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• You said solar modules are made in factories, but you said that factories pollute and cause climate change?

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• When our PV system produces 40 kWh of electricity, how many refrigerators or washing machines will that run and for how long? What are the differences between kW and kWh?
• What is the difference between Global Warming and Climate Change?
• I heard that eating hamburgers may contribute to climate change. How does that happen?

Do scientists know how many solar modules there are in the US? What about the world?

This last year approximately 1.7 million solar modules were installed in the United States*. Around the world even millions more were installed in just one year.

*Solar Energy Industries Association, US Solar Industry Year in Review 2008, estimated that 342MW of photovoltaic modules were installed in the United States.