The EEPI was set up to encourage larger enterprises to invest further in energy efficiency. Through the initiative, organisations are encouraged to sign a voluntary agreement with the Energy & Water Agency, committing to implement measures that increase energy efficiency on an annual basis. 

The 25 signatories to the EEPI are:

Actavis  Malta, AX Holdings Ltd, Bank of Valletta, Baxter Trading Co. Ltd, Besedo, Carlo Gavazzi (Malta) Ltd, De La Rue Currency and Security Prints, DHL, Eden Leisure Group,  Elepac Ltd, Enemalta plc, Foster Clark Products Ltd, G4S Security Service (Malta) Limited, Hotset (Malta) Ltd, HSBC Bank plc, Malta Freeport Terminals, Malta International Airport, Methode Electronics Malta, MSC Technologies, Playmobil Malta, Simonds Farsons Cisk plc, ST Microelectronics, Toly Products Ltd, Trelleborg Sealing Solutions (Malta) Ltd, and Water Services Corporation.