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Appendix 1 Estimation of Energy Consumption in the Scottish Domestic Sector
Appendix 1.1 Calculations and estimations used
UK population split | Scotland pop = 5.06 million UK pop = 59.6 million Scotland represents = 8.5% of UK total population |
Split between space heating and non-space heating uses | Data used = DUKES data for total UK energy consumption: - Space heating = 58.00%for 2000
(Energy Consumption in the UK, DTI July 2002 para 3.2) - Typical electric energy used for domestic appliance
= 13.00%
TV, lights, fridges, washing, etc: BRE-based figure - Therefore, remainder = 29.00%
Predominantly hot water and cooking
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Degree-days to estimate effect of Scottish climate | 2002 Scottish degree-day correction factor = 17.95% See Appendix 1.2. |
Housing stock correction factor | Estimated correction factor taking account of differences in UK housing stock = 10.00% It is recognising that Scottish homes are generally thermally poorer than those in England (feedback from Scottish Executive - Housing, supported by findings from its recent publications. |
Estimated proportion of Scottish housing accessible to mains gas | This is believed to be slightly less than pro-rata UK population: UK average accessibility to gas = approx 90% Scotland accessibility to gas = approx 85% |
Appendix 1.2 Degree-day correction
2002 UK Degree-days | 01/02 | 02/02 | 03/02 | 04/02 | 05/02 | 06/02 | 07/02 | 08/02 | 09/02 | 10/02 | 11/02 | 12/02 | Total | Est % of UK popl'n | Weight x degree-days |
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1 Thames Valley | 264 | 201 | 207 | 152 | 86 | 39 | 21 | 8 | 37 | 126 | 172 | 258 | 1571 | 12 | 188.52 |
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2 South Eastern | 309 | 224 | 247 | 196 | 109 | 56 | 35 | 18 | 82 | 161 | 201 | 296 | 1934 | 11 | 212.74 |
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3 Southern | 279 | 214 | 230 | 186 | 123 | 65 | 45 | 26 | 61 | 134 | 155 | 257 | 1775 | 6 | 106.5 |
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4 South Western | 231 | 197 | 202 | 171 | 125 | 69 | 35 | 19 | 39 | 102 | 135 | 244 | 1569 | 5 | 78.45 |
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5 Severn Valley | 272 | 215 | 226 | 175 | 120 | 56 | 33 | 18 | 48 | 155 | 180 | 282 | 1780 | 5 | 89 |
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6 Midland | 309 | 251 | 248 | 190 | 125 | 56 | 37 | 17 | 56 | 180 | 218 | 314 | 2001 | 10 | 200.1 |
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7 West Pennines | 296 | 235 | 241 | 181 | 113 | 59 | 43 | 21 | 52 | 171 | 202 | 300 | 1914 | 5 | 95.7 |
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8 North Western | 298 | 266 | 262 | 212 | 139 | 73 | 60 | 28 | 75 | 223 | 226 | 344 | 2206 | 10 | 220.6 |
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9 Borders | 333 | 259 | 281 | 229 | 158 | 81 | 61 | 30 | 74 | 195 | 239 | 294 | 2234 | 2 | 44.68 |
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10 North Eastern | 345 | 249 | 271 | 213 | 135 | 69 | 59 | 31 | 77 | 201 | 244 | 335 | 2229 | 8 | 178.32 |
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11 East Pennines | 312 | 235 | 252 | 190 | 115 | 51 | 39 | 19 | 53 | 177 | 230 | 322 | 1995 | 6 | 119.7 |
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12 East Anglia | 310 | 240 | 251 | 194 | 122 | 55 | 37 | 21 | 56 | 172 | 211 | 305 | 1974 | 5 | 98.7 |
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13 W Scotland | 311 | 276 | 272 | 214 | 153 | 81 | 63 | 44 | 84 | 236 | 240 | 340 | 2314 | 3 | 69.42 |
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14 E Scotland | 329 | 291 | 282 | 231 | 150 | 75 | 66 | 38 | 80 | 221 | 253 | 311 | 2327 | 2 | 46.54 |
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15 NE Scotland | 333 | 307 | 296 | 239 | 158 | 85 | 68 | 46 | 88 | 228 | 238 | 308 | 2394 | 1 | 23.94 |
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16 Wales | 268 | 233 | 237 | 205 | 141 | 86 | 53 | 34 | 59 | 145 | 179 | 277 | 1917 | 5 | 95.85 |
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17 NI | 275 | 258 | 257 | 201 | 139 | 70 | 62 | 39 | 72 | 195 | 207 | 302 | 2077 | 3 | 62.31 |
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18 NW Scotland | 272 | 301 | 283 | 213 | 169 | 92 | 95 | 58 | 82 | 207 | 212 | 302 | 2286 | 1 | 22.86 |
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| | | | | | | | | | | | | | 100 | 1953.93 |
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Unweighted | | Weighted | |
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Number of UK Regions = | 18 | | |
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2002 UK Degree-day Average = | 2,028 | 2002 UK Degree-day Average = | 1953.9 |
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2002 Scottish Degree-day Average = | 2,311 | 2002 Scottish Degree-day Average = | 2305.0 |
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Scottish Degree-day Correction Factor | +0.1398 | Scottish Degree-day Correction Factor | +0.1795 |
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Appendix 1.3 2002 Energy consumption - Scottish domestic sector (thousand tonnes of oil equivalent)
| Solid ( mainly coal) | Natural gas | Electricity | Renew & heat sold | Oil based | Total | Comments |
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UK total domestic sector | 1810.2 | 32358.3 | 9848.2 | 276.5 | 3491.2 | 47784.4 | |
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Scottish population proportion | 155.7 | 2782.8 | 846.9 | 23.8 | 300.2 | 4109.5 | At 8.5% of UK population |
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Electricity for domestic goods @ 13% | | | 534.2 | | | 534.2 | All electric - for lights/fridges, TV, PC, etc |
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Revised total minus domestic goods | 155.7 | 2782.8 | 312.7 | 23.8 | 300.2 | 3575.2 | As pro-rata population minus ring-fenced electricity |
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Adjustment for low access to mains gas | | 2473.6 | | | | | Scottish gas reduced to 85/90 of pro-rata |
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Therefore 'missing' gas | | -309.2 | | | | | 'Missing' gas |
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Apply missing gas to other fuels pro-rata | 60.7 | 0.00 | 122.0 | 9.3 | 117.2 | 309.2 | Adjustment of others to make up for 'missing' gas |
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Total non-gas for space & water heating | 216.4 | 0.00 | 437.7 | 33.1 | 417.4 | | Re-calculated non-gas |
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Total fuel for space/water heating | 216.4 | 2473.6 | 437.7 | 33.1 | 417.4 | 3575.2 | Re-include gas |
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Scottish domestic energy for non-space heating | 72.1 | 824.5 | 144.9 | 11.1 | 139.1 | 1191.7 | As 29% of (100-13)% |
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Pro-rata Scottish for space heating | 144.3 | 1649.1 | 289.8 | 22.0 | 278.3 | 2383.5 | As 58% of (100-13)% |
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Scottish climate correction for heating | 25.9 | 296.2 | 52.1 | 4.0 | 50.0 | 428.1 | Scotland 17.95% more degree-days than UK average - see appendix 1.2 |
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Scottish housing condition correction | 17.0 | 194.5 | 34.2 | 2.6 | 32.8 | 281.2 | Assume 10% poorer condition. Can apply different % factors to check sensitivity |
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Total Scottish domestic space heating | 187.2 | 2139.8 | 376.1 | 28.6 | 361.1 | 3092.7 | After adjustment for degree-days and housing condition |
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Total Scottish domestic sector (ktoe) | 259.4 | 2964.3 | 1055.2 | 39.7 | 500.2 | 4818.7 | Sum of ring-fenced electricity + non-space heat + space heating |
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Total Scottish domestic sector ( TWh) | 3.02 | 34.48 | 12.27 | 0.46 | 5.82 | 56.04 | At 11630 kWh/toe |
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