Seattle City Light's rates are approved by the Mayor and the City Council and are set every two years
as a part of the biennial budget process.
In addition to the base rates Seattle City Light has two automatic rate adjustment mechanisms:
Bonneville Power Administration (BPA) Pass-through allows City Light to pass through
to its customers the financial impact of any increase or decrease in power and
transmission rates charged by BPA. These rate changes take effect without passage
of a new ordinance by the City Council. For more details see BPA Pass-through section.
Rate Stabilization Account (RSA) is a cash reserve of approximately $100 million that
City Light can dip into when wholesale market or hydro changes cause an unexpected
drop in revenue. If the RSA becomes depleted, automatic rate surcharges are added
to your City Light bill to replenish it. For more details see Rate Stabilization