Pennsylvania Public Utility Commission advances measure that aims to protect ratepayers from data center demand

The Pennsylvania Public Utility Commission (PUC) recently advanced guidance and a proposed model tariff to address the escalating electricity demand from artificial intelligence data centers, aiming to protect ratepayers from rising utility bills. During a hearing last week, PUC chairman Stephen DeFrank emphasized the critical juncture for the electrical grid, noting that data centers and advanced manufacturing are causing "explosive load growth" unseen in generations. This growth, particularly from data centers, has been cited by PJM Interconnection, the regional grid operator, as a reason for increased capacity costs that have already led to residential bill increases of 10 to 20% in parts of last year, contributing to a 21% rise in utility shutoffs in Pennsylvania. Elizabeth Marx, executive director of the Pennsylvania Utility Law Project, highlighted concerns that costs for transmission lines and distribution system upgrades for data centers could eventually be passed on to residential and small business customers, making energy even more unaffordable. The PUC's proposed model tariff, which defines large load customers as those requiring over 50 megawatts, includes recommendations such as imposing fees on developers who terminate contracts before utilities recover investment costs. It also calls for large-load customers to contribute to universal service programs that assist low-income ratepayers. Further amendments approved by DeFrank during the hearing affirm that large load customers should be permitted to construct their own infrastructure upgrades when feasible and that electric distribution companies should recover all transmission and distribution costs from these customers, except for pre-planned upgrades. Currently, such infrastructure costs are borne by all ratepayers. While the Data Center Coalition, an industry trade group, commended the PUC for creating a transparent framework, Marx cautioned that because the model tariff is non-binding, legislative measures and careful implementation by electric distribution companies will be crucial to truly protect ratepayers. PECO, an energy company, stated it is reviewing the proposal and supports efforts to prevent cost shifts to customers.