PEC Rates The PEC staff and board work to keep rates stable. Rates are reviewed annually.View RatesHow to Read Your Bill Image Late Fee Accounts delinquent by 30 days or more will be charged a late fee of 3% per month of $5.00, whichever is greater. These accounts will be subject to collection and disconnect procedures. PCA (Power Cost Adjustment) PCA reflects the fluctuation of the cost of purchased power from Dairyland Power Cooperative, PEC's wholesale power provider. Public Benefit Monthly fee required under Wisconsin's Reliability 2000 legislation. The fee is aimed at improving energy conservation and providing low-income energy assistance.