Solar nergy could become competitive in the short-term with conventional electricity, according to a report bybusiness consultants and accountancy firm KPMG, commissioned by Greenpeace. The KPMG report, "Solar Energy: from Perennial Promise to Competitive Alternative", calculates that one large-scale solar PV (1) factory which produces five million solar panels a year (equivalent to 250,000 homes, each with a two kilowatt system) could reduce the cost of solar power by a factor of four making it price competitive for domestic consumers with electricity produced from conventional sources.