- [Austin] Today we're at the cold-storage facility in Dandenong, which is just on the outskirts of Melbourne. The job here today is a 210 kilowatt system, 532 LG 400 watt panels - they're the high-efficiency, premium panels on the market. Paired that up with seven Fronius inverters. It all ties into the main switchboard and produces power enough to supply this entire building.

- On this job here, because we've got a north-south aspect to the roof, the rows on this north side are a little bit closer together, all the panels are tilted up at 15 degrees. So, on the other side, with the roof slanting back towards the south a little bit, we've just spaced the rows a bit further, just so that the row in front doesn't shadow the row behind.

- [Austin] The solar for cold-storage facilities is very relevant just because it's a very stable energy load. They have the fridges on 24 hours a day, seven days a week and the solar energy can cover about 40% of their load. The return on investment on this particular site is 4.6 years until the system pays for itself. We set that up conservatively with a 3% increase on their rate of power, over the next 25 years. So the site here at this cold-storage facility has got a 210 kilowatt system - it's going to save them $80,000 dollars in the first year. At the 25 year mark, the system will still be producing and they'll have a total saving of $1.6 million dollars. We get to these figures because we analyze the interval data for the site, we design the system to suit their actual requirements that they need. Through that data we get at every 15 minutes, it's very accurate, then we base that on weather data from the Bureau of Meteorology that goes back 20 years.

The LG panels will return a higher efficiency, so the higher efficiency they'll return more power every day, long term, for the next 25 years. It makes sense to go for the more premium-grade panel.

- I think that energy saving is a real cost for businesses these days, so if they can save anywhere then solar is a pretty easy, low-cost investment. For customers like this, it is about saving money. The solar is really an easy decision to make, it saves a substantial amount of money, reduces their energy costs, and gives them energy security for the next 25 years. I think installing solar is really an easy decision for a lot of commercial businesses. If you own the roof space, you are going to save money, it's as simple as that.