SolarEdge has this all sorted out with their power optimizers. The inverter can tell the power optimizers to scale back the power output when needed (battery is full, zero export setting and production exceeds demand, etc). More importantly for this thread though, Enphase micro-inverters have a similar power scaling feature. Source (Last paragraph of page 2): https://enphase.com/sites/default/files/downloads/support/TechBrief-Export-Limiting-HEI-Self-Supply-EN-US.pdf Why is Tesla trying to knock the solar systems offline when productions exceeds demand when they could be interfacing with them and using the power scaling features? I'm not familiar with the Enphase controller (Envoy?) but SolarEdge uses a standard RS-485 connection and ethernet.