Designs and builds the heaviest and slowest-to-make item in a substation: the core is stacked from CRGO steel, wound with copper, tanked, oil-filled and tested. Large units are made to order and take a year or more from order to delivery.
Why it matters
Transformers are the grid's tightest bottleneck worldwide. US large-transformer prices are up sharply since 2019 and lead times have more than doubled (BNEF, 2026), so Indian makers are exporting as well as serving a record domestic pipeline. Every major maker is adding capacity: Siemens Energy India approved ~₹2,060 Cr for 30,000 MVA (Feb 2026), and Hitachi Energy broke ground on a new factory at Karjan, Gujarat (Jun 2026).
Where the value pool sits
Margins have widened from high single digits to mid-teens or higher EBITDA for the leaders because demand exceeds capacity and pricing has reset. The pool is large and growing, but it is cyclical: new capacity arriving in FY27-FY28 and any export slowdown could bring pricing back down.
Key drivers
NEP plan to lift transformation capacity from ~1,251 GVA (2024) to ~2,342 GVA by 2032
Renewable pooling substations and BESS connections
US and European shortage pulling exports
Data-centre and industrial substations
Potential bottlenecks
CRGO electrical steel: India imports most of its need and supply is gated by BIS certification