Bloody numbers! I also have snags dealing with them and I have an A level in Maths.

Your discount rate at $0.26 - I assume that is for overnight usage - sounds a bit nasty. Are you able to move to another provider or are you tied to a single provider?

If the latter, then that is another discussion 8)

Basically one provider.

More details: All but the generation charges are from a single company that (among other things) is paying off a lawsuit for having not properly maintained lines running through highly flammable forests.

The generation charges can com from two companies; one has a slightly higher sticker-price, but discounts down to what the other charges, so the rates are identical.