The cost of installing and owning solar panels will fall even faster than expected according to new research. Tests show that 90% of existing solar panels last for 30 years, instead of the predicted 20 years. According to the independent EU Energy Institute, this brings down the lifetime cost. Incentive programmes for solar panels in Germany, Italy and Spain have created manufacturing volume that's bringing down costs. Solar panel prices dropped 30% last year alone due to an increase in output and a drop in orders because of the recession.
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