Well worth the dollars spent! – Purchased this product and had it installed in late July 2018. Our regular electrical output is 5000+ and the whole system will pay for itself in around 5-6 years time. The monthly electricity bill has gone from around $110.00 to $44.00. VERY happy! Btw, this installation was conducted by Solar Electrical in Eaglehawk. Fantastic service before, during and after installation!