An isolated manufacturing site is planning a local electricity supply. It would use electricity from a wind farm whenever it is available. A bio-fuel power station with a maximum output of 25 MW could also be built.
The table shows the site's electricity demand and the wind-farm output measured during one day.
| Time of day | Electricity demand (MW) | Wind-farm output (MW) |
|---|---|---|
| 06:00 | 27 | 23 |
| 12:00 | 22 | 31 |
| 18:00 | 34 | 8 |
| 23:00 | 25 | 19 |
Compare the roles of the wind farm and the bio-fuel power station in this plan. Use the data to reach a conclusion about whether the plan could meet demand at all four times, and include environmental effects of both resources.
86 exam-style questions on AQA GCSE Physics 1.3 National and global energy resources, covering 1.3 National and global energy resources. Each one has a worked solution and a mark scheme showing where the marks go.