Here you can search for the most Frequently Asked Questions (FAQs) for several areas across the site, including our various groups, events, services and improvement programmes. You can search for a specific FAQ category using the dropdown menu on the right, and view all of the relevant FAQs for any category by selecting the corresponding ‘View all’ button.

If you are unable to find what you need, please don’t hesitate to contact us.

About MOSL

Bilateral Transactions Programme

Business planning

Certificates and IP Addresses


Code Change Committee

Data Assurance Service


Late Payments

Market Entry Assurance (MEA)

Market Exit - Interim Supply Allocation

Market Improvement Fund

Market Performance Framework (MPF) Reform

Market Re-assurance

Meter Reads

MO Portal

Operations and Release Working Group (ORWG)


Partners Accounts

Retailer Wholesaler Group (RWG)


Service Desk

Strategic Panel



Learn more about the changes being made to the market codes.

Learn more


View all of the changes that are currently in consultation.

Learn more

Training and Guidance

Visit our Training and Guidance hub.

Learn more

Keep up to date

Receive the most relevant and up-to-date communications from MOSL by signing up to our mailing list.