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There isn't a simple answer to this question. It really depends on the amount of power you require from your solar panel and whether these solar panels are for homes or for a small portable device. You are going to want to first determine the amount of power you require for your load and then go shopping for one based on that need to determine how much it will cost.

Typically you can purchase solar panels for about $3.00 per rated watt if you plan on hanging the panel yourself. Prices have fallen lately on the internet, but after shipping charges, this is still about right. Each rated watt will be able to produce about 2 watts of power each day on average of actual real power. (For the purpose of planning your panel layout). Typical payback (before refunds and grants) is about 25 to 30 years.

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11y ago

What else can I help you with?