Building Energy Ratings in Co. Kerry
43,652 certificates · median 196 kWh/m²/yr · rank 33 of 52 counties on the share rated B3 or better
Half of the dwellings rated in Co. Kerry use more than 196 kWh/m²/yr.
The national median is 178 kWh/m²/yr. 34.6% of the certificates on the 2009 scale are B3 or better; 22.9% are E, F or G.
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Ratings
2009 scale, A1 to E2 — 36,898 certificates
| Rating | Certificates | Share |
|---|---|---|
| A1 | 552 | 1.5% |
| A2 | 2,902 | 7.9% |
| A3 | 2,151 | 5.8% |
| B1 | 1,496 | 4.1% |
| B2 | 2,052 | 5.6% |
| B3 | 3,625 | 9.8% |
| C1 | 4,075 | 11.0% |
| C2 | 4,201 | 11.4% |
| C3 | 4,306 | 11.7% |
| D1 | 4,246 | 11.5% |
| D2 | 3,607 | 9.8% |
| E1 | 2,144 | 5.8% |
| E2 | 1,541 | 4.2% |
2026 scale, A0 to E — 2,121 certificates
| Rating | Certificates | Share |
|---|---|---|
| A0 | 186 | 8.8% |
| A | 314 | 14.8% |
| B | 710 | 33.5% |
| C | 595 | 28.1% |
| D | 191 | 9.0% |
| E | 125 | 5.9% |
F and G — the same on both scales
| Rating | Certificates | Share of all certificates |
|---|---|---|
| F | 1,636 | 3.7% |
| G | 2,997 | 6.9% |
⚠️ 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 | 43,652 |
| Median energy use | 196 kWh/m²/yr |
| Median CO₂ | 46.8 kg CO₂/m²/yr |
| Median floor area | 116 m² |
| Median wall U-value | 0.37 W/m²K |
| Median roof U-value | 0.22 W/m²K |
| Median floor U-value | 0.41 W/m²K |
| Median window U-value | 2.70 W/m²K |
| Median heating system efficiency | 86% |
| Certificates with solar PV | 584 (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 | 614 | 333 | 1.51 |
| 1900–1944 | 4,379 | 343 | 1.40 |
| 1945–1969 | 3,404 | 284 | 0.60 |
| 1970–1979 | 4,367 | 251 | 0.55 |
| 1980–1990 | 5,377 | 229 | 0.37 |
| 1991–1999 | 5,989 | 210 | 0.41 |
| 2000–2004 | 7,429 | 190 | 0.53 |
| 2005–2009 | 7,497 | 148 | 0.37 |
| 2010–2018 | 1,531 | 70 | 0.21 |
| 2019 or later | 3,065 | 42 | 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) |
|---|---|---|---|
| Detached house | 22,505 | — | — |
| Semi-detached house | 9,744 | — | — |
| Mid-terrace house | 3,722 | — | — |
| House | 1,921 | — | — |
| End of terrace house | 1,719 | — | — |
| Top-floor apartment | 1,495 | — | — |
| Ground-floor apartment | 1,358 | — | — |
| Mid-floor apartment | 919 | — | — |
| Maisonette | 230 | — | — |
| Apartment | 35 | — | — |
Main space heating fuel
| Fuel | Certificates | Share | Median kWh/m²/yr |
|---|---|---|---|
| Heating Oil | 25,571 | 58.6% | — |
| Electricity | 12,459 | 28.5% | — |
| Solid Multi-Fuel | 2,499 | 5.7% | — |
| Bulk LPG (propane or butane) | 1,684 | 3.9% | — |
| Mains Gas | 348 | 0.8% | — |
| Manufactured Smokeless Fuel | 348 | 0.8% | — |
| Bottled LPG | 151 | 0.3% | — |
| House Coal | 119 | 0.3% | — |
| Wood Pellets (bulk supply for | 103 | 0.2% | — |
| Wood Logs | 81 | 0.2% | — |
One certificate is one assessment of one dwelling, not one dwelling: a home rated twice appears twice. How this is counted.