Metering Service Providers

To register a metering installation, please contact a metering service provider (MSP). The following list of registered MSPs are the only organizations authorized to undertake the registration of metering installations for operation in the wholesale electricity market.

Metering Service Providers must satisfy the requirements in the market rules, associated manuals, and procedures:

List of registered MSPs


Name of Organization


Name of Contact

Phone No. / Fax No.


ERTH (Holdings) Inc.

180 Whiting Street
Ingersoll, ON
N5C 3B5

Dale Flynn

T: 519-485-6038
Ext 282
F: N/A


Meter Services Peterborough

2245 Keene Road
P.O. Box 4125, Station Main
Peterborough, ON
K9J 6Z5

Terry McConnell

T: 705-748-9301
Ext 1279
F: 705-743-5988


Rodan Energy Solutions Inc.

165 Matheson Blvd. East, Suite 6
Mississauga, ON
L4Z 3K2

Gary Nunes

T: 905-625-9900
Ext 231
F: 905-625-4307


Toronto Hydro-Electric System Ltd.

500 Commissioners Street
Toronto, ON
M4M 1B4

Robert Cappadocia

T: 416-542-3478
F: N/A


Hydro One Networks Inc. (MSP)

255 Matheson Boulevard West
Mississauga, ON
L5R 3G3

Kimberly Maves

T: 905-755-3808
F: 905-755-3803


Hydro Ottawa Limited (MSP)

201 Dibblee RoadOttawa, ON
K2R 1J2 

Kristopher Lelliott

T: 613-738-5499
Ext 7176
F: 613-738-5499
Ext 7457


Enova Power Corp (MSP)

526 Country Squire Road
Waterloo, ON
N2J 4G8

Greig Cameron

T: 519-745-4774
Ext 6182
F: N/A


Enwin Utilities Ltd.

4545 Rhodes Drive
Windsor, ON
N9A 5T7

Mark Pearce

T: 519-251-7300
Ext 238
F: 519-251-7320


Oshawa PUC Services Inc.

100 Simcoe Street South
Oshawa, ON
L1H 7M7

Roger Ersil

T: 905-723-4626
Ext 5242
F: 905-723-3248


Thunder Bay Hydro (MSP)

37 Front Street
Thunder Bay, ON
P7A 8B2

Daniel Dillon

T: 807-343-1037
F: 807-343-1192


N-Sci Technologies Inc.

875 Queen Street East, Unit 6
Sault Ste. Marie, ON
P6A 2B3

Robert Reid

T: 705-941-1199
F: 705-253-4350


Alectra Energy Solutions Inc.

55 John St. North
Hamilton, ON
L8R 3M8

Rob Henschel

T: 905-317-4597
F: 905-522-8373


Electek Power Services Corporation

870 Confederation St.
Sarnia, ON
N7T 2E5

Mark Vanderheide

T: 519-337-8201
Ext 2234
F: 519-332-3878


Alectra Utilities Corporation

55 John St. North Hamilton, ON L8R 3M8

Rob Henschel

T: 905-317-4597
F: 905-522-8373



Essex Energy Corporation

2199 Blackacre Drive,
Suite 200
Oldcastle, ON
N0R 1L0

Patrick Casey

T: 519-560-7214


Inclusion of a metering service provider on this list confirms only that the metering service provider has been determined, in accordance with the registration process described in appropriate market rules and market manuals. IESO otherwise makes no, and expressly disclaims any, representation or warranty as to the character, financial integrity, relative quality or other attribute of a metering service provider included on this list.