11, and I wish I'd bought 15
replyI bought 32 and wished I got another 6 for the south west aspect of the house ... but still, producing 11mWh a year in the UK on an east/west aspect, electricity bill for the year (even with all cars in the household being EV's) is negative. Battery makes the difference - load shifting is doing the heavy lifting in the winter.
replyI hope you’re generating more than 11 milliwatt-hours per year, guessing you meant MWh :)
reply32*250*1400=11,200,000 watt hours, which makes more sense ;)
Probably depends on what country they live in and whether their government is spending billions of their taxpayer dollars to simply not build renewable energy projects and invest additional billions on top of that in new oil, gas and coal instead.
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