Compressed hydrogen is “the first viable option” to help meet wintertime electricity demand in a high-renewables grid, says DNV GL.

Former surface mines in central Appalachia could be re-purposed for solar. Environmental group The Nature Conservancy is exploring the options.

With openings in the fence and improved growth of plants vital for tortoise survival, solar farms in Nevada can provide better habitat than the surrounding desert. First Solar has found similar habitat gains in California.

To get long-duration storage costs down to $0.05/kWh, research teams funded by ARPA-E are pursuing breakthroughs in flow batteries, hydrogen storage and other technologies – even thermovoltaics.

Google pre-qualified bidders and used reverse auctions to obtain the lowest price for renewable energy. Reverse auctions for corporate purchases could potentially benefit solar developers, if their transparency and simplicity can influence more corporations to procure green power.

This has been a breakthrough year for non-battery storage, with key advances in pumped hydro, power-to-gas, and thermal storage technologies. Many industry players are moving beyond pilot projects to contracted projects, which could lead to increased scale and lower costs.

The energy services firm will use software from California’s AutoGrid to develop a VPP which will draw on PV generation, energy storage and demand response technology. ENERES wants businesses to come on board and burnish their renewables credentials.

Pumped hydro storage is highly cost competitive for large-scale energy storage, according to a report published by the San Diego County Water Authority. The report models a pumped hydro project as securing better financing terms than battery storage.

Former NREL employee pens paper to rebut claims conventional energy can supply the essential grid services needed to return to normality after network disruption. The author says claims renewable energy cannot provide such services are erroneous.

Japan’s JGC Corporation reports an efficient method of converting hydrogen to ammonia, which can later be combusted to generate carbon-free electricity. Ammonia, according to JGC, has various advantages over hydrogen in terms of safety and cost effectiveness.