This study shows, through several analyses, ways to reduce costs with electric power in supermarkets. For this purpose, one of those establishments was visited and several data were collected for subsequent analysis. The results have shown that the combinations of several actions of energy efficiency can be applied when the objective is the reduction of costs with electric power.
Keywords:
Energy efficiency; Analyses; Reduction of Tariff of Electric power; Supermarkets
| Green Hourly Rate Table - Year 2015 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Demanda (kW) | Consumo (kWh) | Load Factor (%) | Unit Cost (R$/kWh) | Custo (R$/mês) | Comente | |||||||||
| Contrato | Contract | Measure | Billed | Reactive Sumpluss | Measure | Partial | Custo Total | |||||||
| Not Used | Used | |||||||||||||
| Jul | Out | 230 | 229 .46 | 0 .54 | 229 .46 | 0 .00 | 95 766 | 380 | 62 .85 | 0 .5936 | 56 850 .02 | 57 881 .17 | Red Flag | |
| Peak | 140 .52 | 659 | 1 | 7 .11 | 1 .5647 | 1 031 .15 | R$ 8 158 .68 | |||||||
| Ago | Out | 230 | 223 .17 | 6 .83 | 223 .17 | 0 .00 | 98 475 | 159 | 66 .45 | 0 .6394 | 62 967 .55 | 64 299 .98 | Red Flag | |
| Peak | 162 .75 | 788 | 0 | 7 .34 | 1 .6909 | 1 332 .42 | R$ 8 382 .28 | |||||||
| Set | Out | 230 | 223 .17 | 6 .83 | 223 .17 | 0 .00 | 94 642 | 82 | 63 .87 | 0 .6297 | 59 599 .52 | 61 584 .48 | Red Flag | |
| Peak | 175 .94 | 1 191 | 0 | 10 .26 | 1 .6666 | 1 984 .96 | R$ 7 798 .55 | |||||||
| Out | Out | 230 | 234 .78 | 0 .00 | 234 .78 | 0 .00 | 93 185 | 63 | 59 .77 | 0 .6176 | 57 554 .45 | 59 176 .47 | Yellow Flag | |
| Peak | 174 .52 | 981 | 0 | 8 .52 | 1 .6534 | 1 622 .02 | R$ 6 420 .40 | |||||||
| Nov | Out | 230 | 246 .59 | 0 .00 | 246 .59 | 0 .00 | 102 670 | 16 | 62 .70 | 0 .6222 | 63 877 .01 | 0 .00 | Green Flag | |
| Peak | 1 .00 | 32 | 0 | 48 .48 | 1 .6600 | 53 .12 | R$ 7 032 .12 | |||||||
| Dez | Out | 230 | 241 .67 | 0 .00 | 241 .67 | 0 .00 | 98 185 | 0 | 61 .19 | 0 .6405 | 62 888 .14 | 32 568 .84 | Green Flag | |
| Peak | 1 .00 | 0 | 0 | 0 .15 | 0 .6105 | 0 .06 | R$ 6 925 .27 | |||||||
| Average | ||||||||||||||
| Out | 230 | 233 | 2 | 233 | 0 | 97 154 | 117 | 62 .76 | 0 .6238 | 60 622 .78 | 61 626 .74 | |||
| Peak | 109 | 609 | 0 | 8 .44 | 1 .4744 | 1 003 .96 | ||||||||
| Green Hourly Rate Table - Year 2016 | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Demanda (kW) | Consumo (kWh) | Load Factor (%) | Unit Cost (R$/kWh) | Custo (R$/mês) | Coments | ||||||||
| Contract | Measure | Billed | Reactive Sumpluss | Measure | Reactive Sumpluss | Partial | Total Cost | ||||||
| Not Used | Used | ||||||||||||
| Jan | Out | 230 | 258.79 | 0.00 | 258.79 | 0.00 | 104 410 | 8 | 60.76 | 0.6451 | 67 357.26 | 67 357.26 | Red Flag |
| Peak | 0.00 | 0 | 0 | 0.00 | 0.0000 | 0.00 | R$ 7 374.79 | ||||||
| Fev | Out | 230 | 247.77 | 0.00 | 247.77 | 0.00 | 105 353 | 3 | 64.04 | 0.6445 | 67 902.39 | 67 902.39 | Red Flag |
| Peak | 0.00 | 0 | 0 | 0.00 | 0.0000 | 0.00 | R$ 7 190.12 | ||||||
| Mar | Out | 230 | 246.98 | 0.00 | 246.98 | 0.00 | 98 382 | 0 | 59.99 | 0.6217 | 61 166.95 | 61 183.93 | Red Flag |
| Peak | 0.00 | 10 | 0 | 0.00 | 1.6982 | 16.98 | R$ 4 028.39 | ||||||
| Apr | Out | 230 | 235.17 | 0.00 | 235.17 | 0.00 | 98 104 | 0 | 62.83 | 0.5885 | 57 730.30 | 57 909.95 | Yellow Flag |
| Peak | 0.00 | 108 | 0 | 0.00 | 1.6634 | 179.65 | R$ 2 015.02 | ||||||
| May | Out | 230 | 232.61 | 0.00 | 232.61 | 0.00 | 97 539 | 7 | 63.15 | 0.5632 | 54 937.03 | 55 341.18 | Green Flag |
| Peak | 57.22 | 248 | 0 | 6.57 | 1.6296 | 404.15 | R$ 0.00 | ||||||
| Jun | Out | 230 | 200.73 | 29.27 | 200.73 | 0.00 | 91 675 | 0 | 68.78 | 0.5628 | 51 599.08 | 52 225.75 | Green Flag |
| Peak | 84.67 | 385 | 0 | 6.89 | 1.6277 | 626.67 | R$ 0.00 | ||||||
| Jul | Out | 230 | 205.45 | 24.55 | 205.45 | 0.00 | 86 202 | 0 | 63.19 | 0.5281 | 45 522.08 | 46 589.64 | Green Flag |
| Peak | 151.49 | 664 | 0 | 6.64 | 1.6078 | 1 067.56 | R$ 0.00 | ||||||
| Out | 230 | 233 | 8 | 233 | 0 | 97 381 | 3 | 63.08 | 0.5934 | 58 030.73 | 58 358.59 | ||
| Peak | 42 | 202 | 0 | 7.31 | 1.1752 | 327.86 | |||||||
| Rate Comparative | Green Tariff | Blue Tariff | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Demand | Contract (kW) | Billed (not used) | Billed (not used) | ||||||
| Out | Peak Time | Out | Peak Time | Out | Peak Time | ||||
| (a) | 230 | 230 | 0,00 | 0 | 0,00 | 0,00 | |||
| Mesure (kW) | Billed | Billed | |||||||
| Out | Peak Time | Out | Peak Time | Out | Peak Time | ||||
| (b) | 241,67 | 241,67 | 4.318,68 | 0 | 4.318,68 | 10.800,79 | |||
| Consuption | Active (kWh) | Billed | Billed | ||||||
| Out | Peak Time | Out | Peak Time | Out | Peak Time | ||||
| (c) | 98185 | 9818,5 | 42.319,55 | 15.714,45 | 42.319,55 | 6.012,77 | |||
| Reactive Sumplus | Billed | Billed | |||||||
| Out | Peak Time | Out | Peak Time | Out | Peak Time | ||||
| 0 | 0 | 0,00 | 0 | 0,00 | 0 | ||||
| Cost | (d) | TOTAL | R$ 62.352,68 | R$ 63.451,80 | |||||
| Average Price (R$/MWh) | 577,32 | 587,50 | |||||||
| Load Factor | Out | Peak Time | Out | Peak Time | |||||
| 61% | 62% | 61% | 62% | ||||||
| Month | Green Tariff | Blue Tariff | ||
|---|---|---|---|---|
| jul/15 | R$ 72.643,59 | R$ 65.291,38 | ||
| aug/15 | R$ 69.959,49 | R$ 63.252,22 | ||
| sep/15 | R$ 69.050,48 | R$ 62.866,64 | ||
| oct/15 | R$ 76.420,00 | R$ 70.459,80 | ||
| nov/15 | R$ 73.040,64 | R$ 67.238,13 | ||
| dez/15 | R$ 78.230,33 | R$ 73.457,61 | ||
| jan/16 | R$ 78.356,05 | R$ 72.087,57 | ||
| fev/16 | R$ 73.436,21 | R$ 68.244,82 | ||
| mar/16 | R$ 72.501,36 | R$ 65.505,63 | ||
| apr/18 | R$ 72.064,32 | R$ 65.060,11 | ||
| may/16 | R$ 67.770,22 | R$ 61.283,08 | ||
| jun/16 | R$ 63.961,17 | R$ 58.453,62 | ||
| Total: | R$ 867.433,86 | R$ 793.200,61 | ||
| Best Rate Option | Blue Tariff | |||
| Anual Savings | 8,56% | |||
| R$ 74.233,25 | ||||
| Supermarket "A" | |
|---|---|
| Concessionaire | Copel |
| Subgroup | A4 |
| Current Rate | Green |
| Energy Traiding Market | Blue |
| Type of Energy | Encouraged |
| Discount on TUSD | 50% |
| MWm | 0,16 |
| Generation Loss | 3% |
| Peak Consuption (kWh) | 16.693 |
| Out of Peak Consuption (kWh) | 97.276 |
| Demand (KW) | 240 |
| Captive Market - Blue | |||||||
|---|---|---|---|---|---|---|---|
| Values | Tariff | Total | |||||
| COPEL | Consuption | Out of Peak | 97.276 | x | 0,42772 | R$ 41.606,72 | |
| Peak Time | 16.693 | x | 0,6077 | R$ 10.144,12 | |||
| Demand | Out of Peak | 240 | x | 16,1715 | R$ 3.881,16 | ||
| Peak Time | 240 | x | 40,4441 | R$ 9.706,58 | |||
| Total | R$ 65.338,59 | ||||||
| Energy Trading Market - Blue | |||||||
| Values | Tariff | Total | |||||
| Distribution (COPEL) | Consumo | Out of Peak | 97.276 | x | 0,08838 | R$ 8.596,93 | |
| Peak Time | 16.693 | x | 0,08838 | R$ 1.475,23 | |||
| Demanda | Out of Peak | 240 | x | 8,08576 | R$ 1.940,58 | ||
| Peak Time | 240 | x | 20,2221 | R$ 4.853,29 | |||
| Taxes | 816 | R$ 816,00 | |||||
| Generation (Marketer) | Consuption + loss | 117.388 | x | 0,210 | R$ 24.651,40 | ||
| Tax Generation | 113.969 | x | 0,408 | x | 0,210 | R$ 9.775,61 | |
| Charges CCEE | 113.969 | x | 0,005 | R$ 569,84 | |||
| Total | R$ 52.678,90 | ||||||
| Projection of Economy | |||||||
| Economy = Captive Market - Energy Trading Market | R$ 12.659,69 | ||||||
| 19,38% | |||||||
| Price R$/MWh | Captive (R$) | Energy Trading Market (R$) | Economy | ||||
| R$ | % | ||||||
| 150 | 65.338,59 | 42.842,61 | 22.495,98 | 34,43% | |||
| 160 | 65.338,59 | 44.481,99 | 20.856,59 | 31,92% | |||
| 170 | 65.338,59 | 46.121,37 | 19.217,21 | 29,41% | |||
| 180 | 65.338,59 | 47.760,75 | 17.577,83 | 26,90% | |||
| 190 | 65.338,59 | 49.400,13 | 15.938,45 | 24,39% | |||
| 200 | 65.338,59 | 51.039,52 | 14.299,07 | 21,88% | |||
| 210 | 65.338,59 | 52.678,90 | 12.659,69 | 19,38% | |||
| 220 | 65.338,59 | 54.318,28 | 11.020,31 | 16,87% | |||
| 230 | 65.338,59 | 55.957,66 | 9.380,92 | 14,36% | |||
| 240 | 65.338,59 | 57.597,04 | 7.741,54 | 11,85% | |||
| 250 | 65.338,59 | 59.236,42 | 6.102,16 | 9,34% | |||
| Economy: | Value: |
| Demand Ajustement (Yearly) | R$ 1.868,70 |
| Change to Blue Rate (Yearly) | R$ 74.233,25 |
| Energy Trading Market (Monthly) | R$ 12.659,69 |
| Light Switch (Monthly) | R$ 4.034,15 |
| Total (Monthly) | R$ 23.035,67 |
| Total (Yearly) | R$ 276.428,03 |
| Results of Simulation | |
| Total Paid (Avarage of the last 12 months) | R$ 60.032,44 |
| Total Paid (Adjustment cited) | R$ 43.182,87 |
| Total (Monthly) | R$ 16.849,57 |
| 28,07% | |
