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Table 5 Electric motors retrofitting exercise report for industry C (1 kW h = $0.144) for 4800 h use per year

From: Retrofitting existing buildings to reduce electrical energy consumption and greenhouse gas emission in Nigerian food and beverage industries

Existing motorsReplacement
S/NExisting motorsQtyEnergy consumption of existing motor (kW h/yr)Proposed motor for replacing the existing motorCost of replacement plus cost of Installation ($)Energy consumption of new motor (kW h/yr)Energy saved as a result of replacement (kW h/yr)Cost of energy saved as a result of replacement ($)Payback period (month)
1Compressor motor 90 kw, 1500 rpm, 380 V, 87%41,489,655.17WEG motors 96%, 90 kw, 1500 rpm, 380 V11,934 + 4961,350,000.00139,655.1720,110.3430
2Air compressor motor 75kw, 1500 rpm, 400 V, 89%1303,370.79Baldor motors 95.4%, 75 kw, 1500 rpm, 400 V11,105 + 386283,018.8720,351.922,930.6847
3Dam pump 22 kw, 1500 rpm, 400 V, 86%7644,651.16WEG motors 94.3%, 22 kw, 1500 rpm, 400 V3652 + 148587,910.9256,740.248170.5939
4Pump 18.5 kw, 1500 rpm, 400 V, 83%3240,722.89VEM motors 93%,18.5 kw, 1500 rpm, 400 V3043 + 143214,838.7125,884.183727.3231
5E-motor 11 kw 1500 rpm,400 V, 85%10465,882.35ABB motor 92%, 11 kw 1500 rpm, 400 V1842 + 110430,434.7835,447.575104.4546
6 Pump 5.5 kw, 1500 rpm, 400 V, 80%5123,750.00Baldor motor 90.5%, 5.5 kw, 1500 rpm, 400 V.1175 + 89109,392.2714,357.732067.5137
Total 303,268,032.37   2,975,595.55292,436.8242,110.9