This winter the city of Washington is looking into two energy efficiency projects that could have big savings. The first project involves a program sponsored by Ameren Missouri.

A new app developed by San Diego State University computer engineering professor Yusuf Ozturk makes it easy to know the best time to plug in.

Power bills make the biggest part of our monthly expenses. During the summer season it is air conditioner and air cooler Singapore depends on and in winter, the heaters and thermostats.

Construction of the world’s largest tidal energy plant looks set to begin next month in Scotland, after the project’s majority owners – the Australian-founded and managed company, Atlantis Resources – got the go-ahead to start drawing on government grant money.

The recently revamped government Green Deal has been an encouraging step forward which will offer free cash for homeowners in need of double glazing or wall and loft insulation.

The U.S. Environmental Protection Agency launched our Energy Star Home Advisor – an online tool to help consumers save money and improve their homes’ energy efficiency through recommended home-improvement projects.

Crews are setting foundations, erecting racks and installing solar panels in a wave of activity at the Silt Water Treatment Plant. The 234-kilowatt solar array is slated to be in service and powering the plant by Dec. 31, according to Katharine Rushton, commercial sales associate for Sunsense Solar.

VCA also says that the project combines Passivhaus principles with renewable energy technologies to reduce energy usage by 50 percent.

According to Dodgingtown’s Green Committee Chairman Kirk Blanchard, following a successful and economically advantageous changeover from an oil- to gas-fired boiler, Chief Steve Murphy charged the committee with upgrading electrical lighting fixtures and bulbs to achieve even more energy savings.

A combination of highly efficient LEDs and a digital control system from Open Technology has achieved 85% energy savings on lighting.

Right now, solar power only comprises 0.23 percent of America’s electricity generation. But that percentage has the potential to skyrocket to 10 percent in the next 30 years, according to a report released Thursday by Environment America Research & Policy Center.

Most of the money in commercial and residential goes to energy-efficiency upgrades, but about a quarter of commercial projects are renewable energy projects.

The aircraft, a heavily modified microlight, uses a conventional four-stroke petrol engine as its main power source and an electric motor connected to a bank of 16 large lithium-polymer batteries built into the wings.

The 40-seat "Bio-Bus" runs on biomethane gas generated through the treatment of sewage and food waste. The eco-friendly vehicle can travel up to 300km (186 miles) on one tank of gas, which takes the annual waste of about five people to produce.

More than 23,000 energy efficiency measures have been installed in rural homes in the UK in the last six months. That’s an almost 3000% increase between April and September this year, according to new statistics from DECC.

Pursuing energy efficient ways will help reduce electricity consumption and save as much as Rs 50,000 crore, according to Power Minister Piyush Goyal.

Lincoln-Sudbury Regional High School kicked off its SEED program with a powerful all-school presentation by Alliance for Climate Education. The ACE Assembly was a natural lead-in for recruiting students to the SEED program, which promotes greenhouse-gas-reducing efficiency upgrades in their community.

At Money Dashboard we're all for finding new ways to help you save money – and if they help out the environment too that can only be a good thing. Here are a few of the best energy-saving tips that won't cost you a penny.

Lithium ion batteries power everything these days from smartphones to electric cars. They’ve been a great advance in portable power storage. On the downside, their spread also makes a big contribution to electronic waste dumps often found in developing countries.

No one, not even the world’s largest coal-mining company, will escape from the impending solar energy revolution in India. The Indian government-owned company has announced its latest initiative to expand solar power infrastructure.

Many of us are guilty of making token gestures toward saving energy but a lot of us aren't even getting these efforts right.

The new displays ditch the electrodes, simultaneously making the screen thinner and decreasing its energy requirements.

Solar energy in the United States is becoming a major part of the nation's power sector as installation costs decline, Energy Secretary Ernest Moniz said.

And she practices what she takes care not publicly to preach. Famous for going round the Palace, switching off the lights, she was quick to move over to the often unpopular energy-saving light bulbs.

Building-integrated solar photovoltaic modules are fast catching up in the rapidly evolving construction business where emphasis on energy efficiency and self-reliance are becoming increasingly popular.

It’s been dubbed by its makers an Uber for energy experts – a reference to the app which revolutionised the way people order taxis.