Undeterred by issuance of the preliminary termination notice by the Enron-promoted Dabhol Power Company, the Maharashtra State Electricity Board has decided to go ahead with its decision to slap yet another Rs 400-crore penalty on the US energy major. "In June first week, MSEB will slap a penalty of Rs 400 crores on DPC for misdeclaration and default on availability of power, a review for which will be taken next month," MSEB sources said.