TNEI
TNEI is an independent, employee-owned UK energy consultancy providing technical, environmental, and consenting advisory across power systems, renewables, BESS, hydrogen, and data centres, with proprietary IPSA software and operations in the UK, Ireland, South Africa, USA, and India.
- Company typePrivate
- Founded1974
- HeadquartersManchester, United Kingdom
- Headcount51–100
- GTM typeB2B
- OfferingServices
What TNEI does
TNEI is an independent specialist energy consultancy headquartered in Manchester, UK, with operations dating to 1974 (the IPSA software origins) and a rebrand as The Northern Energy Initiative in 1999. The firm provides technical, strategic, environmental, and consenting advisory services across the conventional and renewable energy sectors, serving utilities, transmission and distribution operators, renewable developers (onshore wind, offshore wind, solar, BESS, hydrogen), data centre developers, regulators, and development banks. Its core technology is the proprietary IPSA (Interactive Power System Analysis) software platform, developed over 45+ years, which performs load flow, fault level, transient stability, harmonics, and overcurrent protection analyses for electrical network design. Complementary proprietary tools include a sub-synchronous oscillation compliance tool for NESO requirements, the Visualwind environmental noise monitoring platform, and the FES Explorer data analytics tool. TNEI operates from eight offices across the UK (Manchester, Newcastle, Glasgow), Ireland, South Africa (Cape Town, Pretoria), the United States (Chandler, Arizona), and India (Kochi), and is held under a 100% Employee Ownership Trust.
TNEI's revenue model is anchored in professional services (project-based consultancy fees for EIA, planning, grid connection, noise assessment, and technical due diligence) supplemented by IPSA software licensing and training course revenue. The GTM is sales-led and project-based, with multi-year contracts and direct engagement with enterprise clients across the energy value chain. Notable engagements include the £10.3 million Distributed Restart programme with National Grid ESO and SP Energy Networks, Section 36 consenting for Zenobe's BESS projects, planning support for Wilson Renewables' Hawkwood Wind Farm, and advisory work for over 60 major data centre developments globally. Customer segments are diversified across utilities and network operators, renewable developers, industrial facilities, regulators, and data centre operators, with pricing on a quote-based, project-specific basis. The firm has run a multi-year diversification strategy into hydrogen (since 2007), BESS, offshore wind, and data centres, and has expanded its geographic footprint to capture energy transition advisory work across five continents.
TNEI firmographics
Firmographics- Name
- TNEI
- Legal name
- TNEI Services Ltd
- Website
- https://tneigroup.com
- Company type
- Private
- Founded year
- 1974
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- TNEI is an independent, employee-owned UK energy consultancy providing technical, environmental, and consenting advisory across power systems, renewables, BESS, hydrogen, and data centres, with proprietary IPSA software and operations in the UK, Ireland, South Africa, USA, and India.
- Ownership category
- akta.pro rank
Where TNEI is headquartered
LocationHeadquarters
- HQ city
- Manchester
- HQ country
- United Kingdom
- HQ region
- Europe
Offices8 records
Markets served
TNEI business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Technology or R&D, Operations, Marketing or Sales
Revenue model
- Consultancy Services: TNEI generates revenue through consultancy fees for technical, strategic, environmental and consenting advice. Services are delivered from project conception to completion across the energy sector.
- IPSA Software Licensing: IPSA software licensing and support services to power systems industry professionals worldwide, including training, onboarding and ongoing program management
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Project-based consultancy pricing |
| Other | Pay-as-you-go | Training course pricing |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels7 records
TNEI product offering
Product offeringCore offering
TNEI is an independent specialist energy consultancy that delivers technical, strategic, environmental and consenting advisory services across the conventional and renewable energy sectors. Its offering spans power systems design, grid connection studies, feasibility studies, EIA, acoustics and noise monitoring, GIS/mapping, planning and consenting, due diligence and training. The company also develops and licenses IPSA, a proprietary power system analysis software package developed over 45+ years, and delivers data science solutions such as the FES Explorer tool.
Product overview
TNEI is an independent specialist energy consultancy offering technical, strategic, environmental and consenting advice to the conventional and renewable energy sectors. The core product offering centres on IPSA Software, a proprietary power systems analysis platform developed over 40+ years, complemented by specialist consultancy services spanning power systems design, grid connection, feasibility studies, environmental impact assessments, acoustics and noise monitoring, innovation and data science, due diligence, planning and consenting, and training courses. TNEI operates globally through offices in the UK (Manchester, Newcastle, Glasgow), Ireland, Africa (Cape Town, Pretoria), USA, and India (Kochi). The company serves clients including electricity utilities, renewable developers, regulators, industrial organisations, and funding institutions.
Differentiator
Problem solved
Functional benefit
Brands
- IPSA Software: Interactive Power System Analysis software - a modern and comprehensive power system analysis package for the design, planning and analysis of electrical networks.
- Visualwind
Products and services
- IPSA Software Interactive Power System Analysis (IPSA) is a comprehensive power system analysis software package for the design, planning and analysis of electrical networks. It is used by power systems industry professionals worldwide for load flow, fault level, harmonics, transient stability, and overcurrent protection grading studies.
- TNEI Training Courses
Quantifiable outcome
- Noise assessments for more than 5 GW of onshore wind developments
- +3 more outcomes
Companies that use TNEI
Customer profileNamed customers8 records
Segments8 records
Ideal customer profiles3 records
TNEI technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability3 records
Feature5 records
TNEI partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered core and minor.
- National Grid Electricity System Operator (ESO)corePartnership in the Distributed Restart project, awarded £10.3 million. TNEI collaborated with National Grid ESO and SP Energy Networks on this initiative to restore electricity supply using distributed energy resources.
- SP Energy Networks (SPEN)corePartnership in the Distributed Restart project alongside National Grid ESO, working on system restoration using distributed energy resources.
- Wilson Renewables IV LLPcoreTNEI supported Wilson Renewables in securing planning permission for Hawkwood Wind Farm. TNEI acted as consultant Project Manager, EIA Co-ordinator and Planning Lead.
- OnPath EnergyminorTNEI continues partnership supporting Hawkwood and Bankend Rig wind farm projects as OnPath Energy progresses renewable energy investment plans.
- ZenobecoreTNEI submitted Section 36 applications on behalf of Zenobe for BESS projects (200MW South Lanarkshire, 100MW North Ayrshire).
- Statkraft UK LtdcoreTNEI acted as Planning Agent for Statkraft UK Ltd for Coylton Greener Grid Park planning application to East Ayrshire Council.
Scale indicators8 records
Recent moves10 records
Expansion highlights6 records
TNEI competitors and assessment
Company assessmentDirect peers
- Natural Power Consultants: Independent renewable energy and energy storage consultancy providing environmental, engineering and technical advisory services to developers and utilities. Highly comparable to TNEI's onshore/offshore renewables, BESS and consenting practice.
- SgurrEnergy: Renewable energy consultancy offering owner's engineer, technical due diligence and energy yield services. Comparable boutique scale and renewables focus with similar developer/utility client base.
- Baringa Partners: Specialist energy and resources consultancy advising utilities, regulators and developers on strategy, operations and markets. Comparable as a specialist energy-only consultancy serving similar enterprise clients, though operating at a larger scale.
Broad incumbents
- DNV (Energy Systems): Global assurance and energy advisory firm providing grid, renewables and energy transition consulting alongside standards and certification. Overlaps with TNEI on grid code, ITE reports and offshore wind advisory, but at far greater scale.
- AFRY (formerly Pöyry): International engineering and consulting firm with deep energy, transmission and renewables practices. Competes with TNEI for technical advisory and grid studies work but offers broader EPC and engineering scope.
- Ricardo plc: Engineering and strategic consulting firm with an energy and environment practice covering power systems, rail and renewables. Comparable in offering power systems and environmental consulting to utilities and developers.
- KBR (Government Solutions – Energy): Global engineering and advisory firm with energy transition, grid modernisation and renewables capabilities. Competes for large transmission and energy transition consulting mandates alongside TNEI.
Emerging players
- Carbon Trust: Independent climate and energy consultancy advising corporates, governments and developers on decarbonisation strategy. Adjacent to TNEI's environmental and consenting services, with stronger focus on corporate sustainability advisory.
- Green Giraffe: Boutique renewable energy financial and technical advisor specialising in wind, solar and storage project finance advisory. Comparable niche scale and overlap with TNEI's ITE and due diligence offerings.
Others
- CESI (Centro Elettrotecnico Sperimentale Italiano): Independent power systems testing, consultancy and software organisation, including proprietary grid simulation tools. Comparable as a specialist power-system technology and consultancy peer, particularly relevant to IPSA's tool positioning.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
TNEI social profiles
Digital presenceTNEI financial estimates
Financial estimateRevenue estimate
Valuation estimate
TNEI leadership team
Management profileNumber of profiles
Profiles13 records
TNEI subsidiaries and ownership
Company hierarchySubsidiaries3 records
TNEI funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
TNEI M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about TNEI
What does TNEI do?
TNEI is an independent specialist energy consultancy that delivers technical, strategic, environmental and consenting advisory services across the conventional and renewable energy sectors. Its offering spans power systems design, grid connection studies, feasibility studies, EIA, acoustics and noise monitoring, GIS/mapping, planning and consenting, due diligence and training. The company also develops and licenses IPSA, a proprietary power system analysis software package developed over 45+ years, and delivers data science solutions such as the FES Explorer tool.
Is TNEI a public or private company?
TNEI is a private company. It is classified as management employee owned and is currently operating.
When was TNEI founded?
TNEI was founded in 1974. It employs 51 to 100 people.
Where is TNEI based?
TNEI is headquartered in Manchester, United Kingdom, in the Europe region.
How does TNEI make money?
Two revenue lines are on record. Consultancy Services are the primary driver. The others are IPSA Software Licensing.
Who are TNEI's main competitors?
Direct peers on record are Natural Power Consultants, SgurrEnergy and Baringa Partners. Broad incumbents are DNV (Energy Systems), AFRY (formerly Pöyry), Ricardo plc and KBR (Government Solutions – Energy). Emerging players are Carbon Trust and Green Giraffe. CESI (Centro Elettrotecnico Sperimentale Italiano) is listed as an others.
Does TNEI have an API?
No public API is recorded for TNEI.