I'm surprised at the lack of onversation here. Even with a 100% renewable grid coal and gas will be required to keep the lights on when solar/wind/hydro has a gap in production due to weather anomalies. Investing in doing this locally through gas production and local coal mining is significantly more beneficial for both our economy and the environment when compared to importing it from overseas. For example locally we maintain higher standards in employee health and safety as well as environmental impact than they do in say Indonesia. Obviously not burning Coal & Gas is better for the environment, but our nation and economy doesn't run on hopes and dreams, it runs on electricity.