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Sustainable Lexington Committee
Minutes of Meeting of February 1, 2022 t.EMG"TO
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A meeting of the Sustainable Lexington Committee (SLC)was held by Zoom conference. A
quorum of five was present throughout.
Members Present: Cindy Arens, Celis Brisbin, Paul Chernick, Todd Rhodes (vice-chair),
Dan Voss (Chair)
Members Absent: Archana Dayalu, Rick Reibstein, Charlie Wyman
Staff Present: None
Other Attendees: None
The meeting was called to order at 7:13 pm. Todd referenced the opening statement requested by
the Town Clerk, and all members present responded that they could hear.
The focus on the meeting was to prepare for the joint meeting with the Permanent Building
Committee (PBC) on Thursday (2/3).
• Dan Voss provided an update on his discussions with members of the PBC and the
Director of Public Facilities regarding the solar options for the Police Station and other
sustainability elements.
• The options include sufficient solar for the Police Station to be net zero emissions.
• About 650,000 kWh per year would be sufficient for the building needs and potentially
for charging electric vehicles.
• Dan presented CAD models showing versions of the options:
o The canopies in the back would be sufficient to meet net zero.
o The canopy on the side would support vehicle charging
• A key objective would be for the infrastructure (electrical systems, conduit, etc.) in the
building and parking area to be sufficient to support the net zero option—regardless of
the option selected.
o Including infrastructure for energy storage. Need to identify a location for the
storage and central inverter bank.
• The net zero option would add about$16,000 per year over the cost of the system for the
first 20 years and then about$50,000 per year in subsequent years - $750,000 cumulative
positive cash flow.
• The group discussed the role of the Historic District Commission (HDC) in approving the
design and the resilience benefit of on-site solar.
• On Thursday, the objective is to discuss timeline for approval and how to integrate solar
into the design.
• The committee discussed that the goal should be to build the Police Station with solar.
Incorporating solar as part of the initial design is the lowest cost method for integrating
solar.
Sustainable Lexington Committee Minutes of February 1, 2022
o The design should include all base infrastructure and battery location.
o Also, since the lead time for the solar is shorter than the building, solar can be
added as part of the process and canopies can be approved after the building is
approved.
• In preparation for the PBC meeting on 2/2, the Committee plans to recommend that the
Select Board:
1. Approve a design of the Police Station that represents a 100%net zero project
(based on the buildings energy needs) and considers including sufficient solar
production to meet the energy needed for future EV police cruiser fleet.
2. Include approval of the solar structure along with the building by the HDC, so that
the site will be solar-ready.
3. Ensure that the detailed design for the planned building and parking area include
infrastructure (foundations, conduit, medium voltage service, building systems)that
accommodate the full solar array and future energy storage—for 100%net zero
design.
4. Present an appropriation request to Town Meeting that includes the budget for both
the building and solar structure—as an integrated project.
5. Include charging stations in the outdoor parking area as established in the general
zoning bylaws (e.g., conduit for 50% of parking spaces, and 4% charging stations).
The committee voted to adjourn at 8:40 pm.
Respectfully submitted,
Todd Rhodes
2.