Item ALT 1 ALT 2 ALT 3 Interest Investment (FC) $3,212,813 $7,132,531 $17,259,427 0.15 Savings Salvage $703,640 $1,236,894 $2,786,213 $321,281 $499,277 $862,971 Useful life 10 20 40 PV of FC PV of 2nd FC ($3,212,813) ($7,132,531) ($17,259,427) ($794,158.24) ($435,799.63) PV of 3rd FC ($196,303.77) PV of 4th FC ($48,523.29) PV of salvage $79,415.75 $30,505.96 $3,221.68 PV salvage 2 $19,630.36 $1,863.92 PV salvage 3 $4,852.32 PV salvage 4 $1,199.42 Total Salvage PV PV of Savings $105,097.85 $32,370 $3,221.68 $3,531,406.36 $7,742,129.54 $18,505,409.25 NPV ($615,294.09) $206,169 $1,249,203.93 EUAW Payback Period ($92,639.96) $31,041.20 $188,082.75 4.565989711 5.766485244 6.194582754 4.57 Years 5.77 Years 6.19 Years Item Do Nothing Total Estimated Capital Cost (CAPEX) -Equipment - Ancillary Components - Labor, QA/QC, and Construction Oversight $0 Alt 1: In-kind Replacement with Newer Model $3,212,813 $0 $1,275,000 $0 $318,750 $0 $925,000 Alt. 2: Replace with High Efficiency Brayton-Cycle Co-regeneration System $7,132,531 $7,132,531 $725,000 $1,355,075 Alt. 3: Replace Entire Power Infrastructure with Hydrogen Fuel Cell Plant $17,259,427 $10,576,872 $1,250,750 - Engineering Fees, Permitting, Procurement - Risk Contingency $0 $275,000 $425,950 $0 $419,063 $1,426,506 Total Est. Annual OPEX $3,434,200 - Fuel $2,300,000 $2,730,560 $1,752,225 $2,197,307 $2,875,000 $987,766 $1,569,039 $647,987 $1,420,222 $0 Replacement Parts $78,000 $52,000 $36,400 $42,766 - Consumable Supplies $42,500 $13,000 $9,100 $15,789 - Chemicals and Lubricants $32,000 $20,480 $14,336 $0 - Service Fees $56,700 $42,855 $29,999 $89,432 - Labor - Junior Technicians $350,000 $325,000 $237,250 $100,000 - Labor - Sr. Techs/Foreman $250,000 $225,000 $175,000 $175,000 - Labor - Engineer Annual Budget for Energy Est. Net Annual Savings Est. Salvage Value Est. Useful Life (Years) $325,000 $300,000 $275,000 $225,000 $3,434,200 $3,434,200 $3,434,200 $3,434,200 $0 N/A $703,640 $321,281 -15 and counting 10 EUAW N/A N/A N/A $92,639.96 $615,294.09 ? N/A 4.57 Years 243 182 142,000,000 NPW IRR Payback Period/Breakeven Point GHG Emissions (tons-CO2 per year) Water Footprint (gallons per year) Full Power Noise Level (dB) at 20 ft. Technology Stability Risk Health & Safety Risk to Operators Technology Obsolescence Risk 168,000,000 90 VERY LOW MED to HIGH LOW 75 VERY LOW MED LOW $31,041 $206,169 ? 5.77 Years 150 110,000,000 70 LOW MED to HIGH 5 $2,786,213 $862,971 40 $188,082.75 $1,249,203.93 ? 6.19 Years 0 27,000,000 25 HIGH LOW UNKNOWN $1,236,894 $499,277 20