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Building Energy Ratings in Co. Monaghan
13,817 certificates · median 182 kWh/m²/yr · rank 19 of 52 counties on the share rated B3 or better
The national median is 178 kWh/m²/yr. 41.2% of the certificates on the 2009 scale are B3 or better; 21.8% are E, F or G.
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Ratings
2009 scale, A1 to E2 — 11,722 certificates
| Rating | Certificates | Share |
|---|---|---|
| A1 | 100 | 0.9% |
| A2 | 1,261 | 10.8% |
| A3 | 939 | 8.0% |
| B1 | 663 | 5.7% |
| B2 | 687 | 5.9% |
| B3 | 1,179 | 10.1% |
| C1 | 1,319 | 11.3% |
| C2 | 1,168 | 10.0% |
| C3 | 1,157 | 9.9% |
| D1 | 1,168 | 10.0% |
| D2 | 1,035 | 8.8% |
| E1 | 609 | 5.2% |
| E2 | 437 | 3.7% |
2026 scale, A0 to E — 608 certificates
| Rating | Certificates | Share |
|---|---|---|
| A0 | 62 | 10.2% |
| A | 109 | 17.9% |
| B | 215 | 35.4% |
| C | 148 | 24.3% |
| D | 50 | 8.2% |
| E | 24 | 3.9% |
F and G — the same on both scales
| Rating | Certificates | Share of all certificates |
|---|---|---|
| F | 515 | 3.7% |
| G | 972 | 7.0% |
⚠️ 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 | 13,817 |
| Median energy use | 182 kWh/m²/yr |
| Median CO₂ | 43.4 kg CO₂/m²/yr |
| Median floor area | 115 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 | 2.38 W/m²K |
| Median heating system efficiency | 86% |
| Certificates with solar PV | 197 (1.4%) |
| Median renewable energy ratio | 0.01 |
| National median energy use | 178 kWh/m²/yr |
By period of construction
| Built | Certificates | Median kWh/m²/yr | Median wall U-value |
|---|---|---|---|
| before 1900 | 398 | 352 | 1.50 |
| 1900–1944 | 1,662 | 366 | 1.56 |
| 1945–1969 | 943 | 286 | 0.60 |
| 1970–1979 | 1,640 | 247 | 0.57 |
| 1980–1990 | 1,418 | 217 | 0.41 |
| 1991–1999 | 1,210 | 196 | 0.49 |
| 2000–2004 | 1,852 | 174 | 0.54 |
| 2005–2009 | 2,729 | 145 | 0.37 |
| 2010–2018 | 574 | 58 | 0.20 |
| 2019 or later | 1,391 | 40 | 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 | 6,516 | — | — |
| Semi-detached house | 3,441 | — | — |
| Mid-terrace house | 1,542 | — | — |
| End of terrace house | 941 | — | — |
| Top-floor apartment | 408 | — | — |
| House | 352 | — | — |
| Ground-floor apartment | 338 | — | — |
| Mid-floor apartment | 232 | — | — |
| Maisonette | 35 | — | — |
Main space heating fuel
| Fuel | Certificates | Share | Median kWh/m²/yr |
|---|---|---|---|
| Heating Oil | 8,667 | 62.7% | — |
| Electricity | 3,324 | 24.1% | — |
| Mains Gas | 1,053 | 7.6% | — |
| Solid Multi-Fuel | 335 | 2.4% | — |
| Bulk LPG (propane or butane) | 293 | 2.1% | — |
| House Coal | 37 | 0.3% | — |
| Bottled LPG | 24 | 0.2% | — |
| Wood Pellets (bulk supply for | 20 | 0.1% | — |
| Manufactured Smokeless Fuel | 12 | 0.1% | — |
One certificate is one assessment of one dwelling, not one dwelling: a home rated twice appears twice. How this is counted.