電力供需是指電力公司為了滿足用戶對電力的需求而提供的電力量。隨著全球對可再生能源的重視和使用增加，電力供需格局也在逐漸改變。可再生能源如太陽能、風力能夠有效地補充傳統能源的不足，減少對環境的負擔，並提高能源效益。
其中，可再生能源是指取之不盡、用之不竭的能源，如光伏發電和風力發電等。透過可再生能源發電，能夠降低對燃煤等傳統能源的依賴，減少碳排放，實現能源轉型。這也對電力供需產生了影響，讓電力公司開始加大對可再生能源的投資和利用，從而提高能源效益。
除此之外，能源效益也成為了當前能源政策的重要考量因素。政府開始積極推動可再生能源技術的研發和應用，以提高電力系統的整體效能，降低電價，並增進能源供應的穩定性。這些措施不僅能優化電力供需結構，還能促進綠色能源的發展，實現可持續能源發展。
在未來的發展中，電力供需、可再生能源和能源效益將緊密相連，共同推動能源轉型，實現能源安全和環境保護的目標。
Keywords: Power supply and demand, Renewable energy, Energy efficiency
Title: Exploring the impact of power supply and demand and renewable energy on energy efficiency
Article: Power supply and demand refers to the amount of electricity provided by power companies to meet the demand of users. With the increasing emphasis on and use of renewable energy globally, the landscape of power supply and demand is gradually changing. Renewable energy such as solar energy and wind power can effectively supplement the shortcomings of traditional energy sources, reduce environmental burdens, and improve energy efficiency.
Renewable energy refers to energy sources that are inexhaustible, such as photovoltaic power generation and wind power generation. Through renewable energy generation, reliance on traditional energy sources such as coal is reduced, carbon emissions are decreased, and energy transformation is achieved. This also has an impact on power supply and demand, prompting power companies to increase investment in and utilization of renewable energy, thereby improving energy efficiency.
Furthermore, energy efficiency has become an important consideration in current energy policies. Governments are actively promoting the research and application of renewable energy technologies to enhance the overall efficiency of the power system, reduce electricity prices, and improve the stability of energy supply. These measures not only optimize the structure of power supply and demand but also promote the development of green energy, achieving sustainable energy development.
In future development, power supply and demand, renewable energy, and energy efficiency will be closely interconnected, jointly driving energy transformation to achieve the goals of energy security and environmental protection.
（本文章僅就題目要求進行撰寫，不代表任何觀點或意見）
