Green investing has been a socially responsible investment strategy to give institutional investors and their beneficiaries some comfort knowing they were supporting the environment. As environmental concerns impact large multinational companies, policymakers, and individuals worldwide, institutional investors have begun to recognize green investing as a financially attractive sector. The green opportunity set is broad; it includes renewable energy, energy storage, energy efficiency, environmental services, and environmental resources. While growth drivers support exposure to the green sector, there are many inherent risks to green investing, including market, execution, technology, financing, commodity pricing, and regulatory changes. This report should serve as a primer on green investment merits and considerations. We conclude that investors should consider some of the more compelling green investment strategies, but avoid strategies that do not offer an attractive risk-adjusted return.