Germany is embarking on an innovative project to turn a hard coal mine into a giant battery that can store surplus solar and wind energy and release it when supplies are lean. The Prosper-Haniel coal mine in the German state of North-Rhine Westphalia will be converted into a 200 megawatt pumped-storage hydroelectric reservoir that acts like a giant battery. The capacity is enough to power more than 400,000 homes, Governor Hannelore Kraft said, according to
Germany converts coal mine into giant battery storage for surplus solar power
More of Today's Solutions
A 58-day protest campaign just convinced Etsy to ban fur
BY THE OPTIMIST DAILY EDITORIAL TEAM The Coalition to Abolish the Fur Trade did not simply write a letter. For 58 days, CAFT ran ...
Read MoreWhy your wandering mind is exactly what meditation is for
BY THE OPTIMIST DAILY EDITORIAL TEAM Most people who try meditation for the first time expect their mind to go quiet. Instead, it does ...
Read MoreFive steps for making your clothes last as long as possible
The clothes we wear can make us feel confident and help us express our inner selves. Unfortunately, our culture of fast fashion produces these ...
Read MoreHere’s why grapes are good for your gut
The health benefits of grapes Grapes are the perfect, portable healthy snack to eat. Enclosed in their bite-size shells, they are a widely popular ...
Read More
