ISO New England has again lowered its 10-year electricity demand forecast, offering another reminder that long-term load projections can change quickly. ISO New England is the regional grid operator serving six New England states, similar to PJM’s role in Ohio and much of the Mid-Atlantic. The grid operator now expects annual electricity consumption to grow about 9% by 2035, down from prior forecasts of 11% growth by 2034 and 17% growth by 2033. The change reflects more conservative assumptions around electric vehicle and heat pump adoption.

That matters far beyond New England. In Ohio and across the country, utilities and grid planners are using forecasts tied to electrification, data centers and economic development to justify major infrastructure spending that could affect customer bills for years.

“Forecasts should guide planning, not become a blank check for customer-funded utility investment,” said Lindsey Short, managing director of energy and advocacy services for the Ohio Manufacturers’ Association. “Before manufacturers and other customers are asked to pay for projects tied to uncertain future load, regulators should demand transparency, independent review and accountability.” 5/5/2026