Lifecycle Bid Evaluation with Delivery Penalty
Your company is evaluating three bids for a continuously operated pump. The hydraulic duty is 150 kW at 6,000 hours per year; energy costs $0.10/kWh and the project life is 10 years with an 8% discount rate. Bid A: capital $180,000, efficiency 78%, maintenance $8,000/year, delivery 12 weeks. Bid B: capital $220,000, efficiency 85%, maintenance $5,000/year, delivery 16 weeks. Bid C: capital $150,000, efficiency 72%, maintenance $12,000/year, delivery 8 weeks. The project needs the pump in 12 weeks; a delay costs $5,000 per week in liquidated damages, but the supplier contract may cap this at $20,000. The purchasing manager recommends Bid C because it is $70,000 cheaper than Bid B and delivery is fastest. Operations prefers Bid B for energy efficiency. The annual annuity factor at 8% for 10 years is 6.710.
1. Calculate the annual energy cost and 10-year lifecycle cost (PV) for each bid, including capital and maintenance. Which bid has the lowest lifecycle cost?
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Input power = hydraulic power / efficiency. Annual energy cost = input power x 6,000 h x $0.10/kWh. A: 150/0.78 = 192.3 kW; 192.3 x 6,000 x 0.10 = $115,385/yr. Annual total = $115,385 + $8,000 = $123,385. PV = $123,385 x 6.710 = $827,900; plus $180,000 = $1,007,900. B: 150/0.85 = 176.5 kW; energy = $105,882/yr; annual total = $110,882. PV = $744,000; plus $220,000 = $964,000. C: 150/0.72 = 208.3 kW; energy = $125,000/yr; annual total = $137,000. PV = $919,300; plus $150,000 = $1,069,300. Bid B has the lowest 10-year PV cost, about $964,000, before delivery delay. Adding the $20,000 delay cost gives about $984,000, still lower than A by about $24,000 and C by about $85,000. Bid C is the lowest capital cost but has the highest operating cost, so the purchasing manager's recommendation is not lifecycle-based.
2. Calculate the simple payback and incremental NPV of Bid B relative to Bid A, including delivery delay. Is the extra capital justified? Compare B with C as well.
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B vs A: annual savings = energy $9,502 + maintenance $3,000 = $12,502. Incremental capital = $40,000. Simple payback = 40,000/12,502 = 3.2 years. PV of savings = 12,502 x 6.710 = $83,900. NPV = 83,900 - 40,000 = $43,900 before delay; after $20,000 delay = $23,900. B still creates value. B vs C: B annual cost is $110,882 vs C $137,000, saving $26,118/yr; PV = $175,300. Extra capital is $70,000, so NPV = $105,300 before delay; after $20,000 delay = $85,300. B remains preferred. The delivery delay must be secured by contract; if B cannot meet 12 weeks and the delay cost is much higher than $20,000, re-evaluate A, which is the next-lowest lifecycle cost and meets the schedule.
3. What contract terms and risk mitigations should be negotiated before awarding to Bid B?
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Negotiate: a firm delivery schedule with weekly milestones and a $5,000/week LD clause capped at $20,000; a performance test at the specified efficiency, with correction curves and a capacity/head guarantee; a warranty and spare-parts package; payment retention until commissioning; vendor responsibility for commissioning support; documentation of the hydraulic and efficiency test; a change-order clause for pulp/viscosity changes; and a contingency plan if delivery slips. Also require the vendor to provide energy consumption verification and a list of subcontractors. If the vendor refuses the LD or efficiency guarantee, the apparent NPV advantage may not justify the schedule and performance risk.