So you're paying a marginally higher rate almost all day on variable-rate, but substantially higher 5-9pm. The math pencils if you have a home battery you can use to load-shift, or perhaps drive an EV a lot.
(Also: this structure is clearly designed around summer cooling load, but peak load is actually winter heating. I don't know what SCL is thinking.)
The morning and evening peak loads are about the same. But in the morning, hydro generation is higher, because the Skagit dams hold back water overnight and spin up for morning peak. Evening peak is when there isn't that excess generation available.
