I have a 12 year old PV system and I have been thinking about buying a battery for nearly a decade. I have always considered the usual cost / benefit analysis was flawed because it was only depreciating the value of the products - PV, battery, grid electricity and all that. For me, real analysis looks at the global benefit of PV and asks me what can I do. House prices go up and sometimes down. Cars and white goods are depreciated over a few years, but who says owning a refrigerator is a waste, or who claims not to use a washing machine and yet they wear out and (money is wasted on them?). Time for action! So I looked at Pure-Electric. I was most happy with their advice. I felt confident that I was making the right decision and noted that their price was more that competitive. The installation was a breeze having been convinced that I did not need to have the Tesla Battery installed in the garage. Again, I was helped through the "rules" for installing a battery. Easy! Now I am monitoring my Tesla performance. I am sure that I will be seeking more advice on how to make best use of my whole PV system, and I am confident that Pure-Electric will be my first port for advice.