ESG文献点评：动态投资风险比较：清洁能源与污染能源

Core Viewpoints - The global focus on climate change and sustainability has made energy transition a critical issue, with clean energy like wind and solar power emerging as key pathways for reducing greenhouse gas emissions and promoting low-carbon economies [1][7] - Despite environmental advantages, investors remain concerned about the volatility and risk levels of clean energy investments compared to traditional fossil fuels like oil and gas, which are seen as "safe" assets during economic uncertainty [1][7] - The study uses ADCC-GARCH model to analyze the dynamic risk of clean and dirty energy portfolios, covering data from 2010 to 2021, including major economic events like EU ETS, COVID-19, and Brexit [1][7][12] Literature Review - The study aims to assess whether investing in clean energy significantly increases risk or if it can provide stable returns, especially during market turbulence [8] - It focuses on the volatility and correlation changes between clean and dirty energy assets, particularly during major economic events, to evaluate clean energy's role in risk management and portfolio optimization [8] - The research highlights the economic value of clean energy, not just its environmental benefits, and aims to provide data-driven insights for policymakers and investors to accelerate energy transition [8] Data Sources - The study uses daily closing price data from January 19, 2010, to September 17, 2021, covering both clean and dirty energy assets [9] - Dirty energy portfolio includes oil and gas futures prices and the EURO STOXX Oil & Gas Index, while the clean energy portfolio consists of the S&P Global Clean Energy Index and European Emission Allowance (EUA) prices [11] - A mixed energy portfolio is also analyzed, representing a balanced investment approach between clean and dirty energy assets [11] Research Model - The ADCC-GARCH model is employed to dynamically analyze the risk and correlation between clean and dirty energy portfolios, allowing for real-time risk assessment and portfolio adjustment [12] - The model helps investors evaluate the risk performance of clean energy during market uncertainty and determine if it can serve as an effective risk-hedging asset [12] Research Findings - Since 2020, clean energy investments have shown lower risk levels, especially during economic crises, outperforming dirty energy in terms of risk control [13][16] - During the COVID-19 pandemic, clean energy portfolios exhibited significantly lower risk compared to dirty energy, with optimal portfolios favoring long positions in clean energy [16] - Although dirty energy performed better in the short term during earlier economic crises, clean energy has become a preferred choice for investors seeking stable returns and risk diversification since 2020 [16] Conclusion - Clean energy is increasingly favored by investors for its ability to reduce portfolio risk while offering strong long-term return potential, especially in volatile markets [17] - The study demonstrates that clean energy not only aligns with global sustainability goals but also provides competitive financial returns, making it a key choice for future-oriented investment strategies [17]