GE Energy has signed a contract with the Ontario Power Authority (OPA) to assess the impact of wind power penetration levels of up to 25-35% on Ontario's electricity system, one of the largest in North America, with a peak demand of more than 27,000 MW. The goal of the study, says GE, is to determine the maximum amount of wind power that could be integrated with minimal impact on system operation. The results will be used by the OPA to help develop a 20 year integrated power system plan. "Studying large penetration levels of wind is an essential step in the process of developing a comprehensive energy strategy for Ontario's system," says Hamid Elahi, who manages GE's energy consulting group. The study is the third of its kind for GE. The first was a landmark study of the New York State power grid and the second, in progress, looks at integrating wind in California.