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Utilities in Ontario

528 companies classified by reported NAICS codes in the Ontario Business Registry, ServiceOntario records.

Classification reflects the business activity reported in the source record. Registration in Ontario does not necessarily mean a local operating location.

CompanyBusiness categoryRegistry numberRegisteredStatusCity
1000737902 ONTARIO LIMITED PARTNERSHIPUtilities10007379272023-12-13Active—
1000737938 ONTARIO LIMITED PARTNERSHIPUtilities10007379432023-12-13Active—
1000739607 ONTARIO LIMITED PARTNERSHIPUtilities10007396592023-12-14Active—
1000739688 ONTARIO LIMITED PARTNERSHIPUtilities10007396922023-12-14Active—
1000739697 ONTARIO LIMITED PARTNERSHIPUtilities10007397012023-12-14Active—
1000757443 LPUtilities10007577122024-01-04Active—
1001132336 ONTARIO LIMITED PARTNERSHIPUtilities10011321232025-01-30Active—
1001132341 ONTARIO LIMITED PARTNERSHIPUtilities10011325272025-01-30Active—
1001132349 ONTARIO LIMITED PARTNERSHIPUtilities10011325362025-01-30Active—
1001132353 ONTARIO LIMITED PARTNERSHIPUtilities10011325402025-01-30Active—
1001132357 ONTARIO LIMITED PARTNERSHIPUtilities10011325452025-01-30Active—
261 TILLSON LIMITED PARTNERSHIPUtilities2207170372012-07-05ActiveGuelph
301 TILLSON LIMITED PARTNERSHIPUtilities2207171362012-07-05Active—
500 HIGHWAY #3 LIMITED PARTNERSHIPUtilities2207172012012-07-05ActiveGuelph
75 ARMSTRONG SOLARUtilities10015977762026-05-05Active—
A & T DRAIN AND WATERPROOFING CO.Utilities10006441192023-09-05Inactive—
A-TECHUtilities10011639322025-03-04Active—
ABERDEEN COTTAGEUtilities10014689182026-02-02Active—
ABW SOLAR GENERAL PARTNERSHIPUtilities3111761192021-08-04ActiveCANADA
AECO GAS STORAGE PARTNERSHIPUtilities10010088552024-09-16Active—
AECON KIEWIT NUCLEAR PARTNERSUtilities10012075582025-04-14ActiveEtobicoke
AECON KIEWIT NUCLEAR PARTNERS U2-4Utilities10015811112026-04-21Active—
AI RENEWABLE 2023 LIMITED PARTNERSHIPUtilities10006249312023-08-15Active—
AI RENEWABLE 2024 LIMITED PARTNERSHIPUtilities10009195842024-06-11ActiveWoodbridge
AI RENEWABLE 2025 LIMITED PARTNERSHIPUtilities10011961322025-04-03Active—
AI RENEWABLE 2026 LIMITED PARTNERSHIPUtilities10014570592025-12-30ActiveWoodbridge
AI RENEWABLE DOMINION 2026 LIMITED PARTNERSHIPUtilities10014570162025-12-30ActiveWoodbridge
ALECTRA CONVERGENT DEVELOPMENT LPUtilities10002439542022-06-27Inactive—
ALECTRA CONVERGENT ELT-1 GENERAL PARTNERSHIPUtilities10011979812025-04-04Active—
ALGONQUIN HYDRO HOLDINGS (LONG SAULT) LIMITED PARTNERSHIPUtilities10010405732024-10-21Active—
ALGONQUIN POWER (CAMPBELLFORD) LIMITED PARTNERSHIPUtilities9711934531997-10-08Inactive—
ALGONQUIN POWER (CORDOVA) LIMITED PARTNERSHIPUtilities9711934611997-10-08ActiveOakville
ALGONQUIN POWER (LONG SAULT) PARTNERSHIPUtilities2208772782012-08-22ActiveOakville
ALMONTE BESS LIMITED PARTNERSHIPUtilities10003372152022-10-13Inactive—
AMHERST ISLAND PARTNERSHIPUtilities2906009642019-05-28Active—
AP MUNI P3 LPUtilities2311739072013-12-04ActiveONTARIO, CANADA
AP SOLAR LPUtilities2310700872013-11-01ActiveONTARIO, CANADA
ARGENTIA RENEWABLES WIND LPUtilities10004664382023-03-07Active—
ARLEN ENERGY STORAGE 1 LPUtilities10004406802023-02-08Active—
ARNPRIOR AIRPORT SOLAR L.P.Utilities10013060782025-07-29Active—
ARNPRIOR BESS LIMITED PARTNERSHIPUtilities10006787052023-10-12Active—
ASM SOLAR G1 LPUtilities2509610262015-10-01Inactive—
ASM SOLAR P2 LPUtilities2509610002015-10-01ActiveONTARIO, CANADA
ASM SOLAR P4 LPUtilities2509610912015-10-01ActiveONTARIO, CANADA
ASM SOLAR P6 LPUtilities2509610592015-10-01ActiveONTARIO, CANADA
ASPEN HEIGHTS WIND LPUtilities10013739642025-10-02ActiveCANADA
ATAASOWIN BATTERY ENERGY STORAGE PROJECT GENERAL PARTNERSHIPUtilities10013676722025-09-25Active—
ATL ROOFTOP SOLAR LPUtilities2409499332014-09-30ActiveCANADA
ATLANTIC POWER LIMITED PARTNERSHIPUtilities9704013291997-03-27Active—
AURORA SMITHS FALLS 1 LIMITED PARTNERSHIPUtilities2206215932012-06-07ActiveCANADA

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