Energy Performance Certificate
10 Gelli Street, Port Tennant, SA1 8NJ
Energy rating
Current: 79 C | Potential: 81 B
Environmental impact (CO₂)
Current: 78
| Potential: 81
| Field | Value |
|---|---|
| LMK KEY | 0390-2135-9650-2596-4271 |
| ADDRESS1 | 10 Gelli Street |
| ADDRESS2 | Port Tennant |
| ADDRESS3 | — |
| POSTCODE | SA1 8NJ |
| BUILDING REFERENCE NUMBER | — |
| CURRENT ENERGY RATING | C |
| POTENTIAL ENERGY RATING | B |
| CURRENT ENERGY EFFICIENCY | 79 |
| POTENTIAL ENERGY EFFICIENCY | 81 |
| PROPERTY TYPE | House |
| BUILT FORM | Mid-Terrace |
| INSPECTION DATE | 2026-05-15 |
| LOCAL AUTHORITY | W06000011 |
| CONSTITUENCY | W07000103 |
| COUNTY | — |
| LODGEMENT DATE | 2026-05-17 |
| TRANSACTION TYPE | Grant scheme |
| ENVIRONMENT IMPACT CURRENT | 78 |
| ENVIRONMENT IMPACT POTENTIAL | 81 |
| ENERGY CONSUMPTION CURRENT | 120 |
| ENERGY CONSUMPTION POTENTIAL | 103 |
| CO2 EMISSIONS CURRENT | 1.7 |
| CO2 EMISS CURR PER FLOOR AREA | 21 |
| CO2 EMISSIONS POTENTIAL | 1.5 |
| LIGHTING COST CURRENT | 50 |
| LIGHTING COST POTENTIAL | 50 |
| HEATING COST CURRENT | 661 |
| HEATING COST POTENTIAL | 576 |
| HOT WATER COST CURRENT | 277 |
| HOT WATER COST POTENTIAL | 277 |
| TOTAL FLOOR AREA | 81 |
| ENERGY TARIFF | Single |
| MAINS GAS FLAG | Y |
| FLOOR LEVEL | — |
| FLAT TOP STOREY | N |
| FLAT STOREY COUNT | 2 |
| MAIN HEATING CONTROLS | Programmer, TRVs and bypass |
| MULTI GLAZE PROPORTION | 100 |
| GLAZED TYPE | — |
| GLAZED AREA | — |
| EXTENSION COUNT | 1 |
| NUMBER HABITABLE ROOMS | 3 |
| NUMBER HEATED ROOMS | 3 |
| LOW ENERGY LIGHTING | 100 |
| NUMBER OPEN FIREPLACES | — |
| HOTWATER DESCRIPTION | From main system |
| HOT WATER ENERGY EFF | Good |
| HOT WATER ENV EFF | Good |
| FLOOR DESCRIPTION | Solid, no insulation (assumed) |
| FLOOR ENERGY EFF | N/A |
| FLOOR ENV EFF | N/A |
| WINDOWS DESCRIPTION | High performance glazing |
| WINDOWS ENERGY EFF | Good |
| WINDOWS ENV EFF | Good |
| WALLS DESCRIPTION | Granite or whin, as built, no insulation (assumed) |
| WALLS ENERGY EFF | Poor |
| WALLS ENV EFF | Poor |
| SECONDHEAT DESCRIPTION | None |
| SHEATING ENERGY EFF | N/A |
| SHEATING ENV EFF | N/A |
| ROOF DESCRIPTION | Pitched, 300 mm loft insulation |
| ROOF ENERGY EFF | Very Good |
| ROOF ENV EFF | Very Good |
| MAINHEAT DESCRIPTION | Boiler and radiators, mains gas |
| MAINHEAT ENERGY EFF | Good |
| MAINHEAT ENV EFF | Good |
| MAINHEATCONT DESCRIPTION | Programmer, TRVs and bypass |
| MAINHEATC ENERGY EFF | Average |
| MAINHEATC ENV EFF | Average |
| LIGHTING DESCRIPTION | Excellent lighting efficiency |
| LIGHTING ENERGY EFF | Very Good |
| LIGHTING ENV EFF | Very Good |
| MAIN FUEL | mains gas (not community) |
| WIND TURBINE COUNT | 0 |
| HEAT LOSS CORRIDOR | — |
| UNHEATED CORRIDOR LENGTH | — |
| FLOOR HEIGHT | 2.73 |
| PHOTO SUPPLY | 25 |
| SOLAR WATER HEATING FLAG | N |
| MECHANICAL VENTILATION | mechanical extract, decentralised (MEV dc) |
| ADDRESS | 10 Gelli Street, Port Tennant |
| LOCAL AUTHORITY LABEL | Swansea |
| CONSTITUENCY LABEL | Neath and Swansea East |
| POSTTOWN | SWANSEA |
| CONSTRUCTION AGE BAND | England and Wales: 1900-1929 |
| LODGEMENT DATETIME | 2026-05-17 10:18:37 |
| TENURE | owner-occupied |
| FIXED LIGHTING OUTLETS COUNT | 10 |
| LOW ENERGY FIXED LIGHT COUNT | 10 |
| UPRN | 100100394407 |
| UPRN SOURCE | Energy Assessor |
| REPORT TYPE | 2 |
| Source file | certificates-2026.csv |
| COUNTRY | Wales |
| REGION | W99999999 |
| Address display | — |
| Nation | ew |