Bangladesh Energy Regulatory Commission (BERC) has raised gas tariff. The new tariff will be effective from March, officials said.BERC chairman said the price of household single and double burner will be Tk 750 and Tk 800 from March 1 while Tk 900 and Tk 950 from June 1 respectively.The new tariff will be effective in two phases from March 1 and June 1 respectively.