So if you have a 7 5 kw dc system working an average of 5 hours per day 365 days a year it ll result in 10 950 kwh in a year.
How many kwh does a solar panel produce per hour.
30 panels x 250 watts per panel equals a 7 500 watt system 7 5kw.
If we take california as an example the map shows that on average 1 kw of dc peak capacity of solar panels produces 4 5 kwh per day or 1642 kwh per year.
Panels can produce 1500kwhr kw purchased or 1800kwhr kw purchased.
On average a normal household will use around 37 kwh per day.
To figure out how many kilowatt hours kwh your solar panel system puts out per year you need to multiply the size of your system in kw dc times the 8 derate factor times the number of hours of sun.
According to pvwatts each of your 335 watt panasonic hit panels should average about 1 5 kwh per day across the whole year with a high average of 1 83 kwh per day in august and a low of 1 kwh per day in december.
People by solar by the kw or the maximum amount of energy the panel produces in an instatnt but the utility charges for kwhr or how much energy you use per hour.
However keep in mind that there are many factors at play here so this is really only a rough estimate.