Sorry to answer the question solar power reduces the use of petrolum based products for heating/electricity/transportation so decreasing the consumption of energy. There is so much energy used to create energy via petrolum products not to mention the environmental side of the equation. And people will argue that solar panels cost alot to make but there are many other passive and active solar ways to create/save energy that solar panels need not be the whole equation of energy generation from solar sources, wind turbines are by far the most cost effective and this is why so may wind farms are being built.
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