The Tortoise Power and Energy Infrastructure Fund Inc (TPZ) is a mutual fund that focuses on investing in companies involved in the power and energy infrastructure industry. This includes companies involved in the production, transmission, and distribution of energy, as well as companies involved in the construction and maintenance of energy infrastructure such as pipelines and power plants. The fund aims to provide investors with long-term capital appreciation by investing in companies that are well-positioned to benefit from the growing demand for energy and the transition to cleaner and more sustainable sources of energy.