As we enter the final month of the presidential election campaign, the political rhetoric remains heated. Among the many issues to be debated, renewable energies and the federal policies that support them will no doubt feature prominently.
More than 8 billion lamps illuminate the United States, accounting for nearly 20 percent of all electricity consumption in the nation, according to a study released by the Department of Energy (DOE). The “2010 U.S.
The ongoing quest for more efficient, greener power seems to touch on almost every aspect of modern life, including cars, home electricity, manufacturing and building construction. Even lighting has come under scrutiny. In that regard, a recent report by the U.S.
One of renewable energy sources’ biggest challenges is the intermittency of power generation. Finding a way to store power for later use helps make renewables more practical for tying into the grid where demand does not always coincide with the wind or the rising sun.
Lighting continues to be a huge chunk of a building’s annual energy costs—between 20 and 40 percent. While the need for light will never go away, analyzing its costs through energy modeling can help secure the installation of more efficient technologies.
Is it possible that some T5 lighting fixtures are perfectly efficient? One might get that idea based on some efficiency ratings of 98–100 percent, although it might not seem possible. Such a rating must be a mistake, right? But it’s not.
The United States is making the greatest push in its history to use renewable energy. However, thus far, one of the biggest obstacles for implementing renewables has been the United States’ exorbitant energy demand, which accounts for 26 percent of the world’s energy consumption.
The commercial construction market, in general, remains anemic, with one exception: data centers. Not only are we all buying more data-transmitting smart-phones, tablets, web-connected televisions—and, yes, even PCs—we also are moving data from our own hard drives to remote “cloud” servers.
After engineer David Kaneda’s firm moved into its own self-designed zero-energy building, an analysis of the zero-energy claim revealed that their photocopiers, printers, clock radios and coffee pots were threatening efforts to make the building self-sustaining.
Energy efficiency is often the ugly stepsister in alternative-energy conversations because quantifying its potential effect is difficult; how do we determine the real value of all those avoided kilowatt-hours?
On the May 14, 2012, Washington, D.C., Mayor Vincent Gray joined officials from the District Departments of Transportation (DDOT) and Environment (DDOE) to replace the last of approximately 1,360 alleyway lights with new energy-efficient light-emitting diode (LED) lamps.
Like all renewables, photovoltaics (PVs) are in a constant state of innovation. Researchers are forever striving for breakthroughs in materials and productivity to help them lower costs and chip away at the historical advantage enjoyed by fossil fuels in mainstream energy markets.
Within the larger effort to transform the way the nation receives and uses its power, efficiency holds first-tier status, right next to solar, wind and electric cars. The importance of building energy use within the realm of efficiency also is well-established.
The second step in the energy services project delivery process is normally thought to be an energy audit; it is the cornerstone of energy service. While it is a key component, an energy audit is only one form of assessment.