The Ontario government is promising more tax breaks to encourage the installation of alternative energy technologies like wind. The 2003 budget proposal includes a 100% corporate income tax deduction for new renewable energy assets that companies used to generate electricity for their own use. It also extended a sales tax rebate now in place for solar energy systems to include residential wind turbines, micro-hydro and earth energy systems bought before November 26, 2007. Finance Minister Janet Ecker also has plans to invest C$20 million over five years to establish a Centre of Excellence for Electricity and Alternative Energy Technology, which will co-ordinate applied research and commercialisation projects and develop energy education initiatives. The budget measures come on top of a series of tax breaks for alternative energy sources announced in November in an attempt to boost electricity production in the province's tight supply market. Those include a corporate income tax holiday, a property tax holiday for new facilities, a 100% corporate tax write-off for the cost of assets used to generate new supply and a capital tax exemption for those assets. The Independent Power Producers Society of Ontario (IPPSO) praised the budget initiatives, but called on the government to go even further by implementing a long-promised renewables portfolio standard in the province's electricity market.