Senior Electrical Estimator, Substations and BESS
ACCIONA is a global company, leading in the development of regenerative infrastructure that creates a positive impact on society.
Our workforce consists of more than 65,000 professionals, present in more than 40 countries across the five continents, all contributing to our mission to design a better planet.
Are you a passionate individual who wants to make a difference, promote sustainable development, and find solutions to the biggest global challenges, including climate change, overpopulation, and water scarcity?
Come and join us in building the infrastructure our planet needs to achieve a sustainable future.
Shape bids that power national energy transition
Work with experts in complex infrastructure tenders
Build estimating capability across a growing team
Influence methodology for major HV line projects
Join a global leader delivering complex civil works
Contribute to critical national transmission upgrades
About the Project
ACCIONA delivers complex civil and infrastructure projects across Australia.
Our Transmission team supports national tenders that strengthen networks across varied terrain.
You help shape bids that support energy transition and long term infrastructure resilience.
About the Opportunity/Position
The Senior Electrical Estimator - Substations/BESS develops accurate, timely, and compliant cost estimates and proposals for electrical infrastructure projects.
The role's primary focus is on high-voltage substations (AIS/GIS) and Battery Energy Storage Systems (BESS).




As part of a national transmission and energy team, the estimator supports tenders across multiple regions, bringing specialist expertise in substations and energy storage systems, including grid connections and balance-of-plant scope.
What are the key accountabilities for the position?
Develop cost estimates for HV substations (AIS/GIS) and BESS from first principles (materials, plant, labour, subcontractor pricing)
Coordinate procurement and tendering strategies, including subcontractor pricing and bid meetings
Conduct risk assessments and manage provisional sums/contingency allowances
Prepare estimate basis documents, WBS, and bridging documents for cost tracking
Present estimates and cost reports to senior management and clients
Apply CCS/Candy, Expert Estimation, Excel, and Power BI for estimating and reporting
Qualifications and Competencies;
Degree or Diploma in Electrical Engineering, or a Trade Electrical qualification with on-site experience
6+ years' experience in engineering, project delivery, or related technical roles within infrastructure, utilities, or construction
Includes a minimum of 4+ years' estimating experience on major infrastructure projects,



preferably transmission lines, high-voltage (HV) systems, substations, or electrical infrastructure
Proficient in CCS/Candy, Expert Estimation, Excel, and Power BI
First Principles estimating skills, ability to interpret drawings
Acciona is a global leader in renewable energy and infrastructure, driving the transition to a low-carbon economy.
By focusing on regenerative infrastructure, we aim to deliver a sustainable future for Australia and Current Zealand.
Defined by a "Business as Unusual" approach, we undertake complex projects across the transport, water, and energy sectors—including roads, rail, bridges, and water treatment facilities.
Through technical excellence and environmental stewardship, we create lasting positive impacts for people and the planet, ensuring our infrastructure supports society for generations to come.
Acciona is a global leader in renewable energy and infrastructure, driving the transition to a low-carbon economy.
By focusing on regenerative infrastructure, we aim to deliver a sustainable future for Australia and New Zealand.
Defined by a "Business as Unusual" approach, we undertake complex projects across the transport, water, and energy sectors—including roads, rail, bridges, and water treatment facilities.
Through technical excellence and environmental stewardship, we create lasting positive impacts for people and the planet, ensuring our infrastructure supports society for generations to come.
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📌 Senior Electrical Estimator, Substations And Bess (Melbourne)
🏢 ACCIONA Australia
📍 Melbourne