Reliance Industries Ltd will invest Rs 75,000 crore in rolling out 5G mobile telephony services, expanding retail network and setting up renewable energy capacity in Uttar Pradesh in the next four years, its chairman Mukesh Ambani said on Friday. Ambani also announced foray of the oil-to-telecom conglomerate into bio-energy business, converting agriculture waste into gas which can be used as fuel in industries, run automobiles or light kitchen stoves. Speaking at the Uttar Pradesh Global Investors Summit 2023 here, Ambani said his group will set up 10 GigaWatts of renewable energy capacity and roll out 5G services across the state in the next 10 months.