(a) Sworn statement.--In order to allow the commission to carry out the commission's duties under this chapter, the chairperson, vice chairperson or executive director of an authority shall file, within 30 days of the effective date of this section and on or before March 31 of each year thereafter, a sworn statement which specifies the authority's gross intrastate revenues for the immediately preceding calendar year in the same manner as required under section 510(b) (relating to assessment for regulatory expenses upon public utilities).
(b) Billing.--The commission shall make an estimate based on the gross intrastate revenues specified under subsection (a) in accordance with the procedures set forth in section 510(b) and shall impose an assessment on an authority based on the authority's proportional share of the commission's expenses relating to the commission's utility group in accordance with section 510(b). An authority shall pay an assessment on an annual basis in accordance with section 510.