The downward trend in wind power prices is slowing, partly due to increases in the cost of steel. A shortage of wind turbines is also holding their prices up. Offshore, too little construction is happening to achieve the expected cost cuts from learning curve efficiencies. Of the competitors, gas prices are still rising, but coal is looking harder to beat, even with carbon penalties. Carbon sequestration could add to its costs. Nuclear is claiming it can lower its prices, but nobody seems willing to take a risk and invest in new build to prove the theory.