Mumbai, Sept. 15 -- The Sterlite Group is building a private energy business on a contrarian bet that providing round-the-clock green power and making technological advancements will yield higher margins than backward integration.

Comprising Sterlite Electric, Serentica Renewables and Resonia Limited, the Sterlite Group's private energy business includes manufacturing power conductors and cables, building and operating power transmission lines, and generating and supplying renewable energy from solar and wind power parks.

However, the company plans to stop short of investing in manufacturing solar panels or wind turbines to generate power for it, or battery cells to store it, said Pratik Agarwal, a member of the promoter family member o...