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Tesla Energy deploys 13.7 GWh in Q3: growth continues, but slower than hoped1:09

Tesla Energy deploys 13.7 GWh in Q3: growth continues, but slower than hoped

Energy · October 3, 2026

Tesla's battery storage business grew almost 10% from a year ago, yet missed analyst expectations by more than 2 GWh. Here is what is behind the numbers.

While the car numbers beat expectations, Tesla's energy business fell short. Tesla deployed 13.7 GWh of energy storage in the third quarter of 2026, the company reported alongside its vehicle deliveries on October 2.

The numbers in context

  • Q3 2026: 13.7 GWh.
  • Q3 2025: 12.5 GWh, so growth of 9.6% year over year.
  • Q2 2026: 13.5 GWh, so slightly up from the previous quarter.
  • Record: 14.2 GWh in Q4 2025.
  • Analyst expectation: about 15.9 GWh.

Why a miss is not a disaster

Energy storage deployments are lumpy. They depend on when large grid projects are finished and handed over, which can shift a quarter's numbers by gigawatt-hours. A 'miss' can mean projects slipped by a few weeks rather than demand disappearing.

The order side looks healthy. In September alone, Tesla announced a 3 GWh Megapack supply deal in Italy, on top of earlier multi-gigawatt-hour contracts in the UK, Italy and Australia. Megapack 3, the newest version, recently entered production in Texas.

Why it matters for Tesla

Energy storage has become one of Tesla's steadier businesses at a time when car sales are flat. Investors watch it closely because battery storage for power grids is growing worldwide and usually comes with better margins than selling cars.

What to watch

On October 21, Tesla's earnings report will show the revenue and profit of the energy business. If margins hold up, a quarter of slower deployments will matter less than the pipeline of contracts behind it.

This article is for information only and is not financial advice.

Sources

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