Green Plumbing

Category - Caring for Our Planet

Which of the following types of renewable energy has the lowest levelized capital cost?
  1. Wind
  2. Solar photovoltaic
  3. Hydroelectric
  4. Geothermal
Explanation
Answer: D -- Geothermal generating plants have the lowest levelized capital costs, among renewable energy sources, at $34.10 per megawatt-hour (as of 2013).
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