Publication Category

Subtask C: Market support measures

Report on Labelling possibilities investigation Report on Labelling possibilities investigation
Final C5 deliverable report
October 2015 - PDF 1.11MB
By: Uli Jakob (Green Chiller Association for Sorption Cooling e.V)
Editor: Stephen D. White (CSIRO)
Publisher: Daniel Mugnier (TECSOL SA)
The work within the subtask C “Market support measures” is related to create a panel of measures to support the solar cooling market. These measures will use the results of Subtasks A “Quality procedure on component level” and B “Quality procedure on system level” and will above all explore the possibilities to identify, rate and verify the quality and performance of solar cooling solutions. The resulting tools are intended to provide a framework that will enable policy makers to craft suitable interventions (e.g. certificates, label and contracting etc.) that will support solar cooling on a level playing field with other renewable energy technologies. Even if the completion of these tools will not be achieved rapidly, the subtask should permit to initiate all and maybe conclude some of them.

From the past and present experience with labelling of solar systems (e.g. Solar Keymark, Blauer Engel, etc.) or “Green quality” labels such as LEED or Green Building Council tools, within the framework of Activity C5 “Labelling possibilities investigation”, existing labels as well as different standards for solar cooling and sorption heat pumps were investigated to create a Solar cooling label itself or (more probable) a specific Solar cooling extension(s) to the existing labels. This activity has mainly exploratory and firstly make a full state of the art of the labelling process, which could welcome the solar cooling technology on their scope. From these information’s, investigations on how to integrate them or even how to create an independent Solar Cooling Label were investigated and theorized if accurate.
Final report on Contracting Models for Solar Thermally Driven Cooling and Heating Systems Final report on Contracting Models for Solar Thermally Driven Cooling and Heating Systems
Task 48 - C6 activity final report
September 2014 - PDF 1.99MB
By: Moritz Schubert & Sabine Putz, S.O.L.I.D. Gesellschaft für Solarinstallation und Design mbH (
Editor: Daniel Mugnier
The IEA Task 48 focuses on projects which make solar thermally driven heating and cooling systems at the same time more efficient, reliable and cost competitive. Within the four subtasks, quality procedures on component levels, quality procedures on system levels, market support measures and dissemination and policy advices were elaborated.

This Subtask C6 report´s activity will emphasize contracting models for solar cooling systems. For that purpose, a narrow collaboration was established with ongoing IEA SHC Task 45 on large systems for district heating and cooling systems.

This analysis focuses on details, such as investment models, contracts and other relevant issues with regard to which information on ESCos is limited and dispersed in the EU and worldwide. The work will also deepen our understanding of hurdles which ESCos are faced with and will provide information on ways of overcoming such hurdles in practice.

Solar thermal technology is defined as a technology used to harness energy from the sun for use in a thermal process. There are a wide variety of applications for this technology, including, but not limited to, water/process heating, radiant heating and air conditioning. In each application, solar energy is obtained through a solar collector and transferred to a thermal process. Given the proper conditions and system design, solar thermal technology can provide a reliable and cost-effective energy source in residential, commercial, and industrial applications.

In the field of solar air conditioning, an exponential increase of activities occurred during the last years. Some solar cooling systems are available at small scale, starting at approx. 15 kW. Below this figure a lot of research was done to achieve satisfactory results in regard of the systems´ thermal efficiency. Most solar cooling installations were realized in the scale between 15 kW and 500 kW, being perfectly suitable for all buildings that have a continuous and regular load profile (e.g. public buildings, offices, hospitals…). Since 2011, there are also solar thermal cooling systems with cooling powers beyond 1 Megawatt in operation, like in Singapore and the USA. These systems were the first solar cooling systems based on ESCo financing models.

Solar collectors for air conditioning of buildings are generally also used for other applications, such as space heating and domestic hot water preparation. Latter usually contributes to a reduced payback time of the investment. The technologies of concentrating solar cooling applications as well as the technology of solar flat plate cooling applications have their specific advantages or disadvantages in each case, depending on location and application characteristics. Components have to be carefully selected and developed through an integrated design approach to become a functional system.

ESCos for solar thermal air conditioning are in many cases a competitive energy service concept to execute energy efficiency projects in buildings or production facilities. Further work will be done in the IEA SHC Task 48 and other projects to make this financial service more competitive and superior to other products
Final report Measurement and Verification Procedures Final report Measurement and Verification Procedures
Task 48 C4 Final report
January 2013 - PDF 3.44MB
By: Francois Boudéhenn, Stuart Hands, Stephen White, Christian Zahler & Farah Gammoh
Editor: Francois Boudéhenn
While Measurement & Verification (M&V) procedures (e.g. IPMVP, ASHRAE and FEMP) exist for general energy conservation measures, it is desirable to have a more specific and targeted guide for solar cooling in order to simplify procedures, improve confidence in results and to assist M&V implementation with more detailed guidance. The resulting in-situ and ex-situ measurement procedures have been written up as a document suitable for submission as a draft standard.
The present final deliverable is a monitoring procedure and a draft standard integrating the following aspects:
- Presentation of a generic scheme for solar cooling installations;
- Definition of one (or two maximum) performance indicators, with associated calculation method applied to the generic scheme;
- Prescription of the sensors required (position, technologies, …) in order to obtain the needed information for calculating the performance indicator(s);
- Definition of the analysis method for reporting the performance and quality of the installation.
Review of relevant international standards rating and incentive schemes Review of relevant international standards rating and incentive schemes
Task48 - Activity C1 Final Report
January 2013 - PDF 1.43MB
By: Daniel Rowe, Dr. Stephen White, Daniel Mugnier and Khalid Nagidi
Editor: Daniel Rowe
A large number of government incentive programmes and industry development programmes have
been instituted in different jurisdictions, to assist the renewable energy and building energy efficiency
industries. These programmes call up procedures for quantifying benefits, rating effectiveness
and achieving robust measurement and verification.
A database of relevant standards, processes and incentives has been created and links to the needs of the solar heating and cooling industry have been analysed.