Such material risks and uncertainties are: (i) power plant availability and performance including maintenance expenditures, (ii) changes in electricity prices in markets in which the Company operates, (iii) regulatory and political environments including changes to environmental, financial reporting and tax legislation, (iv) acquisitions and developments including timing and costs of regulatory approvals and construction, (v) ability to fund current and future capital and working capital needs, (vi) changes in energy commodity market prices and use of derivatives, (vii) changes in market prices and availability of fuel, and (viii) changes in general economic and competitive conditions.