AUSTIN, Texas — While Tesla's robotaxis and rockets grab headlines, the company's energy business has quietly become one of its most reliable growth engines, and the latest figures show it accelerating rather than slowing. Powerwall recently crossed a striking milestone, preventing an estimated 21.5 million power outages across more than one million deployed units, a testament to how deeply distributed storage has woven itself into everyday life.
A Business Hitting Its Stride
The numbers behind the milestone are substantial. Tesla deployed 46.7 gigawatt-hours of energy storage in 2025, up 49% year over year, while the energy generation and storage segment generated roughly $12.8 billion in revenue, a 26.6% annual increase. Those are not the growth rates of a side project; they are the trajectory of a business scaling into a market that keeps expanding as grids strain under rising demand.
Much of that momentum is now flowing through Tesla's newest hardware. The company has been ramping Megapack 3 alongside its Megablock system, part of a broader push detailed as Megapack 3 ramps into a booming clean-power market. Utility-scale storage has become the workhorse of the segment, smoothing renewable output and giving operators a fast, dispatchable resource that increasingly pencils out on economics alone.
Powerwall Goes Global
On the residential side, Powerwall continues to widen its footprint. Tesla has rolled out Powerwall 3P, a three-phase variant with a native three-phase inverter, into markets like Germany, bringing cost savings and energy security to homes on European grid standards. Record deployments across EMEA, supported by output from Megafactory Shanghai, underscore how Tesla's globally distributed manufacturing keeps feeding demand that has consistently outrun supply.
