ECO3 Alternative methodologies

Publication date
31st January 2019
Information types
Policy areas

For each ECO measure a supplier notifies to us, it must provide the associated ECO savings. Under ECO3 there are four ways to score measures:

  • Deemed scores
  • SAP/RdSAP (DHS only)
  • Demonstration actions, innovation measures, and monitored measures
  • Alternative methodology.

DHS measures

Where SAP/RdSAP do not contain a methodology for calculating the savings for a particular DHS measure, a supplier may apply to us for approval of an alternative methodology to calculate savings. DHS measures cannot be scored using either deemed scores or the innovation and monitored measures routes, but they can be a demonstration action.

Other measures

Generally, non-DHS measures are scored using deemed scores. Where there is no deemed score for a measure, a supplier may apply to us for a new set of deemed scores or an alternative scoring methodology. Suppliers should also consider whether the demonstration action, innovation measure or monitored measure routes could be applicable.

Applying for an alternative methodology or new deemed score

Applications must be made by an obligated energy supplier. Suppliers should contact us if they wish to make an application. For further information on alternative methodologies see Chapter 5 of the ECO3 Guidance: Delivery document.

Approved alternative methodologies and deemed scores

Once an application is approved for an alternative methodology or new deemed score it will be published below, and can be used by any supplier.