Wales
MEES 2031 exposure in Merthyr Tydfil
26 of the 29 industrial and warehouse buildings over 1,000 m² in Merthyr Tydfil with an EPC are rated C to E: 1.9m sq ft (173,053 m²) of floorspace that meets today's E minimum but falls short of the proposed EPC B standard.
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Merthyr Tydfil in figures
EPC register, snapshot 30 Sep 2026
- Rated C to E
- 1.9m sq ft173,053 m² in 26 buildings
- Rated F or G
- 1 building43k sq ft (3,965 m²), below today's E minimum
- Rated A+ to B
- 2 buildingsAlready at the proposed standard
- Share below B
- 93%Of 29 buildings over 1,000 m². England and Wales: 70%
Merthyr Tydfil has the 178th most floorspace rated C to E of 316 local authorities in England and Wales, and the 13th most of 22 in Wales.
EPC rating mix
Share of buildings over 1,000 m², by latest EPC rating
- Merthyr Tydfil29 buildings90%
- Wales1,738 buildings22%75%
- England and Wales38,148 buildings30%67%
Latest certificate per building from the government's EPC register, snapshot 30 Sep 2026. Industrial and warehouse uses (B2 and B8), floor area over 1,000 m² as declared on the EPC; 1 m² is 10.7639 sq ft. How we count it
What stands out in Merthyr Tydfil
Compared with the other 21 local authorities in Wales and with England and Wales, from the same EPC register snapshot.
- Most of its floorspace rated C to E, 73% or 1.4m sq ft (126,292 m²), is in 7 buildings over 10,000 m².
- Unusually, its smaller buildings do better: 10% of those of 1,000 to 5,000 m² are rated B or better, against 0% of the 7 over 10,000 m².
- 17 of its 27 buildings rated C to G (63%) have an EPC that has lapsed or is estimated to lapse before 2031, against 54% across England and Wales; 9 have already lapsed.
- 7 of its 17 C-rated buildings (41%) have an asset rating of 51 to 60, within 10 points of band B: 599k sq ft (55,678 m²) of floorspace. Across England and Wales it's 37%.
- General industrial (B2) makes up 62% of its buildings over 1,000 m², against 42% across England and Wales.
- Gas is the main heating fuel in 79% of its buildings, against 53% across England and Wales.
- In the 12 months to 30 Sep 2026, 1 industrial or warehouse building of any size here had an EPC lodged to be let and 6 for a marketed sale, 7 in all: the 2nd fewest of 22 local authorities in Wales.
- The recommendation lodged most often on its certificates rated C to G is “Consider installing building mounted wind turbine(s)” (EPC-R2), on 19 of 27 buildings.
Every rating, A+ to G
Merthyr Tydfil's 29 industrial and warehouse buildings over 1,000 m² by latest EPC rating, beside Wales and the whole of England and Wales.
By latest EPC rating
Share is of buildings over 1,000 m² in each area.
| Rating | Buildings | Floor area | Share | Wales | England and Wales |
|---|---|---|---|---|---|
| A+ | 0 | 0 sq ft0 m² | 0% | 1% | 2% |
| A | 0 | 0 sq ft0 m² | 0% | 5% | 10% |
| B | 2 | 88k sq ft8,214 m² | 7% | 17% | 19% |
| C | 17 | 1.2m sq ft115,610 m² | 59% | 40% | 36% |
| D | 8 | 594k sq ft55,148 m² | 28% | 26% | 22% |
| E | 1 | 25k sq ft2,295 m² | 3% | 9% | 9% |
| F | 1 | 43k sq ft3,965 m² | 3% | 1% | 1% |
| G | 0 | 0 sq ft0 m² | 0% | 2% | 2% |
Within 10 points of B
Rated C with an asset rating of 51 to 60. Band B ends at 50.
7 buildings
Of 17 rated C (41%), with 599k sq ft (55,678 m²) of floorspace. England and Wales: 37% of C-rated buildings.
By building size
Floor area as declared on the EPC.
| Floor area | Buildings | Rated B or better | C to E floor area |
|---|---|---|---|
| Over 1,000 to 5,000 m² | 20 | 10%2 of 20 | 385k sq ft35,788 m² |
| Over 5,000 to 10,000 m² | 2 | 0%0 of 2 | 118k sq ft10,973 m² |
| Over 10,000 m² | 7 | 0%0 of 7 | 1.4m sq ft126,292 m² |
Certificates and lettings
An EPC lasts 10 years, and a valid one is needed to let or sell. We estimate expiry as the lodgement date plus 10 years.
When the certificates lapse
Buildings over 1,000 m², by when their latest EPC lapses, at 30 Sep 2026.
| EPC lapses | All buildings | Rated C to G | C to G floor area |
|---|---|---|---|
| Already lapsed | 9 | 9 | 859k sq ft79,780 m² |
| Rest of 2026 | 2 | 2 | 269k sq ft24,999 m² |
| In 2027 | 2 | 2 | 57k sq ft5,292 m² |
| In 2028 | 3 | 3 | 293k sq ft27,196 m² |
| In 2029 | 0 | 0 | 0 sq ft0 m² |
| In 2030 | 1 | 1 | 13k sq ft1,194 m² |
| 2031 or later | 12 | 10 | 415k sq ft38,557 m² |
New EPCs in the last year
Industrial and warehouse buildings of any size whose latest EPC was lodged in the 12 months to 30 Sep 2026, by the reason on the certificate.
- To let
- 1building
- Marketed sale
- 6buildings
- New build
- 0buildings
- Other reasons
- 1building
8 in all: 13% to let, against 56% across England and Wales. How the daily feed works
Uses, heating and recommendations
What the buildings are used for, how they're heated, and what assessors recommended on the certificates of those rated C to G.
By use
Use from the EPC's property type.
| Use | Buildings | B or better | C to E | F or G | C to E floor area |
|---|---|---|---|---|---|
| Storage and distribution (B8) | 11 | 0 | 11 | 0 | 353k sq ft32,839 m² |
| General industrial (B2) | 18 | 2 | 15 | 1 | 1.5m sq ft140,214 m² |
By main heating fuel
As recorded on each building's latest EPC.
| Main heating fuel | Buildings | Share | England and Wales |
|---|---|---|---|
| Natural gas | 23 | 79% | 53% |
| Grid supplied electricity | 5 | 17% | 37% |
| Other | 1 | 3% | 4% |
What assessors recommend
The five most common on the latest certificates of its 27 buildings rated C to G, in the register's wording. A recommendation is the assessor's, not a requirement.
- 01
Consider installing building mounted wind turbine(s).
EPC-R2. On 19 of 27 buildings (70%)
- 02
Consider replacing T8 lamps with retrofit T5 conversion kit.
EPC-L5. On 18 of 27 buildings (67%)
- 03
Add weather compensation controls to heating system.
EPC-H8. On 17 of 27 buildings (63%)
- 04
Consider installing solar water heating.
EPC-R3. On 17 of 27 buildings (63%)
- 05
Add optimum start/stop to the heating system.
EPC-H7. On 15 of 27 buildings (56%)
How Merthyr Tydfil compares
Merthyr Tydfil has 0.2% of the industrial floorspace rated C to E in England and Wales. 93% of its buildings over 1,000 m² are below B, against 78% across Wales and 70% nationally.
Against the region and the country
| Area | Over 1,000 m² | Rated C to E | C to E floor area | Rated F or G | Share below B |
|---|---|---|---|---|---|
| Merthyr Tydfil | 29 | 26 | 1.9m sq ft173,053 m² | 1 | 93% |
| Wales | 1,738 | 1,295 | 55.9m sq ft5,191,184 m² | 54 | 78% |
| England and Wales | 38,148 | 25,619 | 1.01bn sq ft94,020,657 m² | 1,037 | 70% |
Nearby in the Wales ranking
| Rank | Local authority | C to E floor area |
|---|---|---|
| 11 | Blaenau Gwent | 2.3m sq ft217,755 m² |
| 12 | Powys | 2.2m sq ft201,293 m² |
| 13 | Merthyr Tydfil | 1.9m sq ft173,053 m² |
| 14 | Monmouthshire | 1.8m sq ft162,983 m² |
| 15 | Carmarthenshire | 1.7m sq ft158,347 m² |
What the 2031 proposal means
In June 2026 the government said it intends that privately rented non-domestic buildings over 1,000 m² reach EPC B from 2031, where cost effective. It needs secondary legislation, so for now it's a proposal, not law. What the proposal means
C to E: fine today, short of B
Merthyr Tydfil has 26 buildings over 1,000 m² rated C to E. They meet today's E minimum, but would fall short of B if the proposal becomes law while they're let.F or G: below the minimum already
1 building in Merthyr Tydfil is rated F or G. If let, it already needs an improvement or a registered exemption under today's rules.Where cost effective, and only when let
The 7-year payback test and the exemptions remain. Owner-occupied buildings are counted too, as an EPC can't say whether a building is let. Local weights and measures authorities enforce the rules. MEES in plain EnglishRatings change at renewal
17 of Merthyr Tydfil's buildings rated C to G have an EPC that has lapsed or is estimated to lapse before 2031. Each needs a new certificate before it's let or sold, and the new rating may differ.
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