Home › Counties › Co. Roscommon
Building Energy Ratings in Co. Roscommon
17,289 certificates · median 204 kWh/m²/yr · rank 45 of 52 counties on the share rated B3 or better
The national median is 178 kWh/m²/yr. 29.8% of the certificates on the 2009 scale are B3 or better; 30.7% are E, F or G.
Pro accessThe datasetA specific request
Ratings
2009 scale, A1 to E2 — 13,802 certificates
| Rating | Certificates | Share |
|---|---|---|
| A1 | 193 | 1.4% |
| A2 | 831 | 6.0% |
| A3 | 593 | 4.3% |
| B1 | 555 | 4.0% |
| B2 | 711 | 5.2% |
| B3 | 1,232 | 8.9% |
| C1 | 1,759 | 12.7% |
| C2 | 1,902 | 13.8% |
| C3 | 1,836 | 13.3% |
| D1 | 1,485 | 10.8% |
| D2 | 1,244 | 9.0% |
| E1 | 824 | 6.0% |
| E2 | 637 | 4.6% |
2026 scale, A0 to E — 746 certificates
| Rating | Certificates | Share |
|---|---|---|
| A0 | 40 | 5.4% |
| A | 110 | 14.7% |
| B | 304 | 40.8% |
| C | 193 | 25.9% |
| D | 63 | 8.4% |
| E | 36 | 4.8% |
F and G — the same on both scales
| Rating | Certificates | Share of all certificates |
|---|---|---|
| F | 875 | 5.1% |
| G | 1,866 | 10.8% |
⚠️ 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 | 17,289 |
| Median energy use | 204 kWh/m²/yr |
| Median CO₂ | 49.5 kg CO₂/m²/yr |
| Median floor area | 119 m² |
| Median wall U-value | 0.37 W/m²K |
| Median roof U-value | 0.24 W/m²K |
| Median floor U-value | 0.41 W/m²K |
| Median window U-value | 2.63 W/m²K |
| Median heating system efficiency | 85% |
| Certificates with solar PV | 260 (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 | 535 | 438 | 1.54 |
| 1900–1944 | 2,344 | 393 | 1.43 |
| 1945–1969 | 1,427 | 337 | 1.13 |
| 1970–1979 | 1,209 | 281 | 0.55 |
| 1980–1990 | 1,542 | 242 | 0.38 |
| 1991–1999 | 1,438 | 212 | 0.37 |
| 2000–2004 | 3,208 | 190 | 0.53 |
| 2005–2009 | 4,374 | 163 | 0.37 |
| 2010–2018 | 355 | 64 | 0.21 |
| 2019 or later | 857 | 41 | 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) |
|---|---|---|---|
| Detached house | 10,239 | — | — |
| Semi-detached house | 3,955 | — | — |
| Mid-terrace house | 830 | — | — |
| House | 731 | — | — |
| End of terrace house | 520 | — | — |
| Top-floor apartment | 438 | — | — |
| Ground-floor apartment | 363 | — | — |
| Mid-floor apartment | 129 | — | — |
| Maisonette | 75 | — | — |
Main space heating fuel
| Fuel | Certificates | Share | Median kWh/m²/yr |
|---|---|---|---|
| Heating Oil | 11,521 | 66.6% | — |
| Electricity | 3,326 | 19.2% | — |
| Solid Multi-Fuel | 1,032 | 6.0% | — |
| Mains Gas | 621 | 3.6% | — |
| Bulk LPG (propane or butane) | 482 | 2.8% | — |
| House Coal | 71 | 0.4% | — |
| Wood Pellets (bulk supply for | 56 | 0.3% | — |
| Manufactured Smokeless Fuel | 52 | 0.3% | — |
| Sod Peat | 46 | 0.3% | — |
| Bottled LPG | 43 | 0.2% | — |
One certificate is one assessment of one dwelling, not one dwelling: a home rated twice appears twice. How this is counted.