It is the cheapest power available. It's reasonably easy to free up wasted power. Freeing up wasted power is the same thing as producing more power, but it can be done immediately.
I'll give you one example. One of my clients, Hydro-Québec, has a plan to free up 3,500 megawatts of power just from energy efficiency. That's more than the biggest dam or the biggest power project that we're talking about anywhere in the country.