Editor at 17:49, 5 November 2025

2025-11-05T17:49:20Z

← Older revision		Revision as of 17:49, 5 November 2025
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−	ORCalc is the name of the UK government-mandated software which is used to generate Display Energy Certificate (DEC) and Advisory Reports for buildings in the UK. ORCalc stands for Operational Rating (OR) calculation because it is based on a buildings actual operation energy consumption data. This is as opposed to for example Energy Performance Certificates (EPCs) which look very similar but are generated using modelled building energy based either the Standard Assessment Procedure (SAP) methodology or Simplified Building Energy Model (SBEN)on a variety of assumptions, similarly SBEM.	+	ORCalc is the name of the UK government-mandated software which is used to generate Display Energy Certificate (DEC) and Advisory Reports for buildings in the UK. ORCalc stands for Operational Rating (OR) calculation because it is based on a buildings actual operation energy consumption data.

−	~~It calculates~~ the ~~Operational Rating~~ (OR) and ~~helps assessors create the necessary reports based on~~ a ~~building's energy consumption data~~.	+	This is as opposed to for example Energy Performance Certificates (EPCs) which look very similar but are generated using modelled building energy based either the Standard Assessment Procedure (SAP) methodology or Simplified Building Energy Model (SBEM) and a variety of assumptions.

−	~~Users: Primarily~~ used by energy assessors who are qualified to produce DECs.	+	It can be downloaded for free but is primarily used by energy assessors who are qualified and competent in the use of the software to produce DECs.

−	~~Requirement~~: ~~To produce DECs, users must be competent in using this approved software, which can be downloaded for free~~.	+	For further information visit: [https://www.gov.uk/government/publications/display-energy-certificates-and-advisory-reports-for-public-buildings Guidance Display Energy Certificates and advisory reports for public buildings]

−	[[Category:~~Articles_needing_more_work~~]]	+	aswell as [https://www.uk-ncm.org.uk/index.jsp https://www.uk-ncm.org.uk/index.jsp] or [https://www.ncm-pcdb.org.uk/sap/page.jsp?id=7 https://www.ncm-pcdb.org.uk/sap/page.jsp?id=7]
		+
		+	= Related articles on Designing Buildings =
		+
		+	* Accredited energy assessor.
		+	* Air tightness.
		+	* Are Energy Performance Certificates accurate?
		+	* BS EN 15232 Energy performance of buildings: impact of building automation, controls and building management.
		+	* Building performance.
		+	* Building performance metrics.
		+	* Carbon ratings for buildings.
		+	* Certificates in the construction industry.
		+	* CRC Energy Efficiency Scheme.
		+	* Display energy certificate.
		+	* Emission rates.
		+	* Energy certificates for buildings.
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		+	* Energy performance certificate EPC.
		+	* Energy Performance of Buildings Directive.
		+	* Energy related products regulations.
		+	* Energy Savings Opportunity Scheme.
		+	* Energy targets.
		+	* Green mortgage.
		+	* Home information pack HIP.
		+	* Homebuyer Report.
		+	* How are EPCs produced?
		+	* How much does it cost to sell my home.
		+	* Listed buildings.
		+	* Minimum energy efficiency standard (MEES).
		+	* Minimum energy efficiency standard regulations for domestic and non-domestic buildings.
		+	* NABERS UK.
		+	* National Calculation Method.
		+	* National Retrofit Strategy NRS.
		+	* Non-domestic private rented property minimum standard.
		+	* Passivhaus vs SAP.
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		+	* Private rented sector regulations and traditional buildings.
		+	* Retrofit.
		+	* Simplified Building Energy Model.
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		+	* The Home Energy Model and Future Homes Standard assessment wrapper.
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		+	* Energy performance certificate EPC.
		+
		+	[[Category:DCN_Commentary]] [[Category:DCN_Definition]] [[Category:DCN_Software]] [[Category:Public_procedures]] [[Category:Roles_/_services]]

Editor: Created page with "ORCalc is the name of the UK government-mandated software which is used to generate Display Energy Certificate (DEC) and Advisory Reports for buildings in the UK. ORCalc stands f..."

2025-11-05T10:26:56Z

Created page with "ORCalc is the name of the UK government-mandated software which is used to generate Display Energy Certificate (DEC) and Advisory Reports for buildings in the UK. ORCalc stands f..."

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ORCalc is the name of the UK government-mandated software which is used to generate Display Energy Certificate (DEC) and Advisory Reports for buildings in the UK. ORCalc stands for Operational Rating (OR) calculation because it is based on a buildings actual operation energy consumption data. This is as opposed to for example Energy Performance Certificates (EPCs) which look very similar but are generated using modelled building energy based either the Standard Assessment Procedure (SAP) methodology or Simplified Building Energy Model (SBEN)on a variety of assumptions, similarly SBEM.

It calculates the Operational Rating (OR) and helps assessors create the necessary reports based on a building's energy consumption data.

Users: Primarily used by energy assessors who are qualified to produce DECs.

Requirement: To produce DECs, users must be competent in using this approved software, which can be downloaded for free.

[[Category:Articles_needing_more_work]]

ORCalc - Revision history

Editor at 17:49, 5 November 2025

Editor: Created page with "ORCalc is the name of the UK government-mandated software which is used to generate Display Energy Certificate (DEC) and Advisory Reports for buildings in the UK. ORCalc stands f..."