I generally think it's fair for utilities to pay wholesale prices for dumping excess solar energy onto the grid, but the situation in this article is more subtl

I generally think it's fair for utilities to pay wholesale prices for dumping excess solar energy onto the grid, but the situation in this article is more subtle. If you have a building with solar and 10 apartments, at a given moment the building could be supplying 100% of the residents' energy demand, yet the residents still have to pay the "retail minus wholesale" price because utilities can't be bothered to write the software to measure what the building is actually doing. That is an injustice. You could sort of argue that the energy is traversing "the grid" when it bounces off the local utility-owned transformer, but the additional maintenance cost is basically zero.