Critical Peak Pricing (CPP) is a pricing model used by electrical utilities where the cost per kilowatt-hour varies, depending on time of day. Electricity peak demand times, usually in the afternoon in the summer, will be charged at a premium or higher rate than other times during a 24 hour period. The term "net metering" is sometimes used to determine and record peak demand. Electrical utility companies have begun installing "net meters" that calculate kilowatt usage during "peak demand" and "normal or low demand" periods. This information is used to determine costs based on this two-tier pricing model.
"So how does this relate to roofing?" If the user can reduce electrical usage, they will save money. This can easily be accomplished by reducing air conditioning electricity usage. A very easy and cost-efficient way to achieve this is to coat the building's roof with a white reflective roof coating.