Energy Companies Obligation (ECO): Appropriate Guarantees

5th July, 2013

Cavity and solid wall insulation systems have respective standard lifetimes of 42 and 36 years where an installation is accompanied by an appropriate guarantee. An appropriate guarantee is one which meets all of the four criteria listed in chapter eight of the Energy Companies Obligation (ECO): Guidance for Suppliers, which is available on our website.

This document lists the guarantees that Ofgem has reviewed, and that Ofgem considers meet the criteria for an appropriate guarantee. If a supplier uses a guarantee listed here, Ofgem will, when assessing the savings notified by the supplier for cavity or solid wall insulation (and subject to no amendments being made to the listing as described below), accept that the guarantee is an appropriate guarantee.

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