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Cost savings glass doors for multidecks

The savings table is based on the reduction of kWh consumption of the connected refrigeration system. Assuming a standard energy-efficient refrigeration system that is often used in the supermarket. Assuming an average opening frequency, 20% of additional cleaning and restocking costs and an average store temperature of < 20°C. The height of the glass or the display affects the savings on cold generation.

Cost savings table for multidecks

energy price
€/kWh		 € 0,10 € 0,11 € 0,12 € 0,13 € 0,14 € 0,15
glass height Saving Saving Saving Saving Saving Saving
mm €/m €/m €/m €/m €/m €/m
1400 €74 €81 €89 €96 € 103 € 111
1500 €80 €88 €96 € 104 € 112 € 120
1600 €98 € 108 € 118 € 128 € 138 € 148
1700 € 105 € 115 € 125 € 136 € 146 € 157
1800 € 111 € 122 € 133 € 144 € 155 € 166
1900 € 123 € 135 € 148 € 160 € 172 € 185

Return period = total investment / (number of metres x savings per metre). Suppose: total investment for 30 metres of ESTEM 1800 mm-high glass covers = €12,500 at an energy price of € 0.13/kWh. Return period will be €12,500 / (30x€144) = 2.8 years without EIA advantage. With EIA advantage, the return period (€12,500 - €1,200) / (30 x €144) = 2.6 years. EIA advantage net is approximately 10% of the investment. Taking the savings on heating costs into account, the return period will be even shorter.

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