Hydropower from Old Washing Machines

March 12th, 2009

OK. It’s New Zealand, not Australia. But this company called EcoInnovation still reminds you a little bit of Road Warrior. Founder and chief engineer Michael Lawley has built his “renewable energy store” on the ingenious redeployment of everyday household appliances.

Among other things, the company recycles SmartDrive motors from salvaged washing machines to generate hydropower. Of course, you need to be near a river or stream.

Yes, micro-hydro turbines that can tap into the movement of medium flowing streams and turn a turbine that can deliver most of the electrical requirements of a small home.

Lawley says the company has been able to recycle the motors from salvaged domestic washing machines - aka Whirlpool. The company claims its already made 1,000 successful installations of its micro-hydro device as well as wind and solar power systems.

EcoInnovation also prides itself on using recycled materials and renewable energy to manufacture renewable energy products.

But if you are, Lawley promises great results. He says his own home and company have been “power-bill free” for 11 years. It’s about time to put Kiwi innovation to work for U.S. homes bordering streams and rivers.

Micro hydropower systems have also gained greater attention recently in other parts of the world like Canada, India and Norway. Researchers at Dalhousie University in  Halifax, Nova Scotia, Canada. published a paper in the journal  Energy Sources last year. The paper pointed out that 85 percent of Nepalese people live in remote areas with limited access to energy sources, such as wood and other biomass products. The researchers found that micro hydropower has great applicability as a sustainable energy technology, especially in consideration of the socioeconomic conditions of the country.  

In fact, the paper outlined the benefits of micro hydro operations in remote areas offering one of the most feasible options for energy development. It is demonstrated that micro-hydropower can bring energy services to the rural areas of the country as well as social changes through decentralization and community participation. The researchers reported in their finding that micro-hydro projects fulfil the technological, environmental, economic, and social sustainability criteria.

And just last week, Norway’s minister of Petroleum and Energy Terje Riis-Johansen commented on micro hydropower stations as offering a way to boost the country’s electrical capacity to 18 TWh of new power. He said the country hopes that 100 applications can be processed each year. Last year, 42 power stations with a total production of 0.5 TWh received concessions. Lee Bruno

 



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Smart Grid on Your Radio

March 6th, 2009

The electric grid has been on the sideline as digital innovation has made many other systems smarter and more agile. Yes, the grid is one complicated mesh of interconnects but it’s about time it got some attention.

The Obama stimulus package promises to do that. Of the $104 billion going to green tech, there’s roughly $4.5 billion allotted to help the grid get smart. How it’s going to happen is still uncertain but at least the grid is now in the game.

One startup making a run at the smart grid is e-Radio. The company, based in Los Altos, is an angel-backed venture that has developed what it claims is a low-cost and highly reliable smart-grid communication system.

Its system employs the FM RDS radio standard widely used in the automobile industry to allow suppliers to pass along pricing and grid status to customers. It’s intended to work with the new class of smart-grid devices like communicating thermostats and air-conditioning load-control switches.

As for the competition, it’s fierce and heating up with Cannon Technologies, Gridpoint and Comverge offering hardware and software systems. But E-Radio maintains its system costs less and offers better signal and reception features.

E-Radio operates a network of FCC-licensed FM radio stations using subcarrier broadcasting signals to provide one-way delivery of data content to smart-grid devices containing an e-Radio receiver.
Research by UC Berkeley determined FM RDS to be a reliable, low-cost and ubiquitous communication system for demand response and better than competing technologies. It would complement the LAN smart-grid technology Zigbee, which is currently used in utility sensors for home and business.

The California Energy Commission is pursuing adoption of an FM RDS receiver module in smart-grid devices on a statewide basis for demand response beginning in 2009. The e-Radio product is going to be available first quarter 2009 and the company is currently seeking a $3 million A round. We’ll see if e-Radio can bring some smarts to our senile electric grid. –Lee Bruno

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Biofuel Myths and Realities

February 25th, 2009

Pamela Contag is a microbiologist who’s as comfortable in the lab as she is in the boardroom, dealing with the business of running a company. She has plenty of experience there, having helped found two startups: Cobalt Technologies and Xenogen. She also sits on the Department of Energy’s Biomass Advisory Board.

Contag is an astute observer of the biofuels industry. With much of the discussion today focused on second-generation biofuels, she points out that it’s still critical for people not to mix up biofuel feedstocks with human foodstocks. That sure spelled a lot of trouble during the first-generation corn-ethanol buildout, which alarmed the public and still dampens enthusiasm for the biofuels market.

Contag says there’s a list of myths that need to be addressed in order to keep biofuels on track.

“I think the three biggest myths are, one, technology or feedstock will solve our problem. The second is that climate change, energy security and water security are not somehow related. And the third myth is that solar energy to electricity is going to solve all of our problems.”
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The biofuels life cycle - can biofuels eventually
compete with petrochemicals, and if so, when?
(Photo: U.S. Dept. of Energy)

 

As for feedstocks, she says, “I don’t think we have the answer now. But I think we’ll have it in the next five years. What’s needed is for entrepreneurs and investors to look at smaller crops with a unified theme of being able to keep a lot of different seed crops. Think of crops as being renewable but also sustainable in terms of agricultural practices.”

Contag is putting her views to work in her latest startup, Cygnet Biofuels. The company is approaching biofuels with three core fundamentals: low energy, low water and local biomass. It wants to harvest local feedstocks and create fuels like biodiesel for communities, mirroring the early days of electrical utilities in the U.S. “Cygnet believes this isn’t an engineering project but an ecosystem project,” Contag says.

Part of Cygnet’s plan is to integrate a wide-variety of technologies into its power-generation plants, including solar, biodiesel, biobutanol, co-generation and digesters. In the company’s first phase, it plans to produce biodiesel with a business model that calls for extensive partnering to sell the company’s capabilities.

No doubt it will take several years to build out on a local biofuels model. But it sounds like an important step forward. –Lee Bruno

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Green Neighborhood Design ala “Prefurbia”

February 12th, 2009

After spending 25 years designing over 600 communities in 45 states and 10 countries, we wrote the book Prefurbia to make an awareness for those involved in the processes of land development about new ideas, techniques and methods that we had discovered relating to suburban site design. In addition to these new methods, the book explains problems with the current regulatory systems, mostly caused by our minimums based regulations, and ending with an example of a new type of “rewards based” ordinance.

No matter how great it may be, any development plan is secondary to the presentation. The site plan is only part of the process to approval - the best site plan is only as good as the presentation to convince council or planning commission for a “Yes” vote.

These critical public meetings are the most important part of the entitlement process – no “Yes” vote: no deal – simple as that! Each presenter deals with the dog-and-pony show in their own ways with an endless variety of styles (or lack of style).

All of these public meetings have one thing in common –the neighbors (if any) will be there to oppose to the new development. Perfurbia is written from the perspective (needs) of these various parties with the process to approval, the planning commission and council members, the developer, and the design team.

In the old days there were three factions – the developer presenting the plan, the neighbors opposing the plan, and the council listening to both sides. If the development was high profile, someone from the local press might also show up to write an article about the controversy. The planning commission and council are fully aware that all plans will be met with neighbor opposition and they will have to listen to their lengthy complaints along the route to approving (possibly) the developer’s plan. In the past the citizens sitting on these boards would most likely dismiss Elwood and Betsy Smith’s complaint on how a development in their back yard would invade their privacy, and would vote in favor of that new master planned community instead.

Today there is often an additional audience – the entire region of neighbors - when the meetings are televised. The televised council listens to the neighbor’s objections, no matter how absurd they may be, then answers to the camera – the general community watching at home with answers that show they really care about every citizen’s opinion. The televised council member must never appear too much in favor of the developer as it can be misconstrued as not caring about the citizens they represent.

A televised Council member hears the Smith’s complaint and may look into the camera with a very concerned look explaining on how maybe we have too many new homes in this town and proceed to tell viewers that the developer might want to consider a buffer and dropping density. What is happening is that concerns go from developing economically sensible neighborhoods, perhaps to: “please elect me Mayor when I’m on the ballot.”
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Coving reduces surface runoff, enhances privacy, and
exchanges road surface for increased lot sizes, allowing
higher density without punishingly small homesites.
(Image: Rick Harrison Site Design)

The design catalyst for Prefurbia is “coving,” a method created in the mid-1990’s that relies on new technologies to create a more efficient pattern of land development compared to conventional and traditional methods. Without lengthy explanation (the book is the best source for explanation) a by-product of Coving is that for any given density, the length of street is typically reduced by 25% with a corresponding increase in average lot size. Another side-effect is that the lot sizes vary greatly and rapidly from minimum to maximum to create the effect along the streetscape to pulloff the art of coved design.

With the new “green” movement towards environmentally responsible development – coving can be the perfect solution as a reduction in the run-off from paved surfaces combined with the increase in organic area is a perfect foundation for Green Design.

In the early years of Coved design, virtually all the work was done in the USA. Our first large site plan done outside the States, was in Freeport, Bahamas. We designed Heritage Village, which began as a TND layout (by another planning firm) and ended up with our new method of Coving. In 2000 when we were first contacted to design Heritage Village we asked about doing presentations to the city council and planning commission to help move the approval process along. We were told that the development company and the regulating entity were the same, if they liked the plan it would be built! That is exactly what had happened.

Our next attempt of the Coving outside the USA were not so easy. In Mexico City we were told to keep the minimum and maximum range of lot sizes under 20% - a regulation which essentially kills the use of coving to be efficient, however later we found the Monterrey region of Mexico more progressive to work with.

In Puerto Rico, the horizontal regulations were no problem to work with, but the vertical (slope) regulations were problematic in Coved design in steep slopes. These slope regulations did not have alternatives which would have made more sense – they were untouchable. On relatively flat sites – no problem, steep sloped sites are very difficult to comply with (not impossible but difficult) when coved.

Since then we wrongly assumed that planning outside the USA could have similar problems with restrictions that were absurdly prohibitive for designing great neighborhoods. In Puerto Rico, when we asked to sit down with the government officials to change policy to create better neighborhoods, the developer said - no. At the time we did not understand why it was so critical that we were rejected to suggest changes.

It was only when we worked in Bogota, Columbia that we realized their systems may not be so backwards after all… Last year we were hired to do some significant planning work in Columbia. My first request was that we meet with the authorities to show them new ways to design neighborhoods and start working on changing the regulations, and were given (like Puerto Rico) an absolute – NO!

Unlike Puerto Rico, the basic setback and engineering minimums were not as restrictive and did not limit the design process. We then asked to present the plan to the authorities – and were told that was not necessary. Being it was Columbia you can imagine that at first we thought: Cartels? Corruption? The reality was much simpler. Since our plans met the minimums (they actually exceeded them), they were automatically considered approved! Imagine that – no neighbors to complain! If everything conforms – it should be approved – right? Just plain old common sense! That was exactly what was going on in Puerto Rico – in Mexico City, in fact in many countries we would think were backwards were in fact very forward thinking. Developers who follow the zoning – who follow the minimums do not need public meetings!

When you think about it, in this country if the development being submitted meets or exceeds the zoning (and the subdivision regulation minimums), why does it need to go through any of the public approvals at all? The American Developer often faces months or years of delays, enormous interest payments, the tens of thousands (perhaps hundreds of thousands of dollars) spent on consultants and legal help for plans that conform. Instead that massive sum of money could go towards making a better neighborhood, better architecture, better landscaping, less environmental impacts! What a concept!

Reducing minimums would still require public meetings, however. The public would still have plenty of input when the regulations and zoning changes. Those types of meetings should be public to get citizen input. If the developer is proposing something that goes below minimums or does not conform to zoning, then it is reasonable to go through the more time consuming process that we currently have.

So this brings up the question – how would the developer introduce something different to the written law? This could be a particularly bad problem under typical PUD (Planned Unit Development) regulations which typically give blanket changes to the minimums when alternative designs are not covered by straight zoning. This PUD Pandoras box, once opened can have devastating results when the staff and neighbors both agree that the plan is simply not good enough.

When the developer thinks the plan is just fine a battle of wills ensues that can last years of revisions and legal battles – in the end these expensive delays increase lot costs – the home buyer ultimately pays. The problem is that most PUD’s are simply too vague.

If a PUD ordinance, or any special ordinance such as Cluster Conservation, or Coving was specifically spelled out – developers would get rewarded for great plans complete with open space and connectivity(typically density and setback relaxations). Simple and somewhat easy to administer.

Perfurbia’s hundreds of new concepts, methods, and industry bullet points are a wealth of information useful to anyone involved with land development. But what we began to realize after writing Perfurbia, is a new thought – how did we take something so simple and let it get so out of control?

These “third world” countries that are so progressive as to actually allow developers who comply with the rules to quickly build their neighborhood – maybe are not so third world after-all. Perhaps we have the regulations and systems as it exist is to keep the system “busy” with many billable hours. Imagine if we could simply get a plan stamped and the next day construction could begin. How many billable earning hours are eliminated, how much less construction and land holding interest saved? That would be very hard to calculate, but it’s most likely significant.

It is difficult to get a man to understand something when his salary depends upon his not understanding it…
Al Gore - “The Inconvenient Truth”

The inconvenient truth won’t win me many friends in the consulting industry who’s income depends upon generating billing time (meetings), but can we afford to continue down the path we are presently in?

Rick Harrison is the President of Rick Harrison Site Design (www.rhsdplanning.com), and author of Prefurbia, published by the efforts of Sustainable Land Development International, www.sldi.org and available directly from www.prefurbia.com.

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Low-Hanging Fruits of Efficiency

February 9th, 2009

The push to reduce energy consumption is broad and deep. And for homeowners who are looking to reduce their energy costs, there are standard practices, such as turning down the thermostat, changing out light bulbs and purchasing energy-efficient appliances.

But the U.S. building sector’s energy consumption is still expected to increase by 35 percent between now and 2025 and commercial energy demand is projected to grow at an average annual rate of 1.6 percent, reaching 25.3 quads (1015 Btu) in 2025.

That translates into a critical need to develop and deploy emerging energy-efficient technologies that can deliver reliable energy and peak-demand reductions throughout the lifespan of a building. And we all know we like energy savings right alongside the comfort of a home that is reflective of our lifestyles and concerns for our environment.

What’s the urgency and why push for energy efficiency?
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Arun Majumdar, professor of department of mechanical engineering and materials science and engineering at UC Berkeley puts climate change and energy efficiency into perspective.

“We are sitting on the Titantic and takes three miles to turn the ship to avoid the iceberg, which is 2.5 miles in front of us,” Majumdar said recently at the JUNBA Symposium in San Francisco. “And some are shuffling the deck chairs.”

“Energy efficiency is the lowest hanging fruit you can find,” Majumdar said recently at the JUNBA symposium in San Francisco. “We need to look at the demand side and the energy efficiency side of the picture.”

There’s an assortment of low-tech innovations that can address this need in buildings, which are energy sieves. Experts say that automated technologies such as motorized roller shades and daylight-controlled dimmable fluorescent lighting systems have big upside potential.

That’s because those technologies principally target two of the largest categories of energy consumption in commercial buildings: lighting and space conditioning (cooling/ heating). Keep in mind this last figure about buildings and energy: some 40 percent of the energy used in California is consumed by buildings. And some 12 percent of energy goes into the actual building of the structure.

Recently, the New York Times built its new headquarters in Manhattan and decided to invest in an assortment of these energy efficient technologies showcased on Lawrence Berkeley National Lab’s Environmental Energy Technologies Division.

The performance data helped convince the owners that these technologies were the right stuff for a 21st century building. It will take time to convince a broad base of companies about the costs and merits of putting these technologies into practice. In the long run, the data and case studies revealed on the above reference website should be enough of a testimonial to convince those sitting on the fence. –Lee Bruno

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Bacteria-Powered Recovery of Toxic Metals

February 4th, 2009

Selenium is a potent environmental contaminant produced by oil refineries and chemical plants. Removing it from industrial wastewater takes time and money. To date, the process has involved a chemical process that employs catalytic reduction to convert selenium to an inert form.

Japanese researchers from Osaka University and Shibaura Institute of Technology have now developed a new way to use a strain of bacteria to recover selenium in wastewater. The researchers’ novel approach uses a bioreactor. In the reactor, the conversion of toxic selenium to a nontoxic form takes about 50 hours.

Once the recovery process is completed, the resulting waste sludge is burnable ash instead of water-laden sludge, which is costly to remove and dispose. Another benefit: the process permits recovery of Se, which has gone up in price from $2.01 per pound in 1996 to $47.4 per pound in 2005.

Researchers Satoshi Soda of Osaka University and Mitsuo Yamashita of Shibaura Institute of Technology have a developed a pilot plant reactor with Shinko Chemical in Japan that was completed last year. It has two bioreactor vessels and is able to process 400 liters of sludge at a time and 0.2 million gallons in a year. The researchers have plans to build larger systems for testing and validation. Researchers recently presented their findings at the Japanese University Network in the Bay Area (JUNBA) 2009 symposium in San Francisco.–Lee Bruno

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Buoyed By Power

January 26th, 2009

With the hunt for powerful energy generation innovations in full swing, there’s been some investment moving into the ocean. Let’s face it, waves and currents aren’t likely to stop anytime soon.

SRI researchers have cleverly applied a biological muscle technology to the guts of a wave generating buoy. The researchers recently demonstrated the buoy in Santa Cruz harbor, an hour drive south of San Francisco.

The bobbing buoy works a bellows like span of special electrical conductive material to generate electricity. Its not something that SRI pioneer Douglas Engelbart predicted at his Jules Verne like demonstration in 1968, but like his innovation inspired to help our thinking and collaboration it springs from our how our muscles work.


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A Wave Generating Buoy
(Photo: SRI)

This new device, which was jointly developed by the Japanese company Hyper Drive and uses SRI’s rubbery material, called electroactive polymer artificial muscle – what a mouthful for the name of a rubbery material.

What’s impressive about this material is it functions like artificial muscle and is able to generate electricity when it is stretched and then allowed to return to its original shape. In 2004, the technology was licensed to Artificial Muscle, an SRI spin off company. In a generation capacity, the researchers say that by comparison to other similar wave generation systems the polymer requires fewer moving parts and is both durable and costs less to produce.

Recently, Wavebob, the Ireland based wave energy specialist, says it is about to close an investment round that would give it 5 million euros ($7 million) of capital to fund the development of a larger, 1.5MW device. Wavebob has been testing a 30kW wave power converter since March 2006 off the coast of Ireland, and is now looking to develop and build the larger device. The company already has collaborations in place with energy majors Vattenfall of Sweden and Chevron of the US.

The SRI demonstration revealed that many of these buoys could be used to harvest wave energy that can help power an industrial park or feed into an on-shore electrical grid. The device only generates small amounts of electricity but researchers said future designs are expected to produce many kilowatts of electricity per buoy, thus making it more cost effective.

Nevertheless, that’s a big step to reducing costs associated with ships having to visit the buoys to replace the batteries every As for these buoys being able to generate higher levels of electricity, that will take several more years and patience. Just remember how long it took to achieve some of SRI’s pioneering genius that Douglas Englebart ambitiously demonstrated more than 40 years ago. Lee Bruno

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University Mindshare Goes Green

January 12th, 2009

University projects involving greentech are capturing a lot more mindshare of students and professors these days.

At the UC Berkeley Engineering School, a big shift has happened over the past three years. In 2005 there were few professors focused on the topic of energy. Today roughly 50 percent of the faculty say they’re working on it. That’s a lot of talented people turning their eyes toward solving energy problems.

And the results are encouraging. Last year UC Berkeley licensed technology to 30 companies and half of that total were in the cleantech area, according to Michael Cohen, Director of the Office of Technology Licensing at Berkeley. Also last year, Cohen says, 11 of 18 startups based on UC Berkeley and Lawrence Berkeley Labs innovations concerned greentech.

Still, overall the challenge of bringing new innovations out of the lab and into the commercial world is daunting. Lots of technologies don’t make it across the so-called Valley of Death.

Death Valley, California

At a panel at AlwaysOn’s Venture Summit this past December, people in licensing offices discussed what universities need to better support innovation. Most said they’d like to see the IP licensing process get less onerous. They’d also appreciate efforts to nurture early-stage startups working on ideas that usually take several years to mature into commercial applications.

In terms of technology licensing and IP, Stanford has had a great run over the years, with some 7,000 inventions, according to Kathy Ku, director of the Stanford Office of Technology Licensing. And the university still issues about 100 licenses a year. But Ku said she “would like for more investors to focus on early stage” and help startups cross the “valley of death.”

Cohen used four M’s to define the categories of commercialization of innovations from university labs. They are: morphed, mined, milked and marketed. Morphed technologies are organically grown from research. Mined technologies are opportunistically brought out by entrepreneurs who scour the campus. Milked are systematically grown out of research by corporate collaborators. And marketed technologies are driven methodically to industry by the campus.

He gave some examples from UC Berkeley. Morphed: Seeo, CaliSolar, TaoIt and MicroClimates. Mined: Aurora Biofuels and Abdura Tech. Milked: Ecoprene and Analog Devices. Marketed: World Wide Energy, Luminus Devices, Solexel and Solexant.

Looking ahead, there’s no doubt university research institutions will contribute significantly to the shift to greentech. But overcoming the impediments is still as difficult as ever. –Lee Bruno

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Material Elixir for Oily Water

December 29th, 2008

Oil and water do mix - all too often. And they’re not so easy to separate. Just ask the research scientists trying to develop next-generation water-filtration technologies to do it.
But with the 21st century toolsets of nanotech and chemistry, they promise to overcome vexing problems of cost-effectively removing oil agents from drinking water.
Researchers at Purdue University have developed a new, durable membrane material that does double duty: it separates oil from water (at a 98 percent rate) and cleans itself to prevent clogs.

Those kinds of purification numbers and characteristics offer a unique filtration material well suited for environmental cleanup, water purification and industrial applications.

The material is a modified polyethylene glycol. Water molecules are attracted to it and when they pass through, the oil molecules get trapped.

But the oil doesn’t stick and can later be skimmed off in a self-cleaning flush, making for longer life. The Purdue researchers also say the same technology could be used to create antifogging goggles and self-cleaning eyeglasses by not allowing water to form beads on surfaces.

A new way to separate oil and water.
(Photo: Purdue School of
Materials Engineering
)

The material is still in the experimental stage but it could be built into an experimental cross-filtration device that does not require a lot of energy to push the water through it. This is a big shortcoming to many filtration systems today.

There is also the potential to use the technology in a gravity-fed system, which would be suitable for remote villages and rural environments without electricity.

To date, the researchers have only tested diesel or hexadecane fuel but the team has plans to test other oils such as benzene toluene zylene.

Meanwhile, an MIT research team led by chemical engineer Robert Cohen and mechanical engineer Gareth McKinley has created what it claims are the first “superoleophobic,” or oil-repellant surfaces. They used a polymer developed by the Air Force that contains large numbers of oil-repelling fluorine groups. In order to transform the material into oil resistance, the MIT researchers used lithography to pattern the polymer with overhanging microstructures. In doing so, they gave the material air pockets, which helps suspend liquids and prevent them penetrating to the surface.

The MIT material has extremely low surface energy, in fact lower than the Purdue team’s material. But Purdue’s material has shown superior performance at cleaning oil from the surface of the material.

“Our materials provide for a flat surface where water ‘sees’ a wettable surface and the oil ‘sees’ a non-wettable fluorinated surface,” said Jeff Youngblood, assistant professor of materials engineering at Purdue University. “This is pretty good because if you don’t modify the glass filters with our material, essentially all the oil goes through. If you modify it with our material, then almost none of the oil goes through.”

All of which should eventually become valuable in long-term water-infrastructure developments like the Water Infrastructure Network, which is a a coalition of locally elected officials, drinking water and wastewater service providers, state environmental and health administrators, engineers and environmentalists. The group is urging water-industry professionals to contact their representatives in Congress to push passage of a $20 billion package for water infrastructure. Lee Bruno

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Turning On Solar Thermal Power

December 22nd, 2008

An interview with Dr. David Mills, Chief Scientific Officer and Founder of Ausra:

Dr. David Mills has worked in the alternative energy field for over 30 years. He was born and raised in Canada and educated in Australia. In his University of Sydney lab he developed and licensed the evacuated-tube solar water heater technology, which consists of about 60 percent of the world’s solar collectors and created an advanced double cermet selective absorber coating, which is used in tube receivers by Chinas largest solar company. He also invented or co-invented the Prism solar concentrator (Sol X) and the S evacuated tube reflecting system (Solahart). He’s saved his best for last however, with his pioneering Compact Linear Fresnel Reflector (CLFR) technology, which is what is presently being manufactured for utility-scale thermal solar power.

Solar thermal uses fields of special mirrors to shine the sun’s energy on water-filled piping, which then boils and turns it into steam to run turbines that produce electricity. There is no pollution or use of photovoltaics (solar panels). This technology is literally changing the way our planet will supply its every increasing need for energy free of fossil fuels or dangerous by-products. It provides green jobs, helps stop global warming, is cost effective and can be on the ground running within the next few years. All of North America and Europe’s electrical power needs (day and night) can be generated with this system, by using a desert land area less than 92 by 92 square miles. The parts for solar thermal power plants will soon be available for the world’s leading polluters (China, India, Europe and the U.S.), as well as other continents.
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Ausra’s revolutionary solar field design consists of several mirrors sharing a receiver. This lowers the cost of the mirrors while greatly reducing overall plumbing required.

Dr. Mills and his company (Ausra) have already signed contracts with one of the largest power companies in North America (Pacific Gas & Electric) to deliver 177 megawatts; are building the first U.S. manufacturing plant for solar thermal power systems in Las Vegas, Nevada; and plan on having a pre-commercial demonstration project up and running by the end of this year. One of the other largest utility companies in The States (Florida Power & Light) and its parent (FPL Group), have also taken a close look at Dr. Mills solar thermal technology. Their chairman and CEO, Lewis Hay, states, “As the operator of the largest solar energy facility in the world, we view this breakthrough technology as a promising option.”

I recently interviewed Dr. Mills at Ausra’s headquarters in Northern California. He shared some of his thoughts and insights about the environment, our energy needs and the quickest way to transform our fossil fuel economy to a solar and all-electric society.

Gabriel Constans (GC): It appears that the technology you are using at your present and future power plants can literally change the world and the way it obtains its energy needs. Do you realize that you are someone who, in many respects, could be seen as one of the great scientists and innovators of the century?

Dr. David Mills (DM): This kind of technology will certainly change how we produce and generate energy. This technology can be the big gorilla of generating energy. Presuming the electrified auto sector, it will soon be electricity and oil, not the other way around. There are already 3 battery companies that have batteries which can recharge electric car batteries in minutes. If you put that together with generating technology which is readily available on the grid, you have the ingredients to say we don’t need oil anymore, we don’t have to import oil.

GC: Is there enough private, organizational and government interest to adopt this technology?

DM: These things are world changing in many ways. The common term would be disruptive technology. It isn’t necessarily that way, in a negative fashion, but it does change things. It is positive disruption, though there will be winners and losers. If you look at the rail traffic in the U.S., 80% of it involves carrying fuel. If you don’t need it to carry fuel anymore, than you’re going to have to re-evaluate that industry. On the other hand, if you look at glass (used for solar reflecting mirrors, parts and tubing), it will probably double or triple that industry. Steel will stay about the same, but turbine production will be bigger than ever. There will be a lot of impacts on the economy, but in the end, in terms of employment and energy efficiency, the economy will be a superior economy.

GC: At what point are you in the process? When will you figuratively turn on the switch?

DM: We have developed a proprietary system to store energy. We’ll be developing and demonstrating this storage unit at a pre-commercial test facility in California this year. We anticipate that we’ll have energy storage commercialized by 2010. Having a turbine built and delivered is presently between 2-3 years. It’s the turbines which may cause some delay, not the know-how or technology. Similar companies, (such as Sterling) are facing the same issue. What convinces people is a plant on the ground. One can wave their arms around a lot at conferences, but the real deal is to have it working, having it connected to utilities and having it operating reliably. At that point people will get it.

Dr. David Mills

GC: How is thermal solar technology being accepted in the rest of the world?

DM: The entire field is going to progress very quickly. The greatest development is taking place right now, especially in the U.S. In Europe that isn’t so much the case. They set up a system called “feed in law” which is giving a comfortable amount of income to companies. They could continue to take the old designs and run with it for security. Here (in the U.S.) the market is tougher and more competitive, which means costs are kept down, so were seeing real development going on here. In my opinon, they aren’t lowering the feed in laws fast enough in Europe. For it to work around the world, you have to set up parallel corporations that can be competing in markets using these technologies. There are already other companies in the U.S., as well as other countries and companies that are interested. This will happen, but to manage this great of growth is going to be a serious challenge. There are many places that need electricity for social betterment, but social betterment is not the same thing as environmental rescue. They both have to be done. It’s a matter of prioritization.

GC: How did this all come about?

DM: I came up with this design and system independently, but once I did research I discovered that at least 2 other groups had attempted to go down this path before. One in the 1960’s built a small unit, including an Italian that built one in Southern France and another in the U.S. that tried but didn’t get very far with funding. We basically resurrected the idea. Other companies that are doing similar projects descended from us in one way or another. They’re all people that were involved with us or came in contact with us.

GC: What will it take to get power from companies using solar thermal technology to the public?

DM: We don’t have to put in an entirely new infrastructure for this technology, in the short term. In about 10 years you’ll get to the point were you need new power lines and new cross-continental low-loss DC lines to get that power to heavy population centers, like in the North East. People are going to have to get used to the idea that just like we have a trans-continental highway system, we need a trans-continental transmission system. Similar discussions are going on in Europe, such as the transmission of power from North Africa into Europe. We can build these things very quickly. What is generally the limitation is the present infrastructure, which people tend to like to run until it dies. Most of the existing plants will be gone in 40 years. If we decide on a Marshall Plan for energy, it’s possible to have it completed in 25 years. It would have to be global and would be the biggest thing ever. It would be an infrastructure that benefits everyone all the time. No matter what happens, its going to be a profitable exercise for people.

GC: Aren’t people reluctant to trust large corporations and power companies? Isn’t that why there has been such a push over the last 20 years for people to be independent and to have individual sources of energy for their own home or business?

DM: People sometimes confuse their dream of autonomy and independence from utility payments with the desire to be free of entanglements. The fact is, our economy involves a lot of people, a lot of transport, there is a lot of industry and community activity that goes on. It isn’t just an individual home owner off by themselves. The home is not the major part of electricity consumption or source of pollution. We shouldn’t be afraid of a utility scenario. From a practical point of view, it’s easier to put in a number of large plants very quickly, compared to convincing everyone individually that this is a good idea. In the end, both kinds of societies are possible, but I think this one can go much more quickly. It’s not to say the small scale won’t work, it’s simply a matter of time. Right now, we can change the amount of green electrons flowing through everyone’s circuits instead of a few. The source will be different, though the electricity is the same and we don’t have to change a lot of infrastructure. People shouldn’t be afraid of the large utility companies just because they’re large.

It only takes about 92 miles by 92 miles of a solar thermal plant to fulfill the energy requirements for North America and Europe. That’s not big. That’s smaller than a mining footprint for coal. It’s a benign system. People living next to this type of technology don’t mind them. We’re finding its more acceptable than wind power. Thermal solar power already exists. We can also store the energy created, so it carries us throughout the year and in all kinds of weather. It’s possible here and now and throughout the world.

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