A new inquiry into household energy efficiency and demand reduction has been launched in the UK.
The Energy Company Obligation (ECO) initiative is also due to end in March 2017.
The Energy and Climate Change Committee said it will be investigating what lessons can be learnt from these and previous energy efficiency schemes.
“Energy efficiency and demand reduction is one of the most cost effective ways to cut carbon emissions, improve energy security and reduce consumer bills”, it stated.
The committee is inviting views on why previous approaches to energy efficiency have failed to deliver “significant” results, what lessons can be learnt from the schemes and how the UK’s performance compares with other countries.
It added: “The evidence received will feed into our scrutiny of energy efficiency policies over the course of this Parliament.”
The deadline for submissions is 12th October 2015.
The committee is also investigating if increased uncertainty around energy policy is undermining investor confidence in the UK.