1. They will install solar panels on the roof of our house next week.

=> Solar panels will be installed on the roof of our house next week.

2. Will the plumber check cracks on the water pipes in two days?

=> Will the water pipes be cracked by the plumber check in two days?

3. They won't show the film on types of future energy sources next Friday.

=> The film on types of future energy sources won't be showed by them next Friday.

4. They will destroy the old thermal power plant at the end of this year.

=> The old power plant will be destroyed by them at the end of this year.

5. We will be using biogas for cooking and heating at this time next month.

=> Biogas will be used for cooking and heating at this time next month.

6. People won't burn fossil fuels for energy in the future.

=> Fossil fuels won't be burned for energy in the future.

7. Shall wereduce our electricity bills to 20% in five months?

=> Shall our electricity bills be reduced to 20% in five months?

8. We will be providing electricity this time next year.

=> Electricity will be provided this time next year.

9. They will increase the tax on petrol to 15% next September.

=> The tax on Petrol will be increased to 15% next September.

10. We shall replace ordinary 100-watt light bulbs with energy-saving ones.

=> Ordinary 100-watt light bulbs with energy-saving ones shall be replaced .