Known Certified Organizations

The list below was compiled by accessing publicly available information and only lists certified organizations known to TC251. If your organization is ISO 55001 certified, we encourage you to contact us for inclusion in this list.

Note that ISO does not maintain a central registry of ISO 55001 certified organizations, nor can it guarantee the correctness of the information below.


Organization Sector Country  
AboitizPower Oil BU Electrical Philippines Link
Engineered Energy Co., Ltd. / Shinsozagi Power Station Electrical Japan Link
Hedcor/Aboitiz Electrical Philippines Link
Koei Energy Electrical Japan Link
Pacific Consultants Electrical Japan Link
PLN Transmisi Jawa Bagian Barat Electrical Indonesia Link
Reliance Infrastructure Electrical India Link
SN Aboitiz - Benguet Electrical Philippines Link
SN Aboitiz - Magat Electrical Philippines Link
State Grid Power Research Institute Electrical China Link
Tanabu Group Electrical Japan Link
TNB Electrical Malaysia Link
Vedanta Electrical India Link
Fuso Engineering Japan Link
Kumonos Engineering Japan Link
Sodexo Facilities Management China Link
Towngas Gas Hong Kong Link
Japan Water Agency Government Japan Link
Institut Jantung Negara Health Services Malaysia Link
Ashinoko Skyline Infrastructure Japan Link
Gran Vista Hotel & Resort / Nippon Koei Co., Ltd. Infrastructure Japan Link
Nagaoka Co., Ltd. Infrastructure Japan Link
NIPPO Co., Ltd. /  Infrastructure Japan Link
Oriental Consultants Co., Ltd. Infrastructure Japan Link
PASCO Corporation Infrastructure Japan Link
Rehabilitation Technology Consultant Co., Ltd. Infrastructure Japan Link
Shiraito Highland Way Infrastructure Japan Link
Water Resources Organization Infrastructure Japan Link
Yachiyo Engineering Co., Ltd. Infrastructure Japan Link
Balco Manufacturing India Link
Sekisui Manufacturing Japan Link
Sinotruk Jinan Fuqiang Power Co., Ltd. Manufacturing China Link
China Petroleum Pipeline Material and Equipment Co., Ltd Oil & Gas China Link
Delhi International Airport AGL Ports & Airports India Link
Hong Kong International Airport Ports & Airports Hong Kong Link
Johor Port Ports & Airports Malaysia Link
Mengniu Diary Process China Link
MTR Transport Hong Kong Link
SMRT Road Holdings Transport Singapore Link
SMRT Rail Transport Singapore Link
Aichi Prefecture Water & Wastewater Japan Link
Asco Daito Co., Ltd. Water & Wastewater Japan Link
Asian Air Observation Co., Ltd. Water & Wastewater Japan Link
Central Design Engineering Laboratory Co., Ltd. Water & Wastewater Japan Link
Environmental System Service Co., Ltd. Water & Wastewater Japan Link
Estim Corporation Water & Wastewater Japan Link
Fujino Kogyo Co., Ltd. Water & Wastewater Japan Link
HK Drainage Services Water & Wastewater Hong Kong Link
International Kaiun Kaisha Water & Wastewater Japan Link
JFE Engineering Water & Wastewater Japan Link
Kakimoto Shokai Co., Ltd. Water & Wastewater Japan Link
MetaWater Water & Wastewater Japan Link
Nihon Suido Water & Wastewater Japan Link
Nihon Suiko Sekkei Water & Wastewater Japan Link
Nikkiso Co., Ltd. / Io Corporation Water & Wastewater Japan Link
Nishihara Environment Water & Wastewater Japan Link
NJS E&M Co., Ltd. Water & Wastewater Japan Link
Sanki Kankyo Service Water & Wastewater Japan Link
Sendai City Water & Wastewater Japan Link
Shin Nihon Consultant Co., Ltd. Water & Wastewater Japan Link
Shinko Environmental Solutions Co., Ltd. Water & Wastewater Japan Link
Stem Water & Wastewater Japan Link
Swing Water & Wastewater Japan Link
Three Aircraft Environmental Service Co., Ltd. Water & Wastewater Japan Link
Tokyo Design Office Co., Ltd. Water & Wastewater Japan Link
Tubu Kogyo Co., Ltd. Water & Wastewater Japan Link
Zhengzhou Sewage Purification Co., Ltd. Water & Wastewater China Link


Organization Sector Country  
ActewAGL Electrical Australia Link
Jemena Electrical Australia Link
Transgrid Electrical Australia Link
Unison Electrical New Zealand Link
ASC Engineering Australia Link
McKay Drilling Engineering Australia Link
Raytheon Engineering Australia Link
Serco Engineering Australia Link
Surtech Systems Engineering Australia Link
Assetlink Holdings Facilities Management Australia Link
Babcock Land Business Unit Facilities Management Australia Link
Downer/MCC Facilities Management Australia Link
GEO Group - Fulham Facilities Management Australia Link
GEO Group - Head Office Facilities Management Australia Link
GEO Group - Ravenhall Facilities Management Australia Link
Gold Coast Hospital Facilities Management Australia Link
Honeywell Facilities Management Australia Link
Programmed Facility Management - Hopkins Correctional Facility Facilities Management Australia Link
RMIT University Facilities Management Australia Link
Egis Road Operation Infrastructure Australia Link
Ventia Infrastructure Australia Link
Carey Mining Mining Australia Link
Piacentini Mining Australia Link
Ausdrill NorthWest Oil & Gas Australia Link
Easternwell Oil & Gas Australia Link
Bombardier Transportation Transport Australia Link
Comfortdelgro Transport Australia Link
Downer EDI Rail Transport Australia Link
Fulton Hogan Transport Australia Link
Keolis Downer Bus and Coach Lines Transport Australia Link
Metro Trains Melbourne Transport Australia Link
Sydney Trains Transport Australia Link
Transit NSW Liverpool Transport Australia Link
Gladstone Water Water & Wastewater Australia Link
Hunter Water Water & Wastewater Australia Link
Suez Water PTY Water & Wastewater Australia Link
Veolia Water Utilities Water & Wastewater Australia Link
Watersure Water & Wastewater Australia Link
Welldrill Water & Wastewater Australia Link


Organization Sector Country  
Alpiq Electrical Switzerland Link
Altis Electrical Switzerland Link
Amprion Electrical Germany Link
Caruna Electrical Finland Link
Dong Electrical Denmark Link
Eirgrid Electrical Ireland Link
Elenia Electrical Finland Link
Eneco Electrical Netherlands Link
Energinet Electrical Denmark Link
Enexis Electrical Netherlands Link
ESB Networks Electrical Ireland Link
Fingrid Electrical Finland Link
Liander Electrical Netherlands Link
National Grid Electricity Transmission Electrical UK Link
SP Energy Electrical UK Link
SSE Electrical UK Link
Statnett Electrical Norway Link
Stromnetz Hamburg Electrical Germany Link
Suek Electrical Russia Link
TenneT Electrical Netherlands Link
Terna Electrical Italy Link
UK Power Networks Electrical UK Link
Western Power Distribution Electrical UK Link
BAE Military Systems Engineering UK Link
Kessel Engineering Netherlands Link
BAM Engineering & Construction Netherlands Link
Van Doorn Engineering & Construction Netherlands Link
Vermeulen Engineering & Construction Netherlands Link
BTC Facilities Management Slovenia Link
Combinatie VGK Facilities Management Netherlands Link
Engie ASML Facilities Management Netherlands Link
Greensolver Facilities Management France Link
Komfort EBV Facilities Management Netherlands Link
Krinkels Facilities Management Netherlands Link
RHDHV - Chemelot Facilities Management Netherlands Link
RHDHV - Yara Facilities Management Netherlands Link
Sodexo Facilities Management Spain Link
Sodexo Facilities Management UK Link
Southbank Centre Facilities Management UK Link
UBS Facilities Management UK Link
Cadent Gas UK Link
ESP Utilities Group Gas UK Link
National Grid Gas Distribution Gas UK Link
Northern Gas Networks Gas UK Link
SGN Gas UK Link
Wales & West Gas Networks Gas UK Link
Zebra Netwerk Gas Netherlands Link
Stedin Gas, Electrical Netherlands Link
Cascais Ambiente Government Portugal Link
Province Noord Holland Government Netherlands Link
Province Overijssel Government Netherlands Link
Provincie Zuid Holland Government Netherlands Link
SMAS Almada Government Portugal Link
Viersen District Government Germany Link
Coentunnel Infrastructure Netherlands Link
Egis Road Operation Infrastructure Portugal Link
Eurovia Vinci Infrastructure UK Link
Heijmans Infrastructure Netherlands Link
Ministerie van Infrastructuur en Waterstaat Midden-Nederland, district Noord Infrastructure Netherlands Link
Thames Estuary Asset Management - TEAM 2100 Infrastructure UK Link
Vialis Infrastructure Netherlands Link
VolkerInfra Schiphol Infrastructure Netherlands Link
Forbo Flooring Manufacturing UK Link
Slavneft-Megionneftegaz Oil & Gas Russia Link
ABBVie Pharmaceuticals Ireland Link
Dublin Airport Ports & Airports Ireland Link
Geneva Airport Ports & Airports Switzerland Link
London Heathrow Ports & Airports UK Link
Rotterdam Port Ports & Airports Netherlands Link
Rotterdam World Gateway Ports & Airports Netherlands Link
Service Terminal Rotterdam Ports & Airports Netherlands Link
Southampton Airport Ports & Airports UK Link
London Underground Transport UK Link
NATS Transport UK Link
NS Techniek Transport Netherlands Link
RET Transport Netherlands Link
Siemens Mobility Transport Netherlands Link
Anglian Water Water & Wastewater UK Link
Aquafin Water & Wastewater Belgium Link
Babcock Water & Wastewater UK Link
Delfluent Water & Wastewater Netherlands Link
Evides Water & Wastewater Netherlands Link
Hoogheemraadschap Holland Noorderkwartier Water & Wastewater Netherlands Link
PWN Water & Wastewater Netherlands Link
Scottish Water Water & Wastewater UK Link
Suez - Bahia de Palma Water & Wastewater Spain Link
Welsh Water - Dwr Cymru Water & Wastewater UK Link
Wessex Water Water & Wastewater UK Link
Yorkshire Water Water & Wastewater UK Link


Organization Sector Country  
Oman Electricity Transmission Company (OmanGrid) Electrical Oman Link
Transco Electrical UAE Link
DEWA Electrical, Water UAE Link
EMAAR Asset Managenent Facilities Management UAE Link
Farnek Facilities Management UAE Link
National Archives Government UAE Link
Quant Gulf Equipment and General Maintenance Industrial Process Maintenance UAE Link
Road Transport Authority Infrastructure UAE Link
Debswana MCM Mining Botswana Link
ADCO Oil & Gas UAE Link
Petrochemical Industries Complex Oil & Gas Kuwait Link
Hamad International Airport (HIA) Ports & Airports Qatar Link
Besix Moalajah Water & Wastewater UAE Link


Organization Sector Country  
AES Centro America Electrical Panama Link
AES Chivor Electrical Colombia Link
AES Dominicana Electrical Dominican Republic Link
AES Mexico Electrical Mexico Link
AES Puerto Rico Electrical USA Link
AES Tiete Electrical Brazil Link
Eletropaulo Electrical Brazil Link
Babcock - Banco do Brasil Facilities Management Brazil Link
PG&E Gas USA Link
Beneficencia Portuguesa Health Services Brazil Link
University Health System Health Services USA Link
Iron Ore Company of Canada Mining Canada Link
Atlanta Airlines Terminal Corporation Ports & Airports USA Link
Metropolitan Atlanta Rapid Transit Authority Transport USA Link
Agua y Saneamientos Argentinos Water & Wastewater Argentina Link
Edam - Suez Water & Wastewater Chile Link