- Which country produces the most electricity from renewables? - 4264 votes - open
- How many American homes can be powered by the installed wind capacity of the United States today? - 3605 votes - open
- When was the first practical solar photovoltaic cell developed? - 2651 votes - open
- A 2MW wind turbine can power ____ homes. - 2462 votes - open
- Renewable energy is risky for the economy; it is too expensive to be viable. - 2491 votes - open
- Which of the following is true about solar energy? - 2448 votes - open