Gas and oil prices eased during 2006, so wind faces tougher competition from these sources. The resurgence of coal fired generation, possibly with advanced, high-efficiency plant or carbon capture and storage (CCS), could present another challenge for wind's growth. But for CCS to be commercially attractive, a high price for carbon emission allowances is needed. That would likely keep wind as an economic option for hedging fossil fuel price volatility. Nuclear continues to be pushed as a strong competitor on cost and greenness, though the ever slipping build schedule of the new Finnish reactor tells a different story.