Working on behalf of the Swiss canton of Glarus, we drafted an energy plan for the period 2020-2035 with the goal of enabling the canton to achieve carbon neutrality by 2050. Using our analysis of the existing energy concept, current energy-supply systems, and the available sources of renewable energy in the canton, we also drafted an action plan to accompany the new energy plan. The specified actions are to be taken in the areas of spatial planning, building practices, mobility, business operation, energy-supply systems, and communications.