City of Missoula #819

Missoula Water net-metered solar array design-build project

The City of Missoula is seeking a solar design-build team for net-metered arrays at Missoula Water facilities. - Buyer: City of Missoula, Public Works & Mobility Department; project sites are Missoula Water properties. - Procurement: Design, permit, furnish, install, interconnect, commission, and close out up to four ground-mounted solar PV arrays, each targeting a maximum of 50 kW AC. South Reservoir is an optional fifth site that may replace an infeasible site. - Sites and approximate annual electricity use: North Reservoir, 347,700 kWh; High Park Reservoir/Booster, 228,800 kWh; Haugan Wells, 246,700 kWh; Skyview Reservoir, 370,200 kWh; optional South Reservoir, 293,700 kWh. - OEMs and vendors: No solar module, inverter, or racking OEM or vendor is specified. NorthWestern Energy is named for installer qualification and utility interconnection requirements; the selected team must be a NorthWestern Energy Qualified PV installer. - Equipment and technical requirements: Modules must be UL 1703- and California Energy Commission-listed; inverters must be UL 1741- and CEC-listed with at least 95% efficiency. Components must be listed, tested, identified, or labeled by UL or another nationally recognized testing laboratory. Proposals must address federal Department of Energy Foreign Entities of Concern sourcing requirements relevant to solar tax credits. Electrical plans must be stamped by a professional engineer. - Monitoring and warranties: Provide online monitoring, preferably integrable with the City's building energy management system, with internet service independent of the City's network. Include annual data storage, management, and display costs and reporting on energy production, capacity factor, avoided emissions, and performance issues. Minimum warranties: 25 years for module power production, 12 years for module workmanship, 10 years for inverters, 10 years for racking, and 2 years for construction. - Proposal and other notable requirements: Include site-specific approach and schedule, conceptual capacity and equipment basis, preliminary site budgets by major cost category, a not-to-exceed design fee, and permitting costs. Payment and performance bonds are each required at 100% of the awarded contract. Montana prevailing-wage and applicable equal-opportunity requirements apply.

Description

The City of Missoula, Montana Public Works & Mobility Department seeks qualifications and proposals from solar design-build teams for net-metered, ground-mounted photovoltaic systems at up to four Missoula Water well and booster pumping sites, with a fifth site available as an option. The selected team will be responsible for design, permitting, equipment, installation, interconnection, and commissioning; the systems are to be operational by December 1, 2027. The combined two-stage procurement requests qualifications and proposals in a single submittal, including preliminary site budgets and a not-to-exceed design fee. Electronic responses are due December 1, 2026, at 3:00 PM local time.

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