Organizational Structure

The Transmission Agency of Northern California (TANC) is governed by a Commission consisting of one representative from each of its Member utilities. The TANC Commission annually elects a Chair and four Vice Chairs, of whom one also serves as Secretary, from among its Commissioners.

TANC’s General Manager is responsible for the day to day management and operation of TANC. This responsibility extends to all TANC’s activities including management and oversight of contracts. The General Manager reports directly to the TANC Commission and receives policy guidance from the Commission.

Officers and Staff

Chair – Nick Zettel
Vice Chair – Martin Caballero
General Manager – John Roukema
Treasurer – Russel Mills
Controller – Lisa Limcaco

TANC/COTP Representatives

COTP Management Committee 
John Roukema

E&O Representative (OCOA)
Richard Buckingham

COTP E&O Committee
Steve Tuggle

Administrative Representative (OCOA)
John Roukema

Reclamation District – 2024 Trustee
Don Wagenet