Question

Identify the number of independent and subordinate clauses in the following group of words.

Energy can be gathered by using solar power

Answer 1

I think it's a subordinate clause.

Answer 2

Energy can be gathered by using solar power. This is an independent clause; there are not any subordinate clause. There is not a secondary sentence or clause that depends on the main clause. Energy can be gathered by using solar power. This clause has meaning by itself; the idea is complete.

Energy is the subject

can be gathered by using solar power is the predicate; can be is the verb group and by using solar power is the adjunct of means: it tells how energy is gathered.