Income-based monthly charge for customers of large California power companies

https://www.eastbaytimes.com/2023/04/12/pge-month-bill-jump-electric-gas-price-consumer-utility-income-economy/

This is still just a proposal, but a new state law requires. something like it by July 2024:

>Households earning less than $28,000 a year would pay a fixed charge of $15 a month on their electric bills.
Households with annual income from $28,000 to $69,000 would pay $30 a month.
Households earning from $69,000 to $180,000 would pay $51 a month.
Those with incomes above $180,000 would pay $92 a month.

Start with the linked East Bay Times article and the quoted income bands in the issue. No files, tests, or implementation entry points are named, so first identify where California household utility charges are represented. Done means the required income-based monthly charge is modeled for the affected large California power companies and covered by appropriate tests.

Written by the indexing model from the issue text.