The important factors in commercial jobs, the customers want to actually insulate themselves from future energy costs. So by investing in solar you can have a three to five-year return. If you invest a little bit more, you can have a system that's actually going to last 25 years and insulate yourself from future energy costs. The levelised cost of electricity in a solar system is one of the best in the market. So you can actually invest in a solar system, and actually guarantee future energy savings. In a lot of tenders, they do specify a higher quality equipment with a high efficiency, with longer warranties. They also can specify a Clean Energy Council retailers. In the commercial sector for up to a hundred kilowatts, you can easily get anywhere from a two to five-year return, which the bean counters always love.