This study aims to examine the potential and challenges of utilizing Solar Power Plants (PLTS) in Medan City, which is geographically located near the equator and receives high exposure to sunlight throughout the year. The method used is a literature review with a narrative review approach that analyzes secondary data from various journals and relevant scientific articles. The results of the study show that Medan City has an average annual horizontal global solar radiation intensity of 463.61 W/m², with the potential for electrical power that can be generated from rooftop solar panels reaching 748.57 MW (monocrystalline), 598.85 MW (polycrystalline), and 299.43 MW (thin film). This potential is comparable to the capacity of large-scale power plants. The use of PLTS contributes to reducing carbon emissions, increasing energy security, creating jobs, and developing the local economy. However, challenges such as high installation costs, limited suitability of roof structures, and low public awareness are still major obstacles in the implementation of this technology. Therefore, synergy is needed between government policies, public education, and technological innovation to optimize the use of solar energy in urban areas such as Medan.

Diabetes Mellitus (DM) is a disease characterized by increased blood glucose levels and is a disease that needs attention. Diabetes mellitus cannot be cured, but it can be controlled by controlling blood sugar levels to prevent complications from occurring. These complications can be minimized with self-care management . This research aims to find out description self - care management on patient diabetes mellitus in the Kendalsari Community Health Center area, Malang City.This type of research is descriptive with an approach. The research was conducted in the Kendalsari Public Health Center area, Malang City on March 2023 with a sample size of 44 people. How to take samples is non-probability sampling that is purposive sampling. Tool measure that used is questionnaire Summary of Diabetes Self-Care Activities (SDSCA). Data collection is presented in the form of a frequency distribution table. Based on results self-care research patient management almost half of diabetes is in the good category amount 17 people (38.63%), the majority on enough category amount 27 people (61.37). DM patients are expected to improve self-care management behavior to improve health status and prevent further complications.

This study explores human complexity and its impact on macroeconomic development. The main focus is on the buyer's mental variables, such as financial assumptions and courage, and how these elements influence business utilization and behavior. Information from measured studies and investigations shows that positive monetary assumptions will often strengthen financial movements, while vulnerabilities or negative assumptions can hinder monetary developments. The proposed strategy suggestions include clear correspondence to rebuild public confidence and appropriate monetary enhancement arrangements. By understanding these elements, this exploration provides further insight into the collaboration between shopper brain science and macroeconomics, which is important for planning compelling strategic systems in the face of advanced economies.