As electric vehicle adoption grows, so is demand for electricity. EVs bring new electricity sales and new revenue for utilities. When that additional revenue exceeds the incremental cost of serving EV load, EV customers contribute toward the fixed costs of the electric system, putting downward pressure on rates for all customers, including those who don’t drive an EV.
EV Drivers Are Contributing More Than It Costs to Serve Them
A national analysis by Synapse Energy Economics tracked EV charging costs and revenues nationwide between 2011 and 2021. EV drivers contributed $3.12 billion more in utility revenue than it cost to serve them. Even after accounting for utility spending on EV-specific programs, EVs still generated $2.44 billion more in revenue than costs over that decade.
That’s important because electric utilities have high fixed costs. Generation, transmission, and distribution infrastructure has to be built, maintained, and paid for regardless of how many kilowatt-hours are sold. When new electricity sales generate more revenue than the incremental cost of serving that demand, those additional customers contribute toward those fixed system costs.
Synapse found that EV revenues exceeded costs across every region included in its analysis.
Michigan Is Seeing the Same Effect
Michigan’s two largest electric utilities are seeing the same effect. Consumers Energy projects that EV adoption will create $755 million in downward rate pressure across its Michigan service territory through 2031. DTE’s latest Transportation Electrification Plan goes even further, projecting approximately $1.8 billion in long-term rate relief for its customers from its proposed 2027–2031 transportation electrification portfolio.
The utilities use different methodologies and time horizons, so the figures aren’t directly comparable. But both analyses reach the same basic conclusion: EV load can generate enough additional electricity revenue to more than offset the costs of serving it, putting downward pressure on rates.
That benefit doesn’t go only to EV owners. When EV customers contribute more to the system than it costs to serve their electricity demand, that value flows through the utility’s overall rate structure to other customers.
Thoughtful Charging Makes the Economics Even Better
The economics get stronger when EV charging happens at times when electricity demand is lower. A vehicle often sits parked for many hours. For example, a driver who gets home at 6 p.m. and needs a full battery by 7 a.m. doesn’t necessarily need to charge immediately. That gives utilities and customers an opportunity to shift charging to lower-demand periods.
Managed charging can help make that happen, reducing the cost of serving EV load while allowing utilities to make better use of existing infrastructure.
That flexibility is one of the biggest advantages EVs bring to the electric system, and it’s the focus of the next installment in this series.
This is the first installment in our series, EVs & the Grid: From New Demand to Grid Resource.