Administrador del Mercado Mayorista (Guatemala)
Alberta Electric System Operator (Canada)
APX B.V. (The Netherlands)
Amsterdam Power Exchange - UK (United Kingdom)
Borzen d.o.o. (Slovenia)
CAMMESA (Argentina)
CCEE – Camara de Com. de Energia Elétrica (Brazil)
CNDC - Comite Nacional de Despacho de Carga (Bolivia)
Coes Sinac (Peru)
Corporaciòn Cenace (Ecuador)
EEX - European Energy Exchange (Germany)
ELEXON Ltd. (United Kingdom)
Energy Exchange Austria (Austria)
Energy Market Authority (Singapore)
Energy Market Company Pte Ltd (Singapore)
ESB National Grid (Ireland)
ETESA (Panama)
IESO Power to Ontario (Canada)
ICE (United Kingdom)
ISA (Colombia)
Korea Power Exchange (Republic of Korea)
National Grid Company Limited (United Kingdom)
NEMMCO - National Electricity Market Management Company (Australia)
NORDPOOL - The Nordic Power Exchange (Norway)
OMEL – Operador del mercado ibérico de energìa (Spain)
OMIP - Operador del mercado ibérico de energìa (Portugal)
OPCOM -Operatorul Pietei de Electricitate din România (Romania)
Operátor trhu Elektrinou, a.s. (Czech Republic)
PJM Interconnection (United States)
PowerNext (France)
PPE - Polish Power Exchange (Poland)
The Marketplace Company M-co (New Zeland)
Unidad de Transacciones, S.A.. (El Salvador)
XM Compania de Expertos en Mercados (Colombia)
Transpower NZ Ltd (New Zeland)
TNB - Transmission Sdn Bhd (Malaysia)