In recent years, Bangladesh has been facing a steady rise in industrial energy demand, which makes it essential to look for power sources that are both sustainable and cost-effective. This paper explores the design and techno-economic performance of a 10 MW grid-connected solar photovoltaic (PV) plant planned for Chinabadh, Sirajganj. The analysis was carried out with NREL’s System Advisor Model (SAM) by using local weather and solar data to estimate the system’s performance and financial return. The plant is expected to generate around 19.4 GWh of electricity each year with a capacity factor of about 17.0%. From an economic view, the project shows promising results with an LCOE of 6.02 ¢/kWh, NPV of USD 556,000, and an IRR of 9.37%. A further advantage of the system is its potential to cut carbon emissions by a substantial amount—around 12.5 thousand ton each year, adding up to roughly 290 thousand ton over the project’s lifetime of 25 years. Overall, the results indicate that the proposed solar plant could genuinely benefit the surrounding industrial sector by ensuring a steadier power supply, reducing environmental pressures, and supporting Bangladesh’s long-term shift toward cleaner and more sustainable energy.