Archive for the ‘biofuels’ Category

100% coal-to-biomass conversion reduces GHGs by 92 per cent: study

Monday, February 1st, 2010

Ontario is making solid progress with its plan to convert some of its coal-fired power plants to biomass. And not just co-firing, like what many U.S. jurisdictions are considering, but full out 100 per cent biomass burn. It will prove a key part of Ontario’s greenhouse-gas reduction strategy. A new University of Toronto study has concluded that converting coal-fired units at the Nanticoke and Atikokan plants to burning wood pellets would reduce GHGs by roughly 92 per cent, and this is based on a full lifecycle analysis. On top of that, it would create a local biomass supply chain — for harvesting, pelletization, transportation, etc. — and local jobs that simply don’t exist under a coal-only regime. OPG also plans to operate the plants as peakers, meaning they could be used to help manage renewables (i.e. there would be less natural gas required to perform this balancing act).

I have an update on Ontario Power Generation’s biomass strategy in today’s Clean Break column. OPG will likely convert Atikokan to 100 per cent biomass by 2012, with some units at Nanticoke likely to follow a year later. Lambton and Thunder Bay plants are also being considered. The OPG executive heading up the transition, Chris Young, says the company is seriously investigating a fuel pellet mixture with both wood and agricultural residues (or dedicated crops, like switchgrass). OPG figures that coal plants converted to burning biomass will likely operate for another 10 years before decommissioning, at which point the pellet supply chain will be firmly established and the move to build a distributed fleet of newer biomass-burning plants can begin.

And what is U of T’s estimated cost of supplying electricity from an existing coal plant converted to burning 100 per cent biomass? Roughly 12 cents per kilowatt-hour, which excludes the impact of carbon prices. Given that natural gas won’t stay low forever and will eventually be subject to carbon pricing, this makes the biomass option competitive (also with wind and nuclear) and at the same time is a winner when it comes to local green-collar job creation.

If OPG can pull this off, it would be another Ontario first — and something other jurisdictions can learn from.

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The challenge of life-cycle analysis in a world of rapid innovation

Friday, January 29th, 2010

There was a big stink this week when a published study, led by University of Virginia civil engineering professor Andres Clarens, concluded that producing biofuels from algae isn’t as climate-friendly as many people believe, at least when compared to getting biofuels from switchgrass, canola, and – Huh? — even corn. The results, according to an abstract of the study, “indicate that these conventional crops have a lower environmental impact than algae in energy use, greenhouse gas emissions, and water regardless of cultivation location.” Why? Because of the need to supply more nutrients — i.e. fertilizer — to algae to stimulate growth, and fertilizer is energy-intensive to produce.

The problem with this conclusion? Clarens based the life-cycle analysis on data that was mostly 10 years old. For example, some current algae cultivation practices, particularly those based on wastewater or sea water, tackle the fertilizer issue head on. So the age of the data is an important bit of information that should have been made very clear in the study — even the abstract. Ten years in the world of technology, particular cleantech, is a long time. I mean, the big R&D push around algae-based fuels only began three or four years ago, and 10 years ago the “cleantech” sector didn’t exist in name. Ten years ago the world was still wrapping its head around Y2K, George W. Bush was just getting into office, Google was still a start-up years from going public, and the TV show CSI (the original one) had its world premiere. In other words, you can expect data about algae cultivation to be, well, rather useless as a reflection of current practices.

This isn’t to blame Clarens. As he told the New York Times’ Green Inc., the most current data out there is simply unavailable to academia. It’s proprietary. (more…)

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Two Canadian CO2-suckers get funding: CO2 Solution, Pond Biofuels

Sunday, December 20th, 2009

Algae or enzymes? That is the question. Both are moving forward as an approach to capturing CO2, and both are getting funding. Quebec City-based CO2 Solution announced last week that Codexis Inc. acquired a 17-per-cent stake in the company for $2 million. The two companies have signed a joint development agreement whereby they will collaborate on the use of “enzymatic carbon capture” technology.  CO2 Solution has developed a process that relies on the enzyme carbonic anhydrase to extract carbon dioxide from the smokestacks of coal power and industrial plants. This particular enzyme is used by humans and other mammals to extract CO2 from the blood stream that is later exhaled. Codexis brings to the table a way to improve the ability of this enzyme to thrive in harsh industrial environments. The companies are betting that this approach will be less energy-intensive and therefore less expensive than other solutions in development or on the market.

Meanwhile, Toronto-based Pond Biofuels Inc. says one of its CO2-to-algae demonstration projects has been approved as part of the Asia-Pacific Partnership on Clean Development and Climate program. The company, in partnership with cement manufacturer St. Marys Cement, has established a microalgae facility that uses CO2 from the neighbouring cement plant as a source of nutrients for the organisms. The algae is then expected to be harvested and used as biomass fuel in the plant’s cement kiln. Pond Biofuels will now get funding under the Asia-Pacific Partnership for a feasibility study that will assess the suitability of its technology for the cement industry in China.

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The big boys of industry move into next-generation algae fuels

Saturday, July 25th, 2009


I’ve got a lengthy feature in the Toronto Star this weekend about the recent wave of activity around algae as a source of renewable fuel. Now, in the past there has been no shortage of algae-to-biofuel startups — some have already failed, others have managed to raise money and continue to work away. But the new wave of startups — Algenol Biofuels, Catilin, Synthetic Genomics and others — have two things going for them. One, they’re overcoming one of the biggest economic obstacles, which is the difficulty and cost involved with harvesting algae so that they can be processed for their oils. Instead, these new startups are developing strains of algae that continuously produce and actively secrete oils and ethanol. By turning the algae cells themselves into microscopic refineries, several process steps can be eliminated along with costs. Second, these startups are also hooking up with some big partners in industry to demonstrate that their technologies can be scaled to a size that matters. Algenol has hooked up on a massive demonstration project in Texas with Dow Chemical, while Synthetic Genomics (Genomics pioneer Craig Venter’s company) recently snagged $300 million in funding from ExxonMobil, which has committed $600 million to algae fuel R&D and says it will contribute billions of dollars more if efforts over the next few years prove successful. Honeywell, by the way, is leading the charge in turning algae oils into green jet fuel, and it’s working with Boeing, Airbus and several major airlines to make it happen. Dow, Exxon, Honeywell — these are no corporate pansies. These are serious companies putting flesh in the game.

My feature, by the way, starts out focusing on Florida-based Algenol. Many don’t realize the company’s technology emerged out of research at the University of Toronto, and that founder Paul Woods is a Canadian who was born, grew up and ran a natural gas marketing business in Toronto before heading south at age 36. Algenol’s chief science officer, John Coleman, is the U of T professor who worked with Woods over the past 25 years to perfect the Algenol process.

I’ve said this in many posts before, but I’ll say it again: These are exciting times people. The engine of innovation is in high gear.

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Ontario’s coming carbonomics controversy

Sunday, June 14th, 2009

I had a feature this weekend in the Toronto Star about the cap-and-trade system coming to Ontario and the likelihood an offsets market will be created a year or more before the 2012 launch of the program. The government here is working hard to align our own provincial system with the Western Climate Initiative, in which it is a member, as well as the Waxman-Markey bill under consideration in the United States (which will likely set the North American standard). The idea of allowing a carbon offsets market to emerge in advance of the cap-and-trade launch is a smart one, as it gives industry a way to prepare and it stimulates offset project development before the final cap-and-trade rules go into effect.

But here’s the problem: A good portion of offset projects are also electricity generation projects, such as wind, solar, biogas and hydroelectric. But in Ontario, if you want to sell your electricity to the power authority you sign a 20-year deal under a new feed-in tariff program. The tariffs are generous, but most developers are also hoping to keep the carbon credits they would qualify for so they can be sold as offsets.

Unfortunately for them, the Ontario Power Authority’s contract for power purchases stipulates that it — and by “it” I mean the Ontario government, which is ultimately the Ontario ratepayer — gets to keep all environmental attributes. This raises a number of issues: (more…)

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