IRM Energy, a city gas distributor located in Gujarat, has commenced its initial public offering (IPO) subscription today, October 18, with a closing date on October 20. The company is seeking to raise Rs 545.4 crore solely through a fresh issue of 1.08 crore shares, without any offer-for-sale, as per details presented in their red herring prospectus submitted to the Securities and Exchange Board of India (SEBI).