I disagree. Technically, Incite only carries the idea of to urge or spur on, to instigate, stimulate. One can be incited to do something, and it is this action that is incited that carries positive or negative connotations. I must point out that I am an older native speaker, and so my language is more conservative. Perhaps younger speakers think of incite more with its negative connotations!
Because 'incite' is more commonly used these days with negative actions — 'incite to riot' for example — there has been a tendency to regard the word itself as having a negative sense.
This is exactly how language changes! Shades of meaning that become attached to a word — whether rightly or wrongly — eventually become part of that word.
A classic example from the past is 'silly' -- the word originally was 'selig', and meant 'blessed', but a person who was blessed often behaves in a strange or unusual — or silly — way, and this modern meaning has completely replaced the older sense.
The word 'entice' seems too passive for this example — you need a word that carries more of a sense of 'pushing'.
With a little extra push, solar power could become a cheaper energy source, thus forcing pollution-causing petroleum industries to shift their focus to the renewable energy sector.
or, even better
With a little extra push, solar power could become a cheaper energy source, thus encouraging pollution-causing petroleum industries to shift their focus to the renewable energy sector.
(Sorry — I was going to add this as a comment, but it was too long!)