Management Team


Tim Duignan 

BBUS, MARKETING, ASS DIP (ELEC ENG), AFIE, AUST, CENGA, ENGEXEC

Chief Executive Officer 

Tim brings a wealth of knowledge to the role with more than 30 years’ experience in the electricity generation, retail, transmission and distribution sectors of the energy industry. He commended his career as an apprentice electrical fitter mechanic in the distribution sector, and has held senior executive management roles in both privately and publicly owned enterprises across all sectors of the electricity industry in Australia and Southeast Asia. Tim has also previously held various Board positions in both domestic and international businesses.

Grant Chorvat

BE (HONS), FIE AUST, CPENG, GAICD, MAIPM

General Manager Assets and Operations

Grant is an electrical engineer with extensive experience in process automation, technology and maintenance management. Grant has more than 20 years in leadership and management roles in a range of industries. Prior to joining Territory Generation, Grant managed the Tamar Valley Power Station and Bass Strait Islands facilities for Hydro Tasmania.

Maria Walters

BBUSCOM, CPA, GAICD

General Manager Finance and Corporate Services

Maria is a Certified Practising Accountant with significant experience gained across her career in the power generation industry. Maria holds a Bachelor of Business and Commerce, was awarded a Dean’s Honour and is and experienced Board Director. She brings strong technical accounting and analytical skills as well as the accounting processes resulting from the separation from Power and Water.

Steve Bartlett

BCOM, CA, MBA, GAICD

General Manager Commercial 

Steve has extensive commercial experience in heavy industry, covering business analysis and modelling, strategic contracts negotiation and development, and business process improvement. Steve is a Chartered Accountant with more than 24 years across public practice, the resources industry and the power generation industry.

Rebecca Mills

BE (HONS), BEC, MIE AUST

General Manager Major Projects 

Rebecca holds Bachelor Degrees in Mechanical Engineering and Economics. Rebecca has gained extensive experience in major project development and delivery, business analytics, strategy, commercial contracts and the development of the wholesale energy market throughout her career from various roles in Power and Water Corporation and Territory Generation.