3kW Off grid with grid backup – Paarl
There was a bit of a delay with getting the municipal power connected to this new home and the owner asked us to add solar to the backup system we were going to put in. We installed the system approximately 6 weeks before they moved in, which was great for the carpenters and other craftsmen working in the house to get it ready. 8 Months later, the owner still has not had Eskom power connected, claiming that they have more than they need. This will change in winter, but it goes to show how far you can get with a relatively basic system.
A note on the batteries:
As with many of our clients, we install relatively cheap batteries, that will last 3 – 5 years, depending on how they are used. The reasoning is that by that time the battery technology will be affordable and more reliable and will be a good time to invest in a battery bank that will last for 10+ years With the advance in and local availability of lithium battery technologies that strategy is starting to give way for putting in the really good stuff now.