Assess the financial feasibility of establishing a geothermal power plant and a tidal power plant in India.

Considering an initial investment of INR $10,000,000$ for the geothermal plant and INR $15,000,000$ for the

tidal plant, along with respective annual operating costs of INR $50,000$ and INR $70,000.$ The geothermal

plant generates $10,000$ MWh of electricity annually, sold at INR $100$ per MWh$,$ while the tidal plant

produces $12,000$ MWh of electricity annually, sold at INR $90$ per MWh$.$ Both projects have lifespans of $30$

years and $25$ years, respectively, and discount rates of $8\%$ for geothermal and $10\%$ for tidal. Determine

the net present value $($NPV$)$ of each project to evaluate their financial viability