Middleton Group

What Middleton Group does

Middleton Group is an employee-owned specialist engineering consultancy headquartered in Melbourne that delivers integrated power and energy engineering services across Australasia. Founded in 2016 by Keith Middleton, the firm has grown to 90+ engineers and project managers operating from Melbourne (Naarm), Sydney (Gadigal) and Brisbane (Meanjin), with active project engagement in Aotearoa New Zealand. The company serves utilities, rail and transport authorities, renewable energy developers, water utilities, industrial operators, and government agencies, with recent marquee clients including AusNet, ElectraNet, KiwiRail, Metro Trains Melbourne, Sydney Trains, Edify Energy, Acciona, RayGen, Progress Power, GSK, Gippsland Water and Sydney Water.

Its service portfolio is organised around eight core markets — Grid Connection Services, Renewables & BESS, Data Centres & Advisory, Transport, Water, Transmission & Distribution, Industrial & Defence, and Civil & Structural Design — supplemented by specialist offerings in Arc Flash Hazard Analysis, Earthing Systems, Embedded Generation Studies, Construction Engineering, Project Management, and a pro-bono Sustainable Energy Future programme. Underlying technical work uses industry simulation tools (MATLAB Simulink, PSCAD, PSSE, HOMER, BIM/CAD) to deliver grid connection studies, traction power modelling, EMC assessments, earthing design and HV infrastructure engineering; no proprietary AI/ML platform is disclosed. Notable delivered projects include the 333MW Darlington Point Solar Farm (synchronous condensers), the 100MW/200MWh Capital Battery in the ACT, the 115MW/230MWh Springvale Energy Hub BESS, the Mallacoota community microgrid and the Cultana Pumped Hydro MEICA work.

Middleton Group operates a project-based professional services revenue model with fees scoped per engagement and obtained through competitive tendering, direct enterprise engagement, and referrals. The go-to-market is exclusively direct enterprise field sales targeting large utilities, transport authorities, government and infrastructure developers across Australasia. On 1 September 2025 the firm announced it would join Fyfe, an integrated Australian engineering, environment, planning and survey firm with 650 staff, materially scaling its platform beyond its pure-play power systems niche.

Name

Middleton Group

Legal name

Middleton Group Engineering Pty Ltd

Website

https://middletongroup.com.au

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

51–100 employees

Short description

Middleton Group is an employee-owned engineering consultancy delivering specialist power, renewables, transport, water and industrial electrical engineering services to utilities, government, and renewable developers across Australasia, operating from Melbourne, Sydney and Brisbane.

Ownership category

akta.pro rank

Product category

Power Systems Engineering Consultancy

NAICS

Electric Power Transmission, Control, and Distribution (22112), Electric Power Generation, Transmission and Distribution (2211)

SIC

Electric Services (4911), Electric, Gas & Sanitary Services (4900)

akta.pro primary industry

Energy Storage & Microgrid Electrical Infrastructure (BESS, Controls) (IMAFAHAE)

akta.pro secondary industries

BESS EPC, Integration & Commissioning (EUAFAAAB), Distribution System Engineering & Design (Mains/Services/Stations) (EUAJAEAB)

Keywords

• Power systems engineering
• Grid connection services
• Renewable energy consulting
• Rail electrification engineering
• Electrical engineering consultancy

Headquarters

HQ city

Melbourne

HQ country

Australia

HQ region

Oceania

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Engineering Consultancy Services: Middleton Group generates revenue through providing specialist engineering consultancy services on a project-by-project basis. Services span grid connection studies, renewable energy design, earthing systems, arc flash hazard analysis, protection studies, traction power modelling, electromagnetic compatibility assessments, and construction engineering. Revenue is project-based and typically obtained through competitive tendering and direct client engagement with utilities, infrastructure developers, and industrial clients.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels9 records

Core offering

Middleton Group is an employee-owned engineering consultancy that delivers integrated power and energy engineering services across Australasia. The firm provides grid connection studies, renewable energy and battery energy storage system (BESS) design, traction power modelling, earthing systems, arc flash hazard analysis, electromagnetic compatibility assessments, transmission and distribution engineering, water and wastewater electrical infrastructure design, and industrial and defence electrical engineering on a project-by-project basis to enterprise and government clients.

Product overview

Middleton Group is an employee-owned engineering consultancy that provides integrated power and energy engineering services across Australasia. The company operates as a unified service firm rather than a platform-plus-modules architecture, offering specialist engineering expertise organized into eight core service areas: Grid Connection Services, Renewables & BESS, Data Centres & Advisory, Transport, Water, Transmission & Distribution, Industrial & Defence, and Civil & Structural Design. These core services are supplemented by specialist offerings including Arc Flash Hazard Analysis, Earthing Systems, Embedded Generation Studies, Transformer Fall Restraint, Construction Engineering, Project Management, and Sustainable Energy Future community engagement. The firm also provides Digital Design services using BIM/CAD technology. Projects typically combine multiple service offerings to deliver comprehensive solutions for clients in power utilities, renewables, transport, water, and industrial sectors.

Differentiator

Problem solved

Functional benefit

Products and services

• Grid Connection Services Expert services for connecting power generation facilities, including wind farms, solar farms, and battery storage systems, to the electricity grid through transmission or distribution networks, delivered to renewable developers, utilities and major load customers.
• Renewables & Battery Energy Storage Systems (BESS) Engineering services for renewable energy projects including solar farms, wind farms, and battery energy storage systems, covering detailed design, construction support and commissioning for renewable developers and operators.
• Data Centres & Advisory Power infrastructure advisory services for data centre facilities, including electrical design, reliability assessments, power quality optimisation, EMC risk assessments and grid connection studies for hyperscale and enterprise data centre operators.
• Transport Electrical engineering services for rail and tram networks, including traction power systems, overhead wiring, electrification studies, and electromagnetic compatibility assessments for rail operators and transit authorities.
• Water Engineering services for water and wastewater treatment facilities, including electrical infrastructure upgrades, motor protection, switchboard renewal and renewable energy feasibility for water corporations.
• Transmission & Distribution High voltage engineering services for transmission lines, terminal stations, substations, and distribution network infrastructure, including cable systems and condition assessments for transmission and distribution utilities.
• Industrial & Defence Specialist electrical engineering services for industrial facilities and Australian Defence Force sites, including earthing systems, arc flash assessments, embedded generation connections and infrastructure upgrades.
• Civil & Structural Design Civil and structural engineering design services for energy infrastructure, including solar farms, substations and industrial facilities, supporting developers and utilities across power and energy projects.
• Arc Flash Hazard Analysis Assessment services to identify arc flash hazards on electrical assets, determine arc flash boundaries, calculate incident energy levels, and recommend safety improvements and PPE requirements for utility, industrial and defence clients.
• Earthing Systems Design and testing services for earthing (grounding) systems including earth grid installations, earth potential rise assessments, and compliance verification against Australian standards for utilities, industrial and defence clients.
• Embedded Generation Studies Feasibility studies and connection services for distributed generation including solar, wind, and battery systems connected to distribution networks, for industrial sites and community energy projects.
• Transformer Fall Restraint Installation of safe-rated fall-restraint anchor points and ladder brackets on transformer assets, rated for operator and maintenance personnel safety at terminal stations and substations.
• Construction Engineering Construction engineering services including constructability reviews, construction staging, interface management, design management and on-site construction support for power and energy projects.
• Project Management End-to-end project management services for power projects including strategic planning, scheduling, cost control, risk management, and construction commissioning support.
• Digital Design (BIM/CAD) Building Information Modeling and Computer-Aided Design services using 3D engineering models, common data environments and automation tools for multidisciplinary coordination on infrastructure projects.

Quantifiable outcome

• Completed over 130 fall restraint anchor point and ladder bracket installations at 500kV and 220kV terminal stations and substations across Victoria
• +6 more outcomes

Named customers26 records

Segments7 records

Ideal customer profiles7 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Twelve partnerships are on record, tiered major acquisition, strategic, core project partner, long-term design partner, community partner, project partner, strategic client/partner and indigenous business partnership.

• Fyfemajor acquisitionStrategic or Co-development Partner · 1 September 2025On September 1, 2025, Middleton Group joined Fyfe, a leading Australian integrated engineering, environment, planning and survey firm with 650 staff across the country. This represents a significant acquisition/merger rather than a traditional partnership.
• Ricardo Rail AustraliastrategicStrategic or Co-development PartnerMiddleton Group worked alongside Ricardo Rail Australia to explore the feasibility of battery-powered electric trains in Adelaide for the South Australia Net Zero Rail Study. The partnership combined Ricardo's global expertise in sustainable rail with Middleton Group's traction power modelling capabilities.
• Doosan Gridtechcore project partnerImplementation/ SI/ Consulting PartnerDoosan Gridtech was the contractor selected by the developer to build the Capital Battery Energy Storage System (100MW/200MWh) and substation. Middleton Group was engaged to perform an independent design review of the design-and-construction contractor's design, OEM/Supplier documentation and system integration design, successfully managing the design interface between battery and inverter vendors.
• Edify Energycore project partnerStrategic or Co-development PartnerEdify Energy engaged Middleton Group for technical and project support for the installation of two 42MVA synchronous condensers for the Darlington Point Solar Farm. Middleton Group was seconded into Edify Energy to manage and interface with various project stakeholders including manufacturers, construction teams, project sponsors, transmission network owner, and the design team. Edify Energy had full confidence in Middleton Group personnel acting in their best interests.
• Accionacore project partnerImplementation/ SI/ Consulting PartnerAcciona required Owner's Engineer expertise for the design of a 220kV underground feeder cable system connecting the Mortlake South Wind Farm to Terang Substation. Middleton Group provided design, construction and compliance assessment, working closely with Acciona and JBA personnel on cable installation best practices.
• Next Generation Electrical (NGE)long-term design partnerStrategic or Co-development PartnerMiddleton Group serves as NGE's civil, structural, solar and electrical design partner for small-to-medium scale solar and battery energy storage systems, working together on solar farm sites across Australia including the Murrumbidgee Solar Farm.
• Gippsland Community Power Hubcommunity partnerGTM or Marketing PartnerMiddleton Group was engaged by the Gippsland Community Power Hub on behalf of Totally Renewable Phillip Island and Energy Innovation Cooperative to provide a pre-feasibility study for solar options on Phillip Island.
• Pacific Energycore project partnerImplementation/ SI/ Consulting PartnerPacific Energy engaged Middleton Group to provide electrical engineering services for the Puwera Landfill Gas Generator project in New Zealand. Pacific Energy acted as engineering lead overseeing technical delivery and coordination across multiple project elements. The project team also included Mahurangi Electrical, Ventia, Tyree NZ LTD, HV Power, Arthur D Riley & Co Ltd, Powerpro, Manufactured Switchgear Ltd, Infrastructure Asset Management Systems Ltd and Eneraque Renewables.
• Alpha Railproject partnerImplementation/ SI/ Consulting PartnerAlpha Rail (on behalf of Downer) engaged Middleton Group to carry out an electromagnetic impact assessment when KiwiRail planned to install a new bi-directional third track passing Middlemore Hospital in Auckland.
• KiwiRailstrategic client/partnerImplementation/ SI/ Consulting PartnerKiwiRail engaged Middleton Group on multiple projects including static frequency converter procurement for Auckland Western Line, 25kV AC auto transformer technical overview for Auckland rail network, and root cause investigation of pantograph flashover on Auckland Metro Rail Network.
• Ventiacore project partnerImplementation/ SI/ Consulting PartnerVentia engaged Middleton Group to test the safety of high voltage electrical systems and conduct earthing system performance testing on 24 bases managed for the Australian Defence Force across Victoria, South Australia, Western Australia and the Northern Territory. Principal Earthing Consultant led the engagement involving young engineers in field testing.
• Amotaiindigenous business partnershipStrategic or Co-development PartnerMiddleton Group's business in Aotearoa New Zealand is a proud member of Amotai, an organisation linking corporate procurement managers to Māori-owned businesses to grow indigenous businesses within the wider national economy through progressive procurement.

Scale indicators7 records

Recent moves7 records

Expansion highlights6 records

Peers

• pitt&sherry: pitt&sherry is an Australian engineering consultancy with comparable power, renewables and rail capabilities, including grid connection and HV engineering. It targets a similar mix of utility, developer and government clients across Australia and represents a direct mid-tier peer.
• Entura: Entura is a specialist Australian engineering consultancy focused on hydropower, renewables and grid connection. Its pumped hydro, wind and BESS advisory practices overlap materially with Middleton's work on Cultana, Mortlake wind farm and Springvale BESS.
• Arup: Arup is a global engineering consultancy with significant Australasian presence in rail, power and renewables. Middleton partnered with Arup on the Cultana Pumped Hydro project and competes with it on major infrastructure scopes where specialist power engineering and multi-disciplinary integration are required.
• SMEC (Snowy Mountains Engineering Corporation): SMEC is an Australian-founded engineering consultancy with strong hydropower, renewables and transmission credentials globally. Its work on pumped hydro, grid connection and large infrastructure overlaps materially with Middleton's renewables, BESS and Cultana-style pumped hydro engagements.
• WSP Australia: WSP is one of the largest global engineering consultancies with substantial Australian power, rail and renewables practices. As a broad incumbent, it competes with Middleton on integrated grid, transport and energy projects and can mobilise multi-disciplinary teams at greater scale.
• Fyfe: Fyfe is the Australian integrated engineering, environment, planning and survey firm that acquired Middleton Group in September 2025. It is now Middleton's parent and the most directly comparable peer in terms of service mix (power, infrastructure, environment) across the Australian market.
• AECOM: AECOM is a global engineering and infrastructure consultancy with extensive Australasian operations in power, rail, water and renewables. It is a broad incumbent that competes for the same large multi-disciplinary scopes as Middleton and can leverage global procurement and supply-chain advantages.
• Ricardo Rail Australia: Ricardo Rail Australia is a specialist rail engineering consultancy with which Middleton has partnered on the South Australia Net Zero Rail Study. It is a focused peer in the rail electrification and traction power advisory segment where Middleton has built deep capability.

Direct peers

• Aurecon: Aurecon is one of the largest Australasian engineering consultancies with deep power, renewables, rail and water practices. It competes head-to-head with Middleton on grid connection, BESS and rail electrification work for the same enterprise and government clients across Australia and New Zealand.
• GHD: GHD is a major Australian-headquartered engineering consultancy with extensive power, renewables, water and rail advisory practices. It offers a directly comparable multi-disciplinary service portfolio and competes on many of the same enterprise and government tenders as Middleton Group.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/channel/UCsK_G2R9btiannyIAwmADhg
• LinkedInlinkedin.com/company/middletongroup

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Middleton Group