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Wesleyan University Microgrid

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

CoverageDetailed public record
Named organizations8
System facts26
Sources reviewed13
Evidence reviewed2026-07-20

Wesleyan University's operational campus microgrid is a natural-gas CHP network with solar connected to the same campus distribution system—not a fully renewable campus island. Its principal resources are a roughly 2.4 MW central cogeneration plant, a 676 kW Freeman Athletic Center CHP unit and at least 960.2 kW of specifically enumerated campus solar. The Freeman project entered service in March 2014 and an expanded critical-load network reached operation in December 2017. Current Wesleyan data show substantial natural-gas use and that purchased wind RECs ended in FY2024; the university's stated goal is to make the microgrid's heating, cooling and electricity 100% renewable by 2035. No utility-scale BESS is documented.

Research status
Operational since 2014 with resilience-network expansion operational since 2017. Still fossil-gas dominated; renewable transformation is a 2035 target, not current condition.
Historical classification
CHP
Reported capacity
See component specifications
Coordinates
41.55661, -72.65690
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 Wesleyan University Microgrid?

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

Organization

A/Z Corporation

Design-build/EPC contractor for the Freeman Athletic Center microgrid/CHP project. [8]

Organization

Connecticut Department of Energy and Environmental Protection

Awarded $693,815 for the first microgrid phase and $424,000 for the expansion; tracks both as operational. [7]

Organization

EBD Engineering

Electrical/mechanical design and control-integration engineer for the Freeman CHP and connections to existing campus feeders. [11]

Organization

GE Jenbacher

Manufacturer identified for the central-plant reciprocating CHP generator. [9]

Organization

Guascor Energy

Manufacturer of the 676 kWe Freeman natural-gas reciprocating generator set. [10]

Organization

Hale Hill Biofuels

B20 biofuel supplier for campus buildings since 2013 [3]

Organization

Kraft Power

Packager/supplier supporting the Guascor CHP installation. [10]

Organization

Wesleyan University

Owner/operator and host of the campus microgrid, CHP plants, distribution system and solar arrays. [5][6][12][13]

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
950 [1]
KW Gas/Diesel
3800 [1]
Storage
NA [1]
Current central cogeneration
2.4 MW natural-gas system installed in 2009 [3]
Named solar installations
750 kW Long Lane, 200 kW Freeman Athletic Center, 7.2 kW at 19 Fountain Avenue, and 3 kW at Admissions [3]
Archived aggregate generation
950 kW solar and 3.8 MW gas/diesel in the earlier directory snapshot [1]
Microgrid service scope
Electricity distributed to approximately 1.8 million square feet of central campus [4]
Central-plant CHP
approximately 2.4 MW — Current university page rounds the plant to 2.4 MW. A/Z's project page reports a 2.3 MW Jenbacher generator; these describe the same central resource at different precision, not two units. [5][7][9]
Freeman Athletic Center CHP
676 kW electrical — Some contractor material rounds this to 680 kW. The detailed Guascor/EBD rating is 676 kWe. [6][7][8][10][11]
Freeman useful-heat recovery
approximately 850 lb/hour steam and more than 2,000 MBH thermal recovery — Recovered heat supports domestic hot water, pool heating and ice-rink loads. [10][11]
Enumerated campus solar
at least 960.2 kW — 750 kW Long Lane, 200 kW Freeman, 7.2 kW 19 Fountain Avenue and 3 kW Admissions. Wesleyan also mentions later preschool solar without stating a capacity on the current energy page, so 960.2 kW is a documented floor rather than a complete current total. [5][12]
Freeman projected annual electricity
approximately 4,700 MWh/year — Launch-era university projection/claim, not a recent audited production value. [6]
Microgrid grants
$693,815 first phase plus $424,000 expansion — CT DEEP award tracker values. [7]
2024 energy consumption reported by Wesleyan
77,054 MMBtu electricity; 251,587 MMBtu natural gas; 5,573 MMBtu fuel oil — Natural gas was divided into 85,664 MMBtu for cogeneration and 165,923 MMBtu for non-cogeneration uses. Units are site energy-accounting values, not generator electrical output. [5]
Battery storage
No utility-scale BESS documented — Island support comes from dispatchable CHP, controls and feeder configuration. [5][7][11]

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

Campus controls

Model not publicly disclosed

The reviewed Wesleyan sources describe the microgrid and generation assets but do not identify a commercial microgrid controller, EMS, inverter, or genset model. [3][4]

02

Central natural-gas reciprocating CHP

GE Jenbacher — Exact engine model not disclosed

Quantity/status: One approximately 2.3-2.4 MW generator — An approximately 22,000-pound engine-generator with waste-heat recovery producing steam for campus thermal loads. [5][9]

03

Freeman natural-gas reciprocating CHP

Guascor Energy / Kraft Power — G-36SL

Quantity/status: One 676 kWe unit — CHP heat serves domestic hot water, the approximately 80 °F pool and the ice rink. [10]

04

Freeman heat-recovery steam generator

Not disclosed — Approximately 850 lb/hour HRSG

Quantity/status: One — Integrated with the campus thermal system. [11]

05

Microgrid control

Not disclosed — New PLC-based central control and feeder switching

Quantity/status: One integrated scheme — Coordinates the Freeman unit, two existing campus feeders and the central 2.4 MW CHP plant. Public project pages do not name the PLC/controller vendor. [11]

06

Solar PV

Multiple/not fully disclosed — Not disclosed

Quantity/status: At least 960.2 kW across named installations — The 750 kW-AC Long Lane array is explicitly connected to the microgrid. [5][12]

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.

  • Islanded scope

    The system interconnects two existing campus feeders, the central CHP and the Freeman CHP through PLC-based controls. Its protected network covers selected central-campus/critical buildings, not necessarily every university building. In 2016 Wesleyan described roughly 80 buildings on the cogeneration grid out of 311 total. [7][11][12]

  • Resilience phases

    The Freeman microgrid launched March 6, 2014, with the athletic center designated as an emergency shelter and FEMA distribution point. A second CT-funded phase serving additional dining, public-safety and physical-plant loads became operational in December 2017. [6][7]

  • Current energy mix

    Wesleyan remains gas-heavy: its current energy page reports 251,587 MMBtu of natural gas in 2024, including 85,664 MMBtu attributed to cogeneration, versus 77,054 MMBtu of purchased electricity. On-site solar is under 1 MW in explicitly named capacity. Wesleyan bought 100% wind RECs for purchased electricity in FY2020-23 but stopped in FY2024 because of cost; RECs did not change on-site physical generation. [5]

  • Future plan versus present state

    The university's master plan targets 100% renewable heating, cooling and electricity within the microgrid by 2035. That is a decarbonization commitment, not evidence that the current natural-gas CHP network is renewable or already converted. [5][13]

  • Rating/performance cautions

    The central CHP appears as 2.3 MW in contractor material and 2.4 MW in university/state material; Freeman appears as 676 kW or rounded 680 kW. Launch-era claims of 4,700 MWh/year and more than 80% campus electric coverage are not current verified production data. [5][6][8][9][10]

Provenance

13 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 2021-01-20

  2. [2]
    Governor Helps “Power Up” Wesleyan’s New Microgrid Project

    newsletter.blogs.wesleyan.edu · Archived source · captured 2021-01-20

  3. [3]
    Energy Initiatives

    Wesleyan University · Primary source

  4. [4]
    The Future of Energy at Wesleyan

    Wesleyan University · Primary source

  5. [5]
    Energy

    Wesleyan University · Primary source

  6. [6]
  7. [7]
    Connecticut Microgrid Grant and Loan Program Project Award Tracking

    Connecticut Department of Energy and Environmental Protection · Primary source

  8. [8]
    Wesleyan University Microgrid Project

    A/Z Corporation · Primary source

  9. [9]
    Wesleyan University CHP Facility

    A/Z Corporation · Primary source

  10. [10]
  11. [11]
    Wesleyan University Microgrid Portfolio Entry

    EBD Engineering · Primary source

  12. [12]
    Long Lane Solar Array Is Live

    Wesleyan University · Primary source

  13. [13]
    Carbon Neutrality

    Wesleyan University · Primary source

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