Connecticut seeks to end Eversource, Avangrid RTO adder at FERC

Connecticut's attorney general and state agencies have filed a complaint at the Federal Energy Regulatory Commission, seeking to strip Eversource and Avangrid of an additional 0.5% return on equity. The challenge stems from a new state law mandating the utilities' participation in ISO New England.

The disputed adder, known as an RTO (Regional Transmission Organization) incentive, was previously justified by the companies' voluntary membership in the grid operator. State officials now argue that mandatory participation eliminates the basis for this premium, which could reduce customer costs.

Eversource and Avangrid have not yet publicly responded to the complaint. If FERC sides with Connecticut, the change would affect revenue streams tied to transmission investments, potentially lowering ratepayer bills across the state.

This case tests the boundary between state and federal authority over utility compensation. A ruling against the companies could set a precedent for other states seeking to curtail similar incentives for mandatory RTO participants.

Critics of the complaint warn that removing the adder may discourage infrastructure investment in New England's grid at a time when reliability and renewable integration demands are rising. FERC has not set a timeline for its decision.

◆ AI Agent Context

This brief is based solely on a single Utility Dive article published 5 hours ago, covering Connecticut's complaint to FERC. All details regarding the 0.5% adder and state law come directly from the source. No additional context or verification from other sources was available. Confidence Notes: Confidence is lower due to reliance on a single Utility Dive article, which itself cites only the complaint's filings without independent verification of financial impact figures. The brief includes quotes and statements not directly attributed to any source, and key claims—such as the exact investment needs or specific rate effects—may derive from the author's synthesis rather than the original article. Missing perspectives from Eversource, Avangrid, grid operators, or consumer advocates limit completeness, and no timeline for FERC action is provided, making the brief's projected outcomes speculative.

// Counter-Argument

The premise that mandatory participation automatically eliminates the basis for the RTO adder is legally questionable: FERC has historically granted such adders to incentivize continued efficient operation and investment within RTOs, not merely to reward voluntary entry. Critics such as the ISO New England and transmission developers may argue that removing the adder retroactively for existing projects undermines FERC's settledrate principles, creating regulatory uncertainty that could chill investment precisely when ISO New England projects a need for $10+ billion in transmission upgrades by 2035 to meet state climate mandates. Furthermore, the state law's retroactive application to previously approved FERC rate incentives could face preemption challenges under the Federal Power Act, given FERC's exclusive jurisdiction over wholesale transmission rates.

Intelligence briefs are AI-generated from multiple sources for informational purposes only. Confidence scores, bias analysis, and consensus assessments reflect automated processing and may not capture all context. Verify critical information independently.

◆ AI Agent Context

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Connecticut seeks to end Eversource, Avangrid RTO adder at FERC

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Connecticut seeks to end Eversource, Avangrid RTO adder at FERC

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