Key Indicators & Decisions (KI&Ds) – United Kingdom – Wales – 2020

01.01

Definition of public buildings (according to article 9 b)

Not available

01.02

Definition of public buildings used by the public (according to article 13)

Display Energy Certificates (based on measured energy consumption) are issued and displayed in buildings >250 m² that are occupied by a public authority and frequently visited by the public.

Energy Performance Certificates (based on predicted energy consumption) are displayed in commercial premises >500 m² that are frequently visited by the public, and where an EPC has previously been issued.

01.03

Number of residential buildings

1,431,537 residential buildings in Wales (March 2019)*

(*) Dwelling Stock Estimates for Wales

https://statswales.gov.wales/Catalogue/Housing/Dwelling-Stock-Estimates/dwellingstockestimates-by-year-tenure

01.04

Number of non-residential buildings

119,680 in Wales*

(*) Estimated based on:

Non-domestic rating: stock of properties including business floorspace, 2019. Table SC1.0, Valuation Office Agency (Nov 2019).

https://www.gov.uk/government/statistics/non-domestic-rating-stock-of-properties-including-business-floorspace-2019

01.05

If possible, share of public buildings included in the number given in 01.04

Not available

01.06

If possible, share of commercial buildings included in the number given in 01.04

29,470 retail premises in Wales*

(*) Estimated based on:

Non-domestic rating: stock of properties including business floorspace, 2019. Table SC1.0 Valuation Office Agency (Nov 2019).

https://www.gov.uk/government/statistics/non-domestic-rating-stock-of-properties-including-business-floorspace-2019

01.07

Number of buildings constructed per year (estimate)

Residential: see 01.08

Non-residential: not identified

01.08

If possible, share of residential buildings constructed per year (estimate, included in the number given in 01.07)

New residential building completions (Wales)*:

2018-19

5,777

2017-18

6,663

2016-17

6,833

(*) New dwellings completed by period and tenure, StatsWales: Welsh Government (March 2020).

https://statswales.gov.wales/Catalogue/Housing/New-House-Building/newdwellingscompleted-by-period-tenure

01.09

If possible, share of non-residential buildings constructed per year (estimate, included in the number given in 01.07)

Not identified

01.10

Useful floor area of buildings constructed per year in million square meters (estimate)

(*) Live Table NB3, published quarterly statistics on Energy Performance of Buildings Certificates in England and Wales

(^) Live Table A, published quarterly statistics on Energy Performance of Buildings Certificates in England and Wales

https://www.gov.uk/government/statistical-data-sets/live-tables-on-energy-performance-of-buildings-certificates

02.01

Are building codes set as overall value, primary energy, environment (CO₂), reference building or other

 Reference building approach

02.02

Requirements for energy performance of residential buildings in current building code

Wales adopted four “Approved Documents” which provide a route to comply with Building Regulations. Five criteria are set for new residential and non‐residential buildings:

1. Ensure that the calculated Building CO₂ Emission Rate is no greater than the target.

For non‐residential buildings only, ensure that the Building Primary Energy Consumption is not greater than the target.

1. Meet limits on design flexibility, including minimum fabric standards and building services efficiencies.
2. Ensure appropriate passive control measures to limit summer heat gains, including the effect of shading devices and comfort assessment.
3. Ensure the “as built” building performance (including fabric and fixed building services) is consistent with design calculations.

5. Provide information for energy efficient building operation.

Residential buildings:

Conservation of Fuel and Power: Approved Document L1A. Welsh Government, 2014 edition incorporating 2016 amendments. Available at:

https://gov.wales/sites/default/files/publications/2019-05/building-regulations-guidance-part-l-conservation-of-fuel-and-power-2014-l1a-new-dwellings.pdf

02.03

Requirements for energy performance of non-residential commercial buildings in current building code

Ditto 02.02

Non-residential buildings:

Conservation of Fuel and Power: Approved Document L2A. Welsh Government, 2014 edition incorporating 2016 amendments. Available at:

https://gov.wales/sites/default/files/publications/2019-05/building-regulations-guidance-part-l-conservation-of-fuel-and-power-2014-l2a-new-buildings-other-than-dwellings.pdf

02.04

Requirements for energy performance of non-residential public buildings in current building code

Ditto 02.02

Non-residential buildings:

Conservation of Fuel and Power: Approved Document L2A. Welsh Government, 2014 edition incorporating 2016 amendments. Available at:

https://gov.wales/sites/default/files/publications/2019-05/building-regulations-guidance-part-l-conservation-of-fuel-and-power-2014-l2a-new-buildings-other-than-dwellings.pdf

02.05

Is the performance level of nearly zero energy (NZEB) for new buildings defined in national legislation?

Building Regulation 25B* states: ‘Where a building is erected, it must be a nearly zero energy building’.

The performance level of nearly zero energy (NZEB) for new buildings is not defined within national legislation. However, SI. 747 (2013) defines NZEB as “a building that has a very high energy performance, as determined in accordance with a methodology approved under regulation 24, where the nearly zero or very low amount of energy required should be covered to a very significant extent by energy from renewable sources, including energy from renewable sources produced on-site or nearby.”

The approved methodology does not set a performance level for NZEB.

(*) Welsh Statutory Instrument (SI) No. 747: The Building Regulations &c. (Amendment) (Wales) Regulations 2013. Available at:

http://www.legislation.gov.uk/wsi/2013/747/pdfs/wsi_20130747_mi.pdf

02.06

Nearly zero energy (NZEB) level for residential buildings (level for building code)

Ditto 02.05

02.07

Year / date for nearly zero energy (NZEB) as level for residential buildings (as indicated in 02.04)

For all new buildings (excluding new buildings owned and occupied by public authorities), the coming-into-force date for Regulation 25B is 31 December 2020.

Welsh Statutory Instrument (SI) No. 747: The Building Regulations &c. (Amendment) (Wales) Regulations 2013. Available at:

http://www.legislation.gov.uk/wsi/2013/747/pdfs/wsi_20130747_mi.pdf

02.08

Nearly zero energy (NZEB) level for all non-residential buildings (level for building code)

For new buildings owned and occupied by public authorities the coming-into-force date for Regulation 25B is 1 January 2019.

For other new buildings, see 02.07.

Welsh Statutory Instrument (SI) No. 747: The Building Regulations &c. (Amendment) (Wales) Regulations 2013. Available at:

http://www.legislation.gov.uk/wsi/2013/747/pdfs/wsi_20130747_mi.pdf

02.09

Year / date for nearly zero energy (NZEB) as level for non-residential buildings (as indicated in 02.06)

See above.

02.10

Are nearly zero energy buildings (NZEB) defined using a carbon or environment indicator?

Carbon based.

02.11

Is renewable energy a part of the overall or an additional requirement?

Part of the overall requirement.   

Welsh Statutory Instrument (SI) No. 747: The Building Regulations &c. (Amendment) (Wales) Regulations 2013. Available at:

http://www.legislation.gov.uk/wsi/2013/747/pdfs/wsi_20130747_mi.pdf

02.12

If renewable energy is an additional requirement to NZEB, please indicate level

Not applicable.

02.13

Specific comfort criteria for new buildings, provide specific parameters for instance for airtightness, minimum ventilation rates

See 02.02

03.01

Is the level of nearly zero energy (NZEB) for existing buildings set in national legislation?

No

03.02

Is the level of nearly zero energy (NZEB) for existing buildings similar to the level for new buildings?

Not defined

03.03

Definition of nearly zero energy (NZEB) for existing residential buildings (if different from new buildings)

Not defined

03.04

Definition of nearly zero energy (NZEB) for existing non-residential buildings (if different from new buildings)

Not defined

03.05

Overall minimum requirements in case of major-renovation

Please see England report.

03.06

Minimum requirements for individual building parts in case of renovation

Ditto 03.05

03.07

National targets for renovation in connection to Long Term Renovation Strategy (number or percentage of buildings)

Please see England report.

03.08

National targets for renovation in connection to Long Term Renovation Strategy (expected reductions and relevant years)

Please see England report.

04.01

Number of energy performance certificates per year (for instance average or values for of 3-5 years)

Wales:

Domestic EPCs (annual average 2017– 2019): 69,804

Non-domestic EPCs (annual average 2017 – 2019): 3,942

Non-domestic DECs (annual average 2017 – 2019): 2,018

Live tables on Energy Performance of Buildings Certificates, MHCLG, (*) Table D1: Domestic Energy Performance Certificates for all dwellings by energy efficiency rating, (^) Table A: Non-domestic Energy Performance Certificates by energy performance asset rating & (**) Table DEC1: Display Energy Certificates by local authority and energy performance operational rating, January 2020.

https://www.gov.uk/government/statistical-data-sets/live-tables-on-energy-performance-of-buildings-certificates#epcs-for-all-properties-non-domestic-and-domestic

04.02

Number of EPCs since start of scheme

Wales:

Domestic EPCs (total to December 2019): 1,029,685*

Non-domestic EPCs (total to December 2016): 43,880^

Live tables on Energy Performance of Buildings Certificates, MHCLG, (*) Table D1: Domestic Energy Performance Certificates for all dwellings by energy efficiency rating, (^) Table A: Non-domestic Energy Performance Certificates by energy performance asset rating & (**) Table DEC1: Display Energy Certificates by local authority and energy performance operational rating, January 2020.

https://www.gov.uk/government/statistical-data-sets/live-tables-on-energy-performance-of-buildings-certificates#epcs-for-all-properties-non-domestic-and-domestic

04.03

Number of EPCs for different building types

Wales:

Residential buildings

Bungalow: 116,239

Flat:  177,090

House: 724,589

Maisonette: 11,523

Park home:       241

Not Recorded: 3

Total:    1,029,685

Non-residential buildings

Administration, Business, Commerce:31,477

Culture, Leisure, Sport, Travel: 8,022

Education: 1,674

Health & Social Care: 2,195

Law & Order, Emergency Services: 156

Transport:146

Other: 210

Live tables on Energy Performance of Buildings Certificates, MHCLG, (*) Table A1: Energy Performance Certificates for all properties by total floor area and type of property & (^) Table B: Non-domestic Energy Performance Certificates by property group, January 2020.

https://www.gov.uk/government/statistical-data-sets/live-tables-on-energy-performance-of-buildings-certificates#epcs-for-all-properties-non-domestic-and-domestic

04.04

Number of assessors

Refer to the England KIDs for details.

04.05

Basic education requirements for assessors

Refer to the England KIDs for details.

04.06

Additional training demands for assessors

Refer to the England KIDs for details.

04.07

Quality assurance system

Refer to the England KIDs for details.

04.08

National database for EPCs

Refer to the England KIDs for details.

04.09

Link to national information on EPCs / Database

Refer to the England KIDs for details.

05.01

Is there a national definition of smart buildings?

Not defined

05.02

Are there current support systems for smart buildings?

Not defined

05.03

Are there currently specific requirements for technical building systems (for instance in building codes)?

Yes, See Table 5 above. Further details can also be located within the Approved Documents for new and existing residential and non‐residential buildings.

 Domestic Building Services Compliance Guide, 2013.

Available at:  https://gov.wales/sites/default/files/publications/2019-05/building-regulations-guidance-part-l-conservation-of-fuel-and-power-domestic-building-services-compliance-guide.pdf

Approved Documents: AD L1A, AD L1B, AD L2A and AD L2B for new and existing residential and non‐residential buildings respectively.

Available at:  https://gov.wales/building-regulations-guidance-part-l-conservation-fuel-and-power

05.04

Are there current requirements for automatics (for instance in building codes)?

Yes, See Table 5.

05.05

Chosen option A or B for heating systems (inspection or other measures)

Option B

05.06

Number of heating inspections; reports per year (if option A)

Not applicable

05.07

Chosen option A or B for cooling systems (inspection or other measures)

Option A

05.08

Number of air-conditioning / cooling system inspections; reports per year (if option A)

Refer to the England KIDs for details.

05.09

Is there a national database for heating inspections?

Refer to the England KIDs for details.

05.10

Is there a national database for cooling / air-conditioning inspections?

Refer to the England KIDs for details.

05.11

Are inspection databases combined with EPC databases for registration of EPCs and inspection reports?

Yes

05.12

Link to national information on Inspection / Database

Refer to the England KIDs for details.