What level of detail is required for energy calcs in regards to utility rates? For example, most utility energy charges are now fluctuating daily for both gas and electric. Some rates, depending on the service size are fluctuating Hourly!

We are using EnergyPro 5.0 and I tried to build an hourly rate schedule based on average daily rates and it exceeded the capacity of the program.

Other clients want us to use an average rate that even includes demand.

Is there a minimum standard for building a rate schedule for LEED?