energy efficiency and renewable energy

Garbage: The Back End of the Renewable Economy

December 15, 2015 by Steven Cohen

I believe that the Paris climate agreement will be seen as a turning point, when the world community finally agreed to address the climate crisis. One cannot understate the importance of the transition from fossil fuels to renewable energy, and the work of communities, cities, states and nations has now been codified.[read more]

Improved Energy Efficiency May Not Mean Reduced Energy Demand

November 11, 2014 by Steve Sorrell

Improved energy efficiency and reduced energy demand are widely expected to provide the dominant contribution to reduced carbon emissions in the short to medium term. But the link between improved energy efficiency and reduced energy demand (and hence reduced carbon emissions) is not straightforward.[read more]

Is Renewable Energy Less Effective Than Energy Efficiency at Reducing CO2 Emissions?

October 29, 2014 by Willem Post

The policies to implement worldwide renewable energy build-outs are, as of yet, far from sufficient to reduce global CO2 emissions. At the same time, I believe these policies are yielding significant adverse results regarding economic competitiveness.[read more]

LanzaTech's Vulnerability

October 21, 2014 by Robert Rapier

LanzaTech proposes to take waste carbon monoxide from sources like steel manufacturers and ferment that to produce ethanol. Holmgren says that the bacterium they use for their fermentation, Clostridium autoethanogenum, is highly ethanol tolerant.[read more]

Energy Efficiency & Demand Response Keep Power Flowing in Extreme Weather

March 18, 2014 by NRDC Switchboard

Something extraordinary occurred this winter that kept the lights on and people warm during record-breaking cold. Energy efficiency and demand response emerged to save the day, preventing potentially life-threatening power shortages across much of the Midwest and Northeast.[read more]

Modern Alchemy: The Conversion of Anergy to Exergy

March 5, 2014 by Jim Baird

Modern Alchemy

The American economy wasted 86 percent of all the energy used in the production of goods and services. One can easily imagine that waste of this magnitude creates an array of costs that can easily weaken the nation’s economic and social well being.[read more]

Five Reasons Why 2013 Was Not a Waste

January 1, 2014 by Peter Lehner

2013 Energy Year


This year we saw a lot of smart, efficient solutions being put into place to cut waste in this country. We waste an awful lot of resources, including 40 percent of our food and more than half our energy. By continuing to push for efficiency, we can save billions of dollars.[read more]

Information Technology and Sustainability

November 27, 2013 by Steve Seidel

Federal agencies that are trying to meet tougher sustainability mandates can make significant progress toward their goals by taking advantage of more efficient data storage and other information and communication technologies.[read more]

Renewables and Natural Gas are Partners Not Opponents

November 25, 2013 by Edward Dodge

Renewables and Natural Gas

Renewable energy sources and natural gas should be considered as complements and not rivals. A hybrid gas-electric clean energy provides a workable engineering solution while 100% Renewables models fall short of the functional needs of a modern technology intensive society.[read more]


Loss Reduction Could Fund Kenyan Renewables Expansion [INFOGRAPHIC]

November 22, 2013 by Aedan Kernan

Kenya Renewables Expansion

Kenya and other African countries are under pressure to add renewable generation, expand electricity access and keep electricity costs affordable. There is a hidden source of funding that they can tap - reduction in network losses.[read more]

Crowdfunding for Renewables: Game Changer?

November 6, 2013 by Clare Taylor

Crowdfunding of renewable energy projects is growing fast in Europe. If this grassroots movement gets organized in time to access the big money available in the next round of cohesion funding, it could have far reaching effects on the European energy sector.[read more]


Impacts of Shutting Down Most US Coal Power, Part 3

November 6, 2013 by John Miller

US Coal Transition

Most existing U.S. Coal Power can be replaced by new Wind and Solar Power, which will substantially reduce future U.S. carbon emissions. These changes and improvements will also significantly impact Consumer power costs and involve significant environmental trade-offs.[read more]

Grid Parity, Low LCOE Driving 34% Global Renewables Capacity by 2030

October 23, 2013 by Silvio Marcacci

Changing Energy Industry

When it comes to global electricity generation, coal is still king – but not for long. Fast-changing economics mean renewables worldwide will represent 34% of all installed capacity by 2030, and many clean energy technologies are already cost competitive with fossil fuels and only getting cheaper.[read more]

Energy Efficiency: Deconstructing the Rosenfeld Curve

August 6, 2013 by Lucas Davis

Deconstructing the Curve

The Wall Street Journal, Forbes, and the Sacramento Bee have pieces on Arik Levinson’s new NBER working paper, “California Energy Efficiency: Lessons for the Rest of the World, or Not?” The paper makes a nice point, but I worry that it is being misinterpreted.[read more]

New Data Project to Raise Investor Confidence in Energy Efficiency

August 1, 2013 by Katherine Tweed

When the New York State Energy Research and Development Authority wanted to hand out nearly $20 million in residential energy efficiency loans last fall, the organization went to a national rating agency to request the rating of a traditional asset-backed security. No dice.[read more]