Ratnakar Singh is an experienced litigation lawyer who is capable of rendering advice on the broad spectrum of legal problems confronting power sector in the contemporary Indian environment. His career has spanned a range of legal areas over two and half decades. In his career, he has rendered advice and defended many top real estate developers in litigation and arbitration and documented various deeds and agreements etc. He has also been rendering advice and defended Hospitality and Entertainment sectors.

Ratnakar Singh has appeared in Bombay High Court on behalf of MERC in Writ Petition challenging MERC(Multi Year Tariff) Regulations 2011, Writ Petitions challenging Maharashtra Electricity Regulatory Commission (Distribution Open Access) Regulations, 2014; Writ Petition challenging MERC(Standard of Performance of Distribution, Licenses, Period for Giving Supply and Determination of Compensations)Regulations, 2014; Writ Petitions challenging Maharashtra Electricity Regulatory Commission(Forecasting, Scheduling and Deviation Settlement for Solar and Wind Generation) Regulations, 2018; Writ Petitions challenging Maharashtra Electricity Regulatory Commission (Distribution Open Access)(First Amendment) Regulations, 2019, Writ Petitions challenging Maharashtra Electricity Regulatory Commission (Forecasting, Scheduling and Deviation Settlement for Solar and Wind Generation)Regulations, 2018, Writ Petitions challenging fixation of tariff of MSEDCL on allegation of transparency by MERC holding suo moto proceedings and many other matters related to power sectors.