I might use NG at night. (I don’t necessarily. My local power is wind, then either NG or Nuclear, which ever is cheaper.)
But my net negative power usage from the grid means that I’m using less energy than I feed in when it isn’t shinning out.
I use 65% of the power I produce, and the excess is fed into the system. That’s annually. So while yes I draw at night, I’m generating enough power during the daytime that it’s more (significantly) more than I use at night. (Moreover, the rates for my usage are less than the rates I get paid for power during the daytime.)
45% of my power generation contributes to that 54% carbon neutral sources in MN.
So, it. Balances out. (And in the near future I’ll get a residential battery for night. Those are freaking expensive, though.)