What Is Integrated Project Delivery (IPD)?

For many years, the energy and resources sector applied a project execution model where engineering, procurement and construction (EPC) functioned as separate islands that shared information with each other. In theory, there's nothing wrong with that. In practice, however, the result was a cycle of misaligned incentives, late-stage design changes and costly disputes.

Today, a more sophisticated approach has taken centre stage in the shape of Integrated Project Delivery (IPD). With IPD now the preferred framework for the world's most complex capital investments, we're going to take a look at exactly what it is, why it works so well, and how companies like PDAS are using it to deliver unprecedented new levels of project certainty.

Key Takeaways

• IPD replaces siloed project delivery with collaboration. Instead of isolated EPC functions, IPD unites owners, designers and contractors under one shared framework.
• Risk and reward are shared across all parties. A single multi-party contract aligns incentives - everyone succeeds together and shares consequences when things go wrong.
• Early stakeholder involvement prevents costly rework. Builders, operators and suppliers engage from day one, improving constructability, operability and maintainability.
• Transparency and shared data drive better decisions. Open-book financials and a common data environment (e.g., BIM/digital twins) eliminate hidden costs, disputes and version confusion.
• IPD improves certainty in complex, evolving projects. Continuous assurance, structured governance and collaborative culture make IPD well-suited for large, high-risk energy investments.

How Does IPD Differ From Traditional Project Delivery Models?

At its heart, Integrated Project Delivery is a collaborative alliance that assembles people, systems and business structures into a single process. To understand its impact, you first need to grasp the problems of the traditional "Design-Bid-Build" model.

In the old days, the owner sat at the centre of a web of separate contracts. If a compressor station failed to fit its foundation on-site, the engineer blamed the fabricator, the fabricator blamed the surveyor and the owner paid for the delay. It's a story we're all familiar with in some form or another.

In an Integrated Project Delivery framework, this adversarial dynamic is replaced by a multi-party agreement. The owner, primary designer and lead contractor sign a single contract. This creates a "poly-party" structure where the goals of the individual companies are unified by the goals of the project. If the project succeeds, everyone profits - if it fails, the pain is shared. It's this alignment of financial interest that drives transparency and cooperation.

IPD vs EPC vs EPCm

So what's the difference between IPD and project models like EPC (Engineering, Procurement, Construction) and EPCm (Engineering, Procurement, Construction Management)? To gain a full understanding, you probably need to speak to one of our experts at PDAS, however, in the interest of brevity, here's a quick comparison guide:

Who holds the risk?

EPC: Contractor holds most delivery risk.

EPCm: Owner retains more risk; contractor manages.

IPD: Risk is shared proportionally across parties.

Contract structure

EPC: Single contract, lump-sum or guaranteed max price.

EPCm: Multiple owner-let contracts, managed by EPCm provider.

IPD: Multi-party agreement with shared incentive pool.

Level of collaboration

EPC: Transactional, scope-driven.

EPCm: Coordinated, but still segmented.

IPD: Fully collaborative, joint decision-making.

Works best when

EPC: Well-defined scope, low change tolerance.

EPCm: Complex portfolios needing coordination.

IPD: High complexity, evolving requirements, and strong integration needs.

What Are the Key Elements of an Integrated Framework?

While it's easy to understand the benefits of IPD, implementing it is a little more complex and involves a major shift in five key operational areas:

1. Early Involvement of Key Stakeholders

In a standard project, the construction team often sees the design for the first time when it's 90% complete. IPD flips this. Constructability experts, operations and maintenance (O&M) leads and major equipment suppliers are brought to the table during the conceptual phase. This makes sure that the desired facility is actually buildable, maintainable and operable, preventing the re-engineering cycles that typically plague the middle of project lifecycles.

2. Transparent Financials (The "Open Book" Policy)

IPD frameworks deliver transparency by using open-book accounting, where all project costs are visible to all the primary partners. Profit is often placed into a shared incentive pool that's only released when the project hits specific milestones for safety, quality and budget. This eliminates the incentive for contractors to hide costs or submit change orders to pad their margins.

3. Joint Decision-Making and Dispute Resolution

Because everyone is on the same team, disputes are handled through a project management team or a senior executive team made up of representatives from each partner. Instead of litigating over an error, the team focuses on the technical solution. In this way, decisions are made based on what is "best for the project," rather than what's best for a single contractor.

4. The Common Data Environment

You can't integrate people if their data remains segregated. IPD relies on a single source of truth - typically a digital twin or a highly integrated Building Information Modelling (BIM) system. When a change is made to any single specification, the procurement team, the structural engineers and the site teams see the update instantly.

5. Continuous Delivery Assurance

Because the risks are shared, objective verification is vital. In an IPD framework, assurance is a continuous pulse check as opposed to a final exam at the end of the project. This involves regular stage-gate reviews that focus on interface management, ensuring that gaps between different contractors' work scopes are sealed before they can cause issues.

Why Is the Energy Sector Moving Towards Integration?

The push towards IPD is understandable given the sheer scale and volatility of the modern energy transition. From multi-billion-dollar green hydrogen hubs to complex carbon capture retrofits, these projects simply have too many moving parts for a traditional siloed approach to succeed.

What's more, the widespread retirement of experienced engineers that the EMR sector is currently experiencing means that institutional knowledge is thinning out. An integrated framework compensates for this by creating a collaborative environment where younger professionals can work within a structured, transparent system that prioritises lessons learned in real-time.

What Are the Barriers to Integration and How Do You Overcome Them?

That all said, moving to an IPD framework isn't without challenges. It requires a high level of trust and a significant cultural shift for organisations used to "checking a box" and shifting risk to others. It also requires a new type of leader - one who's as fluent in financial structures like Power Purchase Agreements (PPAs) as they are in engineering specifications.

To get integration right, you'll also need to do a lot of heavy lifting early on. Putting in the extra work upfront to align everyone's goals and set up your digital systems might feel like a slow start, but it pays off substantially in the long run.

Some Common Misconceptions

IPD doesn't eliminate risk, but rather changes how it's managed. As a result, there's the EMR equivalent of "old wives' tales" about IPD:

"IPD means owners lose control."

No, it doesn't. In reality, governance actually becomes clearer, with owners gaining greater visibility and structured paths for escalation.

"Shared pain means shared mediocrity."

The opposite is true. In an IPD framework, the incentive pool isn't a participation trophy - it's strictly tied to hitting gold-standard benchmarks in safety, reliability and cost. If the team doesn't deliver excellence, no one gets the bonus.

"IPD only works on mega-projects."

Integration principles scale down effectively to portfolios, brownfield upgrades and key maintenance campaigns. So, that's not true either.

How PDAS Can Help

Integrated Project Delivery only works when governance, culture, and execution discipline move in lockstep - something that Project Delivery Assurance Services (PDAS) specialises in. As the delivery assurance firm of choice for companies like Anadarko, Total Energies, Rio Tinto, and Shell, we help organisations turn complex capital projects into predictable outcomes.

Backed by industry veterans who've led multi-billion-dollar programmes, PDAS brings both depth of insight and experience, ensuring your integrated delivery model performs not just in theory, but in the real world. Get started with PDAS and achieve a new standard of operational resilience and business certainty.