Even at historically low natural gas prices, bioenergy may not be out of the running — it just may need a little help from the sun. A new study from researchers at the University of Minnesota examining the financial viability of solar-heated biomass gasification technologies that produce a natural gas substitute product concludes that combining these renewable resources can make economic sense.
In traditional biomass gasification, 20 to 30 percent of the biomass feedstock is burned to produce heat for the process. But if the required thermal energy is supplied from a concentrated solar source, all of the biomass can be converted into useful synthesis gas. The study, published in Biomass and Bioenergy this week, developed a financial feasibility metric to determine the breakeven price of natural gas at which the produced syngas could be sold at a profit. The study suggests that solar-heated biomass gasification systems could break even at natural gas prices of $4.04–$10.90 per gigajoule, depending on configuration. Continue reading
This week’s Frontiers in the Environment was presented David Letterman–style by Energy Transition Lab executive director Ellen Anderson and Energy Transition Lab faculty director Hari Osofsky, who is also an IonE resident fellow and Law School professor. The pair explored the “Top 10″ key areas of energy transition and the Energy Transition Lab’s role in them. Continue reading
Minnesota farmers spend more than $400 million per year on nitrogen fertilizer. To keep more dollars in the Gopher State and reduce fossil fuel consumption in agriculture, the University of Minnesota’s West Central Research and Outreach Center is using wind energy to produce anhydrous ammonia that can be used as fertilizer. The project was funded through an IonE Initiative for Renewable Energy & the Environment grant. Continue reading
A global partnership led by Institute on the Environment researcher Jill Baumgartner will investigate the health and climate impacts of advanced cooking and heating stoves as part of a three-year study on clean household energy technology in rural China. Continue reading
In an age when debates over fracking and renewable energy dominate the news, it’s increasingly clear that the United States is in the midst of an “energy renaissance.” Along with a host of environmental concerns, the nation’s changing energy system faces a new, often overlooked, challenge: How can we get energy from its source to the people who need it?
That was the topic of Institute on the Environment resident fellow and University of Minnesota Law School professor Alexandra Klass’ Frontiers in the Environment lecture Dec. 4.
In “Transporting Energy: U.S. Infrastructure Challenges,” Klass discussed her research on the physical and regulatory system in place for moving oil, natural gas and electricity and possible changes needed as the nation’s energy sources diversify.