California Code, Public Resources Code - PRC § 25991.4

(a) The commission, in consultation with the Public Utilities Commission and the Independent System Operator, shall assess the transmission investments and upgrades necessary, including potential subsea transmission options, to support the 2030 and 2045 offshore wind planning goals established pursuant to Section 25991.1.  This assessment shall include all relevant information on the cost of subsea high-voltage transmission and information made available by the Independent System Operator on the cost of network upgrades and the extent to which existing transmission infrastructure and available capacity could support offshore wind energy development.

(b) The findings resulting from activities undertaken pursuant to this section shall be included in the chapter of the strategic plan relating to transmission planning as specified in paragraph (3) of subdivision (c) of Section 25991.