Leadership Team

Mike Costelloe

Mike Costelloe

Chief Executive Officer

Mike joined Delta in June 2017. He has wide experience in the highly competitive contracting sector, predominantly in civil infrastructure. Mike has previously held a number of senior management roles, in both New Zealand and Australia. Since January 2015, Mike has been General Manager, Strategic Accounts Downer New Zealand. Prior to that, he was General Manager Otago/Southland Downer New Zealand.

 

Richard King

Richard King

General Manager Environmental Services

Richard (BAppMgt, Nat. Cert. Sports Turf Mgt) joined Delta in 2001 and was appointed General Manager Environmental Services in 2015. He is responsible for Delta’s delivery of environmental services, including parks and reserves, and tree services management, for local government and private sector customers. Richard has 30 years’ experience in environmental services primarily in the amenity horticulture and turf industry. He leads a highly skilled team of up to 200 people at peak, across nine locations throughout the South Island.

 

Michael Price

Michael Price

General Manager Power and Communication Services

Michael (MBA, NZCE Electrical, REA) joined Delta in March 2017. He is responsible for delivery of contracting services to our electricity network customers including the maintenance and capital works projects on the Aurora Energy electricity distribution network in Dunedin and Central Otago. Michael has had wide operations experience in the electricity distribution sector. He has held senior management roles at PowerNet, United Networks, NZ Post and most recently the Earthquake Commission (EQC).

Lynne Bas

Lynne Bas

Retailer Services Manager

Lynne (BCom) joined Delta in September 2004 and was appointed Retailer Services Manager in 2010. Lynne is responsible for the delivery of our metering and field services operations at Delta. Her business unit spans across all New Zealand networks and provides services to a wide range of electricity retailers and meter owners. Having moved throughout the retailer services team, Lynne has a wealth of knowledge in this area and has developed long standing relationships with her customers.

John Llewellyn

John Llewellyn

Human Resource Manager

John (BAppMgt, CMHRINZ, Assoc CIPD) joined Delta in April 2012. He is responsible for leading our HR program, which includes employee relations, communications and training. John has over 20 years’ experience in human resource management and has held senior roles at the Otago Polytechnic and Uni-services, part of the University of Auckland. John is a chartered member of the HR Institute of New Zealand.  

 

Matt Sadgrove

Matt Sadgrove

Health and Safety Manager

Matt (DipOHS, Grad NZISM) joined Delta in July 2014. He is responsible for the health and safety operation of our business. Matt has a wide range of experience and has been a health and safety specialist for the past 7 years. Previously Matt held production and safety roles at Silver Fern Farms, as well as a variety of roles outside the industry. Matt is an active member of the New Zealand Institute of Safety Management, the Electricity Distribution Institute Safety forum and a committee member of the Dunedin H&S forum.

Hayden Wingfield

Hayden Wingfield

Financial Controller

Hayden (BCom, Dip Grad, CA) joined Delta in February 2014. He is responsible for the financial accounting and financial risk operations of our business. A Chartered Accountant, Hayden has a wide range of experience in the commercial and financial sectors. He began his career at Deloitte in the Audit and Risk team and was a Senior Manager at Heathrow Airport prior to joining Delta.

 

Daryl Putt

Daryl Putt

Business Accountant

Daryl (BCom, Dip Grad, CA) joined Delta’s predecessor Dunedin Electricity Ltd in July 1997. He is responsible for ensuring accurate and robust management accounting practises as well as effective and efficient business processes. Daryl has held a number of roles within the finance group at Delta, gaining a wide range of experience within the contracting and energy sectors, which began over 25 years ago at Taranaki Energy Ltd. He undertook his tertiary education part time, while also working full time at Delta and gained his Chartered Accountant qualification in 2007.

Glenda McGowan

Glenda McGowan

Executive Assistant

Glenda joined Delta in November 2004 as a personal assistant to the CEO and executive team, and has continued to provide management support to subsequent CEO’s and leadership groups. Glenda is responsible for executive, administrative and management support to the CEO and Board of Directors. She has previously worked in a variety of administrative and management support roles for organisations within the education and legal sectors.

Shane Spicer

Shane Spicer

Commercial Manager

Shane (NZCQS, PMP, NZC Const. Man. L5) joined Delta in December 2012 as the Technical Services Manager. In 2016 Shane moved into the Commercial Manager role with responsibilities in the risk and quality assurance portfolios, as well as leading the newly created Major Project Group. Shane started in the high voltage Transmission and Generation industry. He has held a number of senior roles, including Regional Manager for the then, Transfield Services, and Senior Projects Manager for a large multinational company, where he was responsible for tendering and managing major infrastructure renewals and upgrades across New Zealand.