Oh, I'm almost certain it is. But, given that, the more energy I can make and utilize with it, the lower the effective carbon per kWh is. It's also, of value to me, a totally standalone power system, and a good R&D system for me to experiment with, because I can do things without bothering the house system. If I screw up and black out my office, well... I've blacked out my office.

However, my system is also rather a good bit more reliable than the grid power on the house, which is nice for remote work.