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Building Energy Ratings in Limerick City
26,125 certificates · median 190 kWh/m²/yr · rank 42 of 52 counties on the share rated B3 or better
The national median is 178 kWh/m²/yr. 31.5% of the certificates on the 2009 scale are B3 or better; 18.1% are E, F or G.
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Ratings
2009 scale, A1 to E2 — 22,632 certificates
| Rating | Certificates | Share |
|---|---|---|
| A1 | 189 | 0.8% |
| A2 | 1,280 | 5.7% |
| A3 | 1,077 | 4.8% |
| B1 | 775 | 3.4% |
| B2 | 1,285 | 5.7% |
| B3 | 2,512 | 11.1% |
| C1 | 3,162 | 14.0% |
| C2 | 3,084 | 13.6% |
| C3 | 2,846 | 12.6% |
| D1 | 2,486 | 11.0% |
| D2 | 2,069 | 9.1% |
| E1 | 1,088 | 4.8% |
| E2 | 779 | 3.4% |
2026 scale, A0 to E — 1,338 certificates
| Rating | Certificates | Share |
|---|---|---|
| A0 | 53 | 4.0% |
| A | 124 | 9.3% |
| B | 505 | 37.7% |
| C | 459 | 34.3% |
| D | 128 | 9.6% |
| E | 69 | 5.2% |
F and G — the same on both scales
| Rating | Certificates | Share of all certificates |
|---|---|---|
| F | 934 | 3.6% |
| G | 1,221 | 4.7% |
⚠️ 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 | 26,125 |
| Median energy use | 190 kWh/m²/yr |
| Median CO₂ | 38.4 kg CO₂/m²/yr |
| Median floor area | 95 m² |
| Median wall U-value | 0.55 W/m²K |
| Median roof U-value | 0.23 W/m²K |
| Median floor U-value | 0.44 W/m²K |
| Median window U-value | 2.78 W/m²K |
| Median heating system efficiency | 91% |
| Certificates with solar PV | 399 (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 | 648 | 325 | 1.46 |
| 1900–1944 | 2,964 | 285 | 1.21 |
| 1945–1969 | 3,550 | 237 | 0.60 |
| 1970–1979 | 3,585 | 205 | 0.60 |
| 1980–1990 | 2,691 | 202 | 0.59 |
| 1991–1999 | 4,140 | 189 | 0.55 |
| 2000–2004 | 4,160 | 181 | 0.55 |
| 2005–2009 | 2,349 | 160 | 0.37 |
| 2010–2018 | 573 | 66 | 0.19 |
| 2019 or later | 1,465 | 44 | 0.17 |
Periods with fewer than 11 certificates are not shown separately.
By dwelling type
| Type | Certificates | Median kWh/m²/yr | Median floor area (m²) |
|---|---|---|---|
| Semi-detached house | 7,942 | — | — |
| Detached house | 4,989 | — | — |
| Mid-terrace house | 4,429 | — | — |
| Mid-floor apartment | 2,375 | — | — |
| End of terrace house | 2,338 | — | — |
| Top-floor apartment | 1,840 | — | — |
| Ground-floor apartment | 1,605 | — | — |
| Maisonette | 501 | — | — |
| House | 65 | — | — |
| Apartment | 23 | — | — |
Main space heating fuel
| Fuel | Certificates | Share | Median kWh/m²/yr |
|---|---|---|---|
| Mains Gas | 13,731 | 52.6% | — |
| Electricity | 6,179 | 23.7% | — |
| Heating Oil | 5,302 | 20.3% | — |
| Manufactured Smokeless Fuel | 342 | 1.3% | — |
| Solid Multi-Fuel | 271 | 1.0% | — |
| Bulk LPG (propane or butane) | 64 | 0.2% | — |
| House Coal | 27 | 0.1% | — |
One certificate is one assessment of one dwelling, not one dwelling: a home rated twice appears twice. How this is counted.