ICFAI Business School (IBS), Dehradun

Based on the programme strengths highlighted on NTPC School of Business's website and educational ranking portals, the top course offered at the institute is:

MBA in Power Management

Some key reasons why the MBA in Power Management seems to be their flagship course:

1. Uniquely Specialized: The programme is specially designed for the power and energy sector. This gives graduates an edge in relevant job roles.

2. Industry-Oriented Curriculum: The course is crafted in collaboration with IIM-Calcutta with subjects like power trading, renewable energy management, energy laws etc. directly applicable for the sector.

3. Strong Placements: As per reports, graduates get placed majorly in power, oil and gas companies at leadership posts indicating good ROI.

4. Faculty Pedigree: Faculty is highly qualified with past experience in the power industry to provide the right guidance.

5. Live Projects: Program has live case study projects for practical orientation.

While NTPC SOB also has other courses like Project Management, Business Analytics, Finance - their tailored MBA programme for the power management sector seems to be their most popular course making it officially their flagship offering.