The first step is in determining the variable costs and the fixed costs. You can reduce the variable costs with self-generation, (solar, wind, hydro) fixed costs are likely fixed.
So start with accurate costing and totals.
Her bill listed 222.84 in generation services. 188.86 in fuel factor at 0.0413900 per kWh. 176.04 transmission services 101.02 distribution services
Some taxes etc and a final charge of 1359.78. I'm remembering now that they did overcharge her & we talked about that w the power company getting a credit for the next bill. My mistake on that. But yeah for the last several months her bill has consistently been extremely high, 900 this past month, 1100 a prior month.
Her kWH usage is 4562 per month & I'm really not sure how she gets to that, she literally drives between 1 & 2 hours to work and back every day depending on location so she's only home in the evenings.