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How big do these arrays have to be to hit self-sustainability? I bought a new build house in the UK a few years back which had solar panels pre-installed on th
by nerdawson 4y ago
How big do these arrays have to be to hit self-sustainability?
I bought a new build house in the UK a few years back which had solar panels pre-installed on the roof (IMO that should be a requirement for all new houses). It’s a 1kW array facing west so I’m far from experiencing the abundance this article describes.
- mirekrusin 4y agoThere will be a difference between UK and ie. South of France where you have 300 days a year of full sunshine days.
- KaiserPro 4y agoa 1kw array is realistically going to provide 300-900watts. which in summer is going to get you about 6-9kwhr a day. I have a 5.6kw array and a battery. It has provided 99.8% of our power since march. (only 60% of our power was from solar in january though.) We've generated ~3 MwHr this year, with 1.5 net going to the grid. We don't have a feed in tariff, so any power we generate and export is free to the supplier. This means that we put on the washing machine & dishwasher on during solar peak, so that we stop the power companies making as much money. But. We have gas heating. even with external wall insulation we using about 500kwhr a month in febuary. (Im not sure that acutally all, as the smart meter has stopped reporting properly.)