Whole retrofit offers: projects & initiatives in Europe

Transcription

1 Whole retrofit offers: projects & initiatives in Europe Offres de rénovation globale : projets et initiatives en Europe Han Vandevyvere, Unit Smart Energy & Built Environment

2 Intro/the basics: Thuisbaas ( Home Boss ) Marjan Minnesma / Urgenda (NL) - Zero on the meter renovations on a yearly basis Target: max Euro investment or the 15 years average energy spending of a Dutch household

3 Thuisbaas ( Home Boss ): it can be done if you want it! 4 PV 260 Wp + 10 PVT Heat pump 7,5 kw Hot water tank 500 l Instant el. water heater Low T convector Accessories

4 Thuisbaas ( Home Boss ): it can be done if you want it! 2 PV 265 Wp 1 Pellet stove Instant el. water heater Infrared heating panel Accessories

5 Thuisbaas ( Home Boss ): it can be done if you want it! 23 PV 160 Wp Heat pump 8 kw + acc. Infrared heating panel Infrared cooking plate

6 Thuisbaas ( Home Boss ): it can be done if you want it!

7 Challenge: the energy-equation Energy-Efficiency vs. Renewable Energy Production?

8 Challenge: the energy-equation Climate action plan Roeselare (BE)

9 Challenge: the energy-equation Daily & seasonal balancing challenge TIMES model partial analysis Climate action plan Roeselare (BE)

10 Challenge: the energy-equation Rennovates (see further)

11 THREE PROJECTS RENNOVATES / ECOREN / REFURB

12 Systemic holistic deep retrofit Project co-funded by the European Commission in the H2020 Programme.

13 DEMONSTRATORS: NL / ES / PL Rennovates is a holistic systemic deep renovation concept using smart services and developing smart energy-based communities resulting in energy-neutral housing up to and beyond Zero Net Energy by reducing energy consumption and maximizing the use of renewable energy. Rennovates is following the USEF framework. The Universal Smart Energy Framework (USEF) is an international common standard that ensures smart energy technologies and projects are connectable at lowest cost. Its component parts enable the commoditization and market trading of flexible energy use and specify all stakeholder roles (new and existing), how they interact and how they can benefit by doing so. More info:

14 DEMONSTRATORS: NL / ES / PL 70 houses in neighbourhood de Eng, Soesterberg Social housing corporation Portaal owns the houses involved Built Brick facade, small uninsulated cavity Uninsulated hollow brick ground floor Wooden uninsulated upper floors Wood structure roof, angle of 30 0 with roof tiles Total retrofit Principle: equal housing OPEX (rent increase equals energy savings under specific guarantee conditions applying Dutch energy performance fee regulation) Within Stroomversnelling programme / BAM project series

15 Insulating envelope (shell) Pre-fab, 3-day construction period inhabitants stay in their dwelling High end insulating materials (60% energy savings) Solar panels Smart energy software and a district battery to flexibilize the neighbourhood Increase flexibility by clustering energy streams on an aggregated level District impact management through smart ICT control Energy module Including all energy related elements like: HVAC, heat pump, DHW and water storage, PV converter, battery (storage) Smart energy control per individual house To increase the agility of energy supply and demand (prosumption)

16 Heat pump & booster for heating & DHW 200 liter DHW tank Ventilation PV Inverter Smart meter Energy gateway (Battery) (District battery) Inverter Balanced ventilation with heat recovery Monitoring & Smart control Air-water heat pump and storage tank

17 Scan Model Assemble Maintain 3D to 8D

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19 Coaching / User dashboard Developer (BAM): real performance even better than requirements

20 Optimization / Neighbourhood battery 70 single family houses and 2 multistory appartment blocks on same cable and substation The 70 single family houses are retrofitted to net-energy-zero Substation Balancing local (home) optimization and district optimization Figure 1 Picture of the Renovates setup in the VITO labs. Left is the BAM energy module, in the background is the heat and cold generation infrastructure of the lab, the right/center setup contains the measurement array and the DHW tap and space heating profile equipment.

21 Social innovation for NZEB retrofit With the support of

22 Social innovation for NZEB retrofit applying the Rennovates (Dutch) concept in the Belgian context: Building stock much more individualized; houses on average older and bigger BE has 6,5 % social rental housing, NL 33% (source: Housing Europe) Setup & goals: Social focus: intensive coaching of individuals & group + neighbourhood involvement Only building envelope renovation People stay in their homes during works homes; 9 unit apartment block

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24 Feedback Cost per house for envelope retrofit ~ Euro; developer estimates a reduction to Euro should however be feasible/is desirable External façade stability challenge ( stick on after removal of outer masonry blade) causes costs; alternative without any removal is being studied No business case unless BE law on social housing rent is reformed (allowing energy savings to pay for a rent increase <> NL) Taking inhabitants on customer journey is rewarding, but energy saving is no intrinsic motivation for them Too strict planning (2 weeks) could not be fully realized and leads to stress/conflict Inhabitants regret that no interior refurbishments were carried out Post intervention follow-up is important

25 Refurb Addressing the individual home owner while aiming at collective renovation Focus on customer journey NZEB retrofit, one stop shop principle Leiedal pilot (BE): energy compass & renovation coach

26 LEIEDAL

27 LEIEDAL

28 LEIEDAL

29 LEIEDAL

30 Leiedal ECN (2017) Rapportage Energiearmoede

31 Refurb recommendations Intervene at key moments of building: e.g. new owners (BE: 50% renovates within 1 year after acquisition; 75% within 3 years) Differentiate among target groups / customer segments and use customized communication Energy saving is NOT the (main) driver try to include other improvements, especially kitchen/bathroom Offer integrated solutions / value chain: compelling offer Use digital tools & training Provide Single Point of Contact and guarantees on quality Work with group / peer pressure / nudging

32 Concluding observations BPIE example of favourite list inhabitants (Energiesprong NL ZEB retrofit): 1. Deeper window borders 2. New kitchen 3. House does no longer look like a social house 4. Healthier 5. Energy savings

33 Concluding observations Sociopsychology of building retrofit: The inhabitant/owner is not a rational economic actor Behavioural routines are strong and unconscious Declared intentions and behaviour do not match with real behaviour Framing choices is very important: is it considered as a gain or as a loss? Peer pressure and social group/norm do matter > nudging, working on social practices

34 Concluding observations Deep energy retrofit costs: typical range Euro NL typical range Euro BE if kitchen-bathroom included may rather go towards Euro but sharp packages < Euro possible (see Thuisbaas, also other exampless e.g. Gent or Leiedal in particular for works not requiring permit) as with PV, positive cost evolution Next important step is solving RE grid balancing

35 Concluding observations Costs for net zero energy renovation of a terraced house, NL. Cost reduction thanks to economy of scale, 3D-technologies and pre-fabricated materials. (source: BPIE)