Business Green: Japan has announced it will to convert its 32,000 public elementary and middle schools to run on solar power by 2020 as part of its effort to reduce greenhouse gas emissions. The government last week agreed to provide between $650m and $980m in subsidies for the project so that municipalities would only need to pay 2.5 per cent of the cost. The schools are expected to be fitted with 20kW rooftop solar systems, which the Education Ministry estimates will adequately power …