Yes, there will be winners and losers under the proposal. Those of us who were well into Tier 4 before we added an EV to our daily consumption will be winners.
But the notion that those in the lower tiers conserve and those in the higher tiers do not is hogwash. I'm in tier 4 mostly because there are four people living at home and our house is large. The house is also new (2008) and obviously up to code. So we have CFLs galore, new energy efficient appliances, etc. But four people using their computers at once in a single household? That happens every night at my house and there's not much we can do about it except go to the library to use the county's electricity.
PG&E has been over-charging the higher tiers and under-charging the lower ones. That's a fact. Call it class warfare. (
) It works for me, because right now every kw I put into my Leaf is in Tier 4 (or 5), and I'm paying almost triple what Tier 2 juice costs.