Diona

What Diona does

SRG Global Utilities (formerly Diona) is an Australian infrastructure services company that has operated since 1980 and is now positioned as the utilities-focused subsidiary of ASX-listed SRG Global. The company delivers end-to-end asset lifecycle solutions across four vertical markets — Water and Wastewater, Gas, Power and Energy, and Transport Enabling — with offices in Brisbane, Sydney, Adelaide, and Melbourne serving clients across all Australian states and territories. Its service portfolio spans advisory and early contractor engagement, design, program management, construction, community and stakeholder engagement, asset rehabilitation, testing and commissioning, and ongoing maintenance, with a stated strategic focus on water security and energy transition infrastructure.

The company's core technology is conventional infrastructure delivery — civil construction, pipeline rehabilitation, substation build-out, and water/wastewater network renewal — rather than proprietary software or digital products. It competes on domain specialization, pre-qualification on government utility procurement panels, and the ability to mobilize multi-disciplinary crews across geographically dispersed Australian projects. Its customer base is dominated by government-owned utilities (Urban Utilities, Sydney Water, SA Water, WaterNSW, Hunter Water, Central Highlands Water, Yarra Valley Water, Ausgrid, and various local councils) supplemented by enterprise gas and infrastructure operators such as APA Group, Multinet Gas, and ACCIONA.

SRG Global Utilities generates revenue through project-based professional services engagements, procured via direct government tenders and multi-year framework agreements; pricing is quote-based and not publicly disclosed. The company has extended its delivery capacity through a joint venture with McConnell Dowell, exhibited and presented at Ozwater 2026 in Brisbane, and runs a talent-development initiative (the Pipeline Challenge) in partnership with universities and JV partners. No AI or proprietary software product is part of the offering, and revenue figures are not publicly disclosed at the subsidiary level.

Name

Diona

Legal name

SRG Global Utilities

Website

https://diona.com.au

Company type

Private

Founded year

1980

Operating status

Operating

Headcount range

501–1,000 employees

Short description

SRG Global Utilities (formerly Diona) is an Australian infrastructure services subsidiary of SRG Global delivering end-to-end asset lifecycle solutions — design, construction, program management, and maintenance — for water, gas, power, and transport utility clients across Australia.

Ownership category

akta.pro rank

Product category

Utility Infrastructure Construction Services

NAICS

Water Supply and Irrigation Systems (221310), Water, Sewage and Other Systems (2213), Water Supply and Irrigation Systems (22131)

SIC

Water Supply (4941), Natural Gas Distribution (4924), Services-Facilities Support Management Services (8744)

akta.pro primary industry

Capital Delivery, Asset Management & Renewal Programs (Pipes, Plants, Pumps) (EUANAAAK)

akta.pro secondary industries

Design & Engineering for Renewal/Expansion (Pipelines, Pump Stations, Treatment Plants) (EUANALAD), Water & Wastewater Infrastructure Asset Management (EUAEAMAH), Gas Distribution Operations (Day-to-Day Field & System Operations) (EUAJAAAB)

Keywords

• Infrastructure construction services
• Water pipeline construction
• Utility asset management
• Civil engineering services
• Gas network construction

Headquarters

HQ city

Amos Quarries

HQ country

Australia

HQ region

Oceania

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Marketing or Sales

Revenue model

1. Infrastructure Project Services: Revenue is generated through project-based engagements for government utilities and infrastructure operators, including program management, design, construction, community engagement, renewals, and maintenance services.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Diona (now operating as SRG Global Utilities) provides end-to-end infrastructure asset lifecycle services across Australia, specializing in the water security and energy transition sectors. Service offerings span program management, advisory and early contractor engagement, design, construction, testing and commissioning, asset rehabilitation and maintenance, and community and stakeholder engagement for government water utilities, gas transmission/distribution operators, electricity distributors, and transport-enabling projects.

Product overview

SRG Global Utilities (formerly Diona) operates as an infrastructure services company providing end-to-end asset lifecycle solutions across Australia. The company offers a unified suite of services including advisory, construction, design, program management, testing and commissioning, asset rehabilitation, maintenance, and community/stakeholder engagement. These services are delivered across four key market sectors: Gas, Power and Energy, Transport Enabling, and Water and Wastewater. The company rebranded from Diona to SRG Global Utilities and is part of SRG Global.

Differentiator

Problem solved

Functional benefit

Products and services

• Advisory – Early Contractor Engagement Advisory service providing early contractor engagement to infrastructure clients, supporting planning, scoping and front-end decision-making for utility and transport infrastructure programs. Targeted at government utilities and infrastructure operators.
• Program Management Program management service delivering coordinated oversight of multi-project utility infrastructure programs from planning through delivery for government water, gas and electricity clients.
• Design Engineering design services for water, gas, power and transport-enabling infrastructure projects, supporting renewals, augmentations and new asset construction for utility clients.
• Construction Construction services for water mains, trunk water mains, reservoirs, wastewater infrastructure, gas pipelines, substations, cable installations and transport-enabling works, delivered for government utilities and infrastructure operators across Australia.
• Testing and Commissioning Testing and commissioning services for newly built or rehabilitated water, gas and power infrastructure assets to verify operational readiness and regulatory compliance.
• Asset Rehabilitation and Maintenance Asset rehabilitation and maintenance services for aging utility infrastructure including pipeline coating, tank remediation, mains renewal and ongoing maintenance programs for water, gas and power assets.
• Community and Stakeholder Engagement Community and stakeholder engagement services integrated into infrastructure project delivery to manage social license, communication and consultation with communities, councils and regulators during program execution.

Named customers17 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Two partnerships are on record, tiered core and flagship.

• McConnell DowellcoreStrategic or Co-development Partner · 1 January 2026McConnell Dowell SRG Global Joint Venture formed to deliver infrastructure projects and talent development initiatives. At Ozwater 2026, the joint venture shared how the Pipeline Challenge is helping build future infrastructure talent by connecting students with real-world project experiences.
• SRG GlobalflagshipStrategic or Co-development PartnerDiona operates as SRG Global Utilities under the SRG Global parent company. SRG Global Utilities (formerly Diona) offers end-to-end asset lifecycle solutions in program management, design, construction, community and stakeholder engagement, renewals, and maintenance. The company is part of the SRG Global group focused on enabling communities to thrive through essential infrastructure.

Scale indicators1 record

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Downer EDI: Large ASX-listed infrastructure services company with significant water, gas, power, and transport infrastructure capabilities across Australia and New Zealand. Operates at greater scale and broader portfolio, overlapping on utility infrastructure projects.
• Ventia: Large Australian and New Zealand infrastructure services provider with operations across utilities, transport, and defense. Directly comparable on water and gas utility maintenance and capital works at scale.
• John Holland: Major Australian infrastructure contractor (owned by CRH) with capabilities across water, rail, roads, and energy. Competes on larger water infrastructure programs and transport enabling works.
• CPB Contractors: CIMIC-owned tier-one Australian contractor delivering major infrastructure projects including water and transport. Larger and broader in scope, but overlaps on large water and utility infrastructure tenders.

Direct peers

• Service Stream: ASX-listed Australian infrastructure services provider specializing in utility networks (water, gas, electricity, telecommunications). Closely comparable in target customer base (government utilities) and core offering (design, construction, maintenance of utility networks).
• McConnell Dowell: Major Asia-Pacific infrastructure contractor with deep water, gas, and power pipeline construction capabilities. Diona's active JV partner on the McConnell Dowell SRG Global Joint Venture, making them the most direct comparable in scope and customer base.
• UGL Limited: CIMIC-owned engineering and infrastructure services company specializing in rail, power, and water infrastructure across Australia. Comparable in power substation work (e.g., Ausgrid projects) and broader utility infrastructure delivery.
• Zinfra: Specialist energy infrastructure services provider in Australia (subsidiary of APA Group). Directly comparable in gas and electricity transmission/distribution construction and maintenance, and notably a peer/partner to Diona via the APA Group customer relationship.
• Fulton Hogan: Australia and New Zealand infrastructure services company with water, utilities, and civil infrastructure capabilities. Directly comparable in water pipeline construction, maintenance, and council-level utility work.

Regional players

• Brisbane City Works (City of Brisbane assets/contractors): Local Queensland infrastructure delivery entities (including council-owned entities and local contractors) that compete for Brisbane City Council water and stormwater projects such as those in Diona's project portfolio.

Market position

Strengths5 records

Weaknesses1 record

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/DionaCivil

Revenue estimate

Valuation estimate

Number of profiles

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 Diona