Power and Light · Roam Energy
RoamEnergy PowerBridge Pro (Gen 2)
The car as a generator: 7,500 W at 240 V from the EV's charge port
Big ticket
Why it's on my list
In the home backup system page this is why an EV belongs on a solar house: plug it into the charge port and the 100 kWh pack becomes about four days of the essentials on ordinary outlets, cord and plug, no wiring. Check the maker's compatibility list first; older Teslas may need the CCS retrofit.
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What it is
Plugs into a CCS-equipped EV's charge port and turns the pack into a generator: up to 7,500 W of AC at 240 V, 3,500 W at 120 V, NEMA 14-50 outlet. No fuel, no fumes, no engine, no wiring. The box in the home backup page that turns a 100 kWh car into about four days of essentials.
What it is
The box that turns an electric car's battery into a generator: 7,500 W at 240 V from the charge port
My home backup power system page is why an EV belongs on a solar house: the car is the biggest battery most people will ever own, and this is the cord that lets the house use it. It plugs into a CCS-equipped charge port and puts out AC on ordinary outlets, no fuel, no fumes, no engine and no wiring. A 100 kWh pack becomes about four days of the essentials. Check the maker's compatibility list first; older Teslas may need the CCS retrofit.
What it does
The EV's pack, out through a NEMA 14-50
Why it matters
A generator needs fuel you have to store and rotate, and it runs loud for as long as the outage lasts. The car's pack is already full, already in the garage, and silent. The Pro's 240 V output is what runs the well pump, the dryer or a mini-split through a transfer switch; at 120 V it covers the fridge, the freezer, the furnace blower and the lights on cord and plug. Where a portable station stops, which is on my portable solar guide, is where this starts.
The numbers
- Plugs into a CCS-equipped EV charge port
- Up to 7,500 W of AC at 240 V, 3,500 W at 120 V
- NEMA 14-50 outlet
- No fuel, no fumes, no engine, no wiring
Before you buy
Compatibility, and the transfer switch
Why it matters
Two checks. First, the car: the maker publishes a compatibility list, and older Teslas may need the CCS retrofit before the port will talk to it. Second, the house: 240 V into the panel goes through a transfer switch or an interlocked breaker, never a cord into a wall outlet, which pushes power back up the line toward a crew working on it. The wired side of that is on the home backup page.
The checks
- Check the compatibility list for your car
- Older Teslas: the CCS retrofit
- 240 V loads: a transfer switch or interlock, wired by an electrician
- 120 V loads: cord and plug, straight from the outlet
The big batteries on my list
Where it earns its place
- The Car as a Generator: 80 kWh of Backup Power from an EV with the PowerBridge ProHow the RoamEnergy PowerBridge Pro turns my Tesla's 100 kWh pack into a 3,500 W / 7,500 W generator with no fuel: what it puts out, what it …
- Home Backup Power System: 15 kWh of Battery, a 12 kW Hybrid Inverter, and the Transfer Switch I Did Not NeedThe battery and inverter wired into the house, and the mistake I made on the way: a manual transfer switch in front of a hybrid inverter tha…
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