STL Expands Green Power and Hydrogen Use to Cut Emissions

Mumbai, August 27, 2026: Sterlite Technologies Limited (STL) has announced a series of decarbonisation measures across its manufacturing operations and product portfolio, including the transition of key facilities in India to renewable electricity and the use of green hydrogen in glass manufacturing.

STL said four manufacturing plants in Chhatrapati Sambhaji Nagar (Aurangabad), Maharashtra, have shifted their electricity sourcing to 100% green power generated from wind and solar sources. The transition has been enabled through Maharashtra State Electricity Distribution Company Limited (MSEDCL).

The company expects the move to deliver an approximately 65% reduction in market-based Scope 2 emissions across its optical fibre (OF) and optical fibre cable (OFC) plants covered by the transition.

Green Hydrogen in Glass Manufacturing

STL has also integrated 100% green hydrogen into its glass manufacturing operations. Glass manufacturing is an energy-intensive stage of optical fibre production and has traditionally relied on conventionally produced hydrogen and oxygen.

According to the company, the shift to green hydrogen is aimed at reducing emissions from one of the more energy-intensive stages of its optical fibre manufacturing process.

STL’s decarbonisation efforts also extend to its products through Life Cycle Assessment (LCA). The company has developed a range of eco-labelled certified optical products.

One example is its G.657.A2 optical fibre, which is used in data centre and telecom networks. STL said the carbon footprint of the fibre has been reduced from 4.7 kg CO₂e per fibre kilometre (fkm) to 0.9 kg CO₂e/fkm, representing an approximately 80% reduction.

Changes to Corporate Mobility Policy

STL has also updated its corporate mobility policy to encourage the adoption of lower-emission vehicles. Under its Company Car Policy, the company has introduced incentives and increased limits for employees choosing electric and hybrid vehicles.

The measure is intended to help reduce the company’s Scope 3 operational carbon footprint as part of its wider ESG objectives.

Commenting on the initiatives, Rahul Puri, CEO, ONB, STL, said, “Decarbonization at STL is a set of connected decisions, from the power that runs our plants to the materials that go into every kilometre of fibre we make, to the policies we make for our employees. By combining renewable energy, Green Hydrogen and Eco-labelled-led product innovation, we are making measurable progress towards building a greener and environmentally-friendly manufacturing ecosystem.”

The measures form part of STL’s broader decarbonisation and Net-Zero strategy, covering energy sourcing, manufacturing processes, product-level emissions and employee mobility.