What is the calorific value of CNG and LPG? Post author:jobexamhub Post published:January 14, 2023 Post category:Boiler Questions What is the calorific value of CNG and LPG? WhatsApp Group Join Now Telegram Group Join Now The calorific value of CNG is 45,000kcal/kg while the calorific value of LPG is 46,400kcal/kg. CNG is a cleaner burning fuel than LPG, so it is often used in more environmentally friendly applications.