how to calculate depreciation?

A44 X & fox Depreciation B D E 38% of profits 30% of system cost $0.17 per kWh 3% 14 15 tax rate 16 tax credit 17 18 Electricity cost 19 annual increase 20 21 maintainance 22 annual increase 23 24 insurance $15 per kW 2% 0.30% of total cost 2% 25+ increase Total cost $ end-of-life salvage value to depreciate $ 105,000.00 15% 89,250.00 3.53% year $0.17 $23,652.000 $4,020.840 2 $0.175 $23,533.740 $4,120.758 $0.180 $23,416.071 $4,223.159 $0.186 $23,298.991 $4,328.104 26 27 hurdle rate 28 29 30 31 32 electricity cost 33 electricity generation 34 electricity cost savings 35 36 37 maintainance cost per kW 38 total maint cost 39 40 insurance cost 1 total insurance 42 total cost savings 3 tax on cost savings 44 Depreciation 45 Tax savings from depreciation $15.000 $225 $15.300 $230 $15.918 $239 $15.606 $234 0.30% 315.00 $ $3,480.84 $1.322.72 $ 0.00306 321.30 $ $3,569.96 $1,356.58 0.003183624 334.28 $3,755.05 $1.426.92 0.0031212 327.73 $ $3,661.34 $1,391.31 A44 X & fox Depreciation B D E 38% of profits 30% of system cost $0.17 per kWh 3% 14 15 tax rate 16 tax credit 17 18 Electricity cost 19 annual increase 20 21 maintainance 22 annual increase 23 24 insurance $15 per kW 2% 0.30% of total cost 2% 25+ increase Total cost $ end-of-life salvage value to depreciate $ 105,000.00 15% 89,250.00 3.53% year $0.17 $23,652.000 $4,020.840 2 $0.175 $23,533.740 $4,120.758 $0.180 $23,416.071 $4,223.159 $0.186 $23,298.991 $4,328.104 26 27 hurdle rate 28 29 30 31 32 electricity cost 33 electricity generation 34 electricity cost savings 35 36 37 maintainance cost per kW 38 total maint cost 39 40 insurance cost 1 total insurance 42 total cost savings 3 tax on cost savings 44 Depreciation 45 Tax savings from depreciation $15.000 $225 $15.300 $230 $15.918 $239 $15.606 $234 0.30% 315.00 $ $3,480.84 $1.322.72 $ 0.00306 321.30 $ $3,569.96 $1,356.58 0.003183624 334.28 $3,755.05 $1.426.92 0.0031212 327.73 $ $3,661.34 $1,391.31