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A Brattle Group report prepared for The Pew Charitable Trusts estimates that removing barriers to distributed energy resources could avoid $614 billion in U.S. power system costs through 2050. The modeled changes could add more than 400 GW of distributed capacity, reduce projected gas additions and lower average household electricity bills by $122 a year by 2050. These are modeled estimates, not guaranteed savings.
A report prepared by The Brattle Group for The Pew Charitable Trusts estimates that removing policy barriers to distributed energy resources could avoid $614 billion in U.S. power system costs through 2050. The November 5 analysis says expanded local solar, batteries and flexible electricity demand could help meet rising power needs while reducing reliance on new generation and easing household bills.
The report, titled The National Case for a More Distributed Power Grid: New Evidence on Affordability and Demand Growth, examines resources located near electricity users. These include distributed solar, battery energy storage and demand flexibility, such as managed electric-vehicle charging. Its estimates cover effects on both the wider power system and local distribution networks.
Under the report’s policy scenario, distributed energy resource capacity would increase by more than 400 gigawatts by 2050, more than quadrupling the modeled total. The authors say that would raise DERs’ share of U.S. installed capacity from 8% today to 18%, making them the fourth-largest resource in the capacity mix. The analysis estimates this expansion could avoid about 70 GW of projected net gas additions, or 22%, and shift roughly 105 GW of utility-scale storage capacity to the grid edge.
The report identifies three measures—incorporating DERs into distribution planning, lowering permitting costs and reforming interconnection—as capable of delivering an estimated $266 billion in avoided costs through 2050. That equals 43% of the report’s estimated national benefits. It also estimates average household electricity bills could be $122 lower per year by 2050, adjusted for inflation.
Potential Savings for Bills and Capacity
The estimate matters as utilities and regulators plan for rising electricity demand, including growth from data centers, electrification and other large users. If distributed resources can be connected and coordinated at scale, they may reduce the need for some new power plants and local network upgrades. The report’s figures suggest that choices about planning, permitting and interconnection could affect both system investment and customer costs over decades.
The authors estimate that roughly 80% of the identified value could be allocated among compensation for participating customers, lower rates for customers generally and possible utility incentives. That is a modeled allocation opportunity, not a guarantee that bills will fall by the same amount for every household. Actual outcomes would depend on implementation, local grid conditions, rate design and how the benefits are shared.
The report also models value beyond its headline cost estimate. In a scenario where load growth is below forecasts, greater DER reliance could reduce overbuilding costs by $33 billion from 2030 to 2040, about 40% of the modeled cost in that scenario. The finding points to a potential planning advantage: local resources can provide flexibility when demand forecasts change, although the analysis does not establish how much of that benefit will occur in practice.
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How the Report Models Grid Changes
The Brattle analysis builds on a Pew report published in April that set out six policy recommendations for accelerating DER adoption. The new study examines the modeled effects of three of those recommendations: including distributed resources in distribution-system planning, reducing permitting costs and changing interconnection processes. It combines long-term power system modeling with an assessment of opportunities to defer local distribution upgrades across 25 U.S. regions.
The report also considers emissions and decarbonization. Its authors say power-sector emissions reductions are projected to stall around 2035 without new policy intervention. In the modeled expanded-DER case, greater renewable integration produces a 3% cumulative reduction in power-sector carbon dioxide emissions over the study period. In a separate scenario requiring a carbon-free generation fleet by 2050, DER flexibility could offset around 175 GW of utility-scale capacity and cut the incremental cost of decarbonization by nearly 20%, or $45 billion, in that year.
Those figures come from different scenarios and should not be treated as a single forecast. The study’s quantified cost and emissions results are model outputs based on its assumptions about demand, technology, policy and grid development. The report says resilience and possible transmission benefits could add value, but it does not include them in the quantified estimates.
“Removing barriers to distributed energy resources could avoid an estimated $614 billion in U.S. power system costs through 2050.”
— The Brattle Group report, prepared for The Pew Charitable Trusts
What Could Change the Estimates
The $614 billion figure is an estimate from a modeled policy scenario. The supplied report summary does not provide the full set of assumptions, sensitivity results or a comparison of outcomes under every possible demand and technology path. Actual savings would depend on whether policymakers and regulators adopt the proposed changes and whether projects can connect and operate as modeled.
It is also unclear how the potential value would be divided among households with DERs, other ratepayers and utilities. The report estimates a possible $122 annual reduction in average household bills by 2050, but the summary does not specify how that average might vary across regions or customer groups. Nor does it quantify the additional resilience and transmission value it says could exist. The emissions and overbuilding figures refer to separate modeled cases, not assured nationwide results.
Policy Decisions Shape the Next Steps
The report is available from The Brattle Group. The next steps described in the analysis are policy and regulatory decisions on distribution planning, permitting and interconnection, alongside utility planning for expected demand. State and local rules, utility processes and grid constraints will shape whether more distributed solar, storage and flexible demand can be deployed.
Further assessment will be needed to compare the report’s modeled results with actual project uptake, grid investments and customer bills. The supplied source does not identify a specific federal or state decision date, implementation schedule or commitment to adopt the recommendations. Until those details emerge, the headline savings should be read as a conditional estimate rather than a forecast of guaranteed reductions.
Key Questions
What are distributed energy resources?
Distributed energy resources are power generation, storage or flexible demand located near electricity users. The report includes distributed solar, batteries and measures such as managed electric-vehicle charging.
How much could removing barriers save?
The Brattle Group report estimates $614 billion in avoided U.S. power system costs through 2050 under its modeled scenario. The figure is an estimate, not a guaranteed saving.
Could household electricity bills fall?
The report estimates an average reduction of $122 per household per year by 2050, adjusted for inflation. It does not mean every household would receive the same reduction.
Which policy changes does the report identify?
Three measures—including DERs in distribution planning, reducing permitting costs and reforming interconnection—are estimated to account for $266 billion in avoided costs through 2050.
Are the projected savings confirmed?
No. They are model-based estimates. Actual outcomes depend on policy adoption, project deployment, grid conditions, demand growth and how costs and benefits are allocated.
Source: energy-storage.news
