This section focuses specifically on energy supply, the next section considers energy use. The approaches and tools presented here address, in turn, the policy, regulatory, and economic dimensions of the enabling environment. National energy policies should integrate renewables into the country’s energy portfolio, engage the private sector in technology development, build confidence in the financial community about renewable technologies, and where appropriate co-ordinate investments across national boundaries (IEA, 2001). Such policies can support co-operation among institutions and provide guidance in selecting low-carbon options tailored to unique country circumstances and priorities.