The Energy Regulatory Commission (ERC) is gearing up to promote the household solar rooftop scheme and encourage participation after the current enrolment fell short of expectations. This programme began in May after the launch of the national power development plan for 2018-37. The latest plan focuses on new solar power generation of 10,000 megawatts, all coming from the solar rooftop type installed by homeowners. Power capacity under the scheme starts at 100 MW per year during 2019-27 for households and increases solar power generation to 1,000 MW per year from 2028 on, ultimately reaching 10,000 MW by 2037. Last week, the Department of Alternative Energy Development and Efficiency said it would ask the Energy Ministry to launch a revised solar scheme for the public. The revised plan should add solar power farms in order to attract more private investors to this scheme. Solar power, which has been promoted in Thailand since 2007, will be sold to the state grid under power purchase agreements at 9,846 MW. Moreover, a rising power tariff rate, higher generating efficiency and the lower cost of solar panels have attracted hundreds of business operators to install solar rooftops as an independent power supply (IPS) over the last five years.