Sustainable Energy Districts in Flanders: Progressive ... in Cities and Towns... · Sustainable...
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Transcript of Sustainable Energy Districts in Flanders: Progressive ... in Cities and Towns... · Sustainable...
Sustainable Energy Districts in Flanders: Progressive Insights and Cases Han Vandevyvere, Unit Smart Energy & Built Environment, VITO ǀ EnergyVille
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Situating the challenges
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Situating the challenges (1)
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2011 2012 2013 2014 2015
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CO2
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Energieverbruik & CO2-uitstoot
energieverbruik (MWh) CO2-uitstoot
Leuven (~ 100.000 inhabitants) Roeselare (~ 60.000 inhabitants)
Urban emissions do not decrease sufficiently fast
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Situating the challenges (2)
To invest in Energy Efficiency (EE) or in Renewable Energy (RE)?
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Situating the challenges (2)
Only betting on clean energy will not work Roeselare, 60.000 inhabitants, total surface 60 km², energy consumption 2.000 GWh/year
333 3MW turbines… … or a 50 km² solar farm
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Situating the challenges (2)
Deep EE gains will be needed - quick wins time is over
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Situating the challenges (3)
Role of (legal) frameworks...
Roeselare, electricity, technically possible Roeselare, electricity, currently ‘feasible’
Use curve
Use curve
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From individual approaches to collective setups / from government to governance
Citizens & Enterprises
Green Blue Network / Underground / Water / Waste Actors / Data Carriers
ICT/Smart City Providers
Situating the challenges (4)
Local Authorities
Stakeholder configurations for sustainable energy districts
Energy Actors
Mobility Actors
Built Environment Actors
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Long term planning and coordinating (investment)agendas
Situating the challenges (5)
Image source: energiesparen.be
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Securing upfront investments… but with many payback effects
Situating the challenges (6)
Primary benefit: energy (cost) savings, mostly at negative cost over life cycle
Secondary benefits:
reduced carbon emissions increased environmental quality / healthiness inside & outside buildings / comfort & productivity / reduced public health expenditures reduced energy dependency (fossil sources) / reduced fuel poverty increased real estate value increased (temporary) local employment & economy / both lowly and highly skilled labour increased resilience to climate shocks through combined adaptation measures …
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Two cases
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(1) Gent Nieuwe Dokken: Brownfield Redevelopment
Image sources: web / Schipperskaai Development
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(1) Gent Nieuwe Dokken: gradual approach & temporary infill
Bataviabrug: soft link to city centre
Image sources: oudedokken.be / denieuwedokken.be
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(1) Gent Nieuwe Dokken: gradual approach & temporary infill
Grintbakken
Image sources: oudedokken.be
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(1) Gent Nieuwe Dokken: gradual approach & temporary infill
Image source: Stad Gent
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(1) Gent Nieuwe Dokken: gradual approach & temporary infill
Image source: Stad Gent
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(1) Gent Nieuwe Dokken: phased newbuilt 400 dwelling units (incl. cohousing) + public & private services, offices > 1500 dwelling units Sustainability criteria for services / transformable parking spaces / e-mobility incl. e-bikes, e-caddies / …
Image source: Schipperskaai Development
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(1) Gent Nieuwe Dokken: multifaceted approach
Stadsgebouw / Living boats Image sources : Xaveer De Geyter architects / oudedokken.be
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(1) Gent Nieuwe Dokken:
ZAWENT water & energy concept 2/3 residual heat 1/3 biogas fired CHP (+ grey water heat recovery) DH 55°C PV + batteries energy cooperative DuCoop vacuum toilets & kitchen grinders or classical organic fraction collection
Image source: Zawent / vlaamseklimaattop.be
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(1) Gent Nieuwe Dokken:
ZAWENT water & energy concept Behind this is the ZAWENT research & innovation project: Zero AfvalWater met Energie- en NutriëntenTerugwinning. ZAWENT in fact researches the feasibility of the DuCoop project in terms of: • business model • infrastructure needs • juridical aspects of public-private collaboration and shifting cash flows to the private partner. Building works start in 2017, sale of housing units is a big success Authors of ZAWENT however indicate that their concept is not feasible in an urban retrofit context www.oudedokken.be http://denieuwedokken.be www.ducoop.be http://sogent.be/projecten/de-nieuwe-dokken
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(2) Gent Dampoort KnapT OP!: Upscaled urban retrofit in a precarious area
2005-2007 first project with integrated collective renovation approach (‘emergency buyers’, fuel poverty, social employment goals) > 40 big renovations, 40 small renovations. Integrating subsidy schemes
2014-2016 Dampoort KnapT OP!, now with revolving fund, 10 emergency buyers are each funded 30.000 Euro prefinancing, to be paid back when dwelling is sold/quit.
Image sources: Kristof Gielen / Stad Gent / RenoseeC
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Key concepts: deburdening, coaching, prefinancing
Simultaneously realising social goals: cohesion & inclusion, community building, countering gentrification & burden shifting, professional integration
Transit dwelling provided by the city of Ghent in case of deep renovation
(2) Gent Dampoort KnapT OP!: Upscaled urban retrofit in a precarious area
Image sources: Kristof Gielen / Stad Gent