Unitil Completes Acquisition of Two New Hampshire Water Utilities
Unitil Corporation has finalized its purchase of Aquarion Water Company of NH and Abenaki Water Co. from the Aquarion Water Authority.
Unitil Corporation, the New Hampshire-based energy utility traded on the NYSE under the ticker UTL, has closed its acquisition of two water companies from the Aquarion Water Authority, marking a meaningful step in the firm's expansion beyond its traditional electricity and natural gas operations. The two acquired entities — Aquarion Water Company of New Hampshire, Inc. and Abenaki Water Co., Inc. — give Unitil a foothold in the state's regulated water sector, a market that has attracted growing interest from diversified utility operators seeking stable, rate-regulated revenue streams.
The deal's origins trace back to May 2025, when Unitil and the Aquarion Water Authority first announced a Stock Purchase Agreement. The agreement was subsequently amended to narrow its scope, with Unitil limiting its acquisition to the two New Hampshire companies rather than a broader portfolio. That kind of mid-process refinement is not unusual in regulated utility transactions, where regulatory review timelines and conditions often prompt parties to recalibrate deal structures before closing.
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Critical to the transaction's completion were approvals from both the New Hampshire and Maine Public Utilities Commissions — a procedural hurdle that underscores the multi-jurisdictional complexity even a relatively focused utility deal can carry. Regulatory sign-off from two state commissions signals that the acquisition met the public interest standards both states require before allowing a change in water system ownership.
For Unitil, which has historically concentrated on electric and gas distribution in New England, the move into water utility ownership reflects a broader industry trend of smaller regulated utilities diversifying their asset base. Water infrastructure carries long asset lives, predictable demand, and a regulatory framework that supports steady returns — characteristics that complement Unitil's existing business model and may offer investors an additional layer of earnings stability going forward.
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