The transition toward a low-emission economy and the implementation of sustainable development goals require the active involvement of rural areas. Renewable energy sources are fundamental to strengthening energy security and addressing the challenges of climate change. In Poland, the “Energy for the Countryside” program serves as a key public policy instrument promoting renewable energy sources deployment in rural areas. This study examines the “Energy for the Countryside” programme as a public policy tool facilitating the expansion of renewable energy technologies in rural Poland. The program offers subsidies and preferential loans for the construction of photovoltaic, wind, biomass, and biogas plants, including energy storage systems. It is addressed primarily to farmers and energy cooperatives. Quantitative data from the “National Fund for Environmental Protection and Water Management” are used to assess the scale of support and types of projects financed in the first calls for applications. In conclusion, the article highlights that the pursuit of greater energy independence, along with increasing environmental and economic awareness among residents, contributes to a higher share of green energy in the energy mix. Consequently, it underscores the need for further development of policies supporting sustainable energy, especially in rural areas.