← Business Models: Industry Specific (Infrastructure, Transport & Utilities) (all topics)

Turnkey vs equipment-only - utility solar EPC

Business Model & Unit Economics · Contracting & revenue model

What it is

Engineering, procurement and construction of large solar parks, won by competitive tender from developers and public agencies. The contractor supplies modules, structures, inverters and balance of plant and hands over a commissioned plant

Module cost dominates the contract value

Impact on industries

  • Volume visibility is exceptional - India crossed 150 GW of installed solar by Mar 2026 with roughly 42.5 GW expected in CY2026 alone
  • Short build cycles of 12-18 months mean fast revenue conversion compared with civil infrastructure
  • Low technical differentiation makes it intensely price-competitive, so EPC margins are thin and depend on procurement skill rather than engineering
  • Developer payment depends on project financial close and PPA signature, so contractor risk includes the offtake problem upstream

Industries affected