In 2018 Tesla deployed 1.04 GWh of energy storage systems
Tesla announced results for the energy generation and energy storage business, which in Q4 amounted $371.5 million (up almost 25% year-over-year). It’s just a few percent of total revenues of over $7.2 billion and it will unlikely change in the near-future.
The total deployment of the energy storage system is the past quarter stands at 225 MWh (up 57%), while the solar installations decreased 13% to 73 MW.

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