Why Long-Term Returns Depend on Execution Quality When businesses calculate solar ROI, they often focus on: Cost per kW Payback period Electricity savings But very few ask the most important question: How does EPC execution quality affect ROI over 25 years? Because solar is not a 2-year investment. It is a 25-year infrastructure asset. And execution determines whether projected savings become reality. Solar ROI Is Not Just About Installation Cost Two factories may install th