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TNEI is an independent specialist energy consultancy providing technical, strategic, environmental and consenting advice to organisations operating within the conventional and renewable energy sectors. We have a range of skills tailored specifically to answer the issues associated with increased distributed renewable generation and the integration of low carbon technology. Our consultants have industry leading expertise in grid code compliance studies, noise assessment and modelling of innovative, smart grid technologies. These skills are complemented by a number of other technical services; from GIS and consenting, to energy market analysis, allowing us to confidently guide clients through projects from concept to delivery. TNEI also owns and develops the power systems analysis software, IPSA 3, which contains an extensive range of fully integrated modules enabling all essential studies to be undertaken and can be used to provide bespoke modelling solutions. TNEI operates from three offices in the UK: Manchester, Newcastle and Glasgow, as well as Dublin in Ireland, Cape Town in South Africa, Kochi in India, and Arizona, USA. Our clients range from large utilities, development banks, large and small project developers, industrial organisations and manufacturers, regulators, public sector bodies and community groups. We thrive on excellence, passion and exceeding expectations in all that we do, providing high quality, industry leading services to all our clients worldwide.

Website http://www.tneigroup.com
Revenue $102.9 million
Employees 166 (132 on RocketReach)
Founded 1999
Phone +44 161 233 4800
Industry Services for Renewable Energy, Electricity, Oil & Gas, Other Commercial Services, Power Systems and Technology, Energy, Utilities & Waste Treatment, Environmental Services (B2B), Environmental Management, Strategy, Sustainability, Software Development, Renewable Technologies, Consulting
Keywords Energy Consultancy, Renewable Energy, Energy Consulting, Technical Consulting, Environmental Consulting, Strategic Consulting, Energy Advice, Energy Transition, Sustainability Consulting, Energy Sector, Power Generation, Grid Connection, Environmental Impact, Permitting Services, Regulatory Compliance, Clean Energy, Carbon Reduction, Energy Efficiency, Climate Change
Competitors KPMG, WSP, AECOM, Stantec, Arcadis, Mott MacDonald, Arup, Ramboll, SYSTRA, Buro Happold +40 more (view full list)
SIC SIC Code 87 Companies, SIC Code 871 Companies
NAICS NAICS Code 54133 Companies, NAICS Code 5413 Companies, NAICS Code 541 Companies, NAICS Code 54 Companies

TNEI Questions

The TNEI annual revenue was $102.9 million in 2026.

Mike Powell is the Vice President of Power Systems of TNEI.

132 people are employed at TNEI.

The NAICS codes for TNEI are [54133, 5413, 541, 54].

The SIC codes for TNEI are [87, 871].

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