Lated with an Excel sheet, as shown in Table five. In Table five, A = 1, B = 346.86, and C = 30,121.742. The discounted payback period is calculated working with Equation (7) and is equal to 1.01 years. As a result of fluctuating oil costs and as the availability and price of LED lamps varies from location to spot, the authors performed a sensitivity analysis with varied costs of electrical 4-DAMP medchemexpress YQ456 Cancer energy and LED lamp price to check the economic feasibility of replacing HPS lamps with LED lamps. The outcomes of sensitivity analysis are presented in Figure four.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 four. Impact of variedEffect of varied costs of electrical energy the discounted payback discounted payback period: (a) Figure four. rates of electricity and LED lamp on and LED lamp on the period: (a) Power expense 0.05 /kWh (b) Power cost 0.06 /kWh (c) Power price 0.078 /kWh (d) Power cost 0.09 /kWh (e) Power expense 0.1 /kWh (f) Energy Energy cost 0.05 /kWh (b) Power price 0.06 /kWh (c) Power price 0.078 /kWh (d) Power price price 0.12 /kWh (g) Power expense 0.18 /kWh (h) Power price 0.23 /kWh.0.09 /kWh (e) Power price 0.1 /kWh (f) Power price 0.12 /kWh (g) Power price 0.18 /kWh (h) Energy cost 0.23 /kWh. in CO2 Emissions When the HPS Lamp Is Replaced with all the LED Lamp five. ReductionIn Oman, 97.five with the electrical energy generated is from organic gas [39]. According to the Table five. Calculation of discounted payback period. Thegenerated from organic gas outcomes within the emisInternational Power Agency, electricity color shows the transition from adverse to good worth and also the parameters per kWh of generated electrical energy [40]. In Oman, each the open-cycle sion of 400 g of CO2 chosen. gas turbine (OCGT), which has an efficiency of 30 , along with the combined-cycle gas turbine Year Quantity Discounted Money Flow Cum.Sum (CCGT), with an efficiency of roughly 45 , are applied. According to a seven-year statement of 0 -32,878.35 -32,878.35 energy generation in Oman by the -32,878.35 Oman Power and Water Procurement Business [35], 1 35,134 32,531.48148 the CCGT generates 8390 MW, and the OCGT generates 1945 -346.8685185 this, the reMW. According to two 35,134 30,121.74211 29,774.87359 duction in CO2 emissions is analyzed for the streetlight technique 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 5 35,134 23,911.61004 107,401.5244 the LED lamp will be 106.876 tonnes, therefore saving millions of dollars and substantial amounts of 6 emissions. 7 Payback= 1.Sensitivity analysis shows that in regions with higher electricity prices, it is actually hugely encouraged to replace the energy-inefficient lamps with energy-efficient LED lamps, asEnergies 2021, 14,13 ofthe discounted payback period is very quick. In regions exactly where the electrical energy prices are low, it can be nonetheless economically viable to replace the energy-inefficient HPS lamps with LED lamps, even together with the higher investment expense of LED lamps. Using a low electricity price tag of 0.05 /kWh and high cost 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 together with the LED Lamp In Oman, 97.5 in the.