CenterPoint Energy owns interests in Enable Midstream Partners, LP. The company's subsidiaries own and operate electric transmission and distribution, electric generation and natural gas distribution facilities, supply natural gas to commercial and industrial customers and electric and natural gas utilities and provide underground pipeline construction and repair services, energy performance contracting and sustainable infrastructure services. The company's segments include: Houston Electric T&D, which consists of electric transmission and distribution services in the Texas Gulf Coast area; and Energy Services, which consists of non-rate regulated natural gas sales and services operations.

CNP Assurances is an insurance company. Co. designs, develops, distributes and manages savings, pension & personal risk, and term creditor products. Co. offers savings products and insurance against the risks of everyday life to its customers. Co.'s operations are organized along three business segments. The Savings business concerns products enabling policyholders to build up capital which they can cash in. The Pensions business concerns products designed to enable policyholders to receive an annuity or lump sum on retirement. The Personal Risk business includes products enabling policyholders to insure against the risks of death, accident or illness, property damage or liability claims.