British Standards Institution

Sector: Sustainability

Overview: Under the direction of the Standards Policy and Strategy Committee, is responsible for the UK input to ISO/TC 180 and CEN/TC 312 and for standards affecting the use of solar heating, having regard to technical and legislative aspects both in the UK and EU. It is also responsible, under the direction of the British Electro-technical Committee (BEC) for the UK input to IEC/TC 117 and CLC/SR 117

Committee standards activity

In Progress (40)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
PNW TS 117-242 ED1:	Solar thermal electric plants - Part 4-4: Technical specifications for receiver coatings of solar power tower plants Categories: Information management \| Standardization. General rules Proposal begins : 2025-11-24	Proposal
PD ISO/TR 26484	Good practices of solar combisystem (SCS) Categories: Unclassified documents Proposal begins :	Proposal
PD IEC/TS 62862-1-3 Ed.2.0	Solar thermal electric plants. Part 1-3: General - Data format for meteorological data sets Categories: Unclassified documents Drafting begins : 2026-04-20	Drafting
PD IEC/TS 62862-1-2 Ed.2.0	Solar thermal electric plants. Part 1-2: General - Creation of annual solar radiation data set for solar thermal electric (STE) plant simulation Categories: Unclassified documents Drafting begins : 2026-04-20	Drafting
PD IEC/TS 62862-1-1:2018	Solar thermal electric plants. - Part 1-1: Terminology Categories: Solar energy engineering Approval begins :	Approval
PD IEC/TS 62862-1-1 Ed.2.0	Solar thermal electric plants. Part 1-1: Terminology Categories: Unclassified documents Drafting begins : 2026-04-20	Drafting
IEC 117/222/NP	Solar thermal electric plants – Part 2-3: Protocol for testing sensible and latent thermal energy storage prototypes Categories: Information management \| Standardization. General rules Proposal begins : 2025-02-25	Proposal
IEC 117/209/NP	Solar thermal electric plants – Biphenyl/ Diphenyl oxide-based heat transfer fluids for use in line-focus concentrated solar power applications Categories: Information management \| Standardization. General rules Proposal begins : 2024-09-02	Proposal
IEC 117/178/NP	Solar thermal electric plants – Part 2-2: Thermal energy storage systems – Technical requirements for molten salt used as heat storage and heat transfer medium. Categories: Information management \| Standardization. General rules \| Engineering \| Energy and heat transfer engineering \| Solar energy engineering Proposal begins : 2023-04-04	Proposal
BS ISO 9553	Solar energy — Methods of testing preformed rubber seals and sealing compounds used in collectors Categories: Unclassified documents Drafting begins : 2027-06-11	Drafting

Published (38)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
PD ISO/TR 9901:2021	Solar energy. Pyranometers. Recommended practice for use Categories: Solar energy engineering Published standard begins : 2021-08-18	Published standard
PD IEC/TS 62862-1-3:2017	Solar thermal electric plants. General. Data format for meteorological data sets Categories: Solar energy engineering Published standard begins : 2017-12-22	Published standard
PD IEC/TS 62862-1-2:2017	Solar thermal electric plants. General. Creation of annual solar radiation data set for solar thermal electric (STE) plant simulation Categories: Solar energy engineering Published standard begins : 2017-12-22	Published standard
PD IEC TS 62862-2-1:2021	Solar thermal electric plants. Thermal energy storage systems. Characterization of active, sensible systems for direct and indirect configurations Categories: Solar energy engineering Published standard begins : 2021-02-09	Published standard
BS ISO 9847:2023	Solar energy. Calibration of pyranometers by comparison to a reference pyranometer Categories: Solar energy engineering Published standard begins : 2023-01-27	Published standard
BS ISO 9846:2025	Solar energy. Calibration of a pyranometer using a pyrheliometer Categories: Solar energy engineering Published standard begins : 2025-08-15	Published standard
BS ISO 9845-1:2022	Solar energy. Reference solar spectral irradiance at the ground at different receiving conditions. Direct normal and hemispherical solar irradiance for air mass 1,5 Categories: Solar energy engineering Published standard begins : 2022-08-23	Published standard
BS ISO 9459-5:2007	Solar heating. Domestic water heating systems. System performance characterization by means of whole-system tests and computer simulation Categories: Solar energy engineering \| Heaters. Other Published standard begins : 2007-09-05	Published standard
BS ISO 9459-4:2013	Solar heating. Domestic water heating systems. System performance characterization by means of component tests and computer simulation Categories: Solar energy engineering \| Heaters. Other Published standard begins : 2013-02-20	Published standard
BS ISO 9060:2018	Solar energy. Specification and classification of instruments for measuring hemispherical solar and direct solar radiation Categories: Solar energy engineering Published standard begins : 2018-11-15	Published standard

Withdrawn (26)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
DD ENV 12977-3:2001	Thermal solar systems and components. Custom built systems. Performance characterisation of stores for solar heating systems Categories: Solar energy engineering \| Heaters. Other Withdrawn begins : 2009-08-17	Withdrawn
DD ENV 12977-2:2001	Thermal solar systems and components. Custom built systems. Test methods Categories: Solar energy engineering \| Heaters. Other Withdrawn begins : 2010-04-27	Withdrawn
DD ENV 12977-1:2001	Thermal solar systems and components. Custom built systems. General requirements Categories: Solar energy engineering \| Heaters. Other Withdrawn begins : 2010-04-27	Withdrawn
DD CEN/TS 12977-5:2010	Thermal solar systems and components. Custom built systems. Performance test methods for control equipment Categories: Solar energy engineering \| Heaters. Other Withdrawn begins : 2012-04-17	Withdrawn
DD CEN/TS 12977-4:2010	Thermal solar systems and components. Custom built systems. Performance test methods for solar combistores Categories: Solar energy engineering \| Heaters. Other Withdrawn begins : 2012-05-01	Withdrawn
DD CEN/TS 12977-2:2010	Thermal solar systems and components. Custom built systems. Test methods for solar water heaters and combisystems Categories: Solar energy engineering \| Heaters. Other Withdrawn begins : 2012-04-17	Withdrawn
DD CEN/TS 12977-1:2010	Thermal solar systems and components. Custom built systems. General requirements for solar water heaters and combisystems Categories: Solar energy engineering \| Heaters. Other Withdrawn begins : 2012-04-17	Withdrawn
BS EN ISO 9806:2017	Solar energy. Solar thermal collectors. Test methods Categories: Solar energy engineering Withdrawn begins : 2025-10-09	Withdrawn
BS EN ISO 9806:2013	Solar energy. Solar thermal collectors. Test methods Categories: Solar energy engineering Withdrawn begins : 2018-02-07	Withdrawn
BS EN ISO 9488:2000	Solar energy. Vocabulary Categories: Energy and heat transfer engineering \| Solar energy engineering Withdrawn begins : 2022-06-06	Withdrawn

Standards Development

RHE/25 - Solar Heating

Committee standards activity