While solar water heating is popular in Hawaii, solar panels providing electricity have been too expensive for all but a few homeowners.

Now a mainland company is promising to change that and scores of Hawaii residents are already signing up for new solar electrical systems, KITV reported.

Even with tax credits, the $40,000 price tag for a household solar electric system scares away most people. But now a company called Citizenre is selling solar panels in the same fashion as cell phones. More…