Building primary energy rate - Revision history

Designing Buildings at 07:45, 28 January 2025

2025-01-28T07:45:05Z

← Older revision		Revision as of 07:45, 28 January 2025
Line 17:		Line 17:
	* Energy losses during transmission and distribution.		* Energy losses during transmission and distribution.

−	~~===~~ To calculate BPER, the energy demand of the building is modelled using a standard methodology, typically the Standard Assessment Procedure (SAP) for dwellings or the Simplified Building Energy Model (SBEM) for non-dwellings. The energy is multiplied by primary energy factors (PEFs), which reflect the upstream energy losses. These factors depend on the type of energy source (e.g., electricity, natural gas, oil). ~~===~~	+	To calculate BPER, the energy demand of the building is modelled using a standard methodology, typically the Standard Assessment Procedure (SAP) for dwellings or the Simplified Building Energy Model (SBEM) for non-dwellings. The energy is multiplied by primary energy factors (PEFs), which reflect the upstream energy losses. These factors depend on the type of energy source (e.g., electricity, natural gas, oil).

	Approved Document L specifies that a new building’s BPER must not exceed a defined target primary energy rate (TPER). The TPER is a benchmark based on a notional building of the same type, designed to ensure new buildings achieve a minimum standard of energy efficiency.		Approved Document L specifies that a new building’s BPER must not exceed a defined target primary energy rate (TPER). The TPER is a benchmark based on a notional building of the same type, designed to ensure new buildings achieve a minimum standard of energy efficiency.

Designing Buildings at 07:44, 28 January 2025

2025-01-28T07:44:41Z

← Older revision		Revision as of 07:44, 28 January 2025
Line 1:		Line 1:
−	[https://www.gov.uk/government/publications/conservation-of-fuel-and-power-approved-document-l Approved document L, Conservation of Fuel and Power, Volume 2: Buildings other than dwellings], 2021 edition incorporating 2023 amendments, defines building primary energy rate as: ‘Expressed as kWhPE/(m^2.year) and determined using the approved methodology.’	+	[https://www.gov.uk/government/publications/conservation-of-fuel-and-power-approved-document-l Approved document L, Conservation of Fuel and Power, Volume 2: Buildings other than dwellings], 2021 edition incorporating 2023 amendments, defines building primary energy rate (BPER) as: ‘Expressed as kWhPE/(m^2.year) and determined using the approved methodology.’
		+
		+	It is a metric used in the UK to assess the energy performance of a building as part of compliance with Building Regulations, particularly under Part L, which deals with the conservation of fuel and power. It was introduced as part of the 2021 changes to Part L, aligning with the UK's adoption of the EU Energy Performance of Buildings Directive (EPBD) and its focus on primary energy as a key performance indicator.
		+
		+	The BPER:
		+
		+	* Encourages the use of energy-efficient building designs.
		+	* Incentivises low-carbon and renewable energy sources.
		+	* Supports the UK's commitment to reducing carbon emissions and achieving net-zero goals.
		+
		+	The BPER quantifies the primary energy consumption of a building in kilowatt-hours per square meter per year over its expected use. It includes energy used for heating, cooling, hot water, lighting, and ventilation, as well as losses in energy generation, transmission, and distribution.
		+
		+	Primary energy refers to the total energy required to deliver usable energy to the building, including:
		+
		+	* Energy consumed on-site.
		+	* Energy losses during generation (e.g., at a power plant).
		+	* Energy losses during transmission and distribution.
		+
		+	=== To calculate BPER, the energy demand of the building is modelled using a standard methodology, typically the Standard Assessment Procedure (SAP) for dwellings or the Simplified Building Energy Model (SBEM) for non-dwellings. The energy is multiplied by primary energy factors (PEFs), which reflect the upstream energy losses. These factors depend on the type of energy source (e.g., electricity, natural gas, oil). ===
		+
		+	Approved Document L specifies that a new building’s BPER must not exceed a defined target primary energy rate (TPER). The TPER is a benchmark based on a notional building of the same type, designed to ensure new buildings achieve a minimum standard of energy efficiency.

	= Related articles on Designing Buildings =		= Related articles on Designing Buildings =
Line 11:		Line 31:
	* Hot water.		* Hot water.
	* Power.		* Power.
		+	* Simplified Building Energy Model.
		+	* Standard Assessment Procedure.

−	[[Category:DCN_Definition]] [[Category:Definitions]]	+	[[Category:DCN_Definition]] [[Category:Definitions]] [[Category:Regulations]] [[Category:Standards_/_measurements]] [[Category:Sustainability]]

Designing Buildings: Created page with "[https://www.gov.uk/government/publications/conservation-of-fuel-and-power-approved-document-l Approved document L, Conservation of Fuel and Power, Volume 2: Buildings other than..."

2025-01-28T07:40:10Z

Created page with "[https://www.gov.uk/government/publications/conservation-of-fuel-and-power-approved-document-l Approved document L, Conservation of Fuel and Power, Volume 2: Buildings other than..."

New page

[https://www.gov.uk/government/publications/conservation-of-fuel-and-power-approved-document-l Approved document L, Conservation of Fuel and Power, Volume 2: Buildings other than dwellings], 2021 edition incorporating 2023 amendments, defines building primary energy rate as: ‘Expressed as kWhPE/(m^2.year) and determined using the approved methodology.’

= Related articles on Designing Buildings =

* Approved document L.
* Approved documents.
* Building regulations.
* Energy.
* Fuel.
* Heating.
* Hot water.
* Power.

[[Category:DCN_Definition]] [[Category:Definitions]]