About Us

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ESL is a trusted leader in rotating plant and electrical infrastructure maintenance and repair across New Zealand. With over 40 years of industry experience, we’ve grown from our origins within ABB’s global technology network to become a key member of the Unison Group, working in close collaboration with PBA.

We specialise in the testing, analysis, servicing, and overhaul of both low and high voltage rotating plant equipment—including motors, pumps, and generators. Our capabilities also extend to transformers, switchboards, switchgear, and associated cabling and bus work. This comprehensive service offering allows us to support a wide range of electrical infrastructure needs with precision and reliability.

With fully equipped Service Centres in Hamilton and Christchurch, ESL provides nationwide coverage. Our experienced technicians are available for both workshop-based and on-site projects, ensuring flexibility and responsiveness in every job we undertake.

We proudly support a diverse range of industries, including:

• Power generation
• Electricity transmission and distribution
• Councils
• Water
• Marine
• Mining
• Food processing
• Timber
• General industrial sectors

This broad client base reflects our ability to adapt and deliver solutions across complex and demanding environments.