u/Moolynx

Hey all,

I'm in Melbourne with 7 kW solar, 40 kWh battery and an EV. Thinking about switching to Flow Power with Home Assistant to do some arbitrage, buy cheap from the grid at midday when spot prices are low, top up the battery, then sell back during the evening peak (happy hour).

The solar alone probably won't fill the battery on cloudy days (which Melbourne seems have plenty of), hence buying to make up the difference and also help charge my car!

Has anyone run the numbers on whether the buy/sell spread actually makes this worthwhile, or do the margins get eaten up too quickly?