This pilot action’s building is a public building and has a mixed-use; Part of it hosts the Municipality’s administration spaces and offices.

After the first monitoring with EXTECH PQ 3450 energy analyser was performed in June 2019 (RP1), an Energy Simulation using Sketchup/ Open Studio and Energy+ solver was started, however, the complexity of the building’s architecture, and the erratic usage of the building, deemed the simulation inappropriate at the time and was replaced by an onsite full energy audit which was finalised when the pandemic set in in the next months (the required onsite data was acquired prior to lockdowns).

The Energy Audit/ Review was used to verify the measures initially proposed and, ultimately, generate the Energy Performance Indicators for the ongoing certification of the Municipality with ISO 50001 – Energy Management System (expected in January 2022). The Inspection was carried out and the Inspection Report was received and corrective actions were implemented on the systems by the Municipal Technicians.

Additionally, CEA prepared the tenders for works such as 10kW Photovoltaic Systems Supply and Installation. Despite the particular system’s capacity being a fraction of the initially proposed capacity, it was only submitted for Request of Quotation. in the end, the procedure was put on hold and never reactivated. The Municipal contact person will re-examine the case in the near future to invest in higher capacity system.

As related to the residential pilots, the approach followed was to initially carry out a visual inspection along with a questionnaire about the inhabitant experience, issue the state-of-the-art EPC prior to upgrades, propose the most cost optimal measures for the minimum required expenditure of 10k euros according to Cyprus Energy Agency expertise and finally issue the EPC after works.

For Residency No.1,  and No. 4 onsite visits were made to detect the needed upgrades and works performed, while the remaining residential participants have not proceeded with further actions.

As for Living Labs, and Project Results’ Exploitation and Dissemination events, CEA organised an online Meeting with the Municipal Tender Committee (Horizontal LL) in M35, an online Living Lab/ Incubator with Policy Makers, and an Incubator/ Dissemination event for Clients, Policy Makers and Professionals. The total number of participants was 40 persons, from target groups such as building owners (HAPPEN participants), end users, solution providers (contractors), technological solution providers, scientific community, policy makers /local authorities and civil society.

The Conclusions drawn from both Pilot categories (Municipal and Residential) in regards to convincing clients or other interested parties to undertake deep renovation is extremely difficult unless:

1. They have already decided on their own that they need an energy upgrade.
2. They are required by the legal framework.
3. The funding is extremely beneficial especially coming from governmental grants.

More specifically, at the Municipal level, bureaucracy and politics are a great barrier that no Living Lab or showcase of technical benefits can overcome. As mentioned, for the residential participants, the local incentive provided by the Municipality which provided 20% funding, free issuance of EPC prior and after renovations, general consultation and discounted VAT was not regarded as attractive by the public.

The two Residential Pilots that were on-board and had their homes renovated, were very satisfied with the overall process. In the case of participant No.1 that conducted the most extensive renovation, the whole neighbourhood was impressed and interested in details which potentially can spark a renovation wave.

The Pilot included the Strovolos Municipal Council Building and 4 private residential houses. No construction works were carried out neither at the Municipal Town Hall nor in two of the residential buildings. The other 2 residential buildings had undergone extended retrofits during the first phase of the project.

EVHA’s pilot action targeted two different groups of dwellings: those with social aims and a smaller one (less than 10% in total) as a part of the dwelling market with subsidies; Those two housing stocks belong to the regional government (Generalitat Valenciana) or directly to EVHA’s own assets. The Santa Cruz de Tenerife refurbishment covers one of the second group of buildings, with less social assistance required and a higher possibility of participation from the tenants.

Due to its proposal for innovative, optimal solutions, Castellón Pilot is an executive landmark. However, the work has been delayed and it will start in the first semester of 2022. Castellón Pilot represents a new, possible way to develop dwelling assistance in the region, but especially the best way to make more energy-efficient the existing buildings, raise people’s standard of life and make them pay less for their bills as well. The outstanding example of the La Taula group of associations in San Lorenzo, taking part as the urban environment slope of HAPPEN pilot in Castellón, is the best reference to develop a complete training of the future Santa Cruz tenants in this process.

The works’ project foresees the complete refurbishment of the building after demolishing every element except the structure. The main goal of the intervention is the implementation of a series of innovative constructive solutions in order to achieve the 60% energy savings in reference to the former construction.

EVHA, in collaboration with IVE (the other Valencian research partner in HAPPEN), has developed a total of 10 Living Labs to disseminate HAPPEN’s key results, mainly in the middle of the San Lorenzo social structure. Other specific meetings in the education, university, or professional sectors were held at IVE HQ.

The design and procurement phases are complete, the retrofitting works are likely to start in the first half of 2022. At the end of the Project, the targets expected by our pilot are to reach 60% of energy saving after deep renovation of the building located in Santa Cruz de Tenerife.

The business nature of H&DF's core activities entails their main focus and scope of action is a communicative, networking, administrative, and guarantee relationship. However, H&DF is involved in the technical aspects of the retrofitting themselves, not on a management level but rather in the monitoring of the correct performance of the retrofitting and in the fiscal administration.

The pilot action under H&DF’s responsibility included 3 condominiums located in the Milan metropolitan area + 2 condominiums located in different provinces:

1)    Condominium in Via Cogne 5- 3, Milano: multi-family house, built in 1960; 30 dwellings for a total surface of of 1338 m²;

2)    Condominium Via Poliziano 15, Milano: multi-family house, built in 1930; 27 dwellings for a total surface of 1669 m²;

3)    Condominium “La Riscossa”, Via Pirandello 4, Cologno Monzese (MI): multi-family house, built in 1979; 42 dwellings for a total surface of 3222 m²;

4)    Condominium “Giacomo II”, Via Chiosi 77, Esine (BS): multi-family house, 6 dwellings for a total surface of 540 m²;

1)    Condominium “La Fortuna”, Via Leonardo da Vinci, Torre Boldone (BG9: multi-family house, built in 1980; 30 dwellings for a total surface of 2486 m².

Overall, the Packages of Optimal Solutions have been applied to the pilot buildings, in some cases completely, in others only a part of the steps foreseen by the MedZEB approach, which will be completed in the period following the conclusion of the projects.

The interventions carried out, in either case, have allowed for all buildings the achievement of the minimum target of 60% reduction in energy consumption, suggesting a potential for reducing energy consumption even higher than 60% in the case of finalisation of all the steps of the envisaged POS (in a single solution or in several steps deferred over time).

The objectives for the First Level Impacts set for the Frontrunner Pilot in Milan were met in almost all aspects, significantly exceeding the objectives set in the main indicators.

As for Second-Level Impacts, a further increase of minimum 10% is expected in most of the indicators presented in the Amended Impacts Table, as a combined effect of the buildings involved in the Project that delayed the construction works to the years following the conclusion of the Project, the engagements activities (LL sessions, trainings, and dissemination events) carried out by H&D and the effect of the fiscal incentives available at national level (Superbonus 110% and reduced bonuses after its duration) that will continue to act as a lever for the expansion of second-level impacts.

As far as Living Lab activities are concerned, 4 LL Sessions were carried out:

PHASE A: Horizontal Living Labs

Session 1 (01/12/2020 – M33) c/o Condominio Via Ercole Marelli 95, Sesto San Giovanni (MI) (face to face meeting)

Session 2 (10/03/2021 – M36) c/o Condominio Via Ercole Marelli 95, Sesto San Giovanni (MI) (face to face meeting)

PHASE B+C: Happen Digital Incubators (Training)

Session 1 (26/10/2021 – M43): Training with H&DC’s network’s Professionals (online meeting)

Session 2 (29/11/2021 – M44): Training Session combined with dissemination event with CNI (National Engineers’ Council, Italy) (online meeting)

The two additional Horizontal sessions were motivated by the necessity of engaging the inhabitants of the condominium at Via Ercole Marelli 95, Sesto San Giovanni (MI), potential pilot building identified, in order to present them the HAPPEN Project, the MedZEB approach, and the technical and financial framework of the solutions proposed in order to promote their adherence to the HAPPEN methodology for the deep retrofitting already set to be performed on the building.

The Professionals reached with Phase B+C of LLs were redirected to the HAPPEN Platform for the registration and subscription to the MedZEBinars training course. The effect included a high visibility gain for the Project and influx of professionals registered on the HAPPEN Platform, starting from the beginning of M45 and set to continue increasing.

The sessions carried out have contributed a total duration of 12h, the engagement of stakeholders belonging to the Clients, Professionals and Influencers Target Groups and a total of 1485 participants, apart from training personnel of H&DC and other Project Partners.

The buildings, originally foreseen by the Italian Pilot have been modified various time: the initial buildings have decided to postpone the deep retrofit interventions, so other six buildings were involved in the project activities. Either their building managers or the designers or the construction companies were involved in the Living Labs developed for the initial ones so the approach was applied also for those new buildings. Finally, also one these six buildings decided to postpones the works, so only the results from the other five buildings were taken into account for the Milan Impacts, and their results are all referred to completed works.

The pilot building Brezno represents one of the typical residential buildings from the '60 (total floor area 350 m²). It has 6 dwellings on three floors, with a combined conditioned area of 292 m². In technological terms, the building is a typical representative of residential blocks of flats as constructed in the post WW2 period in Slovenia, and, therefore, it exhibits large energy saving potential and deep renovation opportunity.

GI ZRMK, together with the building owner Housing Fund of Republic of Slovenia (SSRS) prepared and performed all the activities and processes needed for the deep energy renovation. The aim of the deep renovation was to improve the energy balance (reduce energy consumption), to optimise building operating systems and to improve indoor climate. All financial costs regarding the deep renovation were fully covered by the owner. Throughout the project, GI ZRMK offered all the necessary professional help needed to design and implement the energy renovation works and supported the renovation process with HAPPEN project tools.

In March 2020, GI ZRMK performed the monitoring of the indoor thermal comfort (temperature and relative humidity) in a typical apartment (monitoring campaign). The monitoring protocol was performed with the Tinytag data loggers. A comparison of the EPC before and after deep renovation was done in order to monitor the potential energy savings. Thereafter, GI ZRMK prepared a feasibility study and preliminary design based on the PHPP calculations.  PHPP tool was used for comparing 40 different renovation options, in which GI ZRMK used the representative city for the W3S1 climate zone (as described in the WP3). The Life Cycle Cost analysis was calculated for all 40 different variants. Based on the LCC results, the building owner decided which refurbishment option is the most appropriate for the Brezno pilot and had them included in the executive design.

Due to the COVID-19 epidemic the owner was forced to a financial restructuring, which consequently led to division of the deep energy renovation into two steps. While the first step was completed by October 2021, the second one is planned to be done in 2022 (tendering procedure has been completed completed).

The result of the energy renovation in step 1 revealed an energy reduction of 55% (61 MWh). According to the energy simulation, with the finalisation of the step 2 of the deep energy renovation it is expected to achieve 68% of energy reduction (76 MWh).

The final energy simulation (based on which the EPC was prepared) was obtained with a calculation tool according to the national methodology (PURES).

GI ZRMK has organised 12 living labs (2 horizontal LLs, 4 vertical LLs, 1 final horizontal Lab session, 4 incubators and 1 final dissemination event); the majority was performed in person while some of them online.

The final dissemination event was organised on 19 November 2021 (https://cutt.ly/lY0gsRe); due to the epidemic situation it was held online. This event combined a HAPPEN incubator and as well final dissemination event. Therefore, it was dedicated to housing funds, building managers, apartment owners, local energy agencies, energy consultants, designers, manufacturers, service providers and other stakeholders involved in the renovation of buildings.

The Building owner, SSRS, chose the construction company who carried out the construction works via public procurement since they are obliged by legislation to this procedure. The executive design was also prepared by the owner, but with the help and cooperation of ZRMK. The complete renovation process was fully funded by the owner following the Happen MedZeb approach. The works are completed.

IRENA has managed two TP pilot actions.

The first is a Kindergarten building, consisting of two parts (original part built in 1971, newer part built in 2021) with a respective net usable surface area of 1.065 m²  + 623,20 m².

The City of Buzet, issued a public call for the construction and craft works in August of 2019 and finalised in November 2019; the selected contractor was ‘Ekspert Gradnja Ltd’. The construction phase of the new kindergarten building was started in December 2019 and finalised in January 2021. The original and the new part of the kindergarten are connected with a glazed hallway and the new building has been operational and inhabited from February 2021.

The impact savings include both the original and the new building since they are regarded as a single interconnected functional unit and also because a part of the savings of the new building is directly dependent on the construction works done on the original building. The last phase of the works is being planned in the future when additional funds will be secured.

The second pilot action (as per project Amendment) targeted the residential houses in Raša belonging to the so-called local typologies “Vileta” and “Kazakapa”. This pilot actions suffered from relevant delays due to lack of cooperation of the stakeholders involved in the works. Therefore, in May 2021, IRENA launched a new public call for the development of the designs. In June 2021, after the closure of the public call, the three new target buildings were selected in order to satisfy the impact requirements set by the HAPPEN project: one in Raša settlement and two in Koromačno settlement. The former, in Raša, is a multifamily residential building consisting of 4 dwellings with a total of 270 m² of surface area, it was built between 1938 and 1939 and is classified as type K (Kazakapa). The two buildings in Koromačno are also multifamily residential buildings consisting of 4 dwellings with a total of 220 m²and 222,38 m² of surface area, they were built in 1948 and are classified as “Viletas” type 1 and 2 (typology defined by IRENA to easier distinguish them). After that, procurement procedure for the development of project documentation was issued in July 2021, subcontracting was signed in September 2021, and the end of works (project documentation) was foreseen by the end of 2021.

As a significant number of detected stakeholders were interested to follow both pilot actions, IRENA decided to merge LL activities into one LL whenever possible. In this reporting period, 14 living lab sessions were organised.

The building was proposed by the City of Buzet as the Thematic/Perspective building to be used during the HAPPEN project. Previous refurbishments were done in 2012, additional work was conducted in 2015 by IRENA and Istria County through EU project Alterenergy (IPA-Adriatic-CBC). Two main interventions were introduced during the HAPPEN project: development of upgraded thermo-technical and electric installation system, upscaling of heat pumps primary circuit via addition of separate borehole circuit to be used as an independent heat dump source to create synergies between various RES – geothermal and solar.

The procurement for technical designs was completed in December 2018 with designs being completed in February 2019. The construction works were completed the beginning of 2021 and the building was inhabited since February 2021.

Two residential houses were selected on the basis of their cultural heritage and unique history and of the specific typologies of buildings constructed in Raša Municipality and Labin town. Procurement procedure for the development of project documentation was issued and it was based on technical requirements linked to the Happen approach. The construction works will take place in 2022.

The Athens University Museum, is housed in the "Cleanthes Residence" or "Old University" building in the Plaka neighbourhood, one of the most famous parts of the historic centre of Athens. It is a 3-storey building with total surface of 830 m².

A deep energy retrofitting plan has been developed by the Technical Service of the University of Athens. Initial interventions will lead to an energy saving target of approximately 30% for the specific building. All actions are being implemented by licensing of the Ministry of Culture. Simulations for different energy consumption scenarios will be carried out in order to achieve at least 60% of energy savings, in order to fully comply with HAPPEN targets. However, funding resources for the construction works have been stalled by the Ministry of Education of Greece due to COVID-19 pandemic.

Measurements of Indoor Environmental Quality (IEQ) within the building, initiated in February 2019, are still on-going. In the frame of the aforementioned experimental procedure, a scientific paper was released by NKUA (28.10.2021), disseminating the scopes of the HAPPEN Project.

In order to evaluate the pilot building performance before and after the interventions, a thermal simulation procedure has been developed. A baseline thermal energy building model was developed with EnergyPlus and Openstudio software. The procedure includes the assessment of a base-as built scenario of the building before the interventions and different retrofit scenarios in order to determine the expected annual energy and thermal performance. Comparison of the simulation and actual monitoring results will be also performed. The first phase of the base case scenario has been completed.

NKUA organised 2 online Living Labs (due to COVID-19 pandemic restrictions):

• The training session was organised in collaboration with AEGEA, it gathered 16 participants from 3 Target Groups. More precisely, 2 Policy makers, 5 Technological SPs (Professional/technicians in relating fields to energy efficiency and building refurbishment), 9 Designing SPs (Architects, Civil Engineers, Electrical & Mechanical Engineers). In this session, the Key Exploitable Results of the project were presented and discussed.
• The final dissemination event, organised in collaboration with AEGEA, was held on 13 December 2021.The main concept of this event was, on one hand, to present the general results of the project, and, on the other hand, to disseminate the results and lessons learnt from the Greek Pilot buildings.

Executive designs have been completed concerning retrofitting actions and more specifically the installation of a new lighting system (LED) approaching the standards of natural light and installation of a heat pump (fan coils) system that will improve the existing heating and cooling system (AC split units). The funding resources for the implementation of the retrofitting works have been stalled by the Ministry of Education of Greece due to COVID-19 pandemic. The Technical Service of NKUA along with the Board of the University, from early 2021, have prepared a new proposal in order to include the retrofitting of the Museum in a new Investment Program financed by both the Greek General Secretariat for Public Investment and the EU, the financial resources needed for the implementation of the construction works will be secured and the works will start in the near future.

The expectation for this twofold pilot action is to emerge as a best practice on deep retrofitting for municipal touristic buildings, replicable in other island areas. There is a high interest from different stakeholders’ groups in replicating the retrofitting measures used, especially through the support of the tools available on HAPPEN Platform.

Due to unforeseen difficulties in financing the renovation works, the intervention did not start yet and, currently, alternative financing means are being considered and examined. There are differentiations between the foreseen impact and those after the executive design regarding the cumulative investment that changed after the closer examination of the both pilots’ needs and the use of energy monitoring systems. The energy related impacts are not expected to diverge from the foreseen, as they are based on different studies and the monitoring of the direct energy consumption of the pilots.

The completion of the construction of the project is predicted to take place towards the end of 2022/ beginning of 2023 as long as the Municipality proceeds to the project submission to an open call for funding.

During the project duration, besides carefully planning the steps towards the implementation of the retrofitting works, AEGEA actively worked for triggering their financing.

AEGEA implemented in total 3 Living Lab sessions – 1 horizontal training and 2 vertical trainings – for each of their pilots (Lefkes and Nisyros Polyvotis); in both cases, the last (horizontal) one was organised in RP2, but could not be done in presence due to Covid19 restrictions.

Moreover, in cooperation with NKUA, AEGEA organised a final dissemination event on 13 December 2021.

The renovation actions are based on a holistic renovation scheme using the POS toolkit and the HAPPEN programme results and include: solar panels for DHW and for heating (combined with HP); windows and doors replacement; photovoltaic system installation (Net Metering); Building Management System (BMS); Roof Thermal Insulation and Waterproofing; Passive/ Active Shading Solutions; Room Energy Management Systems (e-locks, detectors, sensors).

Euroméditerranée operates on a perimeter of 480 hectares in the centre of Marseille, thus giving life to the largest urban regeneration project in a city centre in Europe. Within his wide project, two industrial factories and three residential buildings located in the Les Crottes neighbourhood - a historical though extremely degraded neighbourhood - have been selected to be regenerated according to the HAPPEN approach.

As for the industrial buildings, Kaïs is a typical Marseilles from the 19th century, made of 3 buildings with different functions (residential and non-residential), the total surface of the building is 2900 m²; Romieu is an old factory from the 19th century consisting of 3 buildings as well; The total surface of the building is 4500 m².

A call for proposals to undertake the retrofitting work on these buildings was launched in 2019;  Euroméditerranée received six applications, among which the best two were selected.

In December 2020, both selected architectural agencies presented their final offers to Euroméditerranée. In early 2021, the group – represented by the real estate strategy consulting company CAPTOWN and made up of the street art company Maquis-art, the Monchecourt & Co agency (heritage architect), the specialist in urban renovation and rehabilitation Histoire & Patrimoine (Altarea group) and the Etamine design office (sustainable development) – won this call for projects, thus becoming the new responsible of the renovation works of the two industrial buildings.

During RP2, the winning group and Euroméditerranée met several times to ensure that the project is in accordance with the requirements and to ensure the support of local politicians; nine meetings have been held, including two at the political level. EPAEM and the group are still working together on the renovation project development.

The construction permit is expected to be deposited by mid-year 2022 and the works to occur between 2024 and 2025.

As for the targeted residential buildings, it come down to five traditional residential houses built at the end of 19th century; Each has either 2 or 3 storeys and the total surface area is 1086 m².

The work on residential buildings is expected to start in 2022 and to be completed by 2025.

Besides the meetings at the political level organised by Euroméditerranée, where, among others, the results of the HAPPEN project and its tools were presented, a dissemination event for the general public and solutions providers was organised on 9 December 2021 where the HAPPEN project and MedZEB Protocol were presented along with the concrete application of the Project approach to the Les Crottes Pilot. This session gathered 26 participants and was recorded with the objective of being disseminated online to reach a wider audience. Finally, a total of 6 MedZEBinars were produced in French to be disseminated online.

The activities in Marseille were referred to 2 different building categories: two former industrial buildings, five residential buildings.

The first group of industrial buildings was subject to a deep renovation design, selected through a call for proposals managed by Euroméditerranée so that the entire process could complying with the Happen MedZeb approach.

The second group of residential buildings were subject to preliminary studies on the buildings that led to a business plan of intervention by La Foncière Logement within an agreement with Euroméditerranée. The agreement was related to a wider area and included a specific reference to the adoption of the Happen MedZeb approach for urban transformation actions on the entire neighbourhood. The works on residential buildings are expected to start in 2022 and to be completed by 2025.