The train goes up, the train goes down: a simple new way to store energy 1. The train carries big rocks uphill, consuming electricity. 2. Then the train carries big rocks downhill, generating electricity. 3. That's it. The energy stored by going uphill is released by going downhill.
New graphene solar panels turn rain into clean energy
Solar power has the potential to generate about 40 percent of America’s energy, yet the technology still has limitations. One is weather. Clouds and rain diminish solar cell efficiency, a problem for places that are more overcast than sunny. But new research could change that. A team of four Chinese scientists from Yunnan Normal University and the Ocean University of China recently discovered how applying graphene to solar panels turns rain into clean energy.
Solar energy facts: Solar energy refers to energy from the sun. It is the most important source of energy for life forms. It is a renewable source of energy unlike non- renewable sources such as fossil fuels.