Energy · 2017

Grid-scale battery storage

A 100 MW battery in South Australia stabilizes the grid in milliseconds.

Tesla and Neoen's Hornsdale Power Reserve, built in under 100 days in 2017, showed batteries could provide fast frequency support and cut grid costs. Global grid battery capacity grew past 100 GW by 2024, shifting midday solar into the evening.

See it in the living tree Wikipedia

Arcs above join it to what it stood on, arcs below to what it led to. The bar places this stretch on the tree's whole timeline.

What it built on 3

What it led to 1

Cheap long-duration grid storage ~2032

Watch

Hornsdale Power Reserve grows 50% largerAustralian Renewable Energy Agency (ARENA) · YouTube

Related measurements

The dashed line marks when it first worked.

Lithium-ion battery cell price Latest: 78 $/kWh (2024 USD) (2024) Source: Our World in Data

World lithium production Latest: 292k tonnes (2025) Source: Our World in Data

Share of electricity from low-carbon sources Latest: 42.6 % (2025) Source: Our World in Data