When it comes to renewables, the big question is: How do we store all that electricity for use afterwards on? Due to the fact such electricity is intermittent in nature, storing it when there is a surplus is critical to guaranteeing a continuous supply—for rainy days (literally), at night time, or when the wind doesn’t blow.

Applying today’s lithium-ion batteries for very long-expression grid storage isn’t possible for a quantity of motives. For illustration, they have mounted charge capacities and really do not maintain charge perfectly above extended periods of time. 

The option, some suggest, is to store electricity chemically—in the kind of hydrogen fuel—rather than electrically. This entails applying equipment identified as electrolyzers that make use of renewable electricity to break up drinking water into hydrogen and oxygen gas.