UltraTech Passes 2 GW of Green Energy, Meeting 48% of Power Needs

UltraTech Cement has become the first Indian cement maker to pass 2 GW of captive green capacity, reaching 2,024 MW, the company announced on Monday 5 October 2026. That capacity now supplies about 48% of its electricity needs.

Cement is one of the most power- and fuel-intensive heavy industries. A producer sourcing roughly half its electricity from its own renewables and waste heat is changing its exposure to coal, petcoke and grid prices.

Why a 48% green share changes UltraTech’s cost exposure

The headline total splits into 1,580 MW of renewables (solar, wind and hybrids) and 444 MW of waste heat recovery systems (WHRS), which turn heat from clinker production into electricity. The latest additions were 116.55 MW of wind at the Barmer wind-solar hybrid project in Rajasthan, connected through the Inter-State Transmission System (ISTS), and 10 MW of WHRS at Sarlanagar, Karnataka.

Sources differ on the Q1 FY27 share: one summary gives 45.6%, another about 47%. The gap may reflect a difference of basis, such as whether India Cements is included.

The company commissioned 430 MW in FY26, and has funded no new captive thermal power for integrated unit expansion in more than a decade. That is the clearest signal of strategy. Managing Director K C Jhanwar said the shift reduces exposure to fossil fuel supply constraints and power price volatility.

“Structural buffer against fuel cost volatility” How Q1 FY27 earnings-call summaries characterised the green capacity.

Within FY27, nearly one-third of UltraTech’s 76 Indian units have run above 50% green electricity, and five have passed 95%. Financial Express reported on 13 August 2026 that JP Morgan and Morgan Stanley favour UltraTech over Shree Cement, though no margin figures were available.

For you, the point is that UltraTech’s power cost line is becoming less tied to fuel markets, which matters when judging margin resilience through commodity cycles. Per-unit power costs and peer figures are not public, so the size of the benefit remains unquantified.

How hybrid round-the-clock projects and batteries address intermittency

The obvious objection is that solar and wind stop when the weather turns. UltraTech’s answer is visible at its Sewagram Cement Works in Gujarat.

What Sewagram shows

A 7.5 MW on-site hybrid round-the-clock (RTC) project has operated there since 2025. It combines bifacial solar modules with trackers, wind and co-located battery energy storage (BESS), delivering uninterrupted power without relying on the grid. UltraTech describes it as India’s first on-site hybrid RTC renewable project of its kind in the industrial category.

The wider supply mix has three parts:

• ISTS hybrids (such as Barmer): use inter-state transmission to reach strong wind and solar sites.
• On-site hybrid RTC with BESS: smooths output to deliver continuous supply at the plant.
• WHRS: uses clinker-production heat, adds no fossil input and does not depend on weather.

Similar pilots pairing co-located renewables with storage exist in cement and steel plants elsewhere.

Cement shares its dilemma with other hard-to-abate heavy industry sectors such as steel, where co-located renewables and storage pilots have likewise advanced faster than the underlying process chemistry can be changed.

Where the scale-up is unproven

UltraTech says it is progressively adding BESS, but no quantified capacity beyond Sewagram has been disclosed. At 7.5 MW, Sewagram is a small fraction of the 2,024 MW total.

What this means for you is that the reliability design, not just the headline gigawatts, determines how much of the cost benefit survives in practice. Future disclosures on storage scale are the detail to look for.

What the 2030 and 2050 targets leave unresolved

UltraTech aims for 85% green power by 2030 and 100% renewable electricity by 2050 under its RE100 membership, the global corporate renewable electricity initiative.

85% green power by 2030 UltraTech’s stated target, against roughly 48% today.

That is a gap of about 37 percentage points. Management says capacity of 2.5-3 GW is coming “very shortly”. One Sewagram release also cited an interim 65% by 2027, but later coverage mentions only the 2030 figure.

Four caveats, in order of relevance to investors:

1. Capex and returns: reaching 2.5-3 GW implies heavy capital spending, and returns could be pressured if demand, tariffs or carbon pricing shift unexpectedly.
2. Scaling reliability: hybrid RTC and storage designs need significant capital and technical integration.
3. WHRS is efficiency: it is not new renewable generation, yet its 444 MW counts in the total.
4. Process emissions: calcination emissions remain even at 100% renewable power, requiring alternative fuels, clinker substitution and carbon capture.

Comparable figures for Ambuja/Adani, Shree Cement, Dalmia Bharat and JK Cement were not available in accessible sources, so no peer comparison is made here. This tells you the milestone is a strong cost and electricity story but not yet a full decarbonisation story, so weigh it as one lever among several.

What the 2 GW mark settles, and what the next 1 GW will test

The crossing confirms UltraTech’s move away from captive thermal power and a growing cost buffer. The 85% target and the process emissions define what remains.

Three variables will show how the test unfolds: the pace towards 2.5-3 GW, any disclosed BESS scale, and any reported power cost per unit. Track those in upcoming quarterly results.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions. These statements are speculative and subject to change based on market developments and company performance.