LES services approximately 200 square miles within Lancaster County in Nebraska, comprising the cities of Lincoln, Prairie Home, Waverly, Walton, Cheney, and Emerald. Approximately 118,518 residential customers and 16,649 commercial and industrial customers. Table V and Table VI provide a summary of GHG emissions for each vehicle type based on the primary energy source used in each vehicle type for one mile and for one year. TABLE V. Greenhouse Gas Emissions Factors (grams per mile) for LES utility company CV DV CNG BEV Emissions (grams per mile) LES 2015 (17% Renewable) LES 2016 (47.1% Renewable) CO2 Equiv. 415 377 334 241 121.68 CO2 411 377 311 241 121.29 CO 9.4 0.3001 17.75 0.0845 0.0373 CH4 (Methane) 0.013 0.001 0.48 0.0027 0.0017 N2O 0.012 0.001 0.0375 0.0038 0.0013 NOx 0.252 0.451 0.29 0.27 0.2 SO2 0.012 0.009 0.0016 0.61 0.107 VOC 0.2096 0.1610 0.237 0.0042 0.0032 TABLE VI. Greenhouse Gas Emissions in lbs. for one year using an average driving distance of 12,000 miles. (1 lb = 453.592 g) CV DV CNG BEV Emissions per year (lbs.) LES 2015 (17% Renewable) LES 2016 (47.1% Renewable) CO2 Equiv. 10,979 9,973 8,836 6,376 3219.1 CO2 10,873 9,973 8,227 6,376 3208.78 CO 248.7 7.94 469.6 2.24 0.986 CH4 (Methane) 0.343 0.026 12.7 0.071 0.0441 N2O 0.317 0.026 0.99 0.101 0.0343 NOx 6.65 11.9 7.66 7.14 5.291 SO2 0.317 0.238 0.042 16.14 2.83 VOC 5.55 4.26 6.27 0.111 0.085 Greenhous Gas Definitions
Sulfur Dioxide (SO2) Emissions 2015 Actual Energy Source Percentage of Total Energy Production Grams of SO2 Emitted per kWh Contribution to Total SO2 Emitted per kWh Coal 67% x 2.05g = 1.37g Natural Gas 0.4% x 0.005g = 0 Landfill Gas 0.3% x 0 = 0 Nuclear 20.2% x 0 = 0 Renewables 12% x 0 = 0 Total = 1.37g per kWh or 0.37g per mile 2018 Planned Energy Source Percentage of Total Energy Production Grams of SO2 Emitted per kWh Contribution to Total SO2 Emitted per kWh Coal 31% x 2.05g = 0.636g Natural Gas 3% x 0.005g = 0 Nuclear 33% x 0 = 0 Renewables 33% x 0 = 0 Total = 0.64g per kWh or 0.17g per mile 2033 Planned Energy Source Percentage of Total Energy Production Grams of SO2 Emitted per kWh Contribution to Total SO2 Emitted per kWh Coal 14% x 2.05g = 0.287g Natural Gas 29% x 0.005g = 0.001g Nuclear 33% x 0 = 0 Renewables* 33% x 0 = 0 Total = 0.29g per kWh or 0.08g per mile Nitrogen Oxides (NOx) Emissions 2015 Actual Energy Source Percentage of Total Energy Production Grams of NOx Emitted per kWh Contribution to Total NOx Emitted per kWh Coal 67% x 0.876g = 0.587g Natural Gas 0.4% x 0.401g = 0.002g Landfill Gas 0.3% x 0.037g = 0g Nuclear 20.2% x 0 = 0 Renewables 12% x 0 = 0 Total = 0.589g per kWh or 0.159g per mile
2018 Planned Energy Source Percentage of Total Energy Production Grams of NOx Emitted per kWh Contribution to Total NOx Emitted per kWh Coal 31% x 0.876g = 0.272g Natural Gas 3% x 0.401g = 0.012g Nuclear 33% x 0 = 0 Renewables 33% x 0 = 0 Total = 0.284g per kWh or 0.077g per mile 2033 Planned Energy Source Percentage of Total Energy Production Grams of NOx Emitted per kWh Contribution to Total NOx Emitted per kWh Coal 14% x 0.876g = 0.123g Natural Gas 29% x 0.401g = 0.116g Nuclear 33% x 0 = 0 Renewables* 33% x 0 = 0 Total = 0.239g per kWh or 0.065g per mile Volatile Organic Compound (VOC) Emissions 2015 Actual Energy Source Percentage of Total Energy Production Grams of VOC Emitted per kWh [21],[22] Contribution to Total VOC Emitted per kWh Coal 67% x 0.014g = 0.0093800g Natural Gas 0.4% x 0.0169g = 0.0000676g Landfill Gas 0.3% x 0.272g = 0.0008160g Nuclear 20.2% x 0 = 0 Renewables 12% x 0 = 0 Total = 0.0102636g per kWh or 0.0031g per mile 2018 Planned Energy Source Percentage of Total Energy Production Grams of VOC Emitted per kWh [21],[22] Contribution to Total VOC Emitted per kWh Coal 31% x 0.014g = 0.00434g Natural Gas 3% x 0.0169g = 0.000507g Nuclear 33% x 0 = 0 Renewables 33% x 0 = 0 Total = 0.004847g per kWh or 0.0015g per mile 2033 Planned
Natural Gas 26% x 0.062g = 0.01612g Landfill Gas 0.9% x 2.68g = 0.02412g Renewables 47.1% x 0 = 0 Total = 0.1237g per kWh or 0.0373g per mile Methane (CH4) Emissions Using the individual emissions rates calculated below, the equivalent rate is 0.0027 grams CH4 per mile. 2015 Actual Energy Source Percentage of Total Energy Production Grams of CH4 Emitted per kWh Contribution to Total CH4 Emitted per kWh Coal 79.1% x 0.011g = 0.008701g Natural Gas 2.9% x 0.011g = 0.000319g Landfill Gas 0.9% x 0 = 0 Renewables 17.1% x 0 = 0 Total = 0.00902g per kWh or 0.0027g per mile 2016 Planned Energy Source Percentage of Total Energy Production Grams of CH4 Emitted per kWh Contribution to Total CH4 Emitted per kWh Coal 26% x 0.011g = 0.00286g Natural Gas 26% x 0.011g = 0.00286g Landfill Gas 0.9% x 0 = 0 Renewables 47.1% x 0 = 0 Total = 0.00572g per kWh or 0.0017g per mile Nitrous Oxide (N2O) Emissions Using the individual emissions rates calculated below, the equivalent rate is 0.0038 grams N2O per mile. 2015 Actual Energy Source Percentage of Total Energy Production Grams of N2O Emitted per kWh Contribution to Total N2O Emitted per kWh Coal 79.1% x 0.016g = 0.012656g Natural Gas 2.9% x 0.001g = 0.000029g Landfill Gas 0.9% x 0 = 0 Renewables 17.1% x 0 = 0 Total = 0.012685g per kWh or 0.0038g per mile 2016 Planned Energy Source Percentage of Total Energy Production Grams of N2O Emitted per kWh Contribution to Total N2O Emitted per kWh Coal 26% x 0.016g = 0.00416g
Natural Gas 26% x 0.001g = 0.00026g Landfill Gas 0.9% x 0 = 0 Renewables 47.1% x 0 = 0 Total = 0.00442g per kWh or 0.0013g per mile Sulfur Dioxide (SO2) Emissions Using the individual emissions rates calculated below, the equivalent rate is 0.61 grams SO2 per mile. 2015 Actual Energy Source Percentage of Total Energy Production Grams of SO2 Emitted per kWh Contribution to Total SO2 Emitted per kWh Coal 79.1% X 2.54g = 2.00914g Natural Gas 2.9% X 0.015g = 0.000435g Landfill Gas 0.9% X 0 = 0 Renewables 17.1% X 0 = 0 Total = 2.009575g per kWh or 0.61g per mile 2016 Planned Energy Source Percentage of Total Energy Production Grams of SO2 Emitted per kWh Contribution to Total SO2 Emitted per kWh Coal 26% X 2.54g = 0.6604g Natural Gas 26% X 0.015g = 0.0039g Landfill Gas 0.9% X 0 = 0 Renewables 47.1% X 0 = 0 Total = 0.6643g per kWh or 0.2g per mile Nitrogen Oxides (NOx) Emissions Using the individual emissions rates calculated below, the equivalent rate is 0.27 grams NOx per mile. 2015 Actual Energy Source Percentage of Total Energy Production Grams of NOx Emitted per kWh Contribution to Total NOx Emitted per kWh Coal 79.1% x 1.10g = 0.8701g Natural Gas 2.9% x 0.272g = 0.007888g Landfill Gas 0.9% x 0.037g = 0.000333g Renewables 17.1% x 0 = 0 Total = 0.878321g per kWh or 0.27g per mile 2016 Planned Energy Source Percentage of Total Energy Production Grams of NOx Emitted per kWh Contribution to Total NOx Emitted per kWh Coal 26% x 1.10g = 0.286g
Natural Gas 26% x 0.272g = 0.07072g Landfill Gas 0.9% x 0.037g = 0.000333g Renewables 47.1% x 0 = 0 Total = 0.357g per kWh or 0.107g per mile Volatile Organic Compound (VOC) Emissions 2015 Actual Energy Source Percentage of Total Energy Production Grams of VOC Emitted per kWh [21],[22] Contribution to Total VOC Emitted per kWh Coal 79.1% x 0.014g = 0.0110740g Natural Gas 2.9% x 0.0169g = 0.0004901g Landfill Gas 0.9% x 0.272g = 0.0024480g Renewables 17.1% x 0 = 0 Total = 0.0140121g per kWh or 0.0042g per mile 2016 Planned Energy Source Percentage of Total Energy Production Grams of VOC Emitted per kWh [21],[22] Contribution to Total VOC Emitted per kWh Coal 26% x 0.014g = 0.0036400g Natural Gas 26% x 0.0169g = 0.0043940g Landfill Gas 0.9% x 0.272g = 0.0024480g Renewables 47.1% x 0 = 0 Total = 0.0104820g per kWh or 0.0032g per mile