Can any penalty be imposed on the applicant?

There is no provision in the RTI Act for imposition of penalty by the Commission on any applicant. The Delhi High Court in Paardarshita Public Welfare Foundation through Mr. Harkrishan Das Nijhawan vs UOI and oths [WP(C) 6802/2010] imposed costs of Rs. 75,000/- (Rupees Seventy Five Thousand) on the applicant for vexatious filing of appeal.