The "tipping point" will arrive when the capital cost of solar power falls below $1 (51p) per watt, roughly the cost of carbon power. We are not there yet. The best options today vary from $3 to $4 per watt - down from $100 in the late 1970s.Never heard of this company Flisom before, but I think thin film solar cells (NanoSolar makes them as well) show a lot of promise, and if they can hit the price numbers they are talking about, it is a company to watch.
Mr Sethi, the chief executive of the Swiss start-up company Flisom, believes his product will cut the cost to 80 cents per watt within five years, and 50 cents in a decade.
It is based on a CIGS (CuInGaSe2) semiconductor compound that absorbs light by freeing electrons. This is then embedded on the polymer base. It will be ready commercially in late 2009.
In fact the whole solar industry is looking good.
Mike Splinter, chief executive of the US semiconductor group Applied Materials, told me his company is two years away from a solar product that reaches the magic level of $1 a watt.Those are some serious growth numbers. I need to take a look and see what companies are likely to take advantage of this growth and then invest in their stocks.
"We think solar power can provide 20pc of all the incremental energy needed worldwide by 2040," he said.
Michael Rogol, a solar expert at Credit Lyonnais, expects the solar industry to grow from $7bn in 2004 to nearer $40bn by 2010, with operating earnings of $3bn.