1.The government will bring electricity to remote areas next year
-> electricity will be brought by the government to remote areas next year.
2.we will solve the problem of energy shortage by using solar energy
-> Using solar energy can solve the problem of energy shortage
3.the government will build a new hydropower plant to meet increasing demand
->  a new hydropower plant will be built by the government to meet increasing demand
4.In the coming decades, we will use renewable energy every day
-> In the coming decades, renewable energy will be used every day
5.will we use up all the world's oil in the next 100 years?
-> will all the world's oil be used up in the next 100 years?
6.they will place solar panels on the roofs of houses to produce hot water and eletricity
-> solar panels on the roofs of houses will be replaced to produce hot water and eletricity
7.alternative energy sources won't replace coal,oil,and gas anytime soon
-> coal,oil,and gas won't be replaced by alternative energy sources anytime soon
8.will renewable energy completely replace fossil fuels in the future?
-> will fossil fuels be completely replaced by renewable energy in the future?