Texas Energy portal Subcategories This category has the following 7 subcategories, out of 7 total. Proposed renewable energy power stations in the United States (2 C, 2 P)B Biofuel power stations in the United States (1 C, 4 P)G Geothermal power stations in the United States (3 C, 2 P)H Hydroelectric power plants in the United States (3 C, 1 P)S Solar power stations in the United States (13 C)W Waste power stations in the United States (9 P) Wind farms in the United States (3 C, 2 P)