Cutting energy costs by 30% - major European study shows value of PPPs
Public-Private Partnerships in Germany: A Game-Changer for Infrastructure Procurement—What the UK Can Learn
A new academic study from Germany is making waves in the world of infrastructure procurement. The findings suggest that Public-Private Partnerships (PPPs) deliver impressive benefits over traditional public sector procurement, offering a wealth of insights for policymakers in the UK. With life-cycle cost reductions of 17–35%, energy savings of up to 30%, and accelerated project timelines, this study is likely to reshape how we think about delivering public infrastructure—particularly in the face of the UK’s growing demand for sustainable, efficient public services and facilities.
The Key Findings of the German PPP Study
The 2024 European Comparative PPP Study (focused on Germany) analysed 16 school buildings, 2 administrative facilities, and 12 sports halls, covering a total of 29 buildings. The findings are compelling:
Cost Efficiency: Life-cycle costs over 25 years for PPP projects were 17–35% lower than the traditional benchmarks used by German municipalities. These projects also saw a 15–20% reduction in construction costs, with construction timelines reduced by 30%. The result? A significantly more cost-effective delivery model for public infrastructure.
Maintenance & Asset Value: Unlike traditional public procurement, which often underfunds maintenance (with budgets up to 50% below what’s needed), PPP projects are budgeted for maintenance at above-average levels. The contracts include clear service standards, automatic penalties for non-performance, and reserve accounts for quick access to funds. The end result is higher residual asset value, better maintenance, and fewer backlogs—key issues facing municipalities in both Germany and the UK.
Energy Efficiency: PPPs delivered energy savings of up to 30%, with heat consumption 41–61% below national standards. These projects are not only more cost-effective but are also more sustainable. The study highlights the importance of energy-saving incentives within PPP agreements, which help to reduce overall consumption while promoting sustainability.
Why PPPs Deliver Higher Value for Money
The success of these projects lies largely in the structure of the PPP contracts. The agreements are designed with built-in incentives to ensure efficiency, cost control, and performance. These incentives include:
Cost, schedule, and consumption caps to protect against budget overruns.
Penalties for underperformance to ensure that private partners meet agreed-upon standards.
Performance-linked remuneration and operator liability, meaning the private sector partner has a direct financial interest in keeping costs low and delivering high-quality results.
This aligns closely with the groundbreaking work of Nobel Prize-winning economists Oliver Hart and Bengt Holmström, whose research on incentive structures in long-term contracts has informed many modern PPP models. By aligning the private sector's incentives with the public good, PPPs are able to drive better outcomes than traditional procurement models, which often fail to maintain long-term cost control.
What This Means for the UK
For the UK, the implications of the German study are clear. As we move towards a post-pandemic recovery, the demand for effective, sustainable public infrastructure is greater than ever. The UK faces mounting challenges with its existing infrastructure—particularly in areas like school buildings, healthcare facilities, and local government buildings. With an infrastructure backlog worth billions of pounds and significant pressure on public spending, the case for adopting more PPPs in the UK is stronger than ever.
Cost Savings & Time Efficiency
UK policymakers, particularly those within HM Treasury and the National Infrastructure and Service Transformation Authority (NISTA), should take note of the study’s findings. With public sector budgets under constant pressure, the 17–35% savings on life-cycle costs and 30% reduction in construction time offered by PPPs could provide the necessary leverage to accelerate the delivery of essential public projects.
Tackling the Maintenance Backlog
The UK also faces a maintenance backlog estimated at billions of pounds. Traditional procurement methods have been inadequate in addressing this issue, with many public sector buildings in desperate need of repairs or upgrades. The German study’s insights into how PPPs can manage maintenance more effectively—through clear service levels, performance penalties, and dedicated reserve funds—could be a game-changer for local authorities and central government alike.
Energy Efficiency & Sustainability
Given the UK’s commitment to reducing carbon emissions and achieving net-zero targets by 2050, energy-efficient public infrastructure will be a priority. The German study shows that PPPs can reduce energy costs by up to 30%, and heat consumption can be significantly lower than conventional benchmarks. With an increasing focus on sustainable infrastructure, adopting PPPs could help the UK meet its climate commitments while also reducing long-term operational costs.
The Way Forward
For the UK to fully benefit from the insights of this study, a broader conversation needs to take place about how PPPs are implemented in the UK. This includes reviewing procurement frameworks, developing clearer guidelines for performance-based contracts, and exploring how energy efficiency can be integrated into long-term public infrastructure agreements.
The German study offers compelling evidence that PPPs are not just a tool for building infrastructure—they are a means to ensure that public assets are maintained, energy-efficient, and delivered on time and on budget. As the UK looks to upgrade and maintain its infrastructure, it would be wise to consider the benefits that PPPs can bring—both in terms of cost savings and long-term value for money.
Read details of the study here: https://shop.tredition.com/booktitle/European_Comparative_PPP_Study_Germany/W-471-552-035