Tesla Energy
Solar generation and storage for homes and the grid.
Tesla Energy designs solar generation and battery storage hardware for residential, commercial, and utility-scale customers. Powerwall backs up homes during outages and shifts usage to off-peak hours, while Megapack deploys at grid scale to firm up renewable output and stabilize regional power networks.
- Valuation
- -
- Change
- +2.7%
- Founded
- 2015
- Headquarters
- Austin, TX
- Employees
- -
About Tesla Energy
Tesla Energy applies the same battery and manufacturing expertise built for the vehicle lineup to stationary storage. Powerwall backs up a single home and shifts its usage to off-peak hours; Megapack does the same job at grid scale, arriving pre-assembled so a utility-scale storage site goes from delivery to grid-connected in weeks rather than years.
Solar Roof closes the loop for residential customers by replacing the roof itself with power-generating tiles, rather than adding panels on top of an existing roof - paired with Powerwall, a home can ride out a multi-day outage on stored sunlight alone.
Store renewable energy at every scale, from a single garage to a regional grid.
How it got here
- 2015
Powerwall unveiled
Introduced home battery backup as a consumer product rather than an industrial or off-grid niche.
- 2016
SolarCity acquired
Brought solar generation in-house, eventually leading to the integrated Solar Roof product.
- 2017
Megapack unveiled
Extended the same battery expertise to utility-scale grid storage, arriving pre-assembled rather than built on-site.
- 2021
First major grid-scale deployments
Multi-hundred-megawatt Megapack installations began firming renewable output for regional grid operators.
- 2026
40+ GWh deployed annualized
Combined Powerwall and Megapack deployments now firm a meaningful share of renewable capacity on served grids.
Core pillars
Instant home backup
Powerwall detects an outage and switches a home off-grid in under a second, with no generator or manual transfer switch.
Grid-scale firming
Fleets of Megapacks smooth solar and wind output and absorb demand spikes that would otherwise require a fossil peaker plant.
Integrated solar + storage
Solar Roof and Powerwall are designed to work together from the start, not bolted on as separate systems.
Virtual power plants
Networked home batteries can be aggregated and dispatched together, acting as a distributed grid resource during peak demand.
Facilities
Megapack Factory
Dedicated Megapack production line, building each unit as a single pre-assembled enclosure ready for site installation.
Solar Roof Production
Solar Roof tile manufacturing, producing both active and inactive tiles designed to sit flush with each other.
Scale
How it's kept safe
- Each Megapack unit isolates and manages its own thermal events independently, without taking the rest of a site offline.
- Powerwall and Megapack both carry UL certification for residential and utility-scale deployment respectively.
- Solar Roof tiles carry a Class 4 hail rating and are rated for winds up to 166 mph.
Environmental note
Grid-scale storage lets utilities lean harder on solar and wind by smoothing their variability, reducing reliance on fossil peaker plants that would otherwise cover demand spikes.
Frequently asked
How many Powerwalls does a home need?+
It depends on the home's usage and backup goals - one unit typically covers essential circuits, while whole-home backup usually calls for two or more stacked units.
Is Megapack sold retail?+
Megapack is priced per unit with configuration options for capacity and site integration - see the product listing below for current pricing.
How long does Solar Roof installation take?+
Typical installation runs 5–7 days depending on roof size and complexity.
Can I bundle Solar Roof with Powerwall?+
Yes - the Solar Roof configurator includes an option to bundle a Powerwall at a combined price.
