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The ORNL Energy Efficiency and Renewable Energy Program conducts research and development on energy-efficient technologies for transportation, industry, buildings, and power; and renewable energy production, storage, and utilization.

An environmentalist-sponsored report claims that by 2050, the United States could sever ties with coal and nuclear power, draw nearly all its electricity from renewable sources and cut its greenhouse gas emissions by more than 80% -- all with existing technology and with a net gain of 14 million jobs to the domestic economy. The report, commissioned by Greenpeace and the European Renewable Energy Council and conducted by Germany's equivalent of NASA, was released this morning at a press briefing in Washington. It is heavy on charts and supporting data and transparent on some key assumptions. And its sponsors call its findings "conservative." At its core, the report envisions a steep drop in the United States' energy use, both in absolute terms and compared with International Energy Agency predictions -- driven by strict efficiency standards. It also projects dramatic changes in the nation's electricity mix, with wind and solar power mushrooming to replace coal, oil and nuclear sources that would gradually go offline.

Grist has a post on new ideas for improving wind power technology, pointing to a Tyler Hamilton "Clean Break" column in the Toronto Star - Wind turbines get fancy. Solar energy sucks up a lot of research attention, partly because solar energy systems still have so much room for improvement. Wind turbines, on the other hand, have been around for over 1,000 years, and although the modern versions are vastly larger and more efficient than their ancient counterparts, the basic concept hasn't changed much. But the standard blades-on-a-horizontal-axle version of wind energy systems (as opposed to more exotic flavors like kites or blimps) may yet be poised for some big leaps forward, several of which were profiled in a recent Clean Break column.

The second Environmental Hall of Fame ceremony will be held in Chicago beginning tomorrow through Saturday, Nov. 20-22. Among the environmental celebrities to be honored are Pierc Brosnan (James Bond) and his wife, who have been activists in the movement. Two of the New Energy Congress' Global Top 100 Clean Energy Technology companies will also receive awards: Stirling Energy Systems, a concentrated solar technology that heats a highly-efficient Stirling engine, has been in first place in the Top 100 for over a year. Green Power Inc., which is commencing commercial production of a 100 ton per day municipal waste-to-diesel plant, recently rose to 15th place on the Top 100 list.

In the home, these Vampires represent between 5 and 8 percent of a single family home's total electricity use per year, according to the Department of Energy. The problem is multiplied many times over in offices in the US and around the world according to an international study released this week by 1E and the Alliance to Save Energy. The study found nearly half of US workers who use a PC at their job do not typically shut down at night. The 2009 PC Energy Report, which examines workplace PC power consumption in the US, UK and Germany, estimated that US organizations waste $2.8 billion a year to power 108 million unused machines. In 2009, these unused PCs are expected to emit approximately 20 million tons of carbon dioxide, roughly the equivalent impact of 4 million cars.

What better way to save the world than to start in your own back yard? That's what Doug Rempel is doing - one SIP at a time. Doug is currently building an entirely energy efficient home next to Lillooet Lake, in Pemberton, B.C. The home is "off the grid" which means everything, from the solar insulation panels (SIPS) to the architecture of the home - with window levels and patio ledges based on sun path charts - is created to heat and cool in the most natural way possible. There is no hydro power or natural gas. "Energy-efficiency is a career as well as a passion of mine," says Doug.

The QTXE series of ceiling fans by Broan-Nautilus are Energy Star compliant and come with an energy-efficient 42W fluorescent light bulb, and a 4W night light bulb can be installed.

Need energy efficiency system for your home, office or warehouse? Contact Nextek Power Systems for the futuristic energy saving using alternative sources.

As traditional energy sources become increasingly rare and expensive, many homeowners are turning to the skies and learning how to harness energy from the sun. Solar cell technology has been around since the 1950s, but technology has improved considerably and at current levels of efficiency it is worth taking the time and effort to consider a Solar Power Home Now Solar cells are also called photovoltaics, or PV, by the boffins. In basic terms, they are made of semi conducing materials, which, when exposed to the sun go through a distinct process. The solar energy separates the electrons from the atoms within the material and the movement of the electrons creates power, or electricity. Thus light (photons) is converted into electricity (voltage).

HUD-DOE Agreement Will Help Spur a New Industry to Create Jobs for the Middle Class Philadelphia, PA - U.S. Department of Housing and Urban Development (HUD) Secretary Shaun Donovan and U.S. Department of Energy (DOE) Secretary Steven Chu today announced a major partnership between HUD and DOE that will streamline and better coordinate federal weatherization efforts to make it much easier for families to weatherize their homes and spur a new home energy efficiency industry that could create tens of thousands of jobs. Vice President Joe Biden, joined by Secretary Donovan and Secretary Chu, praised the announcement during his remarks at a meeting of the White House Task Force on Middle Class Families in Philadelphia.

The thin film solar field is still a hot bed of activity - Technology Review has a post on a prototype cell that uses photonic crystals - Efficient Thin-Film Solar Cells. Researchers at MIT have unveiled a new type of silicon solar cell that could be much more efficient and cost less than currently used solar cells. Materials science and engineering professor Lionel Kimerling and his colleagues presented results of the first device prototype at a recent meeting of the Materials Research Society in Boston. The design combines a highly effective reflector on the back of a solar cell with an antireflective coating on the front. This helps trap red and near-infrared light, which can be used to make electricity, in the silicon. The research team is licensing similar technology to StarSolar, a startup in Cambridge, MA.

Technology Review has an article on plastic solar cells with "near-perfect internal efficiency" - Pushing Plastic Solar Cells. Plastic solar cells are lightweight, flexible, and, most important, cheap to make. But so far, these devices have been too inefficient to compete with silicon solar cells for most applications. Now researchers from a few institutions claim to have made polymer solar cells with record-breaking efficiencies. These cells still aren't good enough to compete with silicon, but polymer efficiencies have been increasing at a rate of about 1 percent a year. If they can keep this up, say researchers, plastic solar cells will be competing with silicon within a few years.

Officially grid-connected and set to work this week in Germany is a new wind tower from ATS. The novel tower construction allows very high hub heights that may increase a turbine's yield by 20% or more. With its hub height of 133 meters (436 feet), the system has an overall height of 180 meters (590 feet). "This is a great day for wind energy." said Frans Brughuis, Managing Director of the tower construction specialist Advanced Tower Systems (ATS). "Now the pilot project can demonstrate the high cost-effectiveness and efficiency of the ATS concept," The system, one of the largest wind energy systems with hybrid tower in the world, is installed at Germany's Windtest test field at Grevenbroich, near Cologne.

China will put 60,000 new-energy vehicles-including fuel-cell vehicles, hybrid-electric vehicles, and battery-electric vehicles-into trials in 11 cities over the next few years to support the development of a fuel-efficient, alternative-energy auto industry, according to a report in sina.com.

Technology Review has an article on a new system from Ener-G-Rotors which harvests energy from low temperature waste heat - Electricity from Waste Heat. Factories, data centers, power plants--even your clothes dryer--throw off waste heat that could be a useful source of energy. But most existing heat-harvesting technologies are efficient only at temperatures above 150 °C, and much waste heat just isn't that hot. Now Ener-G-Rotors, based in Schenectady, NY, is developing technology that can use heat between 65 and 150 °C.

The Arctic Hotel in Ilulissat, Greenland, is a charming little place on the West Coast, but no one would ever confuse it for a Four Seasons - maybe a One Seasons. But when my wife and I walked back to our room after dinner the other night and turned down our dim hallway, the hall light went on. It was triggered by an energy-saving motion detector. Our toilet even had two different flushing powers depending on - how do I say this delicately - what exactly you're flushing. A two-gear toilet! I've never found any of this at an American hotel. Oh, if only we could be as energy efficient as Greenland!

- Amid mounting agreement that future clean, "carbon-neutral", energy will rely on efficient conversion of the sun's light energy into fuels and electric power, attention is focusing on one of the most ancient groups of organism, the cyanobacteria.

Will Stewart has a guest post up at The Oil Drum on passive solar design techniques - Passive Solar Design Overview - Part 1. Also, at TOD, a post on the Passivhaus standard from another long-time commenter, marjorian - US Housing and the Passive Home Standard. Passive solar refers to the design and placement of a building to enable solar heating without the need for sensors, actuators, and pumps, in contrast to active solar, which utilizes pumps/blowers, sensors, and logic control units to manage collection, storage, and distribution of heat. The two techniques are not exclusive, however, and can work together effectively. As solar radiation (insolation) is a diffuse energy source, and not at the beck and call of a thermostat, passive solar design techniques are at their best when combined with other related methods, such as energy efficiency (insulation, weatherization, building envelope minimization), daylighting, passive cooling, microclimate landscaping, and a conservation lifestyle (i.e., temperature settings, raising and lowering of insulated shades, etc). Most of these topics will be covered in other articles, though passive cooling will be addressed in this series, which is intended as an overview, as a complete engineering treatment on passive solar design would require several dozens of articles.

Demonstration Projects Aim at 15 Percent Reduction of U.S. Peak Load Electricity Demand Washington, DC- U.S. Department of Energy (DOE) Assistant Secretary for Electricity Delivery and Energy Reliability Kevin Kolevar today announced the Department's plans to invest up to $50 million over five years (Fiscal Years 2008 - 2012), subject to appropriations from Congress, in nine demonstration projects competitively selected to increase efficiency in the nation's electricity grid.