United Illuminating Co

180 Marsh Hill RD Orange, CT 6477

Company Summary Information

United Illuminating Co is ranked #1,937 out of 4,884 utilities nationwide in terms of total annual net electricity generation, and they are ranked #671 out of 1,268 utilities in terms of total annual net electricity generation from natural gas.

United Illuminating Co generated 29.9 GWh during the 3-month period between September 2023 to December 2023.

According to FERC EQR data, United Illuminating Co had a total of $27.6M in seller transasctions and $83.3M in buyer transasctions in 2024 Q4.

Company NameUnited Illuminating Co
Location180 Marsh Hill RD Orange, CT 6477
EIA Utility TypeInvestor-Owned Utility
EIA Utility DatesAug 2015 to Jan 2025
EIA Annual Generation 61.2 GWh
EIA Power Plants3
Fuel Types Natural Gas Solar
Ranked #1,937 out of 4,884 Utilities Nationwide by Annual Generation
Ranked #671 out of 1,268 Utilities Nationwide in terms of Natural Gas Generation

FERC Seller Summary

Seller Dates AvailableJul 2013 to Dec 2024
Seller Total Transaction Charges$533.27M
Seller Total Transactions7,400,645
Seller 2024 Q4 Transaction Charges$27.59M
Seller 2024 Q4 Transactions383,334

FERC Buyer Summary

Buyer Dates AvailableJul 2013 to Dec 2024
Buyer Total Transaction Charges$2.85B
Buyer Total Transactions71,364
Buyer 2024 Q4 Transaction Charges$83.27M
Buyer 2024 Q4 Transactions337

Map of United Illuminating Co Locations

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Monthly Electricity Generation by Type

Monthly electricity generation by source as reported by the EIA

Monthly FERC Transaction Charges by Type

Monthly aggregates and sums are derived from FERC Electronic Quarterly Reports (EQR)

Power Plants Operated by United Illuminating Co

PlantLocationAnnual GenerationInitial Operation DateLast UpdateFuel Types
UI RCP Bridgeport SeasideBridgeport, Connecticut20 GWhOct 2015Jan 2025 Natural Gas : 89.4% Solar : 10.6%
UI RCP New Haven Fuel CellNew Haven, Connecticut16 GWhJul 2015Jan 2025 Natural Gas
UI RCP Woodbridge FCWoodbridge, Connecticut16 GWhNov 2016Dec 2023 Natural Gas

Other Companies Listed Alphabetically

A list of companies close to United Illuminating Co when arranged alphabetically. They do not neccessarily have any association with United Illuminating Co.

Company NameCompany LocationEIA Annual
Generation
FERC 2024 Q4
Transactions
Ulysses Solar, LLCIrvington, NY1.7 GWh-
Umass BostonDorchester, MA714.6 MWh-
Umbriel Solar, LLCBoston, MA339.8 GWh$2.57M
Unalakleet Valley ELEC CoopUnalakleet, AK3.4 GWh-
Underhill Solar LLCSan Francisco, CA4.1 GWh-
Union Carbide Corp-SeadriftMidland, MI692.8 GWh$731.10k
Union Electric Co - (Mo)St Louis, MO35.1 TWh$446.14M
Union Falls Hydro Power LPMontreal, QB10.8 GWh-
Uniper Global Commodities North America LLCHouston, TX-$9.96M
Unisea IncDutch Harbor, AK32.3 GWh-
United States Solar CorporationFairfield, CT85.1 GWh-
United States Sugar CorpClewiston, FL297.9 GWh-
United TechnologiesEast Hartford, CT114.0 GWh-
United Therapeutics CorporationSilver Spring, MD4.5 GWh-
Unitil Energy Systems, Inc.Hampton, NH-$6.89M
University Of AlaskaFairbanks, AK71.3 GWh-
University Of ArizonaTucson, AZ100.2 GWh-
University Of ArkansasFayetteville, AR41.0 GWh-
University Of California IrvineIrvine, CA121.5 GWh-
University Of California San DiegoLa Jolla, CA244.5 GWh-

Top 20 Companies Associated with United Illuminating Co

A list of the top 20 companies associated with United Illuminating Co in terms of total FERC EQR transactions charges. Total Transaction Charges are based on FERC EQR data obtained since Q3 2013.

Company Name2024 Q4 Transactions w/
United Illuminating Co
Constellation Energy Generation, LLC$35.83M
Isone$27.59M
Nextera Energy Marketing, LLC$23.44M
Dominion Energy Nuclear Connecticut, Inc.$19.14M
Nextera Energy Seabrook, LLC$2.04M
DTE Energy Trading, Inc.$1.07M
Scef1 Fuel Cell, LLC$522.98k
Derby Fuel Cell, LLC$504.51k
Nutmeg Solar, LLC$138.83k
Sanford Airport Solar, LLC$134.99k
Quinebaug Solar, LLC$131.01k
Farmington Solar, LLC$110.07k
Wallingford Renewable Energy LLC$94.94k
Coolidge Solar I, LLC$79.11k
Hecate Energy Albany 2 LLC$34.64k
Citigroup Energy Inc.-
Nextera Energy Power Marketing, LLC-
HESS Corporation-
Exelon Generation Company, LLC-
Dominion Retail, Inc.-

The 20 Most Recent FERC EQR Transactions

Displaying Results 1 to 20 of 7,472,009   ( 1.586s )
Seller NameBuyer NameProductTransaction
Group Ref #
Begin DateEnd DateTrade DateQuantityPriceUnitsTransmission
Charge
Transaction
Charge
FERC Tariff RefContract
Service
Agreement
Contract
Filing
Type
Contract
Execution
Date
Contract
Commencement
Date
Contract
Termination
Date
TimezoneBalancing
Authority
Point of
Delivery Hub
ClassTermIncrementIncrement
Peaking
Filing
Type
Broker
Exchange
Constellation Energy Generation, LLCUNITED ILLUMINATING COMPANYREQUIREMENTS SERVICEPDSBBV1122024-12-01 00:002024-12-31 23:592023-07-193,519.308$194.45$/MWH$0.00$684,329.44FERC Electric, Market-Based Rate Tariff, 7.0.020461New2010-02-012018-01-012025-12-31EasternPrevailing2ISNECTFirmShortTermMonthlyFullPeriodNew
Constellation Energy Generation, LLCUNITED ILLUMINATING COMPANYREQUIREMENTS SERVICEPDSBBV1122024-12-01 00:002024-12-31 23:592023-07-1910,647.556$181.94$/MWH$0.00$1,937,216.33FERC Electric, Market-Based Rate Tariff, 7.0.020461New2010-02-012018-01-012025-12-31EasternPrevailing2ISNECTFirmShortTermMonthlyFullPeriodNew
The United Illuminating CompanyISO-NEENERGYNE04104652024-12-31 23:552024-12-31 23:592024-12-310.1878$30.85$/MWH$0.00$5.79The United Illuminating Company MBR Tariff, 0.0.0ER10-3160New2003-10-312005-02-01EasternStandard2ISNE4435NotApplicableClassShortTermFiveMinuteOffPeakNew
The United Illuminating CompanyISO-NEENERGYNE04193932024-12-31 23:552024-12-31 23:592024-12-310.162$31.03$/MWH$0.00$5.03The United Illuminating Company MBR Tariff, 0.0.0ER10-3160New2003-10-312005-02-01EasternStandard2ISNE4442NotApplicableClassShortTermFiveMinuteOffPeakNew

United Illuminating Co Name and Address Permutations

Due to the nature of the data we have to make some assumptions when determining if two companies are the same. So to be transparent about how we're calculating some of the summary values, here are all the company names and addresses that were combined to create this record. While we try to make sure everything is as accurate as possible we can't guarantee complete accuracy for all records.

Company NameCompany Address
The United Illuminating Company100 Marsh Hill Road Orange, CT 06477
The United Illuminating Company180 Marsh Hill Road Orange, CT 06477
United Illuminating Co180 Marsh Hill RD Orange, CT 6477