Electricity isn't just expensive

[harm_less]

Locally, today a hydroelectric system on the house down pipes would definitely have the power to give much better returns than solar panels (although if the panels were reverse connected to harvest darkness they might have more current than hydro).

Yeah, a bit patchy ATM as it pisses down with heavy overcast conditions, but we did harvest ~20kWh this morning before the weather crapped out. Swings and roundabouts as we generated close to 50kWh/day over the past 4 days.