Utility Rate Requests Jump 26% to $9.2 Billion as Grid Costs Hit Residential Bills
US utilities filed $9.2 billion in Q2 rate requests, up 26%, as data-centre load growth forces grid investment costs onto residential bills.
US electric and gas utilities filed $9.2 billion in rate increase requests with state regulators in the second quarter, up 26% from $7.3 billion in the same period last year, advocacy group PowerLines reported on Tuesday (2026-07-14).4
The scale of the wave reflects investment cycles driven partly by data centre proliferation and broader electrification. It also exposes a political problem now playing out in commission hearings across multiple states: why should residential customers bear costs tied to commercial expansion? The approval rate and timing of these proceedings will shape utility cash flows for years.4
Duke Energy's North Carolina rate case is the sharpest example of the conflict. The utility trimmed its residential electricity rate hike request to 11.6%, down from an earlier 18% proposal, yet still faced a seven-hour regulatory hearing on Wednesday (2026-07-08) in which commissioners and consumer advocates challenged the financial logic behind the filing.2,1
Data centres are central to Duke's case. The company has said those facilities account for more than 85% of the expected load growth from new economic development projects seeking to connect to its North Carolina grid. Duke proposed grid upgrades to handle that capacity. The dispute is over who funds them.1
Duke's own evidence is awkward. A confidential exhibit presented during June (2026-06) proceedings showed roughly 98% of the identified financial benefits from the grid improvement programme accrued to non-residential customers. A senior attorney for the state public staff cited the figure to argue the filing shifts costs onto residential ratepayers to subsidise commercial infrastructure.2
Duke's chief financial officer defended the revised return on equity request — cut from 10.95% to 10.48% in what he called "a recognition of affordability concerns" — as the minimum the company can accept without triggering a credit downgrade. A rating cut, he argued, would raise Duke's borrowing costs and ultimately push rates higher for all customers.2
That argument has limited purchase in public hearings. North Carolinians have been packing commission sessions to protest bills they say are already hard to absorb. The gap between who drives grid costs and who bears them has become the dominant political fact of the state's power sector, and commissioners signalled they were not ready to accept Duke's framing at face value.1,2
Construction costs are moving against utilities at the same time. A Lazard Levelized Cost of Energy+ analysis published on Monday (2026-07-13) found unsubsidized utility-scale solar costs rose 18% to $40–$98 per megawatt-hour, driven by tariffs, supply chain pressure, higher capital costs, and rising interest rates. Solar remains the cheapest new-build technology even at that range, but the upward shift limits the room utilities have to justify capital programmes at acceptable financing costs.3
The North Carolina commission's ruling on Duke's 11.6% request will be read closely by other utilities behind the $9.2 billion wave. Significant disallowances, or an order requiring data centres to bear a larger share of the grid costs they drive, would narrow the investment case for the infrastructure buildout that technology companies are counting on. Full approval near the requested amount would signal that regulators are willing to let residential bills absorb commercial load growth indefinitely — a position unlikely to hold as those bills keep climbing.2,4