I'm building or buying a new home, should i install a solar system
There are not many items in your home that will pay for itself after a few years, before starting to make money for you year after year. And then, when you decide to sell your home, you will reap the added desirability and resale value that solar provides. See real estate survey
There are solar panels installed in Australia in the early 1990s which are still producing electricity today, so you can expect the benefits of a quality, LG solar system to be available for decades to come.