Tax exemption under section 10(46) for electricity regulatory commission conditioned on non-commerciality and filing requirements. Central Government notifies the Uttar Pradesh Electricity Regulatory Commission under section 10(46) as entitled to exemption in respect of specified income comprising government grants, license fees and fines, and interest earned on those amounts. The exemption is conditional on the Commission not engaging in commercial activity, filing returns per clause (g) of sub-section (4C) of section 139, and maintaining unchanged activities and the nature of the specified income for the relevant financial years.