SERVICES | INVESTMENT DECISION PROCESS

The HAAS Investment Decision Process

Independent owner-side advisory for Net Zero transformation and sustainable asset renewal investment decisions.

DECISIONS BEFORE SOLUTIONS.

The HAAS Investment Decision Process provides a structured owner-side approach from Investment Pathway Assessment and Evaluation through Delivery Assurance to Performance Validation.

Major investment decisions should not begin with a preferred technical solution. HAAS starts with the owner’s objectives, available evidence and assumptions, and the Investment Pathways worth investigating.

Our Approach

Four Decision Stages. One Continuous Owner-Side Perspective.

Each Decision Stage addresses a defined owner question and provides a clear basis for the decisions and actions that follow.

The same independent owner-side perspective continues across the process — from Investment Pathway Assessment through Delivery Assurance to Performance Validation.

The ownership perspective

Is this the right investment decision? Is it robust under uncertainty? Does its logic remain intact through delivery? And does it deliver the expected results in operation?

01 Assess

02 Evaluate

03 Assure

04 Validate

Decision Stage Detail

Every stage in full — scope, focus areas and deliverables.

Each Decision Stage below sets out its mandate, typical focus areas, executive deliverables and Stage Gate decision. Select a stage to expand it.

01 - Decision Stage
Investment Pathway Assessment

Which investment pathways deserve further investigation?

Before capital is committed, HAAS provides an independent, owner-side assessment of the investment pathways available to address a major infrastructure renewal or Net Zero objective.

Rather than validating a preferred technical solution, this stage tests the credible range of pathways against long-term owner value, cost, technical performance and Net Zero ambition.

The outcome is a shortlist of investment pathways worth carrying into detailed evaluation — with a clear, board-ready rationale for what has been excluded and why.

Stage Gate 1

The owner decides which pathways proceed to detailed evaluation, which are set aside, and whether Decision Stage 2 is released.

02 - Decision Stage
Investment Pathway Evaluation

Which investment pathway offers the greatest long-term owner benefit?

Stage 2 subjects the shortlisted pathways to detailed, independent evaluation. Technical, financial and Net Zero performance are tested against the owner’s actual objectives — not vendor assumptions.

HAAS compares pathways on CAPEX, OPEX, total cost of ownership, technical performance, emissions trajectory and risk, and stress-tests the business case behind the preferred option.

The result is the evidence base the Board needs to commit capital with confidence — and the baseline that Stage 3 will subsequently protect.

Stage Gate 2

The owner approves the preferred investment pathway and business case, and decides whether Decision Stage 3 is released.

03 - Decision Stage
Investment Delivery Assurance

Protecting the approved investment decision through delivery

Board approval is only the beginning. Stage 3 provides independent owner-side assurance through planning, procurement, contract award, implementation and commissioning.

HAAS focuses on maintaining alignment with the approved Investment Pathway, including its technical and economic targets, performance requirements, Net Zero objectives, accepted risks and the owner’s long-term interests.

HAAS reviews procurement and bid documents, assesses the technical and economic implications of contract terms, proposed changes and alternatives, and participates in selected commissioning and performance tests. Design, project management, construction supervision and formal contract administration remain with the owner’s appointed parties.

Stage Gate 3

The owner decides whether the delivered investment pathway meets approved requirements, which deviations are accepted, and whether Decision Stage 4 is released.

04 - Decision Stage
Investment Performance Validation

Which investment pathways deserve further investigation?

Once assets are in operation, Stage 4 independently validates whether the investment pathway is achieving — and sustaining — the technical, economic and emissions outcomes it was approved to deliver.

HAAS reviews operating data supplied by the owner’s monitoring, building management, energy management and MRV systems, reconciles actual conditions against original assumptions, and distinguishes genuine performance shortfalls from changed operating conditions.

Where results fall short, HAAS identifies root causes and recommends corrective or optimisation measures, translating findings into board- and investment-committee-ready reporting.

Stage Gate 4

The owner decides whether the investment is achieving expected results, which corrective actions to pursue, and at what interval performance will be re-validated.

Executive Capability

Every Decision Stage Includes Executive Investment Translation

Independent evaluation creates insight. Executive Investment Translation turns that insight into confident executive decision-making.

Whatever the stage, every engagement combines three core capabilities.

Independent Evaluation

Technical reality, business case assumptions and alternative investment pathways are independently evaluated from the perspective of long-term ownership.

Executive Investment Translation

Complex technical, commercial, financial and sustainability findings are translated into clear executive investment insights that support confident capital allocation decisions.

Board Decision Support

Boards and investment committees receive clear, independent decision intelligence that strengthens governance, reduces uncertainty and helps protect long-term asset value.

FREQUENTLY ASKED QUESTIONS

Questions owners often ask before engaging HAAS

Does HAAS replace our existing engineers, consultants or project managers?

No. HAAS works from the owner’s perspective, independently reviewing, challenging and integrating specialist inputs. Detailed design, specialist engineering, project management and formal contract administration remain with the owner’s appointed parties.

Why involve HAAS if we already have technical and sustainability advisors?

Major Net Zero and asset renewal decisions often draw on multiple studies, strategies and specialist recommendations developed for different purposes and based on different assumptions. HAAS brings these inputs together into a coherent owner-side investment view and evaluates the resulting Investment Pathways against the owner’s objectives.

Does every engagement start with Stage 1?

The process normally begins by establishing whether the existing decision basis is sufficiently robust. Where substantial work already exists, HAAS can review and build on it rather than duplicate it.

Who makes the final investment decision?

The owner does. HAAS provides the independent assessment and evaluation required to support Asset Management, executive management and Investment Committees in making an informed capital decision.

What does Investment Delivery Assurance mean?

HAAS evaluates not only the expected performance of an Investment Pathway, but also how robust that performance remains if key assumptions change. Depending on the investment, this may include scenario analysis, sensitivity analysis and probability-based evaluation of variables such as CAPEX, OPEX, energy prices, emissions factors, utilisation, infrastructure availability and regulatory change.

What does Investment Delivery Assurance mean?

HAAS does not manage delivery. It independently assesses whether procurement, proposed changes, contractual terms and implementation remain aligned with the approved Investment Pathway and its intended outcomes.

How is actual investment performance validated?

Following implementation and commissioning, HAAS compares actual technical, economic, energy and emissions performance against the assumptions, targets and performance requirements underpinning the approved investment.