RSU 24 board moves forward on on‑site solar PPA after Revision Energy presentation

Tina Mazerv, a representative of Revision Energy, presented an on‑site rooftop solar proposal to the RSU 24 School Board for the Charles M. Sumar Learning Campus and answered extensive board questions before members voted to authorize district staff to negotiate the agreement.

Mazerv described Revision Energy as an employee‑owned, certified B Corp with extensive school and municipal experience and said the proposed rooftop array is sized at roughly 361.99 kW DC (about 240 kW AC) and is expected to generate just under 400,000 kilowatt‑hours annually. Under the project model — a power purchase agreement (PPA) — an investor would build and own the array and the district would buy the electricity at a locked rate with no upfront capital cost to the district.

Why it mattered: recent state and federal timing made the discussion urgent. Mazerv told the board that Maine’s net energy billing rules were changed to fix the credit escalator and that the current program sunsets at the end of 2025. She also said the federal investment tax credit (ITC) requires projects to be “under construction” in 2025 for investors to claim the credit. Those combined deadlines, Mazerv said, are why Revision asked the district to advance contracting decisions on an accelerated timetable.

Money and tradeoffs: Mazerv said the year‑one PPA rate for the investor‑owned model has risen to 20 cents per kilowatt‑hour (from an earlier 17.5 cents estimate) because investors now face more policy risk. Revision’s financial examples showed an investor build cost of a little over $1.2 million and an optional estimated buyout at about $777,000 in year six. Revision presented scenario modeling that produced an estimated PPA savings of roughly $39,000 over years one through five (about $8,000 per year) and $221,000 over a 20‑year contract; buying out at year six was modeled to yield larger lifetime savings but requires substantial upfront funds.

Board questions focused on investor identity and contract risk, equipment sourcing, operations and maintenance, interconnection and utility approval, and roof impacts. Mazerv said the investor is identified after the project reaches a development milestone; investors recover return primarily through tax incentives and the PPA revenue, and investors generally remain responsible for operations and maintenance while they own the system. Revision said panels proposed for the project are tier‑one modules shipped from Singapore and that inverters used in earlier work were sourced from Israel; Revision said it will share exact equipment specifications with district staff.

On grid and interconnection concerns, Mazerv explained the utility interconnection study limits how much generation can be tied to a given point on the grid and that the utility (referred to in the presentation as Versant Power) can require sizing or interconnection changes during the approval process. She emphasized that the interconnection approval is an external dependency and could delay or, in rare cases, prevent a project from moving forward.

Contract timing and next steps: Revision encouraged the district to finalize a contract quickly so the project can meet the construction‑start tests for the ITC and the net billing deadline; Revision aimed to have contracts in place by the end of August to preserve those benefits. The board debated roof replacement timing and whether a future buyout should be put to voters; several members said taxpayers should be consulted if the district ever seeks to finance a buyout. The motion that passed authorized moving forward with the project and allowed the superintendent and facilities manager to negotiate the agreement; the transcript records "motion carries" but does not include a roll‑call vote tally in the minutes.

What remains uncertain: the transcript indicates the investor had not been named at the meeting; several cost figures (estimated buyout, lifetime savings) were presented as models; interconnection approval and investor selection were listed as key external risks that could alter schedule or outcomes.

The board approved the negotiation authorization; staff and Revision said they would proceed with contract development and interconnection filings under the legislative and ITC deadlines.