Jeremy Leggett at Sunrise Celebration

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Sunday at the Sunrise Celebration was dedicated to the Transition movement and there were talks around the issues of permaculture, peak oil and transition towns. Jeremy Leggett, the chairman of Solarcentury, gave a talk on peak oil (which we didn’t see) and then one on solar energy, which we did manage to catch.

There are some interesting things happening in the world of solar energy. It’s now expected that the cost of solar energy will match the cost of fossil fuel energy by 2013 and will then continue to fall. This is being driven by various factors, notably increased efficiency in the manufacture of the materials needed for panels and the panels themselves, and economies of scale as larger manufacturers come into the market. The efficiencies also mean that modern PV panels will pay back their energy (as opposed to financial) cost in less than two years.

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