown power”  electricity generated from fossil fuels.

In a recent article in The Nation, author Lisa Margonelli writes about “The Case for ‘Gray Power’“. “Gray power” is the term Ms. Margonelli uses for a concept called “energy recycling,” wherein electricity is generated from capturing waste heat from burning fossil fuels. So gray power is not as “green” as renewables, but given that the fuel is being burned anyway, generating more electricity from the same amount of fuel burn is surely a good thing.

Ms. Margonelli makes the point that there are huge untapped opportunities for capturing waste heat to generate electricity in the U.S., especially in the Midwest and South, with the plethora of coal-fired powerplants in those regions. This message has been pounded home loudly and frequently by such people as Thomas Casten of Recycled Energy Development.

So what’s preventing this opportunity from being captured?  Ms. Margonelli argues that there are two main impediments: First, various electric utility and state regulatory practices impair the economics of those who might pursue gray power opportunities. Second, the U.S. Clean Air Act is written in such a way to discourage major modifications of powerplants  even if they are modifications that improve economic and environmental performance.

Her proposed remedy is the creation of a federal Clean Power Authority, analogous to an organization like the Tennessee Valley Authority or Bonneville Power Administration, whose mission would be to recycle wasted energy from powerplants in the South and Midwest.

While I agree that the two issues she identified are in fact real impediments to recycled energy, Ms. Margonelli misses a third critical one.

In Europe, waste heat recapture is much more prevalent than in the U.S. Why? Because the waste heat often can’t be economically converted into electricity, but must remain as heat  and Europe’s infrastructure is much more optimally configured to economically use this heat.

Given that Europe is so compact and densely populated, pretty much every powerplant is within 20 to 30 miles of a sizable town, and many of these towns have central district heating systems that can make direct use of the waste heat piped in from the powerplant. In contrast, most major powerplants in the U.S. heartland are situated hundreds of miles away from any city center with a district heating system that can use waste heat. Lacking an economically proximate market for waste heat, it just goes up the stack  poof!

No question that opportunities to capture gray power in American urban centers are non-trivial, and they should be diligently pursued. But what’s needed to make gray power in the U.S. more of a widespread reality is not so much a federal Clean Power Authority, but technology that can economically convert low-grade (and low-value) waste heat into higher-value electricity. And that is exactly what firms like Akron-based ReXorce Thermionics are working to develop.

February 1, 2010

Getting the LEDs out

As posted to CleanTechBlog.com

Keith Scott, vice president of business development at Bridgelux, recently posted on GreenTech Media an interesting take on the state of LED lighting markets. Mr. Scott claims that “we are in the middle of the LED lighting revolution,” and sees big expansion ahead in for the sector.

In some ways, the picture he paints parallels the recent trends in the photovoltaics sector. The prices for LED lighting systems are high in large part because of booming demand for LEDs from other applications (e.g., high-def TVs). This is triggering expansion of LED manufacturing capacity, which should alleviate supply constraints and drive down prices.

Regulatory drivers  Energy Star, California’s Title 24, and other code tightenings  will spur demand to absorb the increased supply. Product designers are working to integrate LED into holistic systems that better satisfy customer needs on a variety of attributes  not just light quality, but also temperature.

Solar energy has consistently been one of the sexiest segments of the cleantech arena. If LED technology is following a somewhat similar trajectory, then shouldn’t it start garnering more attention?

January 25, 2010

Reach out and Green Touch someone

As posted to CleanTechBlog.com

A few weeks ago, the legendary Bell Labs, now the R&D engine behind Alcatel-Lucent, announced the launch of a new global initiative called Green Touch.

The goal of Green Touch is to “create the technologies needed to make communications networks 1,000 times more energy efficient than they are today.” To put that in perspective, the Green Touch rollout press release noted that a thousand-fold reduction in energy consumption would power the world’s communication networks for three years with the amount of energy now consumed in one day.

Given the likely continuance of exponential demand increases for bandwidth around the globe, the need to make communications technologies radically more energy efficient will be critical - or else.

The founding members of Green Touch are a who’s-who of high technology, including enormous telecoms like AT&T and China Mobile, academic research labs such as MIT’s Research Laboratory for Electronics and Stanford University’s Wireless Systems Labs, and industrial labs (not only Bell Labs but Samsung’s Advanced Institute of Technology).

Green Touch is seeking additional collaboration partners, so if you’re interested and can contribute materially, it should be a fascinating table at which to sit.

January 18, 2010

Best green tech innovations of 2009

As posted to CleanTechBlog.com

Last week, E/The Environmental Magazine announced its Best Green Tech Innovations of 2009.

It’s unclear what criteria were used to select the winners, but I was impressed by the fact that I had not previously heard of any of these products or technologies. Since they were all news to me, I don’t know enough about any of them to have a favorite.

I’m also struck by the observation that the list represents innovation involving large corporations like Ford and Sony, as well as tiny start-ups and individual inventors.

I used to pride myself on being pretty well-informed about the cleantech arena, but being unable to remain abreast of developments on so many fronts is a vivid illustration of how robust the cleantech space is becoming. I’ll gladly sacrifice the comprehensiveness of my awareness and understanding for increasing velocity from an exploding number of innovators  including industrial powerhouses  in the cleantech marketplace.

January 11, 2010

National Cut Your Energy Costs Day

As posted to CleanTechBlog.com

Did you know that yesterday, Jan. 10, was “National Cut Your Energy Costs Day?” Until a couple days ago, I didn’t. That is, until the folks at SunRun, a provider of residential solar energy systems, promoted the day by sending out the following blast email:

Five quick tips on how cut costs and save energy this new year:

1. Power Strips: Plug your TV, computer, and other home electronics into power strips and flip the switch when they’re not in use. Even when appliances are turned off, they’re still running on phantom energy. If you don’t use power strips, remember to unplug your appliances when you’re done with them.

2. CFLs: Switch out your incandescent light bulbs with compact fluorescent light bulbs. CFLs last up to 10 times longer than and use about one-fourth the energy of incandescents.

3. Solar Panels: Reduce your electricity costs by installing solar panels in your home. You use the same amount of energy but pay less for it, because you can lock in a rate with solar rather than be subject to your utility’s rate increases.

4. Sleep mode: Set your computers to sleep mode, rather than screen saver mode, when not in use. It takes about 100 watts/hour to run a screen saver on your graphics card. Cut energy costs by letting your screen go black.

5. Air sealing: Seal cracks and openings to prevent outside air from otherwise entering your house. Paired with proper insulation, air sealing can increase energy efficiency and drastically reduce your heating and cooling costs.”

Well, truth be told, #3 really isn’t an energy-saving tip, but I’ll cut SunRun some slack because at least they are honest in pointing out that anyone interested in solar energy should first implement all cost-effective energy efficiency possibilities. It’s crazy, but too often the case, for someone to install a solar energy system when the building itself is terribly inefficient. There’s no point in generating relatively expensive electricity and then wasting it  especially when the costs to avoid the waste are often so modest.

We’ll have made real progress in this country when every day is National Cut Your Energy Costs Day.

January 4, 2010

Dot’s nice

As posted to CleanTechBlog.com

One of the virtues touted for the so-called “smart grid” of the future is the ability to help customers manage their appliance usage better, and thereby reduce unnecessary energy consumption. However, since people are heavily influenced by economic considerations, fully capturing this opportunity presupposes that customers understand how much money (that is, energy) they could save by reducing consumption at any moment in time.

As profiled in the January/February 2010 issue of Technology Review, a company called Talon Communications has developed a neat little product called the “edot” to address this issue. 

The edot communicates wirelessly with a house’s “smart meter” to fetch updates on real-time power prices, thereby indicating when power prices are relatively high or low. At roughly $10 per unit, the magnetic edot can be stuck to many major appliances around the house, providing an on-the-spot indicator to the user whether or not it’s an especially good (i.e., lucrative) time to turn off or reduce power.

No, the edot will not save the world, but it is indicative of the many tiny but reinforcing elements necessary to bring the smart grid to full fruition  and to bring intelligence to energy decision-making at the household level.

December 28, 2009

EcoCAR’s top 10 green resolutions of 2010

As posted to CleanTechBlog.com

I’ve been crunched for time over the holiday season, so I’ve dropped the ball on writing original content. Sorry about that.

To fill the gap, I received the following email from Katy Rohlicek representing EcoCAR, which I’m posting verbatim:

“When it comes to making a fresh start at the beginning of the year, we usually listen to ‘experts’ – leaders, celebrities, doctors, coaches, therapists, etc. In 2010, we say, let’s listen to our youth. Better yet, how about a group of young engineers from 16 universities across North America who are part of a competition to design and build a greener car of the future? They’re part of the EcoCAR Challenge, which means they think about green automotive engineering 24/7. But that wasn’t quite enough. They wanted sustainability to touch all aspects of their lives. So EcoCAR students from Victoria, British Columbia, to Daytona Beach developed the following list of 10 green resolutions to help them, and others, live a more sustainable, eco-friendly life in 2010:

1. Drive smart. We appropriately begin with a no-brainer resolution for the EcoCAR teams. There are many small changes you can make to green your time behind the wheel. Planning trips to avoid traffic and stop lights; maintaining steady and legal speeds; slowly accelerating; limiting use of air conditioning, heated seats, and rear window defoggers; and avoiding unnecessary heavy loads can all improve fuel economy.

2. Set car-free goals. Whether it is biking to work or running errands on foot, it’s easier to stick to a greener transportation plan if you set goals. University of Wisconsin EcoCAR team member Dan Grice set an ambitious goal for 2010: 3,000 commuter miles by bike. He says, ‘Bike commuting is my goal. I want to average four days a week, which would eliminate 3,000 miles of driving in 2010.’ No bike? EcoCAR’s Mississippi State University team takes advantage of the free bicycle-share program. Look around or start one in your area.

3. Try sharing. Car pooling may have been an invention of necessity to dodge traffic, but it’s greener than ever even if it’s still not the most popular option – 77% of Americans drive to work alone. EcoCAR’s Texas Tech University team is doing its part and has started car pooling to their garage daily. Local car-sharing programs are taking off, too, and chances are we could all benefit from taking up one of these options. EcoCAR’s University of Waterloo and University of West Virginia teams both take part in new campus car-share programs, which rent hybrids by the hour.

4. Drop mileage from your food. Country of origin labels, wait lists for CSAs, and the overcrowded farmer’s market scene add up to one thing: Americans are paying more attention to where their food comes from. Beth Bezaire from Ohio State University’s EcoCAR team says, ‘Purchasing food that has to fly across the world has become less appealing.’ The teams suggest buying local as much as possible and setting a goal, like resolving to incorporate one local food product into your meals every day. Push your school or office to incorporate local foods into the menu, like they did at the University of Victoria in Canada (UVic) cafeteria, or eat out at restaurants that support regional farms.

5. Grow a garden. Seriously. Take a page from food author Michael Pollan and don’t be afraid to grow a garden, even if you only have a small space. You may discover it’s easier than you think. If land is at a premium, find a community garden. UVic’s Campus Community Garden rents 15-foot-long plots for $30 a year, and they currently have a waiting list! Get one started on your campus or sign up for a space in your local community garden.

6. Read or watch something new. The EcoCAR teams may know a lot about green engineering, but they are also challenging themselves to learn about other issues this year as well – whether it’s sustainable food, water footprint, or other environmental issues. Jeff Waldner from UVic says, ‘I find that knowing more about the problem makes me think more about the solution. The first time I picked up a book about global climate change, I was shocked at how much I didn’t know about the issue.’

7. Remember the little things. Switch your light bulbs, look for products made from recycled or lower-footprint materials, buy energy efficient electronics and appliances, go paperless, and conserve heat and water. The EcoCAR teams say it’s easier for young adults to start small, especially when time and money are often a factor. Also, these behavioral changes may seem minor, but they add up.

8. Don’t forget the trees. It’s easy to toss a plastic bottle or empty can into a recycling container, but it’s paper that typically gets the cold shoulder. The average American uses 650 pounds of paper per year and a lot goes to the landfill – paper products make up the largest percentage of waste at about 36%. Find simple ways, especially at work, to make sure paper gets tossed into the recycle bin. University of Wisconsin EcoCAR team member Brian Lee offers this tip: ‘Get an empty cardboard box, put it under your desk, and when it gets full, empty it in the actual paper recycling bin. This works for me because I don’t have to go out of my way and since the box is right at your feet, I always remember to recycle.’

9. Assess energy. Alternative energy sources are becoming more affordable and there is new funding available for smaller solar and wind installations. If you can’t consider renewable energy at home, look at the other areas of your life. For the EcoCAR teams, that means getting involved and encouraging their schools to go green. At UVic, solar panels heat the indoor swimming pool, parking ticket dispensers, and lights around campus. An added selling point is hiring local renewable energy companies to do the job.

10. Speak up. Don’t be afraid to say something to help change behavior. Dana Bubonovich, who is on Penn State University’s EcoCAR team says, ‘I remind people on campus to throw their bottles in a recycling bin. It may cause a little embarrassment, but they recycle it.’ If that’s not your style, share ideas and advice or get involved. Go to city meetings on sustainability topics and offer opinions, volunteer with local organizations, or keep tabs on your government’s greenhouse gas emissions reduction goals.

I look forward to your feedback and hope you’ll be interested in working together to spread the word. You can read more about the teams on their website (http://www.ecocarchallenge.org/) or blog (http://www.greengarageblog.org/).”

Well, I did my part. Best wishes for 2010 to everyone.

December 21, 2009

An evening with Ernest Moniz

As posted to CleanTechBlog.com

Last week, the MIT Club of Northeast Ohio hosted a talk at the Great Lakes Science Center in Cleveland by Professor Ernest Moniz, the director of the MIT Energy Initiative and a member of the President’s Council of Advisors on Science and Technology.

Over the course of about an hour of spirited commentary and responses to questions, Prof. Moniz made a number of interesting points. A few highlights:

Arguably the key challenge facing the energy sector is the virtual monopoly that petroleum has on the transportation sector. Producing more non-petroleum options/alternatives for transportation will be pivotal to a better future. By virtue of its considerable domestic resource and lower carbon intensity, natural gas is an attractive option - either as a transportation fuel directly (e.g., CNG) or in generating electricity to support electrified vehicles.

One must never lose sight that energy is a capital-intensive commodity industry subject to “complex politics,” which in turn means that the asset base changes very slowly and (unlike other economic sectors such as consumer products) is driven first and foremost by considerations of cost. Technologies exist today to address most of our challenges, but “inconveniently” they are considerably more expensive, which is not attractive to either customers or politicians.

Although more study at greater detail is always helpful, climate scientists have erred in framing public debates via increasingly sophisticated analysis. More than a century ago, predictions were made about carbon dioxide levels and planetary impact that are a good first-order approximation of what is being evidenced today. Rather than being required to prove that human-induced climate change is occurring, the burden of proof should be on others to show convincingly that human-induced climate change isn’t occurring - that second- and third-order effects (such as feedback loops and consideration of other variables) are somehow dominating the first-order linkages between carbon dioxide concentrations and average planetary temperatures.

The exact future impacts of climate change are unknown, but the distribution of probable planet-wide average outcomes is fairly well described. An increase of 2 degrees Celsius by 2050 - what many consider to be the point beyond which planetary impacts become much more problematic - is on the lower end of the range of possibilities even if global per capita carbon dioxide emissions are cut by 80 percent from today’s levels. If status quo is maintained, there’s virtually no statistical chance of containing temperature increases to 2 degrees Celsius by 2050.

From a technological standpoint, advancements in all forms of low-carbon electricity generation - nuclear, renewables, and coal with carbon sequestration - will need to be pursued intensively. In addition, because some amount of future climate change is virtually predetermined given our past history, adaptation strategies and technologies should get much more attention. Although premature to employ and scary because of the principle of unintended consequences, serious research should at least begin on planetary engineering approaches (e.g., deliberate emissions of sulfates) to offset the effects of an increased level of carbon dioxide concentrations in the atmosphere.

The recent climate negotiations at Copenhagen never had much of a chance of producing a meaningful agreement without U.S. congressional action. Hopefully, Congress will act to pass good legislation on climate change, because the prospect of the EPA regulating carbon dioxide and other greenhouse gases as pollutants under the Clean Air Act is “horrific.” In Prof. Moniz’s view, there is significant urgency for action and a good chance of a not-very-good outcome. But all we can do is the best we can do, so we have to move forward in a mood of determined optimism.

December 14, 2009

On Climate-Gate

As posted to Huffington Post

While thousands of climate change scientists, policy-makers, and thought-leaders gather in Copenhagen to consider what to do about the future of our planet, most climate change skeptics are stuck on dissecting a scandalous incident that occured in the virtual world last month.

This so-called “Climate-Gate” stems from the efforts of a hacker who accessed a number of files and emails at the Climatic Research Unit (CRU) at the University of East Anglia, one of the most respected institutions in the world conducting climate science analysis.

The information obtained from the CRU includes a variety of commentary by leading climate scientists that personally disparages high-profile climate skeptics, and it includes attempts to coordinate efforts to retaliate against them in various ways. I suppose the bitterness is a natural human reaction to criticism, which has become very personal and nasty in recent years, but it’s petty and reflects badly on the scientists. They should be above the fray and mentally/emotionally strong enough to withstand sometimes insulting challenges from others by virtue of the unquestioned quality of their work.

Of more consequence are the allegations that data were fudged to produce results that misleadingly suggest that the climate is worsening far more than it actually is. To the extent there is one, the “smoking gun” of Climate-Gate  which some skeptics are comparing to the publishing of the formerly secret Pentagon Papers as a watershed turning the tide against the Vietnam War  is the following passage in a confirmed email from Prof. Phil Jones, director of the CRU:

“I’ve just completed Mike’s Nature trick of adding in the real temps to each series for the last 20 years (i.e., from 1981 onwards) and from 1961 for Keith’s to hide the decline.”

Of course, the climate skeptic community has jumped on this trove of emails with glee. The conspiracy theorists smell blood. Sen. James Inhofe (R-OK), who has long dimissed the climate change issue as a hoax, called for hearings on the matter. A variety of anti-climate change blogs have wondered why mainstream media haven’t given sufficient (in their view) coverage to Climate-Gate.

Referring back to Prof. Jones’ damning email, I personally have no problem with the use of the word “trick.” I’ve used it, and heard it used many times in many contexts, to colloquially describe a series of analytical steps that are completely legitimate but novel and clever to compress what would be a lot of work requiring a lot of time to a little bit of work that can be done quickly and efficiently.

However, I am more troubled by Prof. Jones’ use of the highly dubious and damaging phrase “hide the decline,” and it’s not so easy to completely wash this away. It appears that certain temperature data in question were considered spurious and were dismissed by many as somehow in fundamental error, so another set of data were used as a proxy in their place  producing a result that showed a greater increase in planetary temperatures.

To be clear, I think there’s a lot of science and a lot of data that show  and still show compellingly  that something is happening to the climate that is likely to be human-induced. In other words, I don’t think that Climate-Gate brings down the entire edifice of climate science, a stance well articulated by a recent article in The Economist. But this particular episode involving Prof. Jones doesn’t smell right. And in fact, as of Dec. 1, Prof. Jones has stepped down as director of the CRU pending an investigation. Whether or not the analytic approach and data assumptions were/are valid, it sure gives an appearance that the results were jury-rigged to produce an answer more desirable to the authors.

And this is the point of John Tierney’s excellent article in the Dec. 1 New York Times: that the scientists were “oblivious to one of the greatest dangers in the climate-change debate: smug groupthink. These researchers…seem so focused on winning the public relations war that they exaggerate their certitude  and ultimately undermine their own cause.”

It is inaccurate to claim, as some have, that climate science is “settled.” I have long said that climate science is far from certain, and that there are lots of unknowns that merit further study to gain better understanding. I have also said that there probably is enough known about climate change that we should do something about it because we’ll never have perfect information, just as we never have perfect information about important issues requiring tough choices that we must nevertheless decide upon, such as battle plans (or even going to war in the first place) or rescuing the financial system.

Unfortunately, both sides of the climate debate  passionate scientists and policy advocates vs. heated skeptics and supporters of the status quo at any cost  have moved beyond rational debate into the mystical. Indeed, as reported by The Telegraph in the U.K., a British judge has recently ruled that “a belief in man-made climate change … is capable, if genuinely held, of being a philosophical belief for the purpose of the 2003 Religion and Belief Regulations.” In other words, belief in climate change can be considered a religion.

Is this what we’ve come to: holy wars about the climate?

Let’s bring things back to some basic precepts about which no rational person can argue. First, carbon dioxide is a potent greenhouse gas. Second, the human race is pumping roughly 25 billion tons per year of that stuff into our atmosphere  25 billion tons per year that wouldn’t otherwise be in our atmosphere. Third, the Earth is the only known planet we can plausibly inhabit.

The truth is we really don’t know how the carbon dioxide we artificially introduce into the atmosphere will manifest itself in climatic impact. But it doesn’t take a rocket scientist to conduct this thought experiment and conclude that such emissions could have an important impact, and might even have a serious and damaging impact, on the long-term well-being of our planet.

Do we really want to keep conducting a global experiment with the only place in the universe where we can live for the foreseeable future? Especially if we can mitigate the experiment at modest economic costs? (By modest, I mean modest relative to the size of expenditures on discretionary human phenomena such as wars and bailouts.)

I take encouragement from hearing a voice of sanity emerge from an unlikely source, cutting through the din of the irrational diatribes in the wake of Climate-Gate. Last week, James Murdoch, the chairman and CEO of Europe and Asia for News Corporation - the parent company of Fox News and The Wall Street Journal, two outlets not generally sympathetic to the climate change issue - wrote a very thoughtful editorial that was published in The Washington Post. His punchline:

“You do not need to believe that all climate science is settled or every prediction or model is perfect to understand the benefits of limiting pollution and transforming our energy policies, as a gradually declining cap on carbon pollution would do. This is the moment to champion policies that yield new industries, healthy competition, cleaner air and water, freedom from petroleum politics, and reduced costs for businesses.”

With a simple statement like this, maybe Murdoch can achieve what the climate scientists at CRU and elsewhere have been unable to accomplish with attempts at sophisticated analysis. Given Murdoch’s credentials, perhaps some segments of the climate skeptic community can begin to see more clearly the need to adopt energy policies that can improve our economy and our environment, even while acknowledging the limitations of our understanding of climate science.

Let’s not waste time investigating the crimes of the robbers behind Climate-Gate, as Richard Graves has suggested on The Huffington Post. Let’s move on past Climate-Gate and take action toward building a better future for ourselves.

December 7, 2009

Cracking the codes

As posted to CleanTechBlog.com

One of the big line-items in the energy-related provisions of the American Recovery and Reinvestment Act was energy efficiency. More than $3 billion was allocated to efficiency investments, with the expectation of a 7:1 economic return based on results of the Department of Energy’s (DOE) State Energy Program since its inception in the late 1970’s.

Alas, it’s becoming evident to some observers (see article) that results will not be so good this time around. Part of this is almost certainly due to declining marginal returns: The $3.1 billion in ARRA efficiency investments is fully 70 times the normal annual investment by DOE in efficiency. Thus, it should be no surprise that returns will be diluted with such a huge one-time spike in funding.

But one of the big  and highly unfortunate  impediments to good returns on these ARRA energy efficiency investments is the obsolescence of building codes around the country. As building professionals know so well, building codes tend to be difficult to change, often because of resistance from builders and trades who prefer to maintain the status quo because…well, just because they’re more comfortable with and accustomed to the status quo.

While retrofit opportunities represent a large portion of the potential energy and emissions savings afforded by increased efficiency and many of these, as analysis by McKinsey suggests, can be done at negative societal costs  it will be important to surmount this inertia and opposition to establish new and more stringent baselines for our new building stock if we’re going to tackle our energy and environmental challenges in a permanent fashion.