Our Team
Meet the dedicated team behind GRE Services. Proudly locally owned and operated, with over 34 years of experience in the Nelson Tasman region, our skilled professionals deliver safe, reliable, and forward-thinking solutions across electrical, solar energy, heat pumps, automation, and specialist dental & medical equipment servicing. Every project is powered by expertise, integrity, and a genuine commitment to our community.
Josh Roberts
Company Director
Josh is the Company Director and owner of GRE Services, bringing over 33 years of experience as a fully qualified electrician across both New Zealand and the UK. With a strong background in the commercial and residential sectors, Josh plays a leading role in the day-to-day management of the business and oversees the delivery of large-scale electrical projects. Throughout his career, Josh has built extensive experience across all aspects of the industry, from hands-on electrical work through to high-level project management and leadership. He works closely with clients, contractors, and the GRE Services team to ensure projects are delivered efficiently, professionally, and to the highest standard. Josh’s practical expertise, leadership, and commitment to quality have been instrumental in the growth and success of GRE Services, helping shape the company’s strong reputation for reliability, innovation, and exceptional service.
Contact Details:
03 546 9930 xt.7
josh@greservices.nz
Nicola Strom
Company Director
Nic is the Finance Manager and Company Director alongside Josh, Colin and Rebecca. In her pivotal role, she oversees financial reporting, accounting, payroll, and a wide range of administrative functions that support the day-to-day operations of the business. She plays an integral role in shaping internal systems and processes, ensuring the business operates efficiently, professionally, and in line with industry best practices. With a strong focus on organisation, accountability, and continuous improvement, Nic’s leadership provides a solid foundation for the company’s success. Her strategic insight, attention to detail, and commitment to excellence are vital to the ongoing success and sustainable growth of GRE Services.
Contact Details:
03 546 9930 xt.4
nic@greservices.nz
Colin White
Company Director
Colin is an experienced electrician, Operations Manager, and Company Director alongside Josh, Nic, and Rebecca, bringing over 23 years of industry experience and strong leadership skills to the GRE Services team. In his role as Operations Manager, Colin works closely with our electrical team, customers, and suppliers to ensure projects and services are delivered efficiently, professionally, and to the highest standard. Alongside overseeing daily operations, Colin also leads our Solar PV division, Solar Smart Energy, where he specialises in designing customised solar solutions tailored to each client’s needs. From initial consultation through to installation, he oversees every stage of the process to ensure a seamless experience and exceptional results. Colin’s technical expertise, practical approach, and commitment to customer service make him a valued leader within the business and a trusted advisor to our clients.
Contact Details:
03 546 9930 xt.2
colin@greservices.nz
Rebecca McLean
Company Director
Rebecca is the Service Team Manager and Company Director, bringing over 18 years of experience and dedication to our team. She works closely with Colin, our Operations Manager, to ensure the smooth and efficient management of our busy Service Team. Rebecca’s role is pivotal in coordinating and overseeing all service operations, ensuring that every job is attended to promptly and professionally. As the first point of contact for our customers, she provides friendly and efficient service, making her an invaluable asset to our team. Her commitment to customer satisfaction, combined with her leadership and ownership role within the business, ensures a strong focus on quality, accountability, and continuous improvement. Rebecca’s ability to effectively manage team dynamics ensures a seamless and positive experience for all our clients, and her dedication to excellence plays a crucial role in upholding the high standards of our service operations.
Contact Details:
03 546 9930 xt.3
rebecca@greservices.nz
Gareth Hammon
QS and Project Manager
Gareth is an experienced Estimator with over 33 years in the electrical industry, bringing extensive knowledge across the commercial, light industrial, and residential sectors. Having worked throughout the South Island before settling in the Nelson/Tasman region with his family, Gareth brings a wealth of practical experience and industry insight to the GRE Services team. Known for his approachable manner and strong communication skills, Gareth works closely with clients to provide accurate, competitive pricing across all areas of the electrical industry while ensuring every project reflects the high standards GRE Services is known for. He also plays an important supporting role within daily operations, assisting the Operations Manager and contributing to the smooth and efficient running of the business. Gareth’s experience, professionalism, and commitment to quality make him a valued member of the GRE Services team and a trusted point of contact for our clients.
Contact Details:
03 546 9930 xt.6
gareth@greservices.nz
Andrea Friend
Administrative Coordinator
Andrea Friend is the administrative superstar at GRE Services, playing a key role in keeping our operations running smoothly across multiple areas of the business. As one of the first points of contact for GRE Services, Andrea is known for her warm, professional manner and willingness to assist wherever needed. Andrea provides full administrative support to the Service team, including the Dental/Medical, Heat Pump and IQP BWOF divisions. This includes booking jobs, coordinating schedules, overseeing inventory, and liaising with suppliers. Her versatile skill set and commitment to excellence make her an invaluable part of the GRE Services team.
Contact Details:
03 546 9930 xt.1
andrea@greservices.nz
Maryam Zadeh
Health & Safety/Media & Marketing
Maryam handles all Health and Safety Matters at GRE Services. In this role, she ensures a safe and compliant work environment across all company operations, overseeing health and safety protocols, conducting regular risk assessments, and ensuring compliance with industry regulations. Additionally, Maryam handles the company’s media and digital marketing needs, managing online presence, developing digital strategies, and coordinating media outreach. Her expertise contributes to maintaining the company’s safety standards and enhancing its digital footprint.
Contact Details:
03 546 9930 xt.9
maryam@greservices.nz

Electricians and Apprentices
Our team is made up of fully qualified NZ Registered Electricians, with extensive experience both in New Zealand and internationally, including the UK and Europe. Together, they have successfully delivered a wide range of projects across residential, commercial, and specialist sectors. Within the team, we’re proud to have experts such as Electrical Inspectors, IQP Qualified Electricians, and Dental Service Technicians, giving us the ability to provide a truly comprehensive suite of services to our clients
Supporting the next generation of talent is also a key part of who we are. We currently have four Apprentices at different stages of their training, all working towards their electrical qualifications under the guidance of our senior electricians. We actively encourage our apprentices to take part in the Master Electricians’ New Zealand Apprentice Challenges, and their success speaks for itself:
- 2024 Master Electricians NZ Tasman Apprentice Challenge – Daniel Welwood
- 2023 Master Electricians NZ Tasman Apprentice Challenge – Alisha Lewis (Winner Domestic Commercial) Taylor Berkett (Winner Initiative Award)
- 2019 Master Electricians NZ Tasman Apprentice Challenge – Kristoff Ford (2nd Place Winner)
- 2018 Master Electricians NZ Apprentice of the Year Challenge – Thomas Goode (Finalist)
We’re proud of our team’s achievements, from the experience of our qualified electricians to the energy and dedication of our apprentices, all of whom play a vital role in powering GRE Services forward.



















