1. World energy outlook,2004
2. O’Gorman R, Redfern M. The difficulties of connecting renewable generation into utility networks. In: Power Eng. Soc. general meeting, vol. 3. Toronto; 2003. p. 1466–71.
3. Balancing fluctuating wind energy with fossil power stations – where are the limits?;Leonhard;Electra,2002
4. Leonhard W, Grobe M. Sustainable electrical energy supply with wind and pumped storage – a realistic long-term strategy or utopia? In: Power Eng. Soc. general meeting, vol. 2. Denver, CO; 2004. p. 1221–5.
5. Methanol from atmospheric carbon dioxide: a liquid zero emission fuel for the future;Weimer;Energy Convers Manage,1996