This policy requires generation companies with a capacity over 500 MW to include a certain percentage of renewables. This policy establishes "a system that enforces power producers to supply a certain amount of the total power generation by new and renewable energy. England, Sweden, Canada and Australia introduced the RPS and are running the system. Applicable area in RPS PV, wind power, hydro power, fuel cell, ocean energy, bio energy and other energy prescribed by Korean government" (Kemco). In 2021, the RPS quota (ie. the minimum proportion of power generated from renewable energy sources) was increased to: 12.5% for 2022, 14.5% for 2023, 17% for 2024, 20.5% for 2025 and 25% in 2026 (Hassan, 2024). In 2023, the government changed the RPS quota to 13% for 2023, 15% for 2026, and 25% for 2030 (Hassan, 2024).