Land law politics in Indonesia plays a crucial role in realizing social justice and sustainable development through fair and sustainable management of agrarian resources. The primary legal foundation governing land matters is Law No. 5 of 1960 on Basic Agrarian Principles (UU Pokok Agraria), which asserts that all land, water, and air spaces are controlled by the state and utilized to the greatest extent for the welfare of the people. However, the implementation of land law politics faces significant challenges, including disparities in land distribution, agrarian conflicts, and misalignment between central and regional policies. Policy changes, such as the introduction of Land Management Rights and Land Banks through the Omnibus Law, add complexity and raise questions about their alignment with UU Pokok Agraria's fundamental principles. Resolving land disputes also becomes a critical issue, necessitating effective and inclusive legal mechanisms. Therefore, comprehensive reform in land law politics is required, encompassing regulatory harmonization, consistent law enforcement, and active public participation, to ensure fair and sustainable land management for the welfare of the people.

In today’s era, the use of renewable energy is increasingly becoming a major focus in energy increasingly becoming carbon emissions. One of the applications of renewable energy in industrial life is the use of solar panels for street lighting systems, especially on toll road lights that  require continuous and efficient lighting. This study aims to analyze the basic theory of how solar panels work an their application to toll road lights, taking into account energy efficiency, power deviation, and stability of electricity supply. The analysis method is carried out through literature studies and mathematical calculation in the application of solar panels to toll road lights. The result of the analysis show that the solar panle system is able to meet the energy needs of toll road lights, especially in areas with high sunlight intensity. In addition, the use if lithium batteries as energy storage has proven effective in maintaining the stability of electricity supply at night or in cloudy weather