Building Energy Ratings in Co. Leitrim
10,693 certificates · median 205 kWh/m²/yr · rank 48 of 52 counties on the share rated B3 or better
Half of the dwellings rated in Co. Leitrim use more than 205 kWh/m²/yr.
The national median is 178 kWh/m²/yr. 27.9% of the certificates on the 2009 scale are B3 or better; 32.2% are E, F or G.
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Ratings
2009 scale, A1 to E2 — 8,530 certificates
| Rating | Certificates | Share |
|---|---|---|
| A1 | 68 | 0.8% |
| A2 | 322 | 3.8% |
| A3 | 256 | 3.0% |
| B1 | 326 | 3.8% |
| B2 | 433 | 5.1% |
| B3 | 977 | 11.5% |
| C1 | 1,205 | 14.1% |
| C2 | 1,217 | 14.3% |
| C3 | 1,013 | 11.9% |
| D1 | 891 | 10.4% |
| D2 | 800 | 9.4% |
| E1 | 537 | 6.3% |
| E2 | 485 | 5.7% |
2026 scale, A0 to E — 455 certificates
| Rating | Certificates | Share |
|---|---|---|
| A0 | 26 | 5.7% |
| A | 67 | 14.7% |
| B | 178 | 39.1% |
| C | 132 | 29.0% |
| D | 36 | 7.9% |
| E | 16 | 3.5% |
F and G — the same on both scales
| Rating | Certificates | Share of all certificates |
|---|---|---|
| F | 563 | 5.3% |
| G | 1,145 | 10.7% |
⚠️ 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 | 10,693 |
| Median energy use | 205 kWh/m²/yr |
| Median CO₂ | 48.7 kg CO₂/m²/yr |
| Median floor area | 117 m² |
| Median wall U-value | 0.37 W/m²K |
| Median roof U-value | 0.25 W/m²K |
| Median floor U-value | 0.41 W/m²K |
| Median window U-value | 2.66 W/m²K |
| Median heating system efficiency | 86% |
| Certificates with solar PV | 140 (1.3%) |
| 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 | 382 | 420 | 1.46 |
| 1900–1944 | 1,369 | 413 | 1.56 |
| 1945–1969 | 613 | 352 | 1.35 |
| 1970–1979 | 673 | 270 | 0.58 |
| 1980–1990 | 978 | 245 | 0.37 |
| 1991–1999 | 936 | 208 | 0.39 |
| 2000–2004 | 2,377 | 194 | 0.55 |
| 2005–2009 | 2,861 | 161 | 0.37 |
| 2010–2018 | 148 | 83 | 0.26 |
| 2019 or later | 356 | 42 | 0.16 |
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 | 6,224 | — | — |
| Semi-detached house | 2,122 | — | — |
| Mid-terrace house | 723 | — | — |
| End of terrace house | 414 | — | — |
| Top-floor apartment | 387 | — | — |
| Ground-floor apartment | 346 | — | — |
| House | 233 | — | — |
| Mid-floor apartment | 148 | — | — |
| Maisonette | 74 | — | — |
| Apartment | 20 | — | — |
Main space heating fuel
| Fuel | Certificates | Share | Median kWh/m²/yr |
|---|---|---|---|
| Heating Oil | 6,817 | 63.8% | — |
| Electricity | 2,438 | 22.8% | — |
| Solid Multi-Fuel | 699 | 6.5% | — |
| Bulk LPG (propane or butane) | 482 | 4.5% | — |
| House Coal | 92 | 0.9% | — |
| Mains Gas | 51 | 0.5% | — |
| Manufactured Smokeless Fuel | 45 | 0.4% | — |
| Bottled LPG | 21 | 0.2% | — |
| Wood Pellets (bulk supply for | 17 | 0.2% | — |
| Wood Logs | 15 | 0.1% | — |
One certificate is one assessment of one dwelling, not one dwelling: a home rated twice appears twice. How this is counted.