The more of the energy that you can off-set in your household, the larger the environmental impact!
It is well documented that solar is a clean source of energy that does not have nasty by-products which harm the environment.
Solar also takes advantage of a free, abundant resource, sunlight.. which we have a lot here in Hawaii!
Other sources of traditional energy, not only destroy the environment when being mined and refined, but must also be regularly transported here to the islands, which also consumes energy!
As a Hawaii resident, there is an amplified benefit to going solar.