The electricity market in the U.S. is changing rapidly from a utility-scale centralized generation-distribution model to a more distributed and customer-sited energy model. Residential energy consumers in the U.S. have shown increased interest in solar-based electricity at home, resulting in increased adoption of distrib-uted solar on the rooftops of owner-occupied residences (known as rooftop PV). However, increased roof-top PV adoption has led to equity concerns among policymakers, as well as dissatisfaction among utilities due to falling revenues. In this research, a bottom-up simulation-based expansion planning approach through consumer adoption modeling has been proposed to help utilities satisfy consumer demand for dis-tributed solar while also addressing the issues that have arisen from increased rooftop PV adoption.