You can start by putting your own house in order. Replace your gas or oil furnace and gas water heater with heat pumps, and replace your gas range with with an electric induction stove.
Renters and homeowners who are customers of Seattle City Light but can’t afford these improvements should look into the city’s HomeWise program.
A separate Seattle fund offers $1,500 rebates for homeowners switching from oil to heat pumps, and the city is developing a program that will help low-income homeowners switch from oil to heat pumps. Many other utilities offer rebates for energy-efficient devices, and the federal Inflation Reduction Act provides income-based rebates and tax credits of up to $2,000 for installation of heat pumps or heat pump water heaters and up to $1,200 for weatherization. See this summary of incentives from Rewiring America.