My Turn: Updates on the town’s two solar energy projects

By Jim Hutchinson, Select Board

A number of folks have expressed interest in the status of the solar projects in progress at the transfer station and Lincoln School, so I thought I’d post an update. I am the Select overseeing the transfer station project and I was also a member of the PPA [power purchase agreement] subcommittee that advised the School Committee on the Lincoln School solar project. For this update I also got input from Buck Creel, the Lincoln School staff member overseeing the Lincoln School solar project.

What solar project is Lincoln doing at the transfer station?

After years of effort, careful negotiations with the National Park Service, discussions with neighbors on Mill Street, and a successful competitive bidding process, Lincoln is now finalizing final details of a Power Purchase Agreement (“PPA”) with the New Jersey-based firm HESP to construct and operate a 1.4MW solar PV system for our benefit on top of the capped landfill next to the transfer station, which we expect to generate enough green electricity to cover the amount of municipal electricity that has historically been used by the town net of the Lincoln School. As an added benefit to the town, while we are doing this construction work, with the input of the Conservation Commission and the Bicycle and Pedestrian Advisory Committee, we will also construct a bikeable and walkable path connecting Mill Street to the transfer station access road.

What is the expected schedule for the transfer station solar project?

We are currently working our way through the local, state, and utility permitting processes. We received Conservation Commission approval for the project in November 2023 and hope to get Planning Board approval this March. We hope to get approval from the MassDEP by June, and from Eversource by the end of the summer. HESP will then order the equipment and begin installation, hopefully in the Fall of 2024, or Spring of 2025 at the latest. Construction is expected to take four months, and equipment startup one additional month. We hope to be generating electricity by the Fall of 2025.

What is the solar project at Lincoln School?

The School Committee signed a PPA Agreement with TotalEnergies (previously SunPower) back in 2022 to install 1.2MW of rooftop and parking lot canopy solar PV as well as 562KW of battery storage. We expect this system to generate enough electricity to cover the expected usage at Lincoln School and thereby make the school “net zero” overall. In addition, the battery system should help us minimize the dreaded “demand charges” from Eversource that occur if our generation plus battery supply doesn’t meet our spot demand and we have to draw power from the grid at peak times. The technical approach taken in this project was somewhat novel for municipal projects in that it is “behind the meter,” meaning that a good chunk of the solar power generated by the panels is used directly by the School and is not shipped out to Eversource, and thus we do not have to pay distribution charges on that amount.

I see the solar panels have been installed at Lincoln School rooftops and carport canopies. Are they live?

No. TotalEnergies has encountered a number of setbacks that have delayed the completion of this project, including supply chain issues, issues with Eversource needing to adopt new policies and procedures for our novel “behind the meter” situation, and most recently, an equipment compatibility issue between the inverters and rapid shutdown safety devices used on the project, which is the current holdup on energizing the system. None of these delays have been the fault of the Town of Lincoln, although we have done what we can to help resolve the issues quickly while protecting Lincoln’s interests.

When do we currently expect Lincoln School solar to be live?

We are working with TotalEnergies now to finalize the plan for them to replace the incompatible equipment, which will be done solely at their expense. They need snow and ice-free conditions to do this work, so the schedule is weather dependent, but we currently expect the work to be completed and the system to go live in May, and possibly sooner. TotalEnergies does not collect any revenue from Lincoln for this project until they go live, so they are just as eager as we are to do so.

Aren’t we paying more for electricity from Eversource while we wait for the Lincoln School solar PV system to go live?

Yes, although note that the cost to Lincoln for delays is not the full ~$500,000 per year we spend on electricity when sourcing solely from Eversource; it is the roughly $60,000–$100,000 per year we hope to save when we replace much of the Eversource usage with PPA usage. The exact savings we might have enjoyed are not possible to calculate since we do not know exactly how much power the panels would have produced over the period.

Can we recover that extra cost due to delays from TotalEnergies?

Possibly, for some amount related to the guaranteed production of the system, since we don’t have any actual production. We did negotiate for and got language in the PPA agreement that addresses costs associated with some delays in getting the system live. With town counsel’s help, we are reviewing the town’s rights, the expected dollar amount that might be recoverable, the likelihood such events will be judged to be force majeure and thus not be eligible for recovery, and the impact pursuing a recovery could have on what is the beginning of a 25-year relationship with this developer. Subsequently we will advise the School Committee, who will make the ultimate determination on whether the town pursues a recovery.

Once these two solar projects are live, will Lincoln be “net zero” regarding municipal electricity use?

Yes, these projects are expected to generate enough green electricity to cover our municipal electricity usage, although note that in the case of Lincoln School the sizing was done based on expected usage, and in the non-school case we are sizing while considering historical usage. Periodic reassessment of our “green coverage” will be needed. Also, new uses to the town, such as a possible community center or increased adoption of electric vehicles by the town, may require additional solar power in the future to keep the town “net zero.”

“My Turn” is a forum for readers to offer their letters to the editor or views on any subject of interest to other Lincolnites. Submissions must be signed with the writer’s name and street address and sent via email to lincolnsquirrelnews@gmail.com. Items will be edited for punctuation, spelling, style, etc., and will be published at the discretion of the editor. Submissions containing personal attacks, errors of fact, or other inappropriate material will not be published.