ET Intelligence Group: Shares of NTPC have risen around 12% over the past three months compared with the 2.9% gain in the ET Power index. Investors are betting on the company's capacity addition and green energy initiatives amid potential future demand. India's largest power generator has an installed capacity of nearly 86 gigawatt (GW) as of December 2025 and nearly 33 GW under construction. It plans to add 6.5 GW of new thermal capacity while accelerating renewable additions through its subsidiary NTPC Green Energy (NGEL). It is also ramping up investments in energy storage and nuclear technologies under the SHANTI Act. Of the total 33 GW currently under construction, about 16.5 GW is coal-based, 1.9 GW is hydro, and roughly 15 GW comprises renewable projects. According to the company ma