Charter Amendment (Fourth Draft) to amend the Charter of the City and County by amending Sections 8B.120, 8B.123, and 9.107, and adding Sections 8B.128 through 8B.131, to: (i) address the crisis of global climate change by moving San Francisco from fossil fuels to clean, sustainable energy production, (ii) ensure environmentally sustainable and affordable electric supplies for residents, businesses, and City departments, (iii) require the Public Utilities Commission to determine the most effecti