Lated with an Excel sheet, as shown in Table 5. In Table 5, A = 1, B = 346.86, and C = 30,121.742. The discounted payback period is calculated making use of Equation (7) and is equal to 1.01 years. As a result of fluctuating oil rates and as the availability and price of LED lamps varies from place to location, the authors performed a sensitivity analysis with varied rates of electricity and LED lamp price to check the economic feasibility of replacing HPS lamps with LED lamps. The results of sensitivity analysis are presented in Figure four.Energies 2021, 14,Energies 2021, 14, x FOR PEER REVIEW10 of11 of(a)(b)(c)Figure four. Cont.Energies 2021, 14,Energies 2021, 14, x FOR PEER REVIEW11 of12 of(d)(e)(f)Figure four. Cont.Energies 2021, 14,Energies 2021, 14, x FOR PEER REVIEW12 of13 of(g)(h)Figure four. Impact of variedEffect of varied costs of electrical 1-Oleoyl lysophosphatidic acid Technical Information Energy the discounted payback discounted payback period: (a) Figure four. prices of electricity and LED lamp on and LED lamp on the period: (a) Power expense 0.05 /kWh (b) Power expense 0.06 /kWh (c) Energy price 0.078 /kWh (d) Energy cost 0.09 /kWh (e) Power expense 0.1 /kWh (f) Energy Power expense 0.05 /kWh (b) Energy cost 0.06 /kWh (c) Power expense 0.078 /kWh (d) Power price expense 0.12 /kWh (g) Energy price 0.18 /kWh (h) Power price 0.23 /kWh.0.09 /kWh (e) Power price 0.1 /kWh (f) Power cost 0.12 /kWh (g) Power expense 0.18 /kWh (h) Power cost 0.23 /kWh. in CO2 Emissions When the HPS Lamp Is Replaced with the LED Lamp five. ReductionIn Oman, 97.five in the electricity generated is from natural gas [39]. Based on the Table five. Calculation of discounted payback period. Thegenerated from natural gas outcomes in the emisInternational Energy Agency, electrical energy colour shows the transition from unfavorable to good worth and also the parameters per kWh of generated electricity [40]. In Oman, each the open-cycle sion of 400 g of CO2 selected. gas turbine (OCGT), which has an efficiency of 30 , plus the combined-cycle gas turbine Year Amount Discounted Cash Flow Cum.Sum (CCGT), with an efficiency of roughly 45 , are used. Based on a Amidepsine D Protocol seven-year statement of 0 -32,878.35 -32,878.35 energy generation in Oman by the -32,878.35 Oman Energy and Water Procurement Enterprise [35], 1 35,134 32,531.48148 the CCGT generates 8390 MW, as well as the OCGT generates 1945 -346.8685185 this, the reMW. Determined by two 35,134 30,121.74211 29,774.87359 duction in CO2 emissions is analyzed for the streetlight system under study, which is pre3 35,134 27,890.50196 57,665.37555 sented in Table 6. four 35,134 25,824.53885 83,489.9144 The resulting reduction in CO2 emissions per year upon replacing the HPS lamp with five 35,134 23,911.61004 107,401.5244 the LED lamp might be 106.876 tonnes, therefore saving millions of dollars and huge amounts of 6 emissions. 7 Payback= 1.Sensitivity analysis shows that in regions with high electricity costs, it’s hugely suggested to replace the energy-inefficient lamps with energy-efficient LED lamps, asEnergies 2021, 14,13 ofthe discounted payback period is quite quick. In regions where the electricity costs are low, it’s nonetheless economically viable to replace the energy-inefficient HPS lamps with LED lamps, even with the higher investment expense of LED lamps. Having a low electrical energy price of 0.05 /kWh and high price of LED lamp ( 200 per lamp), the discounted payback was only three years, which proves the financial feasibility besides the reduction of tonnes of CO2 emissions. 5. Reduction in CO2 Emissions When the HPS Lamp Is Replaced with all the LED Lamp In Oman, 97.5 with the.