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 employing Equation (7) and is equal to 1.01 years. As a consequence 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 prices of electricity and LED lamp cost to verify the economic feasibility of replacing HPS lamps with LED lamps. The outcomes of sensitivity evaluation are presented in Figure 4.Energies 2021, 14,Energies 2021, 14, x FOR PEER REVIEW10 of11 of(a)(b)(c)Figure 4. 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 4. Impact of variedEffect of varied prices of electrical Lumiflavin Purity energy the discounted payback discounted payback period: (a) Figure four. costs of electrical energy and LED lamp on and LED lamp on the period: (a) Energy price 0.05 /kWh (b) Energy price 0.06 /kWh (c) Energy price 0.078 /kWh (d) Power price 0.09 /kWh (e) Power cost 0.1 /kWh (f) Energy Energy price 0.05 /kWh (b) Power cost 0.06 /kWh (c) Energy price 0.078 /kWh (d) Power cost price 0.12 /kWh (g) Power expense 0.18 /kWh (h) Power cost 0.23 /kWh.0.09 /kWh (e) Energy cost 0.1 /kWh (f) Energy cost 0.12 /kWh (g) Energy cost 0.18 /kWh (h) Energy price 0.23 /kWh. in CO2 Emissions When the HPS Lamp Is Replaced with the LED Lamp 5. ReductionIn Oman, 97.5 from the electricity generated is from natural gas [39]. In accordance with the Table 5. Calculation of discounted payback period. Thegenerated from organic gas final results within the emisInternational Energy Agency, electrical energy color shows the transition from negative to good worth and also the parameters per kWh of generated electricity [40]. In Oman, both the open-cycle sion of 400 g of CO2 selected. gas turbine (OCGT), which has an efficiency of 30 , as well as the combined-cycle gas turbine Year Quantity Discounted Money Flow Cum.Sum (CCGT), with an efficiency of roughly 45 , are utilised. Determined by a seven-year statement of 0 -32,878.35 -32,878.35 power generation in Oman by the -32,878.35 Oman Energy and Water Procurement Business [35], 1 35,134 32,531.48148 the CCGT generates 8390 MW, as well as the OCGT generates 1945 -346.8685185 this, the reMW. According to 2 35,134 30,121.74211 29,774.87359 Raltegravir-d4 Autophagy duction in CO2 emissions is analyzed for the streetlight system below study, that is pre3 35,134 27,890.50196 57,665.37555 sented in Table six. 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 are going to be 106.876 tonnes, as a result saving millions of dollars and huge amounts of 6 emissions. 7 Payback= 1.Sensitivity analysis shows that in regions with higher electrical energy prices, it really is highly advisable to replace the energy-inefficient lamps with energy-efficient LED lamps, asEnergies 2021, 14,13 ofthe discounted payback period is quite brief. In regions exactly where the electricity prices are low, it is nonetheless economically viable to replace the energy-inefficient HPS lamps with LED lamps, even with all the higher investment price of LED lamps. Having a low electricity price of 0.05 /kWh and high expense of LED lamp ( 200 per lamp), the discounted payback was only three years, which proves the economic feasibility in addition to the reduction of tonnes of CO2 emissions. five. Reduction in CO2 Emissions When the HPS Lamp Is Replaced with all the LED Lamp In Oman, 97.5 of your.