Washington state has set aggressive carbon emissions limits to stave off the worst effects of climate change. To achieve 2050 economy-wide emissions limits between 2020 to 2050, building sector emissions must decrease by approximately 96% below 2020 levels. To meet that target, the state must decarbonize, maximize efficiency, and increase demand flexibility in more than three million buildings and homes. Operation 2030 offers the interconnected and precise timing of various steps required to implement a building decarbonization strategy from now until 2030.