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Milford Microgrid

Current status, energy mix, organizations, suppliers, equipment, controls, reported specifications, and project updates—with source-level citations.

CoverageDetailed public record
Named organizations4
System facts20
Sources reviewed12
Evidence reviewed2026-07-20

Milford's downtown municipal microgrid serves five public/community facilities in Connecticut. The as-built public record is a 400 kW natural-gas CHP system plus 125 kW battery storage, with Schneider EcoStruxure controls and islanding infrastructure. The frequently repeated 120 kW solar figure belongs to the 2014 award-stage design: Schneider's 2018 design-build announcement explicitly called the project solar-ready, and the state's final project tracker does not list installed PV.

Research status
Completed and granted permission to operate in September 2021. Connecticut DEEP classifies it as operational, the city's 2023 hazard plan marks the project completed, and 2023 city procurement records document ongoing Schneider monitoring and maintenance. No public record found through July 2026 establishes installed PV, battery energy capacity/chemistry/vendor, annual CHP output, outage performance, or measured savings.
Historical classification
Community
Reported capacity
See component specifications
Coordinates
41.22409, -73.06003
Evidence note: “Every company” cannot be proven from public material alone. This page lists every organization found in the recovered record and reviewed sources, preserves unknown roles, and explicitly marks undisclosed controller or equipment details.
Report missing evidenceResearch methodology

Project delivery

Who was involved in Milford Microgrid?

4 publicly identified organizations. Where a recovered source named a participant without explaining its work, the role remains explicitly unspecified.

Organization

City of Milford

Owner, municipal customer, and operator through its Public Works department. [5][9][10]

Organization

Connecticut Department of Energy and Environmental Protection (DEEP)

State grant funder and project/interconnection program administrator. [6][5][7]

Organization

Schneider Electric

Design-build contractor; supplied the microgrid control, monitoring, remote support, and maintenance platform. [7][10]

Organization

United Illuminating

Serving electric utility and interconnection counterparty. [7][11]

System evidence

Energy mix, capacity, and specifications

Values can describe different project phases, generation sources, storage systems, or other components. Source citations are attached to each figure so discrepancies remain visible.

KW Solar
120 [1]
KW Gas/Diesel
292 [1]
Storage
30 KW [1]
Served facilities
Parsons Government Complex, Harborside Middle School, Milford Senior Center, River Park senior apartments, and Milford City Hall. [5][9]
As-built generation
400 kW natural-gas combined heat and power. Public sources reviewed do not identify engine manufacturer, unit count, or heat-recovery rating. [5]
As-built storage
125 kW battery energy storage; energy capacity (kWh), chemistry, usable duration, and manufacturer were not disclosed in the final state tracker or city records reviewed. [5][10]
Solar phase boundary
The 2014 award concept included 120 kW PV. By 2018 the contracted project was described as solar-ready, with infrastructure for a future array; the 2021 as-built tracker lists no PV. Treat 120 kW as planned, not commissioned. [6][7][5]
Early-to-final design change
2014 concept: 2 x 148 kW CHP, 120 kW PV, 100 kW battery. Final tracker: 400 kW CHP and 125 kW battery. The older 292/296 kW gas and 30 kW storage figures should not be used for the completed project. [6][5]
Funding and contract
Final DEEP tracker lists a US$2,909,341 grant; the 2014 announcement described an earlier award of nearly US$2.2 million. Schneider announced a US$4.5 million city agreement in 2018, reflecting the later project scope rather than one consistent lifetime cost figure. [6][5][7]

Controls and hardware

Equipment and controller details

Manufacturer and model are shown only when a source names them. Generic descriptions are not converted into guessed product assignments.

01

Microgrid supervisory control

Schneider Electric — EcoStruxure Microgrid Operation

Island/grid control and DER orchestration software maintained under the city's service agreement. [10]

02

Energy analytics

Schneider Electric — EcoStruxure Microgrid Advisor

Cloud/analytics layer for system optimization and reporting. [10]

03

Power monitoring

Schneider Electric — Power Monitoring Expert

Electrical metering and monitoring software included in current support. [10]

04

Remote support

Schneider Electric — Connected Services Hub

24/7 remote monitoring, semiannual reports, annual software service, and on-site preventive maintenance/testing. [10]

05

Battery energy storage

Model not publicly disclosed

125 kW as-built BESS; manufacturer, model, chemistry, and kWh rating remain unverified. [5][10]

Technical record

Architecture, performance, and project updates

Concise technical facts, milestones, operating results, and later developments. Dated notes distinguish historical design claims from current evidence.

  • Management

    • Islanding – all microgrid-enabled buildings can be powered by the microgrid during an emergency. [1]

  • Storage

    30 kW backup storage [1]

  • Resilience role

    The microgrid is intended to keep municipal administration, shelter/education, senior services, and senior housing energized when the utility grid is unavailable. [9][7]

  • Operations

    Public Works manages the operating asset; Schneider's maintenance scope covers electrical equipment, BESS, control software, remote alarming, reports, and scheduled preventive work. [9][10]

  • Projected versus measured performance

    Pre-construction reporting projected lower cost and emissions, but no verified post-commissioning annual fuel, generation, savings, or emissions dataset was found. Those projections are not reported as outcomes here. [11][5]

  • Energy mix limitation

    Normal supply combines the utility grid with natural-gas CHP, while the battery shifts/supports power. There is no as-built evidence for the planned PV and no published annual source shares. [5][7]

Provenance

12 sources

Primary owner, government, university, supplier, and engineering sources are preferred. Archived references preserve claims whose original pages moved or disappeared.

  1. [1]
    Recovered Microgrid Projects record

    Internet Archive · Archived source · captured 2021-04-20

  2. [2]
    District Energy

    districtenergy.org · Archived source · captured 2021-04-20

  3. [3]
    EPA

    epa.gov · Archived source · captured 2021-04-20

  4. [4]
    Eastern Connecticut State University

    www1.easternct.edu · Archived source · captured 2021-04-20

  5. [5]
  6. [6]
  7. [7]
  8. [8]
  9. [9]
  10. [10]
  11. [11]
  12. [12]
    Milford Microgrid (archived project page)

    MicrogridProjects.com via Internet Archive · Archived source

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