Organic flow battery could transform renewable energy storage

The Harvard approach utilizes the electrochemistry of quinones, organic molecules that are similar to molecules that store energy in plants and animals and are plentiful in crude oil and green plants. Using these naturally abundant and inexpensive organic molecules, the researchers have developed a metal-free flow battery that already performs as well as vanadium flow batteries, while using significantly less expensive chemicals and no precious metals.

MIT’s flow battery could store solar and wind power on the cheap

Previous membraneless systems have been largely unpractical, but the scaled-up version of the device could have a substantial real-word impact because it could be used to produce energy for a very competitive US$100 per kilowatt-hour. “Most systems are easily an order of magnitude higher, and no one’s ever built anything at that price,” says William Braff, who was part of the research team.

Coming To Your Home: A Battery The Size Of A Fridge – Forbes

Imergy is targeting more than just India and the off-grid market. It’s co-designing systems with Flextronics to introduce a 5-kilowatt (30 kilowatt-hour) system for the industrial and residential market in the second quarter of 2014. The 5-kilowatt system would be the size of a fridge.

Do high-end graphics cards raise your electricity bill by much? – Super User

Keep in mind that a 450W PSU does not draw 450 watts of power.

Your computer only draws as much power as required for its operation. As a matter of fact, the highest demand for power is when you first turn on your PC to spin up all the hard drives, DVD/CD drives, fans, etc. The increased capacity PSU has to handle that load which can be several times the power demands of a steady-running PC.

via Do high-end graphics cards raise your electricity bill by much? – Super User.

How to measure your electrical use: Electric Meter and Watt-Hour Meter methods

Buy a cheap, simple watt-hour meter

A watt-hour meter is a little device that tells you how much electricity something uses, either at a given moment or over an extended period of time. Just plug the device into the meter, plug the meter into the wall, and read the display. I like the $25 Kill-A-Watt (pictured at right) sold  through SmartHome. Just plug it in and see how many watts a device is drawing at any given moment, or how many kWh you’ve used since you turned it on. This is especially useful for finding the amount of kWh used in a month for devices that don’t run constantly, like refrigerators and window unit air conditioners.

via How to measure your electrical use: Electric Meter and Watt-Hour Meter methods.