Распределим слова по колонкам "Count Nouns" (исчисляемые существительные) и "Noncount Nouns" (неисчисляемые существительные).
| Count Nouns | Noncount Nouns |
| windmill | energy |
| power plant | resource |
| turbine | natural gas |
| solar panel | heat |
| power | |
| electricity |
Ответ: Count Nouns: windmill, power plant, turbine, solar panel. Noncount Nouns: energy, resource, natural gas, heat, power, electricity.