Renewable Energy

A Dutch startup spun out of the Delft University of Technology has launched the Kitepower Hawk, a wind energy storage solution that's designed to replace diesel generators for small island communities, on construction sites or in agriculture.

With most of Arizona in a state of moderate to extreme drought, the Gila River Indian Community and the US Army Corps of Engineers have signed a deal to begin a solar-over-canal project designed to cut down evaporation and boost solar efficiency.

Gulfstream Aerospace has flown into history as one of its G600 aircraft completed the world's first transatlantic flight burning 100% Sustainable Aviation Fuel (SAF) from Savannah, Georgia, to Farnborough, England, in six hours and 56 minutes.

In an average day, tropical oceans absorb about 278 petawatt-hours of solar energy. Harvesting just 1/4000th of that energy would supply the entire world's daily electricity – and ocean thermal energy conversion provides a possible method.

It looks nothing like a typical "fan on a stick" wind turbine, but this oval track with evenly spaced wing blades could be an enormously disruptive addition to the renewable energy mix, since it slashes the cost of wind power to unprecedented lows.

A wildly innovative turbine that could halve the cost of offshore wind is set to go into testing in Norway. The 19-m (62-ft), 30-kW, contra-rotating vertical-axis turbine is a prototype of a design that could scale to unprecedented size and power.

For the second consecutive time, a team from Belgium has landed in first place in the Bridgestone World Solar Challenge, a competition that sees dozens of innovative solar vehicles race across the often punishing continent of Australia.

Imagine something as tall as New York's Chrysler building, but spinning. China's Mingyang Smart Energy has announced plans for a colossal 22-megawatt offshore wind turbine, and standing in its presence will be an unprecedented human experience.

Sage Geosystems has pioneered a new form of cheap energy storage that uses the Earth as a giant bellows, pumping water into underground fractures, then letting it squirt back up at 70% efficiency – or 200% efficiency if you also harvest heat energy.

We haven't seen a floating offshore wind turbine like this before. Touchwind claims its innovative single-blade turbines will solve several problems to drive down cost and downtime, using a single, huge blade with no fancy active pitch controls.

Bill Gates-backed startup Antora Energy is preparing to roll out a containerized, modular heat battery, designed to store renewable energy at the lowest possible cost – then release it efficiently as electricity or industrial process heat.

Three Gorges Energy has connected the world's first 16-megawatt monster offshore wind turbine to the power grid. With a mind-boggling 260-meter (853-ft) rotor diameter, this towering colossus will supply clean energy for about 36,000 Chinese homes.