A report by the Boston Consulting Group of Massachusetts estimates average installed capacity costs for wind plant in Portugal at 20% above those of neighbouring Spain. "The difference is mainly due to strict environmental pressures to use fewer machines, which means developers have to buy more expensive multi-megawatt technology," says António Sa dà Costa of renewables association APREN. The average size of turbines going up in Portugal is close to 1.8 MW, larger than in Spain but close to the norm in Germany. The largest Portuguese contract so far went to Vestas for its 3 MW machine for a project being developed by Enersis. GE Energy is also putting up the first of 14, 2.5 MW turbines in Serra Lousa. The Spanish office of German Nordex, while struggling in Spain, has landed eight contracts in Portugal for nearly 83 MW for its 2.3 MW machine.