
JK Cement was the first company to install a captive power plant in 1987 at Bamania, Rajasthan. It is also the first cement company to install a waste heat recovery power plant to take care of the need for green power.
https://en.wikipedia.org/wiki/J._K._Organisation
https://in.investing.com/equities/j.k.-cement-ltd
https://finance.yahoo.com/quote/JKCEMENT.NS/profile?p=JKCEMENT.NS
https://www.comparably.com/companies/jk-cement?open=invite-friend
https://www.crunchbase.com/organization/jk-cements