# Downer — Integrated infrastructure delivery, operations and maintenance

> Downer is an Australian-headquartered infrastructure services group with roots in the Downer & Co business formed in Wellington in 1933. Across Australia and New Zealand, Downer provides engineering, design, construction, operations and maintenance for electricity networks, water, rail and industrial energy. Its contracts range from individual construction packages to long-term network and asset services.

- **Legal name:** Downer EDI Limited
- **Headquarters:** North Ryde, Sydney, New South Wales, Australia
- **Founded:** 1933
- **Official website:** [Downer](https://downergroup.com/)
- **URL:** https://voltformer.com/epc-contractors/downer
- **Markdown:** https://voltformer.com/epc-contractors/downer.md
- **JSON:** https://voltformer.com/epc-contractors/downer.json

## CEO and leadership profile

### Peter Tompkins

Managing Director and Chief Executive Officer

Peter Tompkins has been Downer Managing Director and CEO since 27 February 2023. He joined Downer in 2008 and became general counsel in 2010, later serving as Chief Operating Officer; before returning to Downer leadership he was CEO and Managing Director of Spotless Group Holdings. He holds Bachelor of Laws and Bachelor of Commerce degrees from Deakin University.

- **In role since:** 2023-02-27
- **Sources checked:** 2026-10-11
- **Profile:** [Peter Tompkins](https://voltformer.com/ceo/peter-tompkins)

[Downer · Executive leadership team](https://downergroup.com/executive-leadership-team/) · [Downer · 2024 Annual Report](https://www.downergroup.com/Content/cms/media/2024/PDFs/Downer_2024_Annual_Report.pdf)

## How to select an EPC contractor

EPC means engineering, procurement and construction. Compare contractors by project technology, country, voltage level and contractual delivery scope.

## Directory methodology

This directory presents company profiles, not a scored ranking or certification. Company-wide experience may include engineering, EPCM, equipment supply and consortium roles. Confirm the exact role, current qualifications and project references with the official company before shortlisting.

## What should an EPC enquiry include?

Specify the project country, capacity, grid voltage, single-line diagram, site conditions, scope boundaries, target schedule and acceptance tests. Clarify who owns permitting, civil works, grid studies, commissioning and performance guarantees.

## Equipment enquiries submitted here go to Voltformer. Contact the listed company directly for its EPC services.

## Engineering specializations

- Electricity transmission and distribution
- Water and wastewater infrastructure
- Rail infrastructure and systems
- Industrial energy and carbon projects

## Declared capabilities

- **Basic and detailed engineering:** Listed capability; confirm project-specific scope
- **Procurement and supply:** Listed capability; confirm project-specific scope
- **Civil and structural construction:** Listed capability; confirm project-specific scope
- **Testing and commissioning:** Listed capability; confirm project-specific scope
- **High-voltage substation EPC:** Listed capability; confirm project-specific scope
- **Transmission lines:** Listed capability; confirm project-specific scope
- **Turnkey power plant EPC:** Not listed
- **Grid interconnection:** Listed capability; confirm project-specific scope

## Representative projects

### Molonglo Valley zone substation
- **Capacity / scope:** Turnkey design, construction and commissioning of a 132 kV substation
- **Country:** Australia | **Client:** Evoenergy | **Year:** 2026
- **Description:** Downer completed the new Molonglo Valley zone substation for Evoenergy with IEC 61850 protection, control and communications; it enables future connections, including BESS, rather than representing a completed battery project.
- **Technologies:** 132 kV substation, IEC 61850 protection and control
- **Original source:** [https://downergroup.com/news/enabling-future-bess-connections-in-the-act/](https://downergroup.com/news/enabling-future-bess-connections-in-the-act/)

### Project EnergyConnect — South Australian transmission lines
- **Capacity / scope:** Design, procurement and construction of a 206 km South Australian line package
- **Country:** Australia | **Client:** ElectraNet | **Year:** 2023
- **Description:** Downer delivered the South Australian package for ElectraNet, including the 330 kV Bundey–NSW border and 275 kV Bundey–Robertstown lines; construction finished in December 2023 and the whole interstate project had separate packages.
- **Technologies:** 330 kV and 275 kV transmission lines
- **Original source:** [https://downergroup.com/news/downer-delivers-south-australian-project-energyconnect-in-partnership-with-electranet/](https://downergroup.com/news/downer-delivers-south-australian-project-energyconnect-in-partnership-with-electranet/)

### Moomba carbon capture and storage facility
- **Capacity / scope:** Civil, mechanical and electrical construction and commissioning for defined CCS and heat-recovery scopes
- **Country:** Australia | **Client:** Santos | **Year:** 2024
- **Description:** Downer executed Santos’ two-phase CCS and heat-recovery/LoHeat works and managed four gas-plant shutdowns; the operator reports storage capacity up to 1.7 million tonnes of CO2 per year, not verified captured output.
- **Technologies:** CCS, Heat recovery steam generator and LoHeat
- **Original source:** [https://downergroup.com/case-studies/moomba-carbon-capture-and-storage-facility/](https://downergroup.com/case-studies/moomba-carbon-capture-and-storage-facility/)

## Technical services

- **Network design and construction:** Design, procurement, construction and commissioning for transmission lines, substations and distribution assets.
- **Water operations and maintenance:** Operate and maintain water, wastewater and stormwater networks and treatment assets under client agreements.
- **Rail construction and systems:** Deliver rail civil works, track, stations and systems packages, with scope defined by each client contract or alliance.
- **Industrial energy projects:** Construction and commissioning services for industrial energy and carbon-management facilities, including defined civil, mechanical and electrical scopes.

## Standards and certifications



## Official contacts

- **Address:** North Ryde, Sydney, New South Wales, Australia
- **Official website:** https://downergroup.com/contact-us/

## Reference statistics

- **Formed:** 1933
- **Initial Powerco field-services term:** 5 years
- **Moomba rated storage capacity:** Up to 1.7 million tonnes CO2/year

## Company and energy news

- [Downer secures more than $900 million in energy and utilities agreements](https://voltformer.com/news/utilities-900-million) — 2026-08-19 · [Markdown](https://voltformer.com/news/utilities-900-million.md)
- [Downer completes Molonglo substation to support future ACT energy connections](https://voltformer.com/news/act-bess-connections) — 2026-08-12 · [Markdown](https://voltformer.com/news/act-bess-connections.md)
- [Downer builds the transmission connection for Lotus Creek Wind Farm](https://voltformer.com/news/lotus-creek-transmission) — 2026-08-12 · [Markdown](https://voltformer.com/news/lotus-creek-transmission.md)
- [Downer advances Roopena switching station for ElectraNet](https://voltformer.com/news/roopena-sa) — 2025-09-23 · [Markdown](https://voltformer.com/news/roopena-sa.md)
- [Downer delivers AusNet’s first commissioned IEC 61850 controlled substation](https://voltformer.com/news/ausnet-digital-substation) — 2025-08-19 · [Markdown](https://voltformer.com/news/ausnet-digital-substation.md)
- [Downer joins Transgrid transmission and substation delivery panel](https://voltformer.com/news/transgrid-panel) — 2025-06-18 · [Markdown](https://voltformer.com/news/transgrid-panel.md)
- [Powerco awards Downer electricity field services agreement in New Zealand](https://voltformer.com/news/powerco-field-services) — 2025-03-31 · [Markdown](https://voltformer.com/news/powerco-field-services.md)

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