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Connecticut's Attorney General and state agencies filed a complaint with the Federal Energy Regulatory Commission (FERC) demanding cuts to Eversource and Avangrid's profit margins, according to Utility Dive. The complaint argues that a new state law requiring these utilities to participate in ISO New England makes them ineligible for an extra 0.5% return on equity.

Last updated: 2026-06-13

TL;DR: Connecticut is challenging Eversource and Avangrid's extra profit margins at FERC, which could reduce transmission costs for electricity customers across Maine, New Hampshire, Massachusetts, and Rhode Island. While any savings would take time to appear on bills, this represents a significant push to lower regional electricity costs during peak summer demand season.

How Connecticut's FERC Challenge Affects Your Electric Bill

Connecticut's legal challenge targets the Regional Transmission Organization (RTO) adder that allows Eversource and Avangrid to earn an additional 0.5% return on equity for transmission investments. If successful, this reduction in utility profit margins would flow through to lower transmission costs for all ISO New England customers, not just Connecticut residents.

Transmission costs typically represent 8-12% of your total electric bill across New England states. A 0.5% reduction in the return on equity for major transmission owners like Eversource could translate to meaningful savings, especially for customers in Massachusetts, New Hampshire, Maine, and Rhode Island where these utilities operate extensive transmission networks.

The timing matters for summer 2026. Air conditioning demand drives up both energy costs and transmission usage during peak hours. Any reduction in transmission charges provides relief when your bill faces the most pressure from seasonal demand.

What Makes This Case Different from Past Rate Challenges

Connecticut's argument centers on a specific legal change rather than general rate complaints. The state passed legislation requiring utilities to participate in ISO New England's planning processes, which Connecticut argues eliminates the justification for the RTO adder that compensates utilities for regional coordination costs.

This creates a stronger legal foundation than typical rate cases. FERC previously approved the 0.5% adder based on utilities voluntarily participating in regional planning. If that participation becomes mandatory under state law, the extra compensation loses its rationale.

The Connecticut Attorney General's office has coordinated with state energy agencies to present a unified challenge, increasing the likelihood of FERC review. Similar coordination helped secure favorable rulings in past transmission rate cases across New England.

For consumers, this represents a shift from fighting individual rate increases to addressing the underlying profit structure that drives transmission costs. Success here could establish precedent for challenging similar adders in other states where utilities earn enhanced returns for regional participation.

Timeline for Potential Bill Relief Across New England

FERC complaint proceedings typically take 6-18 months from filing to final decision. Even if Connecticut wins, implementation would require additional time for utilities to adjust their rate structures and for those changes to flow through to customer bills.

The most realistic timeline for bill impact:

• 2026 Q3-Q4: FERC staff review and initial utility responses
• 2027 Q1-Q2: Potential FERC ruling on the complaint
• 2027 Q2-Q3: Implementation of any required rate changes
• 2027 Q4: First customer bill impacts from reduced transmission costs

During this period, your current electricity rates remain unchanged. The default service rates for Massachusetts utilities like Eversource ($0.15629/kWh) and National Grid ($0.15372/kWh) reflect existing transmission costs and won't immediately benefit from this challenge.

However, competitive suppliers often adjust their pricing more quickly than regulated rates when they anticipate cost changes. This creates opportunities for customers using Gatby's Autopilot platform to capture savings as market conditions shift.

How This Affects Competitive Electricity Shopping

Transmission cost reductions benefit all customers equally, regardless of whether you choose competitive supply or stick with default service. However, the timing and implementation create different opportunities for competitive shoppers versus default service customers.

Competitive suppliers typically build transmission cost projections into their pricing 6-12 months ahead. If FERC signals likely approval of Connecticut's challenge, suppliers may begin offering lower rates before the official implementation, anticipating reduced transmission expenses.

Default service rates change on fixed schedules - every six months for Massachusetts utilities, annually for others. These rates won't reflect transmission savings until the next procurement cycle after FERC's final ruling.

This timing difference creates a window where competitive rates could offer better value than default service, beyond the typical savings opportunities. Gatby continuously monitors these market dynamics and automatically switches customers to better plans when they become available.

The key advantage during regulatory transitions: automated monitoring captures opportunities that manual shopping misses. Rate changes happen gradually, and the best savings often appear between major procurement cycles when competitive suppliers adjust faster than regulated rates.

State-by-State Impact Analysis

Massachusetts faces the most direct impact since Eversource operates major transmission infrastructure serving over 1.4 million customers. The utility's transmission investments in the Greater Boston area and Western Massachusetts drive significant regional costs that flow through to all New England customers.

New Hampshire customers benefit from both direct Eversource transmission savings and reduced regional costs from Connecticut's challenge. With Eversource serving the southeastern portion of the state and Unitil covering additional territory, transmission cost reductions provide meaningful relief for the state's 650,000+ electricity customers.

Maine sees indirect benefits through reduced ISO New England regional transmission costs, even though Central Maine Power and Versant Power aren't directly targeted by Connecticut's complaint. Regional transmission planning costs are shared across all New England utilities, so any reduction in Eversource's allowed returns reduces the overall cost pool.

Rhode Island customers benefit through Rhode Island Energy's participation in regional transmission cost allocation. While the utility itself isn't targeted, the state's customers pay their share of regional transmission investments through ISO New England's cost-sharing mechanisms.

What You Can Do While Waiting for FERC Decision

Don't wait for potential transmission savings to optimize your electricity costs. Current market conditions offer immediate opportunities that dwarf the potential long-term benefits from Connecticut's FERC challenge.

Compare your current rate to default service benchmarks. If you're on Eversource default service in Massachusetts at $0.15629/kWh, competitive suppliers often offer rates 10-15% below this level during summer months when wholesale costs stabilize.

Consider the timing of any contract decisions. Fixed-rate plans starting in summer 2026 lock in current transmission costs, which could work in your favor if FERC approves rate reductions during your contract term. However, variable-rate plans would capture transmission savings more quickly once implemented.

Gatby's platform continuously monitors both market rates and regulatory developments, automatically switching customers to better plans when opportunities arise. This automation captures savings from both competitive market dynamics and regulatory changes like Connecticut's FERC challenge.

The New Hampshire Public Utilities Commission and other state regulators provide updates on major rate cases affecting their customers. Following these developments helps you understand when regulatory changes might impact your specific utility territory.

Regional Market Dynamics During Summer 2026

Summer electricity demand across New England creates both challenges and opportunities for customers monitoring the Connecticut FERC case. Peak cooling season drives up both energy and transmission costs, making any potential transmission savings more valuable.

ISO New England's summer capacity markets reflect tight supply conditions, with transmission constraints playing a larger role in regional pricing. Connecticut's challenge addresses the cost side of this equation, potentially providing relief even as demand-driven costs increase.

The regional nature of transmission planning means Connecticut's success benefits customers across state lines. New England's integrated grid shares transmission costs through ISO-NE's tariff structure, spreading both expenses and savings across all participating utilities.

Current wholesale electricity prices in New England average 15-20% higher than last summer due to natural gas supply constraints and increased cooling demand. Transmission cost reductions provide a partial offset to these market-driven increases, though energy commodity costs remain the larger driver of summer bill increases.

For customers in deregulated territories, this creates opportunities to lock in competitive rates that anticipate both higher summer energy costs and potential transmission savings. Comparing plans on Gatby is always free and helps identify the best available rates during this period of market volatility.

Long-Term Implications for New England Electricity Costs

Connecticut's FERC challenge represents a broader shift toward scrutinizing utility profit margins across regulated infrastructure investments. Success here could encourage similar challenges in other states where utilities earn enhanced returns for regional participation.

The precedent extends beyond Eversource and Avangrid. Other New England utilities with similar RTO adders might face comparable challenges if states demonstrate that regional participation requirements eliminate the justification for enhanced returns.

This regulatory pressure creates incentives for utilities to justify their profit margins more rigorously, potentially leading to more competitive transmission investment processes. Lower allowed returns could slow some transmission projects, but also reduce the cost burden on customers for necessary grid improvements.

For electricity customers, the long-term trend points toward greater scrutiny of utility costs and more aggressive state advocacy for customer interests. This regulatory environment benefits consumers through both direct rate impacts and increased competitive pressure on utility operations.

Written by Hash Manesia, Energy Market Analyst at Gatby. Hash Manesia covers deregulated electricity markets across Texas and the Northeast, helping consumers navigate plan selection, rate comparison, and energy policy changes.

Reviewed by the Gatby Editorial Team on 2026-06-13

Frequently Asked Questions

Will my electricity bill go down if Connecticut wins FERC case against Eversource?

Yes, but the impact will be gradual and relatively small compared to your total bill. If FERC approves Connecticut's challenge, transmission costs could decrease by a fraction of a percent across New England. Since transmission typically represents 8-12% of your total bill, the savings might amount to $2-5 per month for an average residential customer. The reduction would appear automatically on future bills once implemented, regardless of whether you choose competitive supply or default service. However, don't expect immediate relief - any FERC ruling wouldn't take effect until 2027 at the earliest, and implementation could take additional months.

Should I switch electricity suppliers now or wait for FERC decision?

Switch now if you can find better rates than your current plan. Potential transmission savings from Connecticut's FERC case are small and uncertain compared to immediate opportunities in competitive supply markets. For example, if you're paying Massachusetts default service rates of $0.15629/kWh with Eversource, competitive suppliers often offer rates 10-15% below this level. Those savings dwarf any potential transmission cost reductions from the FERC case. Additionally, transmission savings would benefit you regardless of your supplier choice, so there's no advantage to waiting. Gatby has 4.8/5 stars from 500+ independent reviews and can help you find better rates while automatically capturing any future regulatory savings.

How to file complaint about high Eversource rates in my state?

Contact your state's public utility commission to file formal rate complaints. In Massachusetts, file with the Department of Public Utilities online or by phone. New Hampshire customers should contact the NH Public Utilities Commission. Each state has specific procedures for customer complaints, including forms for billing disputes, service quality issues, and rate concerns. However, understand that utility delivery rates are regulated and approved through formal proceedings - individual complaints rarely change approved rates. For immediate relief from high electricity costs, consider switching to competitive supply rather than challenging regulated delivery charges. Your state regulator can also provide information about energy assistance programs and consumer protection resources.

Which electricity plans have lowest rates during Eversource FERC review?

Competitive variable-rate plans currently offer the lowest rates in most Eversource territories, typically 10-15% below default service rates. In Massachusetts, this means finding plans below Eversource's current default rate of $0.15629/kWh. However, specific rates change daily based on market conditions, so comparing current offers is essential. Fixed-rate plans provide budget certainty but may carry slight premiums during summer months when demand is high. The FERC review doesn't affect competitive supplier pricing directly, so focus on current market rates rather than waiting for potential transmission savings. Gatby's platform continuously monitors available rates across all competitive suppliers and automatically switches customers to better plans when they become available.

Am I eligible for energy assistance programs if Eversource rates stay high?

Most New England states offer energy assistance regardless of your electricity supplier choice. Massachusetts provides the Low Income Home Energy Assistance Program (LIHEAP) and discount rates through the Department of Housing and Community Development. New Hampshire offers similar programs through the Community Action Partnership. Eligibility typically depends on household income (usually 60% of state median income or below) rather than your specific utility or rate level. These programs can provide bill payment assistance, weatherization services, and crisis intervention during extreme weather. Contact your state's energy assistance office directly, as program availability and funding levels change seasonally. Additionally, many utilities offer their own hardship programs separate from state assistance - contact Eversource customer service to learn about payment plans and budget billing options.

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