This Guidance provides practical recommendations on the design and use of the Single Project Pipeline as a tool for managing public investments. The Single Project Pipeline intends to ensure that investment projects are well prepared, fiscally sustainable, and aligned with national and sector priorities before they receive funding from public budgets. The Guidance presents a definition, essential pre-conditions and 11 principles that need to be honoured for its effective implementation.
The Single Project Pipeline in public investment management
Guidance for EU candidate countries and potential candidates
Abstract
Contents
Background to the Guidance
- EU integration requires investments in the public infrastructure of its candidates
- Single Project Pipelines to support the effectiveness of EU investments
- Defining the Single Project Pipeline
- About this Guidance
Preconditions for an effective Single Project Pipeline
- A capable public administration delivering policy and strategy goals
- A credible medium-term budget framework
- A well-designed and effective project cycle management system
- Linking policy planning, budgeting and investment planning
Principles, DO’s and DON’Ts for an effective Single Project Pipeline
- 11 key principles for the effective use of SPPs, each supported by a set of DO’s and DON’Ts
What is a Single Project Pipeline?
The Single Project Pipeline is the single government-wide pipeline of investment projects that have been appraised and are eligible for funding. It brings together projects from all sectors and funding sources, helping governments make informed investment decisions as part of the budget process. Rather than allowing projects to compete through separate sectoral pipelines, the SPP creates a transparent framework for comparing and prioritising proposals across government.
Three preconditions for an effective pipeline
A Single Project Pipeline can only function effectively when it is supported by three essential systems:
- Strong policy planning, ensuring projects contribute to national and sector priorities.
- A credible medium-term budget framework, linking investment decisions to available resources.
- An effective project cycle management system, guiding projects from identification through implementation and evaluation.
Together, these preconditions help governments select projects that deliver public value while remaining affordable and achievable.
11 principles for better public investments
The Guidance sets out 11 principles to improve public investment management across the project lifecycle. Each principle is supported by specific “DO’s” and “DON’Ts,” providing detailed operational guidance on project identification, screening, design, appraisal, funding, procurement, implementation, and evaluation. They emphasise quality assurance, transparency, affordability and evidence-based decision making at every stage.
Project screening decisions (Stages 1 and 3 of project cycle management) must be guided by priorities set out in national and sector strategies and plans.
Resources should not be allocated to project design without first conducting an initial screening of the project idea.
Project preparation should follow established guidelines and instructions, ensuring all relevant aspects are carefully addressed.
This means assuring ‘quality-at-entry’ through rigorous technical appraisal and independent quality review.
While all projects should, in principle, be subject to economic appraisal, the depth of preparation, scrutiny, and approval should be proportionate to project size, complexity, fiscal risk, and strategic significance.
Projects should only enter the SPP once they have reached a specified level of design and appraisal maturity sufficient to support informed prioritisation, affordability, and implementation decisions.
This means integrating project funding decisions into the annual and medium-term budget process, ensuring that ongoing projects are fully funded before committing to new initiatives, and that sufficient funding is available to sustain both.
Procurement rules and procedures reflecting internationally recognised principles, such as value for money, free competition, transparency, non-discrimination, equal treatment, mutual recognition and proportionality, are established and fully applied to all project procurement.
Strong monitoring and decision-making arrangements are in place to detect and respond to emerging implementation issues, including escalation to senior or political levels when required.
This means that project continuation is not guaranteed. Projects may be deferred, redesigned, or cancelled, even during implementation, if reassessment reveals that expected returns are insufficient, including on a sunk-cost basis.
End-of-project evaluations are undertaken, and the findings are documented, disseminated, and actively used to improve future investment decisions across the PIM cycle.
