Solar power to be mainstream energy source by 2025

As a form of energy, solar power is currently at least four times too expensive and it will only become truly mainstream when its dollar to Watt ratio is comparable to other energy sources.

The timing will depend on levels of research investment, of national, international and multi-national co-operation and the rate of increase in the cost of non-renewable energy. However, it seems inevitable that by 2025 photovoltaics will be a fully cost competitive alternative to gas, coal, nuclear or any other renewable supply.

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