While solar panels rely on sunshine and wind turbines depend on changing weather conditions, ...

O2 Telefónica has signed a new Power Purchase Agreement (PPA) to procure wind energy in Germany. Under the 15-year deal, renewable energy provider Iberdrola will supply 3,000 GWh of green power to the ...

Tides are predictable years in advance, unlike wind or sunlight. Because of this reliability, harnessing the energy of ocean tides has long appealed to engineers. The difficulty lies in building ...