Green tech finds (3/3/11)

An electric unicycle, iPad recycling, and creating your own bike lane on the go… this week’s green tech finds.

  • California farmers leading the way on renewables: According to the USDA’s new On-Farm Renewable Energy Production Survey, “California farms and ranches now make up more than 20 percent of all operations in the nation with solar, wind and methane digester use.” (via Calfinder’s Residential Solar blog)

  • Harvesting energy from slow tides: That’s the concept behind Minesto UK’s Deep Green technology, a “kite-like device [which] is tethered to the seabed and is steered by a rudder, which allows it to adjust the speed at which water enters the turbine.”  The UK’s Carbon Fund has awarded Minesto £350,000 to test the device.

  • The DIY bike lane: The LightLane concept allows a bicyclist to project his/her own bike lane will traveling in low-light conditions. (via Crisp Green)

  • How to recycle an iPad 1.0: Stoked about the new iPad 2? Ready to trade up? MNN shows you where you can recycle your first-generation iPad.

  • The self-balancing electric unicycle: That’s how makers of the Solowheel describe their product… along with “the smallest, greenest, most convenient People Mover ever invented.” Judge for yourself… check out the video above. (via Earth Techling)

  • Smart water meters a growth industry: You likely associate “smart metering” with electricity, but the concept’s also being applied to water efficiency… and a new report suggests the money is following it. (via Triplepundit)

  • Solar PV + solar thermal = more energy: Chuck Colgan at Cleantechies explains PV-thermal solar technology, which provide greater energy collection for the same space as more traditional photovoltaic arrays.

  • Tiny solar for the developing world: The Firefly, a small-scale solar system tied to a LED light bulb and phone charger, wouldn’t be of much use to most Americans and Europeans… but in the developing world, it could be life-changing technology. (via Environmental Leader)

Hard to imagine you found anything cooler than these stories… but if you did, share it with us!