To fulfil this obligation, and in light of recent developments in our renewables potential, the Scottish Government is currently conducting an internal study on the extent of the need for new thermal generation. This will take account of our clear policy on CCS and CCS retrofit which requires demonstration of CCS for new coal plants on a minimum of 300MW net from day one, retrofitting by 2018 following a review of the technical and economic viability of CCS, and full CCS on new builds from 2020, and will reflect the competitive and dynamic nature of the electricity market.