Advanced biofuels have been in a bit of a pickle of late. For the past two years, one disaster after another has struck the industry. First came the over-build of corn-based ethanol plants during the heady days of $120 per barrel oil. Overheated commodities markets did more than drive up the price of oil – they whipped corn prices to a lather too. When oil crashed, so did first generation ethanol companies as they were caught in a commodity squeeze play. For reference purposes, see my chart below that compares the price of one gallon of oil to the price of enough corn to make one gallon of ethanol (assuming typical yields of 2.8 gallons ethanol yield per bushel).
Ethanol suddenly went from green energy investment darling to food versus fuel donkey as the economics collapsed and consumer groups pinned the blame on ethanol for high food prices.
Over the past decade, pioneering researchers and companies cultivated technologies and microbes for creating ethanol from non-edible cellulose. Cellulosic ethanol – fuel from non-fuel sources like switchgrass, woody biomass, garbage and other non-edible materials – promised to save the day. At the same time that technologies were being perfected and readied for scale-up, the global financial crisis hit. Speculative capital fled to the sidelines creating a “Valley of Death” for second generation biofuel companies that needed big slugs of capital – bigger than most venture capital firms are prepared to risk - to build pilot plants to prove their technology, and demonstration plants to prove their processes can scale and make money. Proving new technology is hardly the stuff of bank lending, which is all about reducing risk to a minimum and predictable rates of return. This left two potential sources of capital to fund the development of a viable cellulosic ethanol industry: large petrochemical companies making strategic investments or the federal government.
Petrochemical companies have definitely stepped-up, putting hundreds of millions of dollars into the sector, however, their investments are very targeted on a few companies (Exxon-Mobil setting aside $600 million for Synthetic Genomics, Shell’s backing of a Verenium cellulosic ethanol project, the Dupont-Danisco joint venture, and Indian Oil’s investment in Petroalgae come to mind). However, the rest of the sector languished even as the DOE poured money into car batteries, wind turbines, solar panels, energy efficiency and almost anything else “green” except biofuels.
The drought ended with the recent news that the DOE is putting $564 million in backing for 19 biofuels and renewable chemicals companies and projects. See the DOE article at Biofuels Digest for the complete list of investments.
This is an extraordinarily important announcement on a number of levels. Perhaps most significant is the political symbolism. It sanctifies the sector as a government-approved viable path to clean energy. Each of the projects is also backed by some level of matching private money – a total of $700 million; for a combined total of $1.1 billion. This makes for a very signficant financial scale and scope. Finally, the portfolio effect is vitally important to the success and health of the sector. A diverse range of projects and companies are receiving backing, including
Bluefire Ethanol and Enerkem – for large-scale waste to energy projects
Sapphire Energy, Solazyme and Algenol - for algal fuel
Amyris Biotechnologies, Zeachem, Clearfuels Technology and Logos Technologies – for cellulosic fuel development
The DOE move breathes new life into second generation biofuels and helps move us toward a renewable fuel economy built from non-food sources. All in all, it’s a smart investment in a sustainable future.
There are many other companies and technologies worthy of backing. Hopefully this vote of confidence from Uncle Sam will pave the way for others to invest in the sector.




9 Jul
Gigaton Throwdown Podium: Gold – Building Efficiency, Silver – Biofuels, Bronze – Construction Materials
Posted by Chet Geschickter in biofuels, commentary. Tagged: biofuels, climate change, efficiency, funding, geothermal, GHG, solar, wiind. Leave a Comment
A new report issued by the non-profit Gigaton Throwdown provides a sector by sector look at renewable energy and its potential impact on reducing greenhouse gas emissions over the next decade. The big hairy audacious goal is to identify what it would take for each of the key sectors of cleantech to achieve a 1 gigaton reduction in greenhouse gas emissions.
Gigaton Throwdown Report - A Comprehensive Cleantech Study
So what’s a gigaton? Just like it sounds, 1 billion tons – of CO2.
To attain gigaton scale, a single technology must reduce annual emissions of carbon dioxide and equivalent
greenhouse gases (CO2e) by at least 1 billion metric tons — a gigaton — by 2020. For an electricity
generation technology, this is equivalent to an installed capacity of 205 gigawatts (GW) of carbon-free
energy (at 100% capacity) in 2020.
I found the comparative levels of investment in different cleantech technologies needed to achieve the 1 gigaton target very illuminating. Instead of ROI, we could call it ROCI (return on carbon investment). Here is the rank-ordered scorecard for the different sectors. Sectors requiring the least investment deliver the biggest bang (or reduction in carbon emissions) for the buck, so they rank highest:
1. Building Efficiency: $61 billion. This makes a lot of sense. Buildings represent the single largest consumers of energy (around 40%). Most buildings are energy sieves, they account for the vast majority of electricity use, and a significant portion of electricity production is from nasty coal-fired plants.
2. Biofuels: $383 billion. The fact that biofuels ranks second comes as a bit of a surprise to me – albeit a pleasant one given that I am now a principal in a biofuels consulting group called Biomass Advisors. Biofuels have been under a bit of attack lately, both in terms of economics and with the whole indirect land use charge (ILUC) controversy. Fortunately, the recent climate bill compromise has deferred any application of ILUC penalties on biofuels for the next five years. The report uses 150 billion gallons of cellulosic ethanol as a benchmark for a gigaton of CO2. The report also points out that, in the case of switchgrass, if electricity cogeneration is included the amount needed to achieve a 1 billion ton reduction in CO2 drops to 76 billion gallons of fuel.
3. Construction Materials: $445 billion. The report estimates worldwide emissions from construction material manufacture at 4 to 4.5 gigatons per year. It cites an example of halving CO2 emissions from concrete by substituting low carbon concrete for half the worldwide production of portland cement. Other practices touted in the report include:
Bio-composites happen to be closely related to the biofuels process. Producing polymers and other materials from biomass is simply another form of carbon manipulation to create more complex carbon chains instead of, or as an adjunct to, biofuels or biogas.
From here, the numbers get a little dicey.
4. Geothermal: $919 billion. The report calls for Enhanced Geothermal (EGS) systems: “in which heat is extracted from the earth by injecting fluid into an artificially created, hydraulically fractured reservoir that attempts to replicate natural hydrothermal conditions.” The report estimates that “An increase of approximately 238 gigawatts (GW) of geothermal electricity capacity over today’s installed base of 10 GW would reduce CO2e emissions by 1 gigaton per year.” It goes on to estimate the cost per Kw installed at $3,900. Unlike solar or wind, geothermal can generate steady power output; making it a viable future source for base load.
5. Nuclear: $1.27 trillion. According to the report, it will take “Approximately 250 new GW-scale nuclear plants would be required by 2020 – a 67% increase in the current nuclear base – to reduce CO2e emissions by 1 gigaton annually.” Note that, unlike geothermal or biofuels, there is little in the way of speculation on emerging renewable energy technologies in the nuclear scenario. Nuclear plants are proven – as long as you’re okay with large-scale creation of radioactive waste – plus, they also generate valuable “base load” or power that is always available, whereas wind and solar depend on climate conditions so they are variable.
6. Wind: $1.38 trillion. Hmm. Sounds like a lot of money. However, the report goes on to make assumptions about improvements in the technology that could bring the figure closer to a cool $827 billion. It goes on to point out that wind could reach the gigaton reduction mark by 2020 handily, even if recent growth rates of 28% per year in installed capacity slow to 14% per year over the next decade.
7. Solar Photovoltaics: $2.1 trillion. The ROCI from solar panels is more than a little abysmal – according to the report. However, unlike it’s concentrating solar brethern below, solar PV is already reaching a critical mass and, with the amount of subsidies in place around the world, poised to grow further. Current installed capacity is estimated at 14 gigawatts.
8. Concentrating Solar Power: $2.24 trillion. The numbers and the assumptions are getting a little (strike that – a lot) more speculative on this one; as worldwide installed capacity would need to go from 502 megawatts today to 492 gigawatts – almost a 1,000 fold increase – over the next decade. I don’t see $2.24 trillion being poured into deserts with no water to generate solar thermal electricity anytime soon. Will more capacity come online with this hot new technology (pun intended)? Sure, but the gigaton bogey seems like a bridge too far.
Here are my simple takeaways in layman’s terms:
First, we need to fix the leaky energy sieves we call buildings – the sooner the better. This, more than anything else – is the quickest way to turn down the planetary stove we’ve created with this sloppy little socio economic thing we call industrialization. Second, as far as renewable energy goes, either the report is way off, or the collective “wisdom of crowds” is quite ignorant. I say this because the level of investment and interest in renewable energy technologies is, approximately, upside down. It appears that the most money is going into the renewable technologies with the worst payback in terms of CO2 emissions reductions. At face value, this report indicates that we are better off investing in biofuel technology and capacity than we are with almost any other renewable energy source.
Gotta go. Gotta biofuels consultancy to help start up.
cg