Switches in every new home, transformer and power line let the grid split into islands of any size, from 1 home to 300. Each island runs on its own solar, batteries and EVs, then rejoins the grid when it's safe.
Pick a situation. Each color is one island; gold is grid power.
Every roof has solar. Bar: home battery. Diamond: EV that can share. Box by each transformer: its 50 kWh island battery, with a red tick at the 10 kWh floor. Tap any switch for its readings.
Tap a switch or a home on the diagram.
Batteries earn money by selling stored solar when power is scarcest, but each one always holds some back for outages.
California's code already calls for it on new homes. It runs islands by day and refills batteries.
The owner keeps a backup reserve and can sell the rest at peak hours.
Share only in outages, and never below the owner's 40% driving reserve.
50 kWh for about 15 homes: 10 kWh locked for emergencies, 40 kWh to buy cheap and sell at peak.
Why owners join: scarce power pays more. California home solar exports earn about 5¢ per kWh at midday and up to $3.32 on the scarcest September evenings.
The grid fails at 9 PM, just after the evening sell-off. Heat wave, no sun until 6:30 AM, only 12 of 30 home batteries working.
14 EVs is about 1 in 6 homes. Try it in the simulator's Settings.
The home node fits in the meter socket, like the meter collars utilities already approve. Bigger versions of the same board run the transformer, line and base switches.
New homes only. California already requires new homes to be battery-ready, with backup circuits, so the node adds little cost. On an older street, the node islands just that one home.
Most pieces already exist. What's new is fitting them together under one rule.
Based on a quick patent search, not a formal one. The simulator checks the rules, not the electrical physics. Next: read the Tennessee and GridOn claims, model a feeder in OpenDSS, and build bench nodes.