S 684 New Jersey Senate · 2026-2027 Regular Session

Establishes thermal energy network pilot program for gas public utilities.*

S 684 establishes a three-year pilot program in New Jersey allowing gas public utilities to replace aging natural gas pipelines with geothermal energy infrastructure (like underground heating/cooling systems) and recover the project costs through customer utility rates. Gas utilities must submit detailed infrastructure plans to the Board of Public Utilities for approval, which will evaluate project costs, benefits like reduced emissions, and impacts on ratepayers. The program requires annual reports to the Governor and Legislature, with a final assessment on whether to make it permanent. This directly affects gas utilities operating in New Jersey, aiming to transition infrastructure toward renewable geothermal energy.
Bill status in committee 1 of 4 stages cleared
Introduction
Jan 2026
Committee Review
Floor Vote
Governor
Introduced Jan 13, 2026 Last action Feb 12, 2026
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What changed between versions

Introduced Reprint · 8 edits
MODERATE
The bill was substantially broadened from a geothermal-only pilot program to a thermal energy network pilot program that includes non-geothermal renewable heat sources such as redistributed waste heat, surface or underground water, and wastewater. The program duration increased from three to four years, the board must approve up to one project in each of four state regions, review criteria expanded from six to eleven factors including equity and workforce considerations, and a new legal protection was added so utilities providing approved thermal energy service are not required to also provide natural gas to those customers.
Scope change
The bill's scope expanded significantly from geothermal energy only to all renewable thermal energy sources including redistributed waste heat, surface or underground water, wastewater, and other heat sources. The geographic scope was formalized with four defined regions each eligible for one project. The program now explicitly covers new developments (not just replacement of aging pipelines) and adds a legal exemption from the requirement to provide natural gas service where thermal energy is provided instead.
SCOPE

The program was renamed from a 'geothermal energy pilot program' to a 'thermal energy network pilot program.' The definition of thermal energy infrastructure now includes redistributed thermal waste heat, surface or underground water, wastewater, and other heat sources in addition to geothermal energy. The project definition changed from replacing aging gas pipelines to establishing thermal networks in lieu of new or existing gas infrastructure for new or existing developments.

TIMELINE

The pilot program duration was extended from three years to four years. The board may extend the term at its discretion. The implementation deadline for the board's order changed from 60 days to 90 days after enactment. The effective date changed from the first day of the sixth month after enactment (with anticipatory action allowed) to immediately upon enactment.

REQUIREMENT

The board must approve a maximum of one project in each of four defined regions: northern (Bergen, Essex, Hudson, Morris, Passaic, Sussex, Warren), central (Hunterdon, Mercer, Middlesex, Somerset, Union), southern (Burlington, Camden, Cumberland, Gloucester, Salem), and coastal (Atlantic, Cape May, Monmouth, Ocean). The board may establish application periods and may approve, deny, request modifications to, or partially approve/deny plans.

Review criteria expanded from six to eleven factors. New criteria include: lifecycle cost (replacing simple 'cost'), energy capacity deferment, jobs including use of existing gas utility workforce, extent projects serve low-to-moderate-income households and overburdened communities, degree projects target highly inefficient buildings, potential for cost-effective retrofits or thermal waste heat tie-ins, non-ratepayer funding sources, and degree projects target old or leaking gas infrastructure or present an alternative to gas expansion.

ELIGIBILITY

A new provision states that a gas public utility providing safe, proper, and adequate thermal energy distribution via an approved pilot project shall not be deemed in violation of R.S.48:3-3 for refusing to also provide natural gas distribution services to those customers.

FISCAL

The board and gas public utilities may now establish a new tariff for the sale and delivery of thermal energy to participating customers. The purpose of the program changed from promoting adoption to demonstrating the benefits and cost of thermal energy networks as a means for supplying space or water conditioning.

ENFORCEMENT

The reporting requirement changed from annual reports during the pilot period to a single report no later than six months after expiration, which must be published on the board's website. The final determination now includes three options: extend the pilot, convert to a permanent program, or recommend that New Jersey allow distribution of geothermal energy as a regulated public utility service.

DEFINITION

The definition of 'geothermal energy' removed the word 'renewable.' A new definition of 'thermal energy network' was added, describing a project supplying heating or cooling to multiple buildings via underground piping containing fluids that, with heat pumps, exchange geothermal or other renewable thermal energy. The R.S.48:2-13 amendment now references 'thermal energy distribution' instead of 'geothermal energy,' and new carve-outs were added so the board's existing authority over cogenerator/district heating thermal services and sewage effluent cooling exemptions do not apply to this bill's thermal energy distribution.

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Full legislative history

Actions timeline

Total actions
3
Key actions
0
Committee
1
Feb 12, 2026
Committee
Referred to Senate Budget and Appropriations Committee
upper
Jan 13, 2026
Introduced
Introduced in the Senate, Referred to Senate Environment and Energy Committee
upper
2 primary · 0 co-sponsors

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