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Power

Competitive cyclists like to track their power output, and many use a power meter in order to do so. Those meters mostly take the form of a device that's either added to or built into one crank arm, and they can cost anywhere from around US$1,000 to over $2,000. The Limits power meter, however, simply goes between the pedal and crank of any bike, and is planned to cost less than $400. Read More
At Stanford University in California, it’s normally the Nobel-winning researchers who make the news. But with the commissioning of a novel renewable energy system, the campus’s humble heating and cooling system has grabbed some headlines. Using a first-of-its-kind heat recovery system, and drawing a substantial percentage of its electricity from solar, the university is greening up its operations in a move that will see greenhouse gas emissions cut by 68 percent and fossil fuel use cut by 65 percent. Read More
Almost everyone has a device that needs to be charged. Whether it's a phone, tablet, or otherwise, the need for USB power is always looming. A new device called the Couchlet aims to take put USB power in the places where people spend a lot of time – their furniture. Read More
A successful ground test of a system designed to ultimately collect solar power from orbit and beam it back down to Earth was announced in Japan this week by Mitsubishi Heavy Industries. The wireless power demonstration saw 10 kilowatts sent over microwaves from a transmitting unit to a receiver 500 meters (1,640 ft) away. Read More

BioLite is expanding its line of off-grid gadgets with the recently-unveiled NanoGrid, a combined lighting and power storage system that helps keep your camp illuminated and charges your USB-powered devices, too. Read More

A study by IBM researchers has revealed that many discarded laptop batteries have the potential to provide enough power to keep the lights running in homes in poorer countries around the world. The India-based team conducted a small study to test the viability of the idea, with work now focused on streamlining a prototype system. Read More
Generally speaking, the peculiar appearance of wind turbines coupled with the fact they perform better when up high and out in the open sees them banished to uninhabited countryside, or even out to sea. But a French entrepreneur believes that sculpting them in the form of an artificial tree could lead to wider adoption in urban centers, making use of low winds that circulate around buildings and streets. Read More
Back in 2012, Gizmag looked at LiquidPiston’s X2 rotary engine. The compact, low-vibration, high-efficiency 70 bhp and 40 bhp compression ignition engine was something of a sensation. Now the company is back with the 70 cc X Mini engine, which LiquidPiston’s President and Co-Founder, Dr Alexander Shkolnik unveiled on Wednesday at the SAE International/JSAE 2014 Small Engine Technology Conference in Pisa, Italy. Read More
Fusion reactors are a bit like buses; you wait forever for one, then two come along at once. No sooner does the University of Washington announce that it’s working on a breakthrough compact fusion reactor (CFR) than Lockheed Martin says that its Revolutionary Technology Programs unit, AKA the Skunk Works, in Palmdale, California has one that could be ready for market within ten years. Read More
Kinetic chargers have been around for a few years, but have typically been big and bulky. Ampy is much smaller and fashionable enough to wear around. Read More
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