As such, the Transmission Planning Engineer will work closely with other functions, including: management, development, commercial, public relations, environmental, real estate, third-party consultants, and counterparties (suppliers, customers, partners, and lenders’ engineers). Tenaska is one of the largest privately held companies in the United States, an organization that’s adept in natural gas and power marketing, power management, development and acquisition of generation assets, operation of power plants, and more.