Enhanced energy efficiency performance

Increases in energy efficiency allow enterprises, real estate owners and tenants to profit now and in the future from clear economic and ecological advantages. We carry out energy-consumption analyses to identify possible ways of achieving greater efficiency. We then use our results to derive practical measures for increasing energy efficiency. We plan the successful implementation of the measures and monitor their effectiveness.

The aim of our approach is to quickly identify relevant users offering significant potential. The measures we then derive for immediate implementation can be expected to amortise in 1 to 2 years. Our range of services covers the entire process of operation optimisation, from initial systems evaluation to successful solution monitoring:

  • Initial evaluation for recording the most important data and systems
  • Measurements to assess the effective operation and user behaviour
  • Functional testing of important systems and equipment
  • Drafting of optimisation measures together with specific system changes
  • Implementation support and monitoring
  • Effectiveness monitoring
  • Introduction of energy-use monitoring for sustainable optimisation

expert

Uetz Robert

Uetz Robert
Bereichsleiter Energieeffizienz
A+W Zürich

Verdegaal Joke

Verdegaal Joke
Teamleiterin Energieconsulting
A+W Bern

Maucoronel Corentin

Maucoronel Corentin
Directeur adjoint A+W Genève / Directeur
A+W Lyon

LOSIC Miro

LOSIC Miro
Responsable du département Electricité-AdB
A+W Lausanne

On the path to CO2 reduction

On 6 October 2017, Switzerland ratified the Paris Climate Agreement, which aims to significantly reduce greenhouse gas emissions. The goal of the agreement is to limit global warming to 1.5 degrees Celsius compared to pre-industrial levels. The total revision of the Swiss CO2 Act provides for a staged CO2 reduction in the building sector with limit values and increased CO2 taxes. For property owners and investors, the question of which is the optimal CO2 reduction strategy arises. Carbon due diligence supports asset and portfolio management in balancing CO2 emissions, setting realistic climate policy objectives and optimising property business plans that make sense both ecologically and economically.

CO2 balancing and target setting

  • Balancing of CO2 emissions according to Swiss standards (SIA) or international standards (GHGP)
  • CO2 benchmarking with comparable properties and portfolios
  • Definition of CO2 reduction targets taking into account cantonal, national and international requirements

Development of technical/energy principles 

  • Building condition analyses including technical maintenance and repair planning 
  • Building energy certificates including energy consumption and CO2 emissions 
  • Evaluation of heat generators including comparison of variants and recommendations 
  • CO2 controlling including CO2 monitoring, analysis and recommendations regarding energy-efficiency initiatives 
  • Drafting of a sustainability standard for development and acquisition 

CO2 modelling including costs, earnings and value 

  • Definition and modelling of different renewal scenarios and initiatives, taking into account existing maintenance planning 
  • Definition of model input variables such as energy renewal initiatives for heating, building envelope and technology and the timing of renewal 
  • Analysis and assessment of model output variables such as CO2 emissions, energy, maintenance and investment costs, as well as the earning power of individual properties and the entire portfolio 
  • Optimisation of the CO2 reduction strategy at portfolio level: reduction in the portfolio vs. compensation at home and abroad 
  • Optimisation of business plans at property level: renewal cycles and scope of renewal 

Thanks to our holistic approach to CO2 management and a wide range of instruments, we offer unique advice on carbon due diligence throughout Switzerland.
The integrated consideration of climate policy objectives, technical renewal requirements, CO2 reduction potential and economic potential, taking into account costs and earnings, enables the definition of CO2 reduction strategies that create value rather than destroying it.

expert

Huterer Andreas

Huterer Andreas
Bereichsleiter
A+W Zürich

Performance gap analysis

The demands placed on the planning of construction projects are constantly increasing. Flexible utilisation concepts, energy efficiency, sustainability, increased comfort requirements and, last but not least, time pressures often make it difficult to achieve the specified performance targets. A building's performance is influenced in all of its life cycle phases by decisions, actions and also failures of the different actors. 
Unwanted deviations from defined performance targets lead to a performance gap. Due to the multi-layered nature of the requirements and the complexity of the issues, a systematic approach is needed to assess the performance gap.

The performance gap describes the occurrence of undesired deviations from the defined performance targets. Depending on the focus, this requires different measures and services.

Technical performance gap

  • Checking the installations carried out against the concept ordered
  • Comparison of the planning values with the actual data set for the building technology
  • Installation of an automated test system for continuous control of the control loops
  • Differences between planning and execution are checked and documented on site (target/actual comparison)
  • Quality assurance of the construction documentation
  • Proposal of measures to close gaps

Energy performance gap

  • Checking the measurement concept
  • Comparison of the operating data with the planning values
  • Reporting and interpretation of the differences between forecast and real measured energy consumption/energy costs 
  • Proposal of measures to close gaps
  • Monitoring the measures to be implemented
  • Success control
  • Leading the quality management

Comfort performance gap

  • Metrological verification and documentation of planning requirements during operation
  • Identifying the influencing variables of user behaviour
  • Measuring and assessing the indoor climate 
  • (e.g. temperature, relative humidity, CO2)
  • Proposal of measures to close gaps
  • Monitoring the measures to be implemented
  • Success control
  • Leading the quality management

During the analysis, we evaluate the requirements and expectations of the stakeholders and jointly define the performance targets and success factors. 
Ideally, we monitor the projects in all its construction phases in order to identify the gaps between target and actual at an early stage or even prevent them. In this way, we protect the investments and create clear added value for all parties involved.

expert

Uetz Robert

Uetz Robert
Bereichsleiter Energieeffizienz
A+W Zürich