Building Energy Ratings in Co. Wexford
48,122 certificates · median 189 kWh/m²/yr · rank 25 of 52 counties on the share rated B3 or better
Half of the dwellings rated in Co. Wexford use more than 189 kWh/m²/yr.
The national median is 178 kWh/m²/yr. 36.8% of the certificates on the 2009 scale are B3 or better; 20.1% are E, F or G.
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Ratings
2009 scale, A1 to E2 — 41,260 certificates
| Rating | Certificates | Share |
|---|---|---|
| A1 | 615 | 1.5% |
| A2 | 5,434 | 13.2% |
| A3 | 2,286 | 5.5% |
| B1 | 1,627 | 3.9% |
| B2 | 1,926 | 4.7% |
| B3 | 3,284 | 8.0% |
| C1 | 4,325 | 10.5% |
| C2 | 5,063 | 12.3% |
| C3 | 4,918 | 11.9% |
| D1 | 4,538 | 11.0% |
| D2 | 3,626 | 8.8% |
| E1 | 2,112 | 5.1% |
| E2 | 1,506 | 3.7% |
2026 scale, A0 to E — 2,294 certificates
| Rating | Certificates | Share |
|---|---|---|
| A0 | 333 | 14.5% |
| A | 316 | 13.8% |
| B | 760 | 33.1% |
| C | 633 | 27.6% |
| D | 154 | 6.7% |
| E | 98 | 4.3% |
F and G — the same on both scales
| Rating | Certificates | Share of all certificates |
|---|---|---|
| F | 1,725 | 3.6% |
| G | 2,843 | 5.9% |
⚠️ The two scales are shown apart on purpose: adding a « B » from the 2026 scale to « B1+B2+B3 » from the 2009 scale would produce a number that exists nowhere. F and G belong to both, so they are counted in neither distribution and shown on their own. How the two scales compare.
What the certificates measure
| Certificates | 48,122 |
| Median energy use | 189 kWh/m²/yr |
| Median CO₂ | 45.3 kg CO₂/m²/yr |
| Median floor area | 112 m² |
| Median wall U-value | 0.37 W/m²K |
| Median roof U-value | 0.20 W/m²K |
| Median floor U-value | 0.41 W/m²K |
| Median window U-value | 2.44 W/m²K |
| Median heating system efficiency | 88% |
| Certificates with solar PV | 734 (1.5%) |
| Median renewable energy ratio | 0.00 |
| National median energy use | 178 kWh/m²/yr |
By period of construction
| Built | Certificates | Median kWh/m²/yr | Median wall U-value |
|---|---|---|---|
| before 1900 | 1,467 | 370 | 1.63 |
| 1900–1944 | 4,046 | 362 | 1.50 |
| 1945–1969 | 2,502 | 294 | 0.87 |
| 1970–1979 | 3,624 | 255 | 0.60 |
| 1980–1990 | 3,907 | 220 | 0.43 |
| 1991–1999 | 6,726 | 207 | 0.45 |
| 2000–2004 | 10,023 | 193 | 0.52 |
| 2005–2009 | 7,795 | 163 | 0.37 |
| 2010–2018 | 2,035 | 57 | 0.20 |
| 2019 or later | 5,997 | 39 | 0.18 |
Periods with fewer than 11 certificates are not shown separately.
By dwelling type
| Type | Certificates | Median kWh/m²/yr | Median floor area (m²) |
|---|---|---|---|
| Detached house | 23,448 | — | — |
| Semi-detached house | 11,244 | — | — |
| Mid-terrace house | 5,149 | — | — |
| End of terrace house | 2,862 | — | — |
| House | 1,456 | — | — |
| Top-floor apartment | 1,328 | — | — |
| Ground-floor apartment | 1,304 | — | — |
| Mid-floor apartment | 940 | — | — |
| Maisonette | 279 | — | — |
| Apartment | 82 | — | — |
Main space heating fuel
| Fuel | Certificates | Share | Median kWh/m²/yr |
|---|---|---|---|
| Heating Oil | 29,448 | 61.2% | — |
| Electricity | 14,004 | 29.1% | — |
| Solid Multi-Fuel | 2,278 | 4.7% | — |
| Bulk LPG (propane or butane) | 912 | 1.9% | — |
| Manufactured Smokeless Fuel | 539 | 1.1% | — |
| Mains Gas | 392 | 0.8% | — |
| House Coal | 146 | 0.3% | — |
| Bottled LPG | 103 | 0.2% | — |
| Wood Pellets (bulk supply for | 82 | 0.2% | — |
| Wood Logs | 39 | 0.1% | — |
One certificate is one assessment of one dwelling, not one dwelling: a home rated twice appears twice. How this is counted.