ECO2 Appropriate methodologies

Publication date
7th June 2016
Information types
Policy areas

For each ECO measure a supplier notifies to us, it must provide the associated ECO savings.

Calculating ECO savings

Generally, carbon and cost savings are produced by calculating the annual carbon saving in accordance with Standard Assessment Procedure (SAP) or Reduced data Standard Assessment Procedure (RdSAP) methodologies.

For measures not in SAP or RdSAP

Where SAP or RdSAP do not contain a methodology to calculate the savings for a particular measure, a supplier can apply for us to approve an appropriate methodology to calculate the savings.

The tables below detail appropriate methodologies we have approved. Other suppliers wishing to use an approved appropriate methodology should apply in writing to us at eco@ofgem.gov.uk.

ECO1 approved appropriate methodologies

The following appropriate methodologies have been approved for ECO1. These apply to measures installed up to and including 31 March 2015.

AM ref number

Description

Date approved

Obligation period

AM0001

This appropriate methodology can be used to calculate the savings achieved by measures installed in multiple occupancy premises, for example, student halls or hostels, where these premises meet the definition of domestic premises (See the ECO1.2 Supplier Guidance). These premises cannot be modelled in SAP or RdSAP, as such the Simplified Building Energy Model (SBEM) can be used to calculate savings. The relevant measure lifetimes and in-use factors are then applied to calculate the lifetime savings.

2 July 2015

ECO1

ECO2 approved appropriate methodologies

The following appropriate methodologies have been approved for ECO2. These apply to measures installed from 1 April 2015 and up to and including 31 March 2017.

AM ref number Description Date approved Obligation period
AM0002

This appropriate methodology can be used to calculate the savings achieved by measures installed in multiple occupancy premises, for example student halls or hostels, where these premises meet the definition of domestic premises (see the ECO2 Guidance: Delivery). These premises cannot be modelled in SAP or RdSAP, as such the Simplified Building Energy Model (SBEM) can be used to calculate savings. The relevant measure lifetimes and in-use factors are then applied to calculate the lifetime savings.

17 August 2015 ECO2