APPROVED CHAPTER
JUNE 27, 2025 430
BY GOVERNOR PUBLIC LAW
STATE OF MAINE
_____
IN THE YEAR OF OUR LORD
TWO THOUSAND TWENTY-FIVE
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H.P. 1188 - L.D. 1777
An Act to Reduce Costs and Increase Customer Protections for the State's
Net Energy Billing Programs
Be it enacted by the People of the State of Maine as follows:
Sec. 1. 35-A MRSA §3209-A, sub-§2-A is enacted to read:
2-A. Billing term length. An amendment, revision or reissuance of a net energy
billing agreement made after June 1, 2025 may not include a delivery period end date that
is later than the end date provided for in the agreement that is subject to the amendment,
revision or reissuance.
Sec. 2. 35-A MRSA §3209-A, sub-§10 is enacted to read:
10. Applicability; net energy billing agreement. After December 31, 2025, the
commission may not allow a transmission and distribution utility to enter into a net energy
billing agreement with a distributed generation resource that is interconnected or planned
to be interconnected to the distribution grid on the utility side of a customer's utility meter.
Sec. 3. 35-A MRSA §3209-A, sub-§11 is enacted to read:
11. Distributed energy resource program. Notwithstanding any provision of this
section to the contrary, after December 31, 2025, the commission may not allow a
transmission and distribution utility to enter into a net energy billing agreement with a
distributed generation resource that is interconnected or planned to be interconnected to the
distribution grid on the utility side of a customer's utility meter.
Sec. 4. 35-A MRSA §3209-B, sub-§5, as amended by PL 2021, c. 659, §19, is
further amended to read:
5. Tariff rate; bill credits. The commission shall establish by rule tariff rates for
customers participating in the program. The initial tariff rate must be established no later
than December 1, 2019.
A. The tariff rate for a customer participating in net energy billing with a distributed
generation resource described in this paragraph, until December 31, 2025, must equal
the standard-offer service rate established under section 3212 that is applicable to the
customer receiving the credit plus 75% of the effective transmission and distribution
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rate for the rate class that includes the smallest commercial customers of the investor-
owned transmission and distribution utility. The tariff rate under this paragraph applies
to net energy billing with a distributed generation resource:
(1) With a nameplate capacity of greater than one megawatt if:
(a) The entity developing the distributed generation resource certifies by
affidavit with accompanying documentation to the commission that the entity,
before September 1, 2022, commenced on-site physical work of a significant
nature on the distributed generation resource and the entity has made and will
continue to make continuous on-site construction efforts to advance toward
completion of the distributed generation resource. For the purpose of this
paragraph, continuous on-site construction efforts include, but are not limited
to, in the context of a solar facility, the continuous installation of racks or other
structures to affix photovoltaic panels, collectors or solar cells to a site. The
commission may share information contained in the affidavit submitted in
accordance with this paragraph with a transmission and distribution utility, as
necessary, to verify a distributed generation resource's compliance with this
section. In administering this subsection, the commission may adopt rules
including, but not limited to, requiring the entity that submits a sworn affidavit
under this subparagraph to provide updated documentation to the commission
after submission of the affidavit; or
(b) The distributed generation resource is collocated with a net energy billing
customer that is or net energy billing customers that are subscribed to at least
50% of the facility's output; or
(2) With a nameplate capacity of one megawatt or less.
After December 31, 2025, the tariff rate must be calculated in accordance with
paragraph A-2.
A-1. The tariff rate for a customer participating in net energy billing under this section
with a distributed generation resource not governed by paragraph A must:
(1) In 2022, equal the standard-offer service rate established pursuant to section
3212 that was applicable to the rate class of the customer receiving the credit on
December 31, 2020 plus 75% of the effective transmission and distribution rate
that was in effect on December 31, 2020 for the rate class that includes the smallest
commercial customers of the investor-owned transmission and distribution utility;
and
(2) Increase by 2.25% on January 1st of each subsequent year, beginning January
1, 2023.
A-2. Beginning January 1, 2026, the commission shall establish the tariff rate for a
customer participating in net energy billing under this section with a distributed
generation resource described in paragraph A in accordance with this paragraph.
(1) For a distributed generation resource with a nameplate capacity of 3 megawatts
or more and less than 5 megawatts, the tariff rate must:
(a) Equal the tariff rate calculated under paragraph A-1 applicable in 2026;
and
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 (b) Increase by 2.25% on January 1st of each year, beginning January 1, 2027.
(2) For a distributed generation resource with a nameplate capacity of less than 3
megawatts, the tariff rate must:
(a) Equal the tariff rate established by the commission pursuant to paragraph
A that was applicable in 2025 to the rate class of the customer receiving the
credit; and
(b) Increase by 2.25% on January 1st of each year, beginning January 1, 2027.
B. A customer participating in the program must receive for electricity delivered to
the electric grid from a distributed generation resource in which the customer has a
financial interest a bill credit based on the tariff rate to apply against the costs of
electricity delivered to the customer by the investor‑owned transmission and
distribution utility.
C. A bill credit under the program as described in paragraph B may be applied to any
portion of a customer's electricity bill. Credits that remain unused at the end of any
billing period may be carried forward for up to one year from the end of that billing
period.
D. A customer participating in the program who remains eligible to participate in the
program must be allowed to receive a bill credit based on the tariff rate for a period of
no less than 20 years from the date of first receiving the credit.
The commission shall publish the tariff rates established in accordance with this subsection
on its publicly accessible website.
Sec. 5. 35-A MRSA §3209-B, sub-§7, as amended by PL 2023, c. 411, §3, is
further amended to read:
7. Applicability. The applicability of this section is limited by the requirements of
section 3209‑A, subsection 7 and subsection 9 subsections 7, 9 and 10.
Sec. 6. 35-A MRSA §3209-B, sub-§9 is enacted to read:
9. Distributed energy resource program. Notwithstanding any provision of this
section to the contrary, after December 31, 2025, the commission may not allow a
transmission and distribution utility to enter into a net energy billing agreement with a
distributed generation resource that is interconnected or planned to be interconnected to the
distribution grid on the utility side of a customer's utility meter.
Sec. 7. 35-A MRSA §3209-D, as enacted by PL 2023, c. 411, §6, is repealed.
Sec. 8. 35-A MRSA §3209-E, sub-§1, ¶A, as enacted by PL 2023, c. 411, §7, is
amended to read:
A. "Distributed generation resource" has the same meaning as in section 3209‑D,
subsection 1, paragraph A. means an electric generating facility that uses a renewable
fuel or technology under section 3210, subsection 2, paragraph B‑3, is located in the
service territory of a transmission and distribution utility in the State and:
(1) Has met or is reasonably likely to meet the requirements of section 3209‑A,
subsection 7, paragraph E, as determined by the commission; or
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 (2) Has a nameplate capacity of at least one megawatt and not more than 2
megawatts and:
(a) Is a member of a cluster study conducted by the transmission and
distribution utility with which the distributed generation resource is seeking to
interconnect; or
(b) Is likely to receive required transmission approval from the New England
independent system operator on or before April 30, 2024.
Sec. 9. 35-A MRSA §3209-F is enacted to read:
§3209-F. Net energy billing project charge for certain distributed generation projects
1. Net energy billing project charge defined. As used in this section, "net energy
billing project charge" means a monthly fee determined by the commission by rule in
accordance with this section that a transmission and distribution utility must use to offset
distribution costs associated with net energy billing arrangements under sections 3209-A
and 3209-B that would otherwise be paid by ratepayers, as determined by the commission.
2. Net energy billing project charge; applicability. Except as provided in subsection
5, the commission shall require a transmission and distribution utility to assess each
distributed generation resource participating in net energy billing with a shared financial
interest customer in accordance with section 3209-A, subsection 3. The commission shall
adopt rules to determine the net energy billing project charges applicable to distributed
generation resources described in subsection 3 and establish a process by which a
transmission and distribution utility must apply net energy billing project charges against
costs associated with net energy billing.
3. Initial net energy billing project charge. Beginning January 1, 2026, the initial
monthly net energy billing project charge established by the commission must be:
A. For a distributed generation resource with a nameplate capacity of 3 megawatts or
more and less than 5 megawatts, $6.00 multiplied by the nameplate capacity of the
distributed generation resource in kilowatts;
B. For a distributed generation resource with a nameplate capacity of one megawatt or
more and less than 3 megawatts, $2.80 multiplied by the nameplate capacity of the
distributed generation resource in kilowatts; and
C. For a distributed generation resource with a nameplate capacity of less than one
megawatt, zero.
4. Adjustment of net energy billing project charge; compensation. The commission
shall periodically by rule increase the initial net energy billing project charge to account
for increases in transmission and distribution rates. Compensation to a distributed
generation resource related to transmission and distribution rate credits may not increase
by more than 2.25% per year.
5. Exceptions. A distributed generation resource is exempt from the net energy billing
project charge established in this section if the distributed generation resource demonstrates
in a manner satisfactory to the commission that the distributed generation resource is:
A. Wholly owned by the customer or customers receiving the net energy billing credits
associated with the output of the distributed generation resource; or
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 B. Wholly owned by a cooperative corporation organized under Title 13, chapter 85.
6. Rules. The commission shall adopt rules to implement this section. Rules adopted
pursuant to this subsection are routine technical rules as defined in Title 5, chapter 375,
subchapter 2‑A.
Sec. 10. 35-A MRSA §3209-G is enacted to read:
§3209-G. Net energy billing cost rate year adjustment
1. Adjustment of net energy billing cost rate year. The commission shall require a
transmission and distribution utility to reconcile costs associated with net energy billing
under sections 3209-A and 3209-B, as determined by the commission, in a rate year to
begin on January 1st of each year, starting in 2026.
2. Rules. The commission may adopt rules to implement this section. Rules adopted
pursuant to this subsection are routine technical rules as defined in Title 5, chapter 375,
subchapter 2‑A.
Sec. 11. 35-A MRSA §3209-H is enacted to read:
§3209-H. Net energy billing project procurement
1. Definitions. As used in this section, the following terms have the following
meanings.
A. "Distributed generation resource" has the same meaning as in section 3209‑A,
subsection 1, paragraph B.
B. "Eligible resource" means a distributed generation resource:
(1) That reaches commercial operation before November 1, 2025;
(2) That is participating in net energy billing pursuant to section 3209-A or 3209-B;
and
(3) For which 75% or less of the bill credits associated with the distributed
generation resource are allocated to a customer of or subscriber to the resource.
2. Competitive procurement. The commission shall direct investor-owned
transmission and distribution utilities to enter into one or more contracts for energy or
renewable energy credits or both from eligible resources in accordance with this section.
The commission may not require a distributed generation resource to contract for the sale
of energy or renewable energy credits under this section.
A. By November 1, 2025, the commission shall initiate a competitive solicitation for
contracts under this section for energy or renewable energy credits or both in an amount
determined by the commission.
B. The commission may initiate additional competitive solicitations in its sole
discretion after consultation with the Governor's Energy Office.
C. The commission may not award a contract to an eligible resource participating in
net energy billing pursuant to section 3209-A at a rate that exceeds the tariff rate
calculated under section 3209-B, subsection 5, paragraph A-1 applicable on November
1, 2025 to medium commercial customers as defined in section 3106, subsection 1,
paragraph B or industrial customers in the transmission and distribution service
territory in which the eligible resource is located.
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 D. The commission may not award a contract to an eligible resource participating in
net energy billing pursuant to section 3209-B at a rate that exceeds 70% of the tariff
rate calculated under section 3209-B, subsection 5, paragraph A-1 applicable on
November 1, 2025 to medium commercial customers as defined in section 3106,
subsection 1, paragraph B or industrial customers in the transmission and distribution
service territory in which the eligible resource is located.
3. Contract terms. A contract entered into pursuant to this section must be for a term
of no more than 20 years or the remainder of the eligible resource's net energy billing
agreement with a transmission and distribution utility, whichever is shorter, unless the
commission finds a contract for a longer term to be prudent.
4. Rules. The commission may adopt rules to implement this section. Rules adopted in
accordance with this subsection are routine technical rules as defined in Title 5, chapter
375, subchapter 2-A.
Sec. 12. 35-A MRSA §3209-I is enacted to read:
§3209-I. Front of meter distributed energy resource program
1. Front of meter distributed energy resource defined. As used in this section, "front
of the meter distributed energy resource" means an electric generating facility that uses a
renewable fuel or technology under section 3210, subsection 2, paragraph B‑3, is located
in the service territory of a transmission and distribution utility in the State and is
interconnected to the distribution grid on the utility side of a customer's utility meter.
2. Program design; implementation. The Governor's Energy Office shall design a
program or programs to encourage the development of front of the meter distributed energy
resources in the State and submit the proposed program or programs to the commission. If
the commission finds that a program or programs proposed by the office provide benefits
to ratepayers in the State in excess of the costs to ratepayers, the commission shall by rule
implement the program or programs.
3. Rules. The commission may adopt rules to implement this section. Rules adopted
pursuant to this subsection are routine technical rules as defined in Title 5, chapter 375,
subchapter 2‑A.
Sec. 13. 35-A MRSA §3210-G, sub-§3, as amended by PL 2023, c. 411, §8, is
further amended to read:
3. Report. No later than March 31, 2023 and biennially thereafter, the commission
shall submit a report regarding the status of contracts for Class IA resources under this
section and the status of contracts for energy or renewable energy credits from distributed
generation resources under section 3209-D 3209-H to the joint standing committee of the
Legislature having jurisdiction over utilities and energy matters. The report must include,
but is not limited to, a description of Class IA resources participating in competitive
solicitations, information about the resources selected for contracts and the selection
process, the benefits and costs of the contracts and recommendations about how to further
stimulate investment in Class IA resources or achieve ratepayer benefits f