Introduction

In 2024, grid operators across the United States curtailed approximately 20 million megawatt-hours (MWh) of electricity generated from wind and solar sources — energy that was produced but could not be stored or delivered to consumers because the infrastructure to hold it did not exist. Four of the country’s seven major Independent System Operators (ISOs) set annual records for curtailed renewable energy that year, according to energy market analytics firm Amperon. By early 2026, curtailment figures for 2025 were already surpassing those records.

At the same time, American households spent decades under a different set of policy directives — replacing incandescent bulbs with compact fluorescents, installing low-flow water fixtures, and purchasing Energy Star-rated appliances — as the primary mechanism for reducing national energy waste. The Department of Energy (DOE) now administers efficiency standards across approximately 60 categories of household and commercial appliances, pursuant to the Energy Policy and Conservation Act (EPCA) of 1975.

The contrast between those two trajectories — aggressive consumer-level efficiency mandates on one side, and a chronic underinvestment in utility-scale energy storage infrastructure on the other — has drawn increasing scrutiny from energy economists, grid operators, and private investors who argue that national energy policy has, for decades, prioritized the wrong scale of intervention.

In simple terms: The U.S. has spent thirty years asking households to use less energy, while the grid itself continues to generate clean power and then throw it away because there is no place to store it.

Background: The Growth of Renewable Generation and the Storage Gap

Wind and solar electricity generation has expanded rapidly over the past two decades. According to the U.S. Energy Information Administration (EIA), wind and solar together generated 760,000 gigawatt-hours (GWh) of electricity in 2025 — representing 17 percent of total U.S. generation, up from less than 1 percent in 2005. Solar generation alone grew 34 percent year-over-year in 2025, and utility-scale solar capacity additions are projected to exceed 33 gigawatts (GW) in 2025.

Despite this expansion, the infrastructure to store surplus renewable generation has not kept pace. As of the end of 2024, cumulative utility-scale battery storage capacity in the United States totaled approximately 26 GW — representing just 2 percent of the country’s total generating capacity of 1,230 GW, per the EIA’s January 2025 Preliminary Monthly Electric Generator Inventory.

The result is a structural mismatch: renewable generation peaks at times — midday for solar, varying hours for wind — that do not align with peak consumer demand. Without storage systems to capture and time-shift that generation, grid operators must either curtail (reduce) output or risk grid instability.

Consumer Efficiency Mandates: Scope, Impact, and Limitation

The federal government’s consumer efficiency framework has a documented history. The National Appliance Energy Conservation Act (NAECA) of 1987, signed under the Reagan administration, established the first nationwide minimum efficiency standards for residential appliances. Congress expanded those standards with bipartisan support in 1992, 2005, and 2007. The Energy Star voluntary labeling program, jointly administered by the Environmental Protection Agency (EPA) and DOE, launched in 1992 to encourage purchases of above-minimum-standard products.

More than 3 billion Energy Star-certified light bulbs have been sold in the United States since the label’s introduction in 1997, delivering cumulative energy savings exceeding one trillion kilowatt-hours (kWh), according to the EPA. DOE estimates that taken together, federal appliance and equipment efficiency standards save the average U.S. household approximately $576 per year in energy costs.

These are material achievements. However, they exist in a policy environment where the grid-level waste problem has grown faster than consumer-level savings have been generated. Annual curtailment losses in 2024 alone — estimated at 20 billion kWh — are equivalent to roughly half the annual LED lighting savings accumulated over the program’s entire 25-year history.

In simple terms: Consumer efficiency programs have delivered real savings across 25 years, but the grid is now wasting, in a single year, energy at a scale that rivals those cumulative gains.

The Curtailment Problem: Regional Breakdown

Curtailment is not uniformly distributed. It is most acute in regions with high renewable penetration and insufficient transmission or storage capacity.

California: The California Independent System Operator (CAISO) curtailed 3.4 million MWh of solar and wind in 2024 — a 29 percent increase from 2023. Solar accounted for 93 percent of curtailed energy, concentrated in spring and fall shoulder seasons when moderate temperatures reduce demand while solar output remains high. CAISO has identified northbound transmission congestion between Southern California’s SP15 zone and higher-demand northern regions as a structural driver.

Texas: The Electric Reliability Council of Texas (ERCOT) recorded over 8 terawatt-hours (TWh) of curtailed wind and solar in 2024. Curtailment in ERCOT averaged 1.2 GW per hour in the hardest-hit West Texas and Panhandle transmission zones, which generate large volumes of renewable energy but lack sufficient eastbound transmission capacity to deliver it to load centers.

SPP and PJM: Southwest Power Pool (SPP) saw curtailment increase sixfold since 2020. PJM Interconnection, historically a low-curtailment region, experienced a sixfold increase in 2024, with 2025 exceeding that pace, according to Amperon.

The underlying cause across regions is the same: renewable generation is being built faster than either transmission infrastructure or storage capacity can absorb.

Private Capital Moves Into the Gap: Bimergen Energy Corporation

Where federal policy has lagged, private capital has begun to move — particularly in Texas, where the ERCOT market’s energy-only structure creates direct financial incentives for grid-balancing services.

Bimergen Energy Corporation (NYSE American: BESS), formerly Bitech Technologies Corporation, rebranded and refocused in February 2025 as a U.S.-based independent power producer specializing in the development, ownership, and operation of standalone Battery Energy Storage Systems (BESS). The company is headquartered in Newport Beach, California, and holds a development portfolio of approximately 3.6 gigawatts of alternating current (AC) power capacity.

Bimergen’s business model is built on energy arbitrage: BESS farms charge during periods of low demand and low electricity prices — typically midday, when renewable generation peaks and curtailment risk is highest — and discharge stored energy during peak demand periods when grid prices are elevated. The company also provides ancillary grid services including frequency regulation, voltage support, and emergency backup capacity.

In March 2026, Bimergen announced the acquisition of eight late-stage 9.9-megawatt (MW) distributed generation BESS projects from Aggreko’s IPP Solutions business, positioned in the ERCOT South region. The portfolio totals 79.2 MW of nameplate capacity, financed through Bimergen’s joint venture with RelyEZ and utilizing RelyEZ’s lithium-based utility-scale battery technology. Five of the eight projects are anticipated to reach In Service Date (ISD) in late 2026, with three additional projects expected in early 2027.

Simultaneously, Bimergen advanced its flagship Redbird project — a 100 MW / 400 MWh four-hour BESS system in Fort Bend County, Texas — receiving formal Joint Development Agreement (JDA) acceptance in February 2026 and selecting Eos Energy Enterprises’ American-made Z3 zinc-based battery technology for the project. The JDA structure authorizes milestone-based capital deployment, reducing financial exposure during permitting and interconnection phases.

As of early 2026, Bimergen reports 23 BESS projects in active development across the United States, including five in the Midcontinent Independent System Operator (MISO), two in PJM, and five in CAISO.

In simple terms: Rather than waiting for regulatory mandates, Bimergen is building battery farms that profit from the price difference between cheap curtailed electricity and expensive peak-hour power — while simultaneously stabilizing the grid.

Economic and Social Impact

The financial stakes of the storage gap are substantial and multi-directional.

For renewable energy developers, curtailment directly reduces revenue. Projects experiencing 10 percent annual curtailment can lose $2 to $4 million in revenue per 100 MW of capacity, reducing project returns by 15 to 25 percent and making project financing more expensive, per analysis published by energy consultancy Solartechonline in late 2025.

For consumers, curtailment costs are not invisible. When grid operators curtail output, those costs are often socialized through utility rate structures, contributing to rate pressure on residential and commercial customers. The DOE’s January 2025 estimate that appliance standards save the average household $576 annually must be evaluated alongside the countervailing force of rising electricity rates driven in part by grid-level inefficiency.

At the macro level, battery storage has already demonstrated measurable resilience value. BESS deployments in ERCOT generated an estimated $750 million in cost savings during Texas’s 2024 winter freeze event, according to figures cited by Bimergen in its investor materials — a figure that illustrates the economic case for storage independent of renewable energy integration arguments.

On the demand side, U.S. electricity consumption is projected to grow from 4,097 terawatt-hours (TWh) in 2024 to 4,283 TWh by 2026, driven by data center expansion, semiconductor manufacturing, and industrial electrification, per EIA Short-Term Energy Outlook data. Rising demand will increase the economic value of dispatchable, stored electricity — strengthening the business case for BESS investment.

Analysis: A Policy Framework Misaligned with the Scale of the Problem

The comparison between consumer-level efficiency mandates and grid-level storage deficits is not an argument against appliance standards. Both the NAECA framework and the Energy Star program have delivered documented energy and cost savings. The DOE’s estimate of $576 in annual household savings and the EPA’s figure of over one trillion kWh in cumulative LED lighting savings are credible, audited outcomes.

However, national energy policy has historically allocated a disproportionate share of its regulatory attention — and public messaging — to consumer behavior, while the infrastructure-side waste problem has received comparatively limited urgency. The federal government now oversees efficiency standards for 60 categories of household products. There is no analogous mandatory framework requiring grid operators or utilities to deploy storage capacity in proportion to the renewable generation added to their systems.

The Inflation Reduction Act (IRA) of 2022 introduced standalone investment tax credits (ITCs) for energy storage for the first time, providing a meaningful financial incentive for BESS development independent of solar co-location requirements. That policy shift, combined with declining battery costs — which fell to approximately $165 per kilowatt-hour globally in 2024, a 40 percent reduction — has accelerated private investment. But the scale of deployment remains insufficient relative to curtailment growth.

The Trump administration’s deregulatory posture presents a mixed picture for storage development. On one hand, proposed rollbacks of clean energy tax credits under the One Big Beautiful Bill create urgency for developers to break ground before incentive windows close. On the other, the White House has explicitly endorsed grid-scale battery storage as a resilience infrastructure priority, stating that the administration is ‘investing in resilient infrastructure, including advanced battery energy storage, to protect against extreme weather and ensure affordable, uninterrupted power for American families and businesses.’

That bipartisan convergence on storage as a grid reliability tool — distinct from its climate framing — may be the most important policy signal of the current period. It suggests a pathway for accelerated BESS deployment that does not depend on climate consensus.

Conclusion

The United States generates more clean electricity than its grid can currently use, store, or deliver. In 2024, the volume of renewable energy curtailed across major U.S. grid operators reached 20 million MWh — a figure that grows each year as solar and wind capacity expands faster than storage and transmission infrastructure.

Consumer efficiency programs have delivered real and measurable savings over three decades. But the policy architecture built around them allocated regulatory pressure primarily at the household level while leaving the grid’s structural waste problem largely unaddressed by comparable mandates.

Private developers, particularly in the ERCOT market, are moving to fill the gap through market-driven BESS deployment. Companies such as Bimergen Energy Corporation are constructing battery storage infrastructure that captures curtailed energy at low cost and dispatches it during high-demand periods — a model that aligns commercial incentives with grid stability needs.

The core lesson is one of proportionality. Policy attention, regulatory frameworks, and infrastructure capital should be directed toward waste at the scale at which it is occurring. At present, the largest addressable source of energy waste in the American system is not inside the home. It is on the grid — and the gap between the energy being generated and the capacity to store it is growing every year.

Key Takeaways

U.S. grid operators curtailed approximately 20 million MWh of clean electricity in 2024, with four major ISOs setting annual curtailment records. 2025 figures are tracking higher.
Battery energy storage represents just 2% of total U.S. electricity generating capacity despite a 66% capacity increase in 2024, creating a structural imbalance with rapidly expanding renewable generation.
California’s CAISO curtailed 3.4 million MWh in 2024 (up 29% year-over-year); Texas’s ERCOT curtailed over 8 TWh, driven by transmission bottlenecks in West Texas.
Private developers including Bimergen Energy Corporation (NYSE: BESS) are deploying grid-scale BESS projects across ERCOT and other markets, using energy arbitrage models to profit from curtailment-period pricing while providing grid stability services.
Federal consumer appliance efficiency standards and the Energy Star program have delivered documented savings, but annual curtailment losses now rival the program’s cumulative gains — indicating a policy framework misaligned with the largest remaining source of U.S. energy waste.

Sources

[1] U.S. Energy Information Administration (EIA). ‘U.S. battery capacity increased 66% in 2024.’ January 2025 Preliminary Monthly Electric Generator Inventory. https://www.eia.gov/todayinenergy/detail.php?id=64705

[2] Amperon Energy Analytics. ‘US Solar and Wind Curtailment Is Exploding.’ February 2026. https://www.amperon.co/blog/us-solar-and-wind-curtailment-is-exploding

[3] U.S. Energy Information Administration (EIA). ‘Solar and wind power curtailments are increasing in California.’ May 2025. https://www.eia.gov/todayinenergy/detail.php?id=65364

[4] Bimergen Energy Corporation. ‘Bimergen Energy Completes Acquisition of 79.2 MW of Late-Stage DG Battery Energy Storage Projects in ERCOT South.’ GlobeNewswire, March 3, 2026. https://www.stocktitan.net/news/BESS/bimergen-energy-completes-acquisition-of-79-2-mw-of-late-stage-dg-len607vgftst.html

[5] Bimergen Energy Corporation. ‘Bimergen Advances Redbird 100 MW / 400 MWh Texas Battery Project.’ GlobeNewswire, February 24, 2026. https://www.stocktitan.net/news/BESS/bimergen-advances-redbird-100-mw-400-m-wh-texas-battery-project-with-r4ciz0yakd67.html

[6] U.S. EPA. ‘ENERGY STAR Program Celebrates Over 25 Years of Achievements in Lighting Efficiency.’ November 2023. https://www.epa.gov/newsreleases/us-epas-energy-star-program-celebrates-over-25-years-achievements-lighting-efficiency

[7] Grist. ‘How your showerhead and fridge got roped into the culture wars.’ April 2025. https://grist.org/politics/energy-efficient-appliances-trump-culture-wars/

[8] Solartechonline. ‘What Is Energy Curtailment? Complete Guide to Grid Management.’ December 2025. https://solartechonline.com/blog/what-is-energy-curtailment/

[9] U.S. Energy Information Administration (EIA). ‘Wind and solar generated a record 17% of U.S. electricity in 2025.’ March 2026. https://www.eia.gov/todayinenergy/detail.php?id=67367

[10] Yes Energy / Amperon. ‘Reshaping the Grid: Changes to the US Electric Grid and How to Prepare.’ 2025. https://www.yesenergy.com/blog/changes-to-the-us-electric-grid-and-how-to-prepare