Pennsylvania gas utilities spent $11B on pipeline replacement
Six major utilities in Pennsylvania allocated $11 billion to gas infrastructure over twelve years, driving per-mile costs and residential rates significantly higher.
Peoples Natural Gas, Philadelphia Gas Works, National Fuel Gas, UGI Utilities, Columbia Gas of Pennsylvania, and PECO Energy collectively invested $11 billion in natural gas pipeline replacement between 2013 and 2025. This sustained capital expenditure reflects a strategic shift toward accelerating infrastructure upgrades to maintain distribution network reliability across the state.
The financial outlay was supported by regulatory frameworks that allow utilities to recover eligible infrastructure costs through customer surcharges. As a result, infrastructure-related delivery charges now constitute approximately two-thirds of a typical residential gas bill in Pennsylvania, directly linking capital spending to consumer pricing.
Rising Per-Mile Infrastructure Costs
Per-mile pipeline replacement spending more than doubled over the past decade, rising from approximately $1.2 million to $2.8 million. This increase indicates that the cost structure for maintaining gas distribution systems has become significantly more intensive, requiring higher capital injections for each mile of new main installed.
Building Decarbonization Coalition estimates this equates to roughly $40,000 per residential customer for every new mile of gas main. The data highlights how the scale of capital projects has expanded, affecting the average monthly bill for customers of the six major utilities.
Regulatory Framework Enables Recovery
Pennsylvania’s Act 11, enacted in 2012, facilitated this investment by allowing utilities to accelerate capital projects and recover costs through surcharges. This regulatory mechanism enabled the rapid deployment of replacement programs, contributing to an average 67% increase in monthly bills among customers over the last ten years.
Recommendations for Future Infrastructure Planning
The Building Decarbonization Coalition recommends revising Act 11 to prioritize safety-critical infrastructure and requiring utilities to evaluate alternatives before executing gas pipeline replacements. The group advocates for long-term gas system planning and greater transparency in rate cases to ensure efficient capital allocation.
Furthermore, the report suggests coordinating gas and electric utility strategies, including neighborhood-scale electrification and thermal energy networks in areas where aging infrastructure requires replacement. This approach aims to address decarbonization goals while managing the financial impact on residential customers.
