Electric demand is set to grow significantly over the next decade, but the topline numbers only tell part of the story, according to ICF’s findings in the new report, Electricity Demand Growth: How Will the Grid Keep Pace?
By the numbers:
- Total U.S. electricity demand will rise 21% by 2030 and 39% by 2035
- Peak demand will increase 14% by 2030 and 25% by 2035
- The grid will add 445 GW of new generation capacity between 2026 and 2030
- Only 68 GW will come online in 2026
But here’s the bigger story.
The picture looks very different depending on what part of the country you’re looking.
Right now the grid overall has 26 GW (3% of total capacity) of excess generating capacity above minimum resource adequacy requirements. That’s not a lot of wiggle room, but it’s something.
Hone in on particular territories — like PJM and ERCOT — and it’s more grim. There is no headroom to support new demand beyond next year. And SERC and NYISO could face similar limitations within the next few years, says the report.
As a result, the next phase of demand growth will be defined less by how much demand rises and more by the power systems ability to deliver.
“High demand forecasts remain a major concern for energy stakeholders, but the more important questions are now: Where can new demand be served? At what scale? And how quickly?’ says the report.
ICF forecasts that the US will add 445 GW by 2030, with only 68 GW expected in 2026. This creates pressure for rapid installations later in the decade to keep pace. ICF also notes that not every new megawatt contributes equally when the grid is under stress.
“Some resources provide less value during peak periods, so the effective capacity added to support reliability is much lower than the headline total. On a peak basis, the 445 GW of planned additions contributes only about 191 GW,” says the report.
The ICF demand growth report also points to a mismatch in the timing for building transmission and distribution versus generation: “New loads are seeking service now, while the generation and grid infrastructure required to serve them may take years to come online.”
While not a substitute for steel in the ground, demand-side programs can help fill the gap, says the report: “They are among the fastest and most cost-effective tools utilities can use while larger infrastructure solutions are built, and they can play a long-term complementary role.”
ICF identifies where pressure is likely to emerge first and what it will take to balance supply and demand.
