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solar power.. watt to kwh?
can some one tell me if my math is right?
on avg I'm using about 500mwh a month so would this be right 31days x 12 hours = 372 hours in a month 500mwh / 372h = 1.3mw per hour 1.3 x 1000 = 1300watts so 1300 watt solar panel array should take care of a big part of my power needs
Sorry That should read 500 megawatt hours, so how do I calculate what size of an array I would need?
2 Answers
- Anonymous1 decade agoFavorite Answer
if you're only getting 1.3 milli watts from it it hardly seems worth while bothering with.
Anyway, to answer your question you cannot convert watts to kilowatt hours. One is a measure of power the other of energy. You can't just convert.
If you're using 500 milli watt hours/month forget it, purchase a couple of AA cells and it'll last you 6 months.
Oh, "500mwh / 372h = 1.3mw per hour" is totally wrong. It's NOT 1.3mW per hour, it's just 1.3 mW
You're confused and totally misunderstanding the difference between power and energy
If your consuption is 500MWh/month that's - well quite a lot lol you could run an entire estate on that - anyway that's about 15MWh/day
so if you have a 12 hour day you need to be able to produce
1.3MW you'll also need about 50 tonnes of lead-acid batteries to see you over cloudy times and night time. Forget it, cheaper to run a generator, just looking after the batteries will be more than a full-time job.
Maybe some kind of pumped-storage system would be possible for you.