[20 Marks] GreenEnergy Solutions, a renewable energy company, is evaluating a proposed joint venture with SolarTech Industries to develop and manufacture next-generation solar panels. The joint venture would require an initial investment of $50 million, split equally between the two companies. The project is expected to have a 10-year lifespan, with production ramping up gradually. Year 1 production is estimated at 100,000 units, increasing by 20% annually for the next four years, then stabilizing for the remaining five years. The selling price is projected to start at $500 per unit but is expected to decrease by 5% annually due to technological advancements and market competition. Variable costs are initially $300 per unit but are anticipated to decrease by 3% per year due to efficiency improvements. Fixed costs are estimated at $10 million per year, increasing by 2% annually due to inflation. The joint venture will use accelerated depreciation (double declining balance) for the initial investment, with a salvage value of $5 million after 10 years. Both companies face a 25% tax rate and have a required rate of return of 15%. As the lead financial analyst for GreenEnergy Solutions, you've been tasked with evaluating this opportunity. Your analysis should include a detailed cash flow projection, NPV calculation, IRR, and profitability index. Additionally, conduct a scenario analysis considering best-case (20% higher sales, 10% lower costs) and worst-case (20% lower sales, 10% higher costs) scenarios. How would these scenarios impact the project's viability? Given the volatile nature of the renewable energy market and potential policy changes affecting green energy initiatives, what strategic considerations should be taken into account? How might the partnership dynamics between GreenEnergy Solutions and SolarTech Industries influence the project's success, and what governance structures would you recommend to mitigate potential conflicts?