If you're wanting to make money -no. We just got a letter from Energy Australia saying our tariff has dropped to 6.6c.

If you're wanting to save money - definitely! We installed a 3kw last Oct as well as solar hot water. Before that our quarterly was about $1000. Our first bill after installation was $480. The most recent was $348. We only make about $20 a quarter from tariffs, but we just make sure to do as much as we can during the hottest part of the day.