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Consultations

MCS Consultations

MCS periodically issues consultations as a feedback loop for Standards development. This usually takes place when developing or updating MCS Scheme documents.

CONSULTATIONS

Feedback loop for Standards development

MCS periodically issues consultations. This usually takes place when developing or updating MCS Scheme documents.

Date	Deadline for responses	Description of Consultation	Status	Summary of Responses
Date 12/02/2025	Deadline for responses 12/03/2025	Description of Consultation MCS has published a four-week consultation on the requirement for a design and installation standard and a pre-sale System Performance Estimate (SPE) methodology for electrically charged Thermal Energy Storage Systems (TESS).	Status Open	Summary of Responses Find the documentation needed to respond here.
Date 12/02/2024	Deadline for responses 11/03/2024	Description of Consultation A four-week consultation on changes to MIS 3005-D: The Heat Pump Design Standard which aim to clarify the circumstances under which a hybrid heat pump heating system would be compliant with MCS requirements. Read more here	Status Closed	Summary of Responses Please read our article on the summary of changes here. View the updated MIS3005-D here.
Date 30/11/2023	Deadline for responses 26/01/2024	Description of Consultation MCS 020 – Planning Standard for Permitted Development MCS consulted on the planning requirements for Air Source Heat Pumps in domestic properties. Read more here.	Status Closed	Summary of Responses Read the consultation response here. MCS 020 has now been updated, read the latest update and view documentation here.
Date 05/06/2023	Deadline for responses 17/07/2023	Description of Consultation MCS consulted on the redevelopment of the Scheme. The proposals outlined in the consultation aimed to reduce the complexity of the Certification Scheme that sit around MCS Standards, and to reset the Scheme’s consumer protections to give people the confidence that they need to engage with small-scale renewables.	Status Closed	Summary of Responses Please view proposal outcomes on the Scheme consultation page here.