As part of the climate and weather, wind is always blowing somewhere. It can be harnessed for energy.
The force of the wind can be transformed into electricity, providing a reliable source of renewable energy - when the sun isn't shining. But development of wind power faces many challenges, least among them the size of required infrastructure.
Invenergy has filed lawsuits against Polish energy giant Tauron for $325 million. The case is a test not only for Poland's relationship with foreign investors but also Trump's 'America First' stance as he visits Warsaw.
Dutch trains now run on renewable energy. The national railway company Nederlandse Spoorwegen (NS) set out to have all of its electric trains running on wind-generated electricity by 2018, but the goal was met one year earlier. And the train company’s CEO had a unique way of sharing the news. DW talks to NS spokesperson Ton Boon.
The world is in the middle of a renewable energy revolution. Prices for clean energy systems are plummeting and investments in renewables are reaching record highs. But there's still a major hurdle to the large-scale adoption of green power around the world. The batteries needed to store the intermittent energy from renewables – such as solar and wind – are still too costly.