For every $1 billion in transmission investments that is delayed, consumers lose between $150 million and $370 million in net benefits per year of delay, according to a study by Grid Strategies released Nov. 12.
“That’s a pretty impactful amount when it comes to this debate around affordability, and it speaks for the need to get more transmission built faster in order to lessen the impact on consumers,” WIRES Executive Director Larry Gasteiger said in an interview Nov. 14. WIRES commissioned the study.
The losses come from lower reliability, diminished access to lower-cost generation and the lack of efficiency from new transmission lines, the report says.
Grid Strategies analyzed eight regional transmission portfolios from ERCOT, MISO, NYISO and SPP. It extracted total reliability and economic benefits identified in each portfolio and converted them to annualized benefits and calculated annualized costs from the transmission planners’ assumptions.
Transmission projects face delays from factors including siting and permitting and other regulatory delays, Gasteiger said.
“There are supply chain issues that have developed, particularly over the last five to six years, where it just takes longer to get the items needed in order to build transmission,” Gasteiger said. “There’s been a lot of regulatory uncertainty, frankly, around transmission, in terms of what the rate of return is going to be, what the incentives are for transmission, and there’s no question that that ultimately impacts the timing on getting transmission built.”
When transmission owners do not know what the regulatory framework is going to be, that causes risks, which in turn leads to delays, he added.
A little regulatory uncertainty is baked into the system, and the industry is facing some as FERC undergoes a leadership shuffle now.
“We’re waiting to see how this new commission handles issues around affordability,” Gasteiger said. “And I think one of the factors that has to come into play is that building out more transmission can have some serious positive impacts associated with consumers, such as gaining access to cheaper, more affordable power sources, generation sources, better reliability and things of that nature.”
New Chair Laura Swett has participated in a cost allocation order already, denying a complaint from the Kentucky Public Service Commission and allowing American Electric Power’s tariff to spread the costs of supplemental projects in PJM across all its utilities in the market. (See FERC Rejects Kentucky Complaint Against AEP’s Tx Cost Allocation.)
One major issue the new commission will have to deal with is Order 1920 implementation, as the regions file their compliance filings with the planning and cost allocation reforms passed by FERC during the previous administration.
“It’s going to be interesting to see whether the commission affords a lot of flexibility in the regions, or do they want to try and use a much more standardized approach?” Gasteiger said. “I don’t know. I can’t predict where they will come out on that, but in a way, you almost have the feeling like that some of the issues that were dealt with in 1920 have been eclipsed to some extent, by focus on things like the ANOPR that just came out from DOE.”
The Advance Notice of Proposed Rulemaking asks FERC to assert jurisdiction over the interconnection of large loads, which are driving significant demand growth, often in regions that had seen effectively no real growth for decades.
“With load growth, the more customers you have signing on to the system, the more you can spread the costs out among those customers, so that winds up having the ability to kind of reduce costs generally, because you have more people paying for it,” Gasteiger said. “There are a lot of issues around getting access to cheaper power for all of those resources. And the administration’s made clear it is focused on the effort to help integrate AI and data centers, and the only way you’re really going to be able to do that is to have more transmission built as well.”
The report spends time discussing load growth, which it says has led to a growing consensus around the need for new large-scale transmission investment. FERC’s 2024 State of the Markets Report said that 1,000 miles of new lines were placed into service over the last year because of higher demand, an amount second only to projects aimed at reliability, it noted.
That trend is going to continue based on projects in the works, as NERC summarized in its 2024 Long-Term Reliability Assessment.
“The 2024 LRTA reports there are 28,275 miles of transmission (>100 kV) planned or under construction through 2034,” according to the Grid Strategies report. “This estimate is almost 10,000 miles higher than the 2023 LTRA 10-year projections and is well above the average of 18,900 miles over the past five years of NERC’s LTRA reporting.”