Energy Storage · 7 min read · Energy Atlas Editorial
Pumped-Storage Hydropower
Two reservoirs and a reversible plant make the largest form of grid electricity storage in many countries.
- storage
- hydro
When electricity is cheap, motors pump water uphill. When it is valuable, water generates. Geography needs two basins and a height difference. Round-trip efficiency is high among bulk storage options, though not 100 percent.
Keep reading
Articles
Why Energy Storage Matters
Electricity is consumed as it is made unless something stores it. Storage technologies differ by duration and efficiency.
8 min read
Hydropower
Falling or flowing water turns turbines. It is the oldest large-scale renewable electricity source still expanding in some regions.
8 min read
Questions
Why can’t electricity simply be stored everywhere?
Electricity is a flow. Storing it means converting it into another form and back, with losses and cost.