{"ak":{"bS":"What do solar panels cost in Mercer Island, WA?","bT":"As recorded in August, 2025, the standard cost for solar panel installations in Mercer Island, WA is $3.47/W. After the federal tax credit, the estimated cost for a 5 kW solar panel system in Mercer Island, WA is roughly $12,145.","bU":"q"},"bV":"be"}