Even though there is a large literature on the impacts of electricity, there are few studies on the inter-regional socio-economic impacts of electricity market integration. This study utilises three extended analyses of an Inter-regional Social Accounting Matrix, namely inter-regional Fixed Constrained Price Multiplier, microsimulation, and inter-regional Structural Path Analysis, to estimate impacts. The results indicate that increasing electricity output has positive impacts on an economy, in terms of production activities and factor income. A more integrated electricity market brings substantial inter-regional impacts, such as a reduction of rural poverty. The shock of the more integrated electricity market is transmitted distinctly within and across countries.