We provide specialist high voltage power, renewable energy and control and automation engineering solutions across the following markets:


Grid connection options and studies,

Solar and wind yield assessments,

Balance of plant design,

Project and construction management.


Substation planning and design,

Earthing and protection studies,

Concept and detailed design,

Project and construction management.


Asset renewal strategies,

High voltage engineering and design,

Renewable energy solutions,

Project and construction management.


Substation concept and detailed design,

Protection and control upgrades,

Project and construction management,

REFCL Asset Assessments.


High voltage engineering and design,

Energy solutions,

Utility connections,

Plant reconfiguration,

Project and construction management,

REFCL Asset Assessments.


High voltage master planning and design,

Renewable energy solutions,

Project and construction management.

Our Services


Power network master planning
Business case development
REFCL impact assessments
Grid Connection options and analysis
Utility connection negotiation
Renewable energy feasibility studies
Solar and wind yield analysis
Energy storage feasibility


Concept and detailed design
Primary / switchyard design
Protection / control design
SCADA / communications design
Low voltage system design
Civil and structural design
Wind / Solar balance of plant design
Earthing and lightning protection design


Project management
Contracting & procurement strategies
Variation management & tracking
Governance auditing & reviews
Budget development & cost estimating
Project planning & scheduling
Risk mitigation & workshops
Construction & commissioning support



Asset assessment and auditing
Asset hierarchy risk profiling
Asset renewal strategies
Condition assessments
Energy efficiency strategies
Risk and operational safety assessments
Root cause analysis and expert witness services


Middleton Group has been recently recognised and celebrated for our endeavours and achievements as a fast growing new business in Australia. This recognition is demonstrated upon being the recipient of various awards:


Learn more about the Middleton Group team

Find out more about our latest projects


Firstly I would like to commend the professionalism and dedication of your team. Your team was made of experience and expertise. As for my organisation and I, the expected outcomes were successfully met. Firstly we wanted to know the impact of REFCL on our organisation. We wanted to know the options available to us. And most importantly we wanted to know some budgetary costs for the business to make the site REFCL ready.
In a very short time period, your team was able to give me a few options to work with. The impact assessment was very thorough and informative, given that I did not have details such as cable make and type, year of installation, equipment manuals, termination details, bushing details etc.
The report included issues which could have easily been missed by site engineers like myself. For example issues like metering equipment suitability, PPE upgrades to withstand higher voltages and protection setting changes.
I would not hesitate to recommend Middleton Group to anyone wishing to engage them for a similar service.

Sheeshendra Deo, Site Electrical Manager, D&R Henderson

REFCL Impact Assessment and Options Study 

Thanks very much for your work on our REFCL Assessment report.

Your report was comprehensive and its delivery very timely. We now have an excellent basis for planning our way forward for this site.

I have found it a pleasure to work with the Middleton group –  a very professional operation!

Gary Fox, Electrical Engineer, Broadspectrum | Gippsland Water

REFCL Impact Assessment and Options Study

That’s a very comprehensive report we very much appreciate your efforts and professionalism.
It’s a genuine pleasure to work with a company that understands the importance of customer relations.
We won’t hesitate to recommend you to any other’s that may need the services Middleton offer.

Paul Gardner, Victorian General Manager, Pacific Energy