heyy i wanted to know how many solar panels will i need to produce 2 kw of energy ?
And how much would the average cost of a solar panel be?
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{ 3 comments… read them below or add one }
Modern solar panels are roughly 200 watts in size, although I suppose they tend towards a little larger.
That means you would need 10 of them to produce your 2 kW, at a cost of perhaps $ 700-800 each.
Do remember that 2 kW is a power rating, not energy. That means you get 2 kW when peak sun is shining on the panels, and none at night. If you get the equivalent of 5 hours of peak sun a day, that 10 Kwh (note the little h meaning kiloatt-hours) per day. You can compare that with your energy bill to see how it lines up.
First of all there are now many solar cell panels on sale with various wattage output ratings, so if you get 100w types your need twenty.
The cost will vary from area to area, they are still quite costly but start a little at a time & build up your system.
First you have to know what the insolation potential is in your area. This is the amount of available sunlight energy that arrives at the Earth’s surface per area (square meter.) Latitude and cloud cover (humidity) are influential factors.1 Arizona has higher average insolation levels than Maine.
Next you would need to know the efficiency levels of your particular brand of solar photovoltaic panels. They are typically between 8 and 22%. Here are some samples: 2 You will require more panels if they are less efficient. The price should be lower for panels that are less efficient but the only way to determine value would be to table or graph the results and determine totals. A spreadsheet will help.
Last you need to add the output to get at least 110% of the desired result. You can expect that an inverter will take cost you 10% of the output.
Even better than the average cost of a panel would be the average cost of an installed system. But since you asked about the panels you can use the list under (2) to look up prices. Prices are always changing and there are always deals to be made.