The diagram below shows how geothermal energy is used to produce electricity. Summarise the information by selecting and reporting the main features, and make comparisons where relevant. Geothermal power plant Generator Turbine - Steam Cold water Condenser (powered by (powered by turbine and steam) produces electricity) 4.5 km Cold water pumped down Hot water pumped up 2 The injection well Geothermal zone (hot rocks) 3 The production well