The World's Greenest Battery

Energy Storage Landscape 2021

Sarah Keeley


Introducing the first edition of our Energy Storage Landscape – a useful resource to help you stay up to date on all the latest entrants and innovations in the energy storage industry.

Valued at $59 billion globally in 2019 with a combined energy storage deployment of 164 GWh, the International Energy Association (IEA) estimates that the world will need approximately 266 GW of energy storage by 2030. Bloomberg New Energy Finance predicts that the global energy storage market will experience prolonged rapid growth to a cumulative 942 GW by 2040 representing an investment of $662 billion.

Existing capacity in stationary energy storage is dominated by pumped-storage hydropower. However, a number of energy storage technologies exist with hundreds of companies in each category, all with their own unique advantages.

The Energy Storage Landscape has been divided into the following technology categories:

– Lithium-ion
– Compressed air energy storage (CAES)
– Flywheel 
– Hydrogen
– Gravitational 
– Flow battery
– Lead acid
– Thermal

We will be updating this resource regularly so be sure to check out our 2022 edition soon! Any companies we missed that should be included? Let us know! Comment below or drop an email to

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