Decarbonization in the building sector: strategy instead of piecemeal work
Rising energy prices, stricter regulation and growing ESG pressure are making the decarbonization of real estate portfolios a key strategic task. With the German Climate Protection Act, the European Green Deal and the new EU Buildings Directive (EPBD), it is clear that the building sector must deliver.
The focus is particularly on the most energy-intensive buildings. The EU requires at least 16% of the most energy-intensive non-residential buildings to be renovated by 2030 and at least 26% by 2033. This is regulated by binding minimum energy standards. Those who fail to act must expect valuation discounts, rising operating costs, higher CO₂ prices and poorer financing conditions.
Create transparency
The first hurdle is the frequent lack of transparency. Many owners do not know how high the actual emissions of their buildings are. There is often a lack of reliable data on energy consumption, refurbishment status or technical systems. This is where the portfolio analysis comes in: It structures the inventory data, links it to benchmarks and makes visible where there is an acute need for action.
Tools such as the Carbon Risk Real Estate Monitor (CRREM) can also be used to show whether a building is still on the Paris climate path – or at what point it becomes a “stranded asset” in regulatory and economic terms. This transforms pure data analysis into a strategic forecast. Owners can see when they are leaving the decarbonization path and where investments are crucial to secure value.
Strategy in steps
A decarbonization strategy depends on a systematic approach – from the definition of objectives to structural implementation. A multi-stage roadmap has proven its worth here.
1. define goals and framework conditions: The first step is to clarify the rules of the game: What legal requirements apply to existing buildings – from the GEG to the EU Buildings Directive to the taxonomy? What deadlines need to be met? And: should the focus be exclusively on emissions from operations (operational carbon), or will emissions from construction processes and materials (embodied carbon) also be included? These questions determine how comprehensive the strategy is and how ambitious the target paths are set.
2. analyze the portfolio: Opportunities and risks can be precisely identified on the basis of a solid database. This includes Energy and consumption data, but also building parameters such as year of construction, envelope quality, system technology and previous refurbishment measures. Simulations can be used to run through various scenarios: What are the benefits of a new heating system? How do insulation measures change the energy requirement? What effect does switching to renewable Energy have?
3. evaluate measures: Every measure must be economically viable. In addition to investment costs and CO₂ savings, amortization periods, component life cycles and possible subsidies also play a role. An intelligent evaluation process ensures that resources flow to where they have the greatest leverage.
4 Prioritize and implement: Not everything can be realized at the same time. The following therefore applies: prioritize short-term quick wins and combine larger investments with the maintenance cycles that are due anyway. In this way, the strategy remains plannable, affordable and efficient.
Decarbonization needs strategy – and time
Decarbonization is not a sprint, but a long-distance run. It often takes several years per building from analysis to implementation. Anyone who wants to be climate-neutral by 2045 must therefore act now – with a clear roadmap that combines technical feasibility, economic viability and regulatory requirements.
A well-founded portfolio analysis is the foundation for this. It creates transparency, makes risks visible and translates climate targets into concrete measures. Starting today not only secures the value of your real estate portfolio, but also gives you a real competitive advantage – in terms of financing, ESG assessment and dialog with users.
Author:
Bernhard Schochenmaier
Sustainability consultant at THOST Projektmanagement GmbH