Energy efficiency in physics is not measured the way most people think about it. Instead of asking how much heat a process produces per unit of fuel, physicists often compare how much of a substance’s ...

Energy efficiency is a transformative, low-cost solution that can fast-track access to affordable and secure energy and boost economic growth. Amid soaring power demand, driven in part by air ...

Energy-saving light bulbs (C and L) and an incandescent one (R) are seen on December 17, 2008 in Molsheim, eastern France, at French light bulbs firm Osram factory. The European Union (UE) decided to ...

Homeowners can have both energy efficient heating/cooling and savings with the help of an energy analyst. To resolve high energy utilization, homeowners should look into home energy-retrofit projects ...

Renewable energy and efficiency upgrades are saving Kentucky schools millions of dollars amid rising utility rates and ...

Electric HVAC systems can help you keep your home comfortable using a fraction of the energy. We spoke to experts to find out just how efficient they are. Mike De Socio is a CNET contributor who ...

Marco Fellous-Asiani does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations ...

Austrian winters are cold, but in one old Vienna apartment block, most residents never bother to switch on the heating. Energy consumption in the solid, 19 th century building has fallen by 90% since ...

You can update your existing windows to make them more energy efficient or replace them with Energy Star certified options. Some or all of the mortgage lenders featured on our site are advertising ...

Experts say the moves, which would apply to household appliances, will raise energy costs for consumers. By Hiroko Tabuchi and Lisa Friedman The Energy Department said on Monday that it was preparing ...