18 07, 2019

By |2019-08-29T10:43:11+02:00July 18th, 2019|

Energiesprong is a new refurbishment standard originated in the Netherlands to massify high-performance energy refurbishments, starting with the social housing stock. The principle: long term guaranteed net zero energy and high quality and comfort refurbishment (up to 30 years), with a minimum disruption for tenants thanks to the off-site construction of large components, and an overtinvesment being financed by the money saved on energy bills and maintenance. Highly insulated walls, roofs with integrated solar panels and other large components are made off-site, which allows whole-house retrofits to be done quickly and with minimum disruption to tenants. Real-life performance for energy use and indoor comfort is guaranteed for up to 30 years. Within the E=0 project, funded by Interreg North-West Europe, Vilogia, a social housing association, tested the EnergieSprong approach for the first time in France on 10 individual houses in Hem (59) to demonstrate the replicability of the project. These houses are typical northern brick houses with two floors and four rooms built in 1952, with an initial energy performance of E. This first French refurbishment comes with a 25-years performance warranty on the energy performance. The retrofit was non-intrusive (pre-fabricated facades, new roof with solar panels, new installations e.g. floor and heating plant), esthetic and completed within six weeks, and without the resident needing to move out. Moreover, tenants also enjoy new refurbished kitchen and bathroom, and will have access to a monitoring device and coaching to master their energy consumption. In this case, the total consumption after work is of 74 kWh/m²/y and the renewable energy production of 75 kWh/m²/y, leading to a final energy consumption of -1 KWh/m²/an.

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1 07, 2019

By |2019-08-12T18:12:59+02:00July 1st, 2019|

The GAP solutions is a complete solution developed around three core business, GAP Engineering, Gap systems and GAP Services. GAP1 engineering GAP1 engineering stands for close collaboration of architects, planners and executors as well as for the careful coordination of building-physical and energetic conditions. GAP engineers are the competent interlocutors that accompanies the client through all realization phases, from conception to implementation. This combination ensures integrated processes and smooth work flows. Based on a comprehensive collection of facts, an energy-optimized construction and management concept are developed in order to be implemented precisely and efficiently. In doing so, solid craftsmanship is combined with industrial production and the special GAP system. GAP2 Systems The intelligent GAP facade solutions practically don't allow any heat loss - the interaction of light, wood and air eliminate thermal bridges and increases the hygrothermal and acoustic comfort. The GAP system has been developed in collaboration with leading universities and research institutions and extensively tested. The optimized house envelope also allows for optimization of the house technology. Simple and decentralized systems are cost effective in investment and maintenance. The coordinated complete system consisting of facade and building technology sets economical and ecological standards. Based on the interaction of the components, GAP2 systems focuses on sustainability and renewable energy.
  • GAP Skin
The building is enclosed by a tempered air cushion - This buffer zone is a climate regulator and ensures a pleasant room climate during all seasons. First grade materials ensure long-term quality. GAP glass facades are durable and weatherproof, allowing a drastical reduction of maintenance and operating costs. The evenly warm facade, which is also open to vapour diffusion, ensures mould-free rooms and balances out thermal faults in the building envelope. It is composed as follows:
  • Wood construction + insulating material : ≥ 60 mm
  • Framework wall in solid wood+ insulating material : 151 mm
  • Wood panel (DFP): 19 mm
  • GAP-Honeycomb panel in cellulose. 30 mm
  • Air gap (slightly ventilated): 29 mm
  • ESG float glass panel: 6 mm
  • Attaching parts in aluminium
  • GAP Air
GAP Air is a decentralized ventilmation system based on heat recovery. The ventilation element is embedded in the facade; customized object solutions are also provided. The cost benefit compared with central systems is up to 60% depending on the construction. Independent of central building technology, hygienic and easy to service, they require no regulation expenditure.  
  • GAP water
Based on individual project requirements, GAP:water offers customized solutions for hot-water generation and heat recovery. The main principle is the prevention of energy loss. The supply is provided by the facade, at maximum decentralization. GAP:water uses existing waste water heat and focuses on eliminating long lines resulting in heat loss. Based on individual requirements, concrete storage absorbers, loss-free hot-water distribution, heat recovery and photovoltaic are combined. Maintenance-free and requires no regulation expenditure.   GAP3 Services Finally, the implementation of the solutions, including installation – and throughout the entire utilization cycle is ensured. Production, machines and installation are provided. Industrial production and installations guarantee efficiency, precision and safety of systems and operations. Source ©GAP Solutions GmbH

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28 06, 2019

By |2019-08-27T16:20:46+02:00June 28th, 2019|

The renovation of the Dieselweg residential area, located in the south of Graz (Austria) was supported by the Austrian system of public housing aid, by additional research funds and by a special support of the governor of environmental affairs of Styria and by the non-profit organization of the GIWOG corporation. Due to the fact that since the time of construction (1960s) no improvement measures have been carried out, the building stock showed a very energy inefficient and poor situation, with high heating costs and low quality thermal comfort and living. At this showcase project for the high-performance renovation of a large-volume residential building, the passive house standard was achieved and the heating costs significantly decreased. CO2 emissions were also reduced by the use of renewable energy sources, e.g. solar thermal energy. Prefabricated large-scale façade modules with integrated windows and ventilation systems were used. In this way, an essential increase of the thermal and user comfort was achieved and the indoor environment was improved.

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31 05, 2019

By |2019-07-03T15:02:05+02:00May 31st, 2019|

BRESAER developed an innovative, cost-effective, adaptable and industrialized “envelope system” for buildings refurbishment. The whole system corresponds to turnkey retrofitting solution that is active, modular, customizable and adaptable to any building and climate from a portfolio of BRESAER components. The BRESAER’s envelope (for façades and roofs) includes a combination of active and passive pre-fabricated solutions which can be integrated in a versatile lightweight structural mesh for reducing drastically the primary energy and the Greenhouse emissions while improving indoor environment quality (IEQ).   With the BRESAER system, the whole building can be governed by a cutting-edge Building Energy Management System (BEMS) , which manage all the different envelope functions, the energy facilities of the building and monitor the energy generated by the BRESAER system. The integrated system cannot be determined ex ante as there is several solutions depending on local conditions and engineering expertise.   BREASER constructive system is based on a lightweight structural mesh where there are placed passive and active components. This mesh is made from metallic profiles to achieve a standardized constructive system easily to assembly and configurable. The technological components are fixed to the BRESAER profiles with a common solution to achieve a real standardized system allowing very easy and fast installation and also removal in case of maintenance or replacement.   Several extra-characteristics can be assigned to the whole solution:
  • Easy assembly and disassembly to reduce on-site work and maintenance. The claddings can be interchanged and upgraded easily during the building life.
  • Adaptable to a wide range of buildings and climate, even buildings with specific features thanks to the adjustable dimensions of the panels (a photogrammetry is required to adjust the dimensions).
  • Aesthetical advantage: any kind of design can be addressed.
  • Industrialised solution to reduce costs.
  • User-centred and user-friendly.
Active and passive pre-fabricated solutions integrated into a versatile lightweight structural mesh. (©BRESAER) The ventilated facade system is a commercial product similar to many existing systems but with a polymer concrete panel that offers high resistance and an option of finishes (©ULMA)       Example of the integrated solution including (1) multifunctional and multilayer insulation panels, (2) solar thermal air envelope, (3) multifunctional lightweight ventilated façade modules and (4) dynamic automated windows (©BRESAER)
  Interaction of the Bulding Energy Management System with building facilitie ©CARTIF   A few images of the flowsheet generated by the BRESAER design tool (mounting of Multifunctional insulation panels and ventilated façade modules) ©TNO

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24 05, 2019

By |2019-05-24T08:59:03+02:00May 24th, 2019|

The objective of this section of the Renovation Hub is to present the variety of Business Models that already exist to finance energy renovation, guide you in this large collection to find those that are the most adapted to your needs, provide recommendations for replication, and illustrate the application of most promising ones through Business Cases.  
Today’s measured rate of refurbishment is much lower than what should be observed to remain in line with Europe 2050 ambitions. There is a need to accelerate the market uptake and large-scale implementation of energy efficient refurbishment solutions to bring the renovation level to 3% per year until 2030. The poor market acceptance of innovative and adaptable refurbishment solutions is in most cases due to the fact that these solutions are not associated to an adequate business model. Innovating on the technological side is not enough: there is also a need to innovate on the business side. Innovative business models have already been demonstrated and validated, but their replication is very slow: how can this replication be supported?
The following business models will be presented:

Business models based on One Stop Shop (OSS) concept

Business models based on Product Service Systems (PSS) - Energy Service Companies (ESCO)

Business models based on new and innovative revenue models

Business models based on new financing schemes

Each Business Model presentation is structured in four blocks: What? Who? How? Why?

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24 05, 2019

By |2019-07-19T12:27:46+02:00May 24th, 2019|

The Enhanced Energy Performance Contracting (EPC) model, proposed by NOVICE project, consists to generate revenues from Energy Savings, as in the classic EPC model, but also to generate revenues from Demand Response Services. Demand response is a way of shifting or reducing electricity usage during peak periods. Indeed, when electricity demand exceeds supply on the grid, clients’ electrical asset consumption can be adjusted by using aggregator technology. Thanks to this shift, power returns to the grid and the supply and demand balance is restored in a cost effective and green way. Also, the clients earn revenues simply for participating and being available. In the Enhanced EPC model, the ESCOs remain the single point of contact for all measures but uses the services of a demand response aggregator to provide services to the grid. A Memorandum of Understanding (MoU) governs the relationship between ESCO and Aggregator. Market readiness for Enhanced EPC is varying across European countries. Some of them, like France or UK, have well developed or growing ESCO markets and several open DR markets with regulation that encourages aggregators to participate. Other countries (Belgium, Germany, Finland…) have either an advanced ESCO or an open DR market but strict regulations that limit the ability of aggregators to participate. Finally, some EU countries like Italy or Spain have immature ESCO and closed DR markets (or do not legally allow aggregation).

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