1. Most of the plans seem to be all within 5% of each other in overall estimated cost, at least with my usage.
2. SDGE’s website tells you which plan is the cheapest based on the past 12 months usage. This is located on the same page where you switch plans, the estimates are below the plan name.
3. It’s funny to see people with $80,000 cars worry about saving 30 cents by doing their dishes or laundry at night.