All participants in the CSI program must have a revenue-quality solar system dedicated meter. This is essential to tracking a system's output, Although this is essential for measurement and evaluation of systems on a PBI incentive, the meter also is important to providing performance feedback to owners of systems that receive an up-front EPBB incentive. While system performance is indirectly included in the customer's monthly electric bill, it may be difficult for customers to interpret their bills due to fluctuations in monthly energy demand versus PV system output.