I have a contract that uses nordpool spot market prices that are known ahead for each hour for the next day. I have PV on my roof and an EV. The price volatilit

I have a contract that uses nordpool spot market prices that are known ahead for each hour for the next day. I have PV on my roof and an EV. The price volatility is just insane between 2 and 4000 EUR/MWh so 2000x in the last week alone. So I finally connected a smallish house battery (about 14kWh) last week and by purely arbitrage I’ve made about 100 euros in the week. Even with an 8kW feed in cap and such a tiny battery.