Delivering Integrated Carbon & Sustainability Outcomes Across Major Transport Infrastructure

Client: METRONET Morley–Ellenbrook Line

Sector: Transport (Rail)

Service Area: Sustainable Infrastructure, Carbon & Circularity

Overview

Perspektiv provided end-to-end sustainability support for the METRONET Morley–Ellenbrook Line, embedding carbon reduction, circularity and sustainability performance across the project lifecycle, from reference design through to construction and as-built certification.

Working closely with the broader project team, Perspektiv helped drive measurable sustainability outcomes through an integrated approach to Life Cycle Assessment (LCA), sustainable infrastructure ratings and resilience planning. Our involvement supported both project compliance requirements and broader ambitions to deliver a more sustainable piece of public infrastructure for Western Australia.

The Challenge

As a major transport infrastructure project with ambitious sustainability targets, METRONET’s Morley–Ellenbrook Line required a coordinated approach to carbon management, materials assessment and ratings performance across multiple project phases and disciplines.

The project needed to balance constructability, cost and program constraints while still achieving strong sustainability outcomes under both Infrastructure Sustainability (IS) and Green Star frameworks. This required continuity from early design through to delivery, as well as robust evidence management and alignment across multiple stakeholders.

Our Role 

Perspektiv delivered integrated carbon and sustainability services to the alliance for the duration of the project, including Life Cycle Assessments (LCA) at reference design, final design and as-built stages.

Our team developed and maintained centralised LCA models supported by project-specific sub-models, enabling ongoing refinement of carbon calculations and supporting informed decision-making as the design evolved. This approach allowed sustainability considerations to remain embedded throughout delivery, rather than being treated as a standalone compliance exercise.

Our role also included ensuring alignment with all relevant IS and Green Star LCA credits, supporting the project team in maximising ratings outcomes while maintaining an efficient and streamlined evidence base.

In addition to carbon and circularity services, Perspektiv provided broader sustainable infrastructure support, including development of the project Resilience Plan and comprehensive as-built rating submission support.

METRONET was a major infrastructure project with ambitious sustainability targets

Our Approach 

Early Engagement and Project Continuity

Perspektiv was engaged from the reference design stage and remained involved throughout design, delivery and construction. This continuity enabled sustainability opportunities to be identified early and refined over time, improving both efficiency and overall project outcomes.

Iterative Carbon Optioneering

Our team undertook iterative optioneering to test opportunities for carbon and material reductions across the project. By assessing different design and material scenarios through the LCA process, the project team was able to make more informed sustainability decisions supported by quantified data.

Integrated Ratings Strategy

To support both Infrastructure Sustainability Council (ISC) and Green Star requirements efficiently, Perspektiv implemented a streamlined dual-rating approach using a shared evidence base. This reduced duplication, improved consistency across submissions and simplified coordination across the wider project team.

Centralised LCA Modelling

A centralised LCA framework allowed the project to maintain consistency across assessments while accommodating project-specific design updates and construction changes. This created a more agile and scalable approach to carbon assessment across a complex infrastructure program.

Outcomes & Impact

Perspektiv’s involvement contributed to a range of significant sustainability outcomes across the project lifecycle.

Carbon & Circularity Outcomes

• Exceeded contracted carbon reduction targets 

• Achieved measurable embodied carbon reductions through targeted design optimisation initiatives 

• Delivered Life Cycle Assessments aligned with IS and Green Star requirements across reference design, final design and as-built phases

• Achieved near-maximum Green Star LCA points

Ratings & Certification Outcomes

• Secured maximum points across key IS credits, including Ene-1, Ene-2, Ene-3, Wat-1 and Res-6 

• Contributed to the achievement of a 6 Star Green Star rating

• Supported strong Infrastructure Sustainability (ISC) outcomes across multiple submissions

• Contributed to the delivery of Australia’s first IS v2.0 Platinum As-built rating 

Program & Delivery Outcomes

• Enabled consistent, high-quality sustainability outcomes across a complex infrastructure program 

• Streamlined evidence management and ratings coordination through a single evidence base approach 

• Embedded sustainability considerations throughout project decision-making rather than as a retrospective compliance process

Key Learnings

The project reinforced the importance of engaging sustainability and carbon specialists early in the design process and maintaining continuity through delivery and construction. Early involvement creates greater opportunity to influence material selection, design optimisation and long-term project outcomes.

The project also demonstrated the value of integrating technical expertise with practical delivery knowledge. By combining robust LCA methodologies with a collaborative, solutions-focused approach, sustainability initiatives were able to support broader project objectives rather than compete with them.

Most importantly, the success of the project highlighted how engaged and collaborative client and delivery teams can significantly amplify innovation, sustainability performance and overall project impact.