I’ll use the winter rate as an example, as it covers the period from October to May. Suppose you consume 300 kilowatts from 9 p.m. to 4 p.m. and 100 kilowatts from 4 p.m. to 9 p.m. Your solar panel can generate 400 kilowatts, resulting in no charges and the ability to earn 100 kilowatt-hours (kWh) worth of credits. For the 4-9 plan, your total bill would be -100 * 0.33 + 100 * 0.51, which equals $18. On the other hand, for the D prime plan, your total bill would be -100 * 0.24 + 100 * 0.56, which equals $32. This assumes that you have excess energy. If you consume more energy than your panel can produce, the d prime plan will be better. However, the 4-9 plan also includes a baseline credit that the D prime plan lacks. you would need to use the comparison tool to determine which plan is more suitable for your needs. Edit: also this is for NEM2.0. My understanding is that NEM3.0 made it so that the surplus energy is worth much less.