Which projects are planned for pumped storage

What is pumped storage hydropower (PSH)?

Pumped Storage Hydropower (PSH) is the largest form of renewable energy storage, with nearly 200 GW installed capacity providing more than 90% of all long duration energy storage across the world with over 400 projects in operation. The guidance note delivers recommendations to reduce risks and enhance certainty in project development and delivery.

How many pumped storage plants are there?

There are 43 PSH projects in the U.S.1 providing 22,878 megawatts (MW) of storage capacity2. Individual unit capacities at these projects range from 4.2 to 462 MW. Globally, there are approximately 270 pumped storage plants, representing a combined generating capacity of 161,000 (MW)3.

How does a pumped storage hydropower project work?

Pumped storage hydropower projects use electricity to store potential energy by moving water between an upper and lower reservoir. Using electricity from the grid to pump water from a lower elevation, PSH creates potential energy in the form of water stored at an upper elevation, which is why it is often referred to as a “water battery”.

What is a pumped storage facility?

Pumped storage facilities are built to push water from a lower reservoir uphill to an elevated reservoir during times of surplus electricity. In pumping mode, electric energy is converted to potential energy and stored in the form of water at an upper elevation, which is why it is sometimes called a “water battery”.

What is the pumped storage tool?

The tool is the most comprehensive and up-to-date online resource tracking the world's water batteries. The tool shows the status of a pumped storage project, it's installed generating and pumping capacity, and its actual or planned date of commissioning. Learn more about pumped storage hydropower.

How will pumped storage work in 2021?

In 2021, China released an ambitious plan to roll out pumped storage nationwide in an effort to reduce reliance on fossil fuels. China’s momentum has allowed it to surpass Europe’s capacity for pumped storage. Systems are also being built in the United States, where legislation has spurred renewable energy projects.