Building Energy Ratings in Dublin 17
6,637 certificates · median 166 kWh/m²/yr · rank 16 of 52 counties on the share rated B3 or better
Half of the dwellings rated in Dublin 17 use more than 166 kWh/m²/yr.
The national median is 178 kWh/m²/yr. 41.7% of the certificates on the 2009 scale are B3 or better; 7.5% are E, F or G.
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Ratings
2009 scale, A1 to E2 — 6,176 certificates
| Rating | Certificates | Share |
|---|---|---|
| A1 | 49 | 0.8% |
| A2 | 1,105 | 17.9% |
| A3 | 351 | 5.7% |
| B1 | 84 | 1.4% |
| B2 | 349 | 5.7% |
| B3 | 636 | 10.3% |
| C1 | 830 | 13.4% |
| C2 | 930 | 15.1% |
| C3 | 629 | 10.2% |
| D1 | 548 | 8.9% |
| D2 | 379 | 6.1% |
| E1 | 169 | 2.7% |
| E2 | 117 | 1.9% |
2026 scale, A0 to E — 299 certificates
| Rating | Certificates | Share |
|---|---|---|
| A0 | 19 | 6.4% |
| A | 120 | 40.1% |
| B | 54 | 18.1% |
| C | 70 | 23.4% |
| D | 23 | 7.7% |
| E | 13 | 4.3% |
F and G — the same on both scales
| Rating | Certificates | Share of all certificates |
|---|---|---|
| F | 101 | 1.5% |
| G | 61 | 0.9% |
⚠️ 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 | 6,637 |
| Median energy use | 166 kWh/m²/yr |
| Median CO₂ | 32.0 kg CO₂/m²/yr |
| Median floor area | 82 m² |
| Median wall U-value | 0.35 W/m²K |
| Median roof U-value | 0.13 W/m²K |
| Median floor U-value | 0.37 W/m²K |
| Median window U-value | 2.20 W/m²K |
| Median heating system efficiency | 90% |
| Certificates with solar PV | 99 (1.5%) |
| Median renewable energy ratio | 0.18 |
| National median energy use | 178 kWh/m²/yr |
By period of construction
| Built | Certificates | Median kWh/m²/yr | Median wall U-value |
|---|---|---|---|
| 1900–1944 | 36 | 315 | 1.05 |
| 1945–1969 | 780 | 233 | 0.69 |
| 1970–1979 | 1,276 | 194 | 0.33 |
| 1980–1990 | 689 | 186 | 0.33 |
| 1991–1999 | 314 | 179 | 0.55 |
| 2000–2004 | 498 | 198 | 0.55 |
| 2005–2009 | 1,458 | 156 | 0.37 |
| 2010–2018 | 223 | 56 | 0.16 |
| 2019 or later | 1,359 | 37 | 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) |
|---|---|---|---|
| Mid-terrace house | 1,775 | — | — |
| Mid-floor apartment | 1,402 | — | — |
| Semi-detached house | 1,130 | — | — |
| End of terrace house | 1,053 | — | — |
| Top-floor apartment | 552 | — | — |
| Ground-floor apartment | 461 | — | — |
| Detached house | 166 | — | — |
| Maisonette | 84 | — | — |
| House | 11 | — | — |
Main space heating fuel
| Fuel | Certificates | Share | Median kWh/m²/yr |
|---|---|---|---|
| Mains Gas | 4,144 | 62.4% | — |
| Electricity | 2,300 | 34.7% | — |
| Heating Oil | 152 | 2.3% | — |
| Manufactured Smokeless Fuel | 12 | 0.2% | — |
One certificate is one assessment of one dwelling, not one dwelling: a home rated twice appears twice. How this is counted.