Lunar Energy's new 25 kW home DC fast charger plugs into its Lunar System battery, supports CCS and NACS, and lets a compatible EV back up your home. Specs, availability, what's missing and how it compares to Ford, GM, Tesla and Wallbox.
Photo: Lunar Energy
Nearly every home EV charger in America is an AC charger, and that puts a ceiling on how fast your car can fill up in the garage. Lunar Energy, the home-battery company founded by Tesla's former head of energy, Kunal Girotra, says it has found a way around that ceiling, and a way to send the car's power back into the house.
On November 11, the Mountain View, California, company announced the Lunar Fast Charger, a 25-kilowatt home DC fast charger that plugs into its next-generation Lunar System home battery. Lunar says it adds up to 100 miles of range in an hour and supports two-way charging, so a compatible EV can power the home in a blackout or, eventually, sell energy to the grid. The catch: it won't arrive until later in 2027, and Lunar hasn't announced a price or which cars will work with it.
A normal Level 2 wall charger sends AC power to the car, and the car's onboard charger converts it to DC for the battery. That onboard charger is the bottleneck. As Heatmap noted in its coverage, most U.S. EVs can accept only about 11 kW of AC power at home, no matter how big the wall unit is. (For the basics, see our guide to Level 1, Level 2 and DC fast charging.)
A DC charger skips the onboard charger and feeds the battery directly, the way a public fast charger does. Lunar can do this cheaply because its home system already runs on a DC bus: solar panels, batteries and now the car all share it. Lunar's spec sheet lists a DC input of 380 to 460 volts from the Lunar System and an output to the car of 0 to 60 amps, within a 200 to 500 volt range under the ISO 15118 standard.
Twenty-five kilowatts is slow next to a 250 kW public station, but it is more than twice what most home chargers deliver. Lunar says it is "more than twice as fast as a standard home charger." Heatmap reported a typical charge would take roughly three to four hours, compared with six to eight hours on a Level 2 unit.
| Spec | Lunar Fast Charger |
|---|---|
| Charging power | 25 kW continuous, DC |
| Range added | Up to 100 miles per hour (Lunar estimate) |
| Connectors | CCS1/CCS2 and NACS |
| Output current | 0 to 60 A DC continuous |
| Output voltage | 200 to 500 V DC (ISO 15118) |
| Bidirectional | Yes: vehicle-to-home (V2H) and vehicle-to-grid (V2G) |
| Requires | Lunar System home battery |
| Panel upgrade | Not needed, per Lunar (connects to the Lunar System, not the main panel) |
| Availability | Initial rollout later in 2027 |
| Price / compatible EVs | Not announced |
The bigger story is two-way power. An EV battery typically holds several times the energy of a home battery tower, and Lunar wants to put it to work. Lunar's press release says bidirectional charging lets the car "keep a home running through a multi-day blackout," depending on the size of the car's battery and how much power the house uses. It also says vehicle-to-grid could earn owners money as utility programs develop. Lunar's Gridshare software already manages more than 150,000 devices in virtual power plants, including programs in California, Hawaii and Texas, according to Electrek.
The charger also works with Lunar AI, the company's scheduling software. It "dynamically balances rooftop solar, stored battery energy, and off-peak utility rates" to charge the car at the lowest cost, per the release. Sam Wevers, Lunar's director of product, said: "Automating fast charging and discharging with solar, storage and cheap grid power can dramatically reduce the cost to power your drive."
"Automating fast charging and discharging with solar, storage and cheap grid power can dramatically reduce the cost to power your drive."
Sam Wevers, Director of Product, Lunar EnergyThe charger is an add-on to Lunar's updated home battery, which arrives first, with customer installations starting in early 2027.
Several automakers already let an EV back up a house, but most route power through AC hardware that only works with their own vehicles.
| System | Type | Charging | Home backup | Vehicles |
|---|---|---|---|---|
| Lunar Fast Charger | DC | 25 kW | Yes (output not stated) | Not announced (CCS/NACS) |
| Ford Charge Station Pro + Home Integration System | AC | 19.2 kW (80 A) | Up to 9.6 kW | F-150 Lightning |
| GM Energy PowerShift Charger + V2H Enablement Kit | AC | 19.2 kW (80 A) | Yes | V2H-capable GM EVs, from Lyriq to Silverado EV |
| Tesla Powershare + Powerwall 3 | Vehicle inverter | Wall Connector | 11.52 kW max continuous | Cybertruck; new Model 3 and Model Y ordered from Oct. 1, 2026 |
| Wallbox Quasar 2 | DC | 12.8 kW | Up to 12.8 kW | Kia EV9 |
Ford's Home Integration System listed at $3,895 plus installation when it launched in 2022, on top of the $1,310 Charge Station Pro for trucks that didn't include it. GM doesn't list a base price on its PowerShift page, and Wallbox takes a $100 deposit for the Quasar 2. Tesla's Model 3 and Model Y Powershare is U.S.-only and does not yet support selling power to the grid.
The bottom line: Lunar's Fast Charger brings 25 kW DC charging into the garage, more than double a typical home charger, and promises to turn a parked EV into a house battery. It is one of the few home DC chargers aimed at mainstream buyers, and it supports both CCS and NACS. But it is tied to Lunar's own battery system, it won't ship until later in 2027, and the two numbers that matter most, price and compatible cars, are still missing. Until those arrive, treat it as a promising preview, not a purchase decision.
Related: Level 1 vs. Level 2 vs. DC fast charging explained · How much does it cost to charge an EV?
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