The order books of India's large EPC firms are a barometer of the investment cycle. Examine the drivers and risks of India's current private capex revival.

An order book is the value of contracts a firm has signed but not yet carried out. That makes it a leading indicator of future capex. Larsen & Toubro (L&T) aims to almost double its order book to ₹15 lakh crore by 2031, driven by energy, electrolysers, semiconductors and data centres [1]. This points to a revival that is real but depends on execution.

Drivers of the revival

• Rising investment intentions: RBI estimates planned private capex at about ₹2.67 lakh crore in 2025-26, up from ₹2.20 lakh crore in 2024-25. Infrastructure, led by power, has the largest share [2].
• Mission-mode industrial policy: The National Green Hydrogen Mission has an outlay of ₹19,744 crore and targets 5 MMT a year by 2030. It creates demand through the ₹17,490-crore SIGHT programme [3]. Fifteen firms hold electrolyser manufacturing awards for 3,000 MW a year [4].
• New-age infrastructure: Data centres, semiconductor fabs and automated construction are widening EPC demand beyond roads and buildings [1].
• Crowding-in by public capex: Steady government spending on transmission, railways and ports builds the pipeline that private orders follow.

Risks to the revival

• Execution lag: For projects sanctioned in 2024-25, only about 39% of planned spending fell due in the same year. The rest spills into later years [2]. Signing orders is not the same as building assets.
• Order book is not revenue: If the book grows faster than billing, the book-to-bill ratio rises. That signals a backlog, strain on working capital, and exposure to delays in land, clearances and payments.
• Uncertain demand in new sectors: Electricity makes up 50–70% of the cost of green hydrogen [5]. Cheaper electrolysers alone may not create buyers, so equipment orders depend on industries agreeing to buy the hydrogen.
• External shocks: RBI names geopolitical tension and slowing demand as risks to the outlook [2].
• Measurement limits: RBI's data cover only projects funded by banks or markets, and they show what firms plan to spend, not what they actually spend [2].

EPC order books therefore show both real policy-led momentum and a gap between intent and execution. Several steps can turn orders into assets: faster clearances, timely payments, coordinated planning under PM Gati Shakti, demand-side support for green-hydrogen users, and cheap round-the-clock renewable power. A revival judged by finished projects rather than signed contracts will best serve Viksit Bharat and India's net-zero 2070 goal.