Excuse the title gore.
Who sells electricity to consumers and small and medium sized businesses, and what consumer groups do they sell to? What are products on the market today that a consumer or small or medium sized business can buy to generate electricity, and what groups of people buy those today? Where is the market heading?
End result of this analysis might be a table of products and consumer groups, both with weighted scores on several criteria.
Topic inspired by this topic: The no market Hypothesis