Agriculture

Operating a 30-megawatt solar farm from one PC

MOSCA, Colo.--Within a few days, Nick Thiel will take control of about 110,000 high-end solar panels pumping 30 megawatts of power onto the grid from a former potato and carrot farm.

Thiel is operations manager of the San Luis Solar Ranch, a 300-acre facility in the San Luis Valley in southern Colorado, a high-desert area considered ideal for solar power generation. I visited the solar ranch during a week-long expedition of energy-related locations in New Mexico and southern Colorado organized by the Institutes for Journalism & Natural Resources.

The SunPower solar panels, which cover 220 acres themselves, are … Read more

USDA awards $44.6 million for biofuel projects

The U.S. Department of Agriculture announced this week it has set aside $44.6 million to fund a variety of advanced biofuel production projects in over 38 states.

The 156 projects, it should be noted, are not aimed at achieving research breakthroughs. Instead, the money will help expand existing facilities using established technologies to produce fuel from renewable biomass.

The funding is coming via the USDA's Bioenergy Program for Advanced Biofuels and includes projects of all types, producing things like ethanol and biodiesel, and even harnessing landfill and sewage waste treatment gas. The projects include biomass resources like … Read more

Can a desert tree fight global warming?

Scientists at Tel Aviv University say they have a novel idea for combating the negative effects rainforest deforestation is having on the planet.

The group, led by Amram Eshel and Aviah Zilberstein, professors at TAU's Department of Molecular Biology and Ecology of Plants, have successfully grown a forest of salt cedars in the Aravah Desert using only a small amount of recycled sewage water and salt water left over from desalination plants.

The scientists used different varieties of the botanical genus of salt cedar trees called Tamarix, which is indigenous to old-world deserts. They're known for thriving in … Read more

From coal to biomass for some Virginia power

Some Virginians will soon have forests to thank for their electricity.

Biomass manufacturer Enviva has signed a contract with Dominion Virginia Power, a subsidiary of Dominion, to supply wood waste chips to two power plants that are being converted from using coal to renewable biomass.

Dominion Virginia Power had announced in April its intention to convert three 63-megawatt coal-burning electricity plants into three 50-megawatt renewable biomass electricity plants. Specifically, it plans to convert its Altavista, Southampton, and Hopewell, Va., plants. The Southampton and Hopewell plants have contracted to use Enviva wood waste chips pending approval from the Virginia State Corporation … Read more

Rising biomass demand could drive land grabs

Rising global demand for cleaner energy from biomass could drive more land acquisition in poorer nations where food security and land rights are weak, an International Institute for Environment and Development report said today.

"If left unchecked, the growing pressure on land access could undermine livelihoods and food security in some of the world's poorest countries," the London-based nonprofit research group said, calling for more public scrutiny into global biomass expansion plans.

Biomass energy makes up 77 percent of world renewable energy, and trees and woody plants account for 87 percent of that biomass, the report said. … Read more

'Most Efficient' Energy Star rating introduced

In addition to products with the basic Energy Star rating, consumers can now choose to buy even more efficient products with the help of a new rating.

The U.S. Environmental Protection Agency and U.S. Department of Energy introduced last week an additional rating it calls Energy Star Most Efficient.

Consumer electronics and appliances with the Energy Star Most Efficient seal will signify those products that have exceptional efficiency within their product category. The seal will only be awarded to the top 5 percent of models. It will initially be introduced in five categories: clothes washers, heating and cooling … Read more

Intel, Whole Foods lead in green-power purchasing

Chip giant Intel procured over 1,493 gigawatt-hours of renewable energy in 2010.

That's according to a survey of over 1,000 companies that was conducted by Bloomberg New Energy Finance in conjunction with wind turbine giant Vestas Wind Systems.

The index developed from this new survey is called the Corporate Renewable Energy Index (CREX). (For a PDF of the white paper on the survey, click here.) For its inaugural release the CREX released rankings of companies based on the amount of renewable energy they procured both in 2009 and 2010.

For 2010, the top five companies with the largest renewable electricity procurement were: Intel, clothing retailer Kohl's, Hong Kong electric company CLP Holdings, supermarket chain Whole Foods Market, and the Dutch telecom Koninklijke KPN.

For 2009, the ranking was Deutsche Telekom, Intel, PepsiCo, BT Group, and clothing retailer Kohl's.

Keep in mind that no one is suggesting these companies are gleaning electricity directly from local solar or wind farms. While some companies do directly support renewable-energy projects, over 80 percent of the renewable electricity procured by the companies surveyed was purchased in the form of renewable electricity credits (RECs).

And while Intel procured the most renewable electricity in 2010 at over 1,493 gigawatt-hours, on a percentage basis it's actually Kohl's that wins. In 2010 the retailer purchased so many RECs, it statistically can say it garnered 100.4 percent of its energy from renewable sources.

In conjunction with the CREX, Vestas also had TNS/Gallup conduct a survey on wind energy procurement in particular.

When it comes to wind, Whole Foods tops the list. The supermarket chain gets 100 percent of its electricity from wind energy, followed by North American bank Toronto-Dominion Bank at 78 percent, and software giant Adobe Systems at 65 percent, according to the Global Consumer Wind Study 2011.

More statistics and rankings of companies by industry can be found in Appendix D (page 30) of the CREX white paper (PDF) released by Bloomberg New Energy Finance and Vestas.… Read more

MIT study: Biofuels not necessarily greenest choice

Biomass used to make biofuels must be carefully sourced, or the biofuels they produce may be no greener than conventional jet fuel.

That's according to a study that was published this week in the online version of Environmental Science and Technology and was conducted by a group of scientists at the Massachusetts Institute of Technology.

For the nearly four-year study, researchers conducted a life cycle analysis on 14 diesel and jet fuel sources made from feedstocks, and identified the key factors that make a difference in whether a biofuel is truly an environmental improvement over conventional jet fuel.

The … Read more

Algae fuel crosses paths with Monsanto, cancer research

March is known as the green month, so it's fitting that only one week into it there's already some interesting news for algae fuel supporters.

Agricultural giant Monsanto today announced it's signed a deal with algae-crude producer Sapphire to collaborate on genetic engineering research that could be applied to both algae and agricultural crops.

The research involves identifying traits in algae genes for growth and durability. But the science can also be applied to plants like cotton, soybeans, and corn, according to Sapphire.

As part of the deal, Monsanto is making "an equity investment" in … Read more