Energy Efficiency

Energy Efficiency news, analysis, research, how-to, opinion, and video.

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How green is Amazon’s cloud?

Amazon, Google and Microsoft are under fire for not being transparent about how efficient their cloud platforms are.

Mercedes battery

Mercedes takes on Tesla with its own home and commercial batteries

Mercedes-Benz has unveiled its own brand of energy storage units to enable households and businesses with photovoltaic systems to store surplus power for later use.

Tesla Powerwall

Tesla boosts power output of its home battery, keeps prices the same

During today's annual shareholders meeting, Tesla CEO Elon Musk announced that his company will double the power output of its recently unveiled Powerwall home battery.

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Residential solar installs post largest quarterly growth ever

While commercial and utility installations of solar power underwent a notable decline in the first quarter, residential systems saw an 11% uptick, the largest in history.

hydroelectric power Wanapum Dam

CenturyLink's new data center runs on water

CenturyLink, which runs 55 data centers, today announced the opening of a new data center that gets 85% of its power from a Columbia River dam.

video

Sony's new smart light bulb is also a speaker

The front of the light houses a surprisingly powerful, 2-watt, Bluetooth 3.0 speaker. The bulb can screw into any standard socket and allow it to do double duty as a stereo.

Tesla Energy Powerwall Home Battery

Could Tesla Energy's batteries blow up Elon Musk's company?

Tesla's new home and business battery push requires hundreds of millions of dollars in new investment from a company that’s currently losing money. Could the company's latest venture sink Tesla?

Power vampire

Your house is filled with vampires that suck $165 from your wallet annually

Blame all those devices operating on standby mode even while they’re supposedly “off.” We’ll show you how to put a stake in their hearts.

solar house and panels

MIT says solar power fields with trillions of watts of capacity are on the way

The MIT Energy Initiative wants changes in U.S. government policies to better support a much-needed "massive deployment" of solar in the decades ahead.

Gigafactory

Can Elon Musk's battery really cut your power lines?

During Tesla's home and commercial battery announcement last week, CEO Elon Musk spoke passionately about the viability of supplying all of the world's energy needs with renewable power. All we need are two billion batteries.

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Without Tesla's batteries, the power grid could fail

The power grid was never built for the bidirectional electrical power transfer that distributed renewable energy is enabling. Batteries will reduce peak load demand and improve the overall efficiency of the grid, reducing or...

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Tesla to announce home and utility-scale batteries that offer energy independence

Tesla next week will announce two battery lines, one for households and another for utilities, that will store power from renewable sources, such as solar and wind, supplementing them when the sun goes down or the weather changes.

Apple store solar

Apple's U.S. facilities now get 100% of their power from renewables

In its annual environmental responsibility report, Apple notes that all of its U.S. offices and data centers -- and 87% of its global operations -- now run on renewable energy.

Solar panels being installed

Feds want to add 75K new solar power workers

The U.S. Department of Energy plans to increase its previous goal of training solar power workers, including veterans, by 50%.

Ivanpah Solar Power plant

California leads nation in solar installations as world sees 14% increase

California became the first state this year to receive 5% of its power from utility solar, and while that number may seem small, it's likely an early indicator of growth elsewhere in the U.S.

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China considering space-based solar power station

Chinese scientists say a solar power station in a geosynchronous orbit could supply a constant stream of electricity, avoiding the intermittent issues that come with nighttime back on Earth.

graphenebulb

Researchers say low-cost, longer-life graphene light bulb coming this year

Researchers in the U.K. have created a lightbulb using graphene, a material that's 200 times stronger than steel and a million times thinner than human hair.

SolarCity rooftop panels

SolarCity to build its own power grids

SolarCity, a solar panel installer, is offering to set up mini-power grids that include battery backup, which can be deployed by corporate campuses, military bases and even cities.

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