SERVE-ING Tipperary Results & Lessons
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Transcript of SERVE-ING Tipperary Results & Lessons
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© SERVE Project, 2013
www.servecommunity.ie
SERVE-ING Tipperary
Results & Lessons Paul KEnny
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SERVE Region
© SERVE Project, 2010
Rural Region
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Core Project Activities
Retrofitting for Existing Houses and Buildings
New Buildings
Renewable Energy Supply
Monitor and prove results
Research on socio-economic impacts
and sustainable electricity options
Train/Educate people
© SERVE Project, 2010
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© SERVE Project, 2010
400
Retrofits
50
New Builds
73,000m2
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© SERVE Project, 2010
600
Wood Stoves
950 m2
Solar Panels
2,000kW
Biomass
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© SERVE Project, 2010
40,000,000 pieces of Energy
Data
100’s of House Visits
Many Cups of Tea
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Results
© SERVE Project, 2010
€4.1m in Grant Aid
11% IRR
13% increase in Biomass Use
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© SERVE Project, 2008
0%
5%
10%
15%
20%
25%
A1 A2 A3 B1 B2 B3 C1 C2 C3 D1 D2 E1 E2 F G
National
Tipperary
SERVE Pre Upgrade
SERVE Monitored Houses – Pre Upgrade
EXCELLENT GOOD VERY POOR
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SERVE Monitored Houses – Post Upgrade
© SERVE Project, 2008
0%
5%
10%
15%
20%
25%
30%
35%
40%
A1 A2 A3 B1 B2 B3 C1 C2 C3 D1 D2 E1 E2 F G
National
Tipperary
SERVE Post Upgrade
Notable Shift towards B3 / C1
Using National & SERVE BER Databases
EXCELLENT GOOD VERY POOR
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NOW and THEN
– Now a National Retrofit Programme and Grant
Supports which have many similarities to SERVE
structures
– No supports for retrofitting of homes
– 200 construction people trained on quality standards
– No training on retrofitting
– SERVE has 40 million data points on energy
consumption in dwellings (retrofitted and new
buildings)
– No data on energy performance of dwellings
– 1.5MW of biomass heating in place on Heat Supply
Contracts. ESCO Model Development
– No Biomass Heat Supply Contracts in Place
© SERVE Project, 2010
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• Climate change reality
• Ireland’s energy use – need to accelerate
NZEB
• Energy security
• Competitiveness
Why we need to change
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Climate Change Reality
• “The latest science makes it clear that the world needs to reach zero
carbon emissions globally by 2050 to maximise chances of staying
below 2 degrees and to make 1.5 degrees feasible,”… Mary Robinson,
NUI maynooth, Summer 2015
• End fossil fuels for heating and electricity by 2040
• Grid Electricity is a huge challenge (but not for Today’s discussion!!)
• For housing:
– Elimination of fossil fuel at household level.
– Energy Efficiency
– Renewable energy primary and secondary heat.
• Practical implications:
– Airtightness & ventilation
– Fabric
– Wood Pellets or Heat pumps and Grid De-Carbonisation.
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Domestic CO2 reduction options
• Credible option A:
• At generational retrofit (30-50 years) – when large works being
undertaken:
– External insulation to foundation, and through soffit.
– Remove ceilings, membrane installation, and replace floor.
– New windows & doors, airtight to fabric.
– Airtightness to 0.6-2 ACH;
– HRV, External Airsource stoves, Heatpumps with UFH.
– 60-80k additional cost Vs Standard rewire/ replaster/ replumb/ reroof.
– BER of 40-65 kWh/M2/annum.
– €300 to heat.
– 1.8M houses @70k = 126Bn Euro.
– It will take 50-100 years at current renovation rate to achieve.
• We have 25.
• We need a cheaper solution.
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Domestic CO2 reduction options
• Credible option B:
• At deep retrofit that forgoes very long payback fabric upgrades that costs
less to do, but higher ongoing heat use using RES-E (via grid)
– External insulation only for solid walls.
– Seal up gaps and holes with 3-6 man days labour to achieve 3-5ACH/ Hr.
– New front doors.
– New windows where > 3Uvalue; new glazing where frames have long life left.
– HRV or DCV (i.e. not hole in wall!!)
– Heatpumps with LT rads (COP 3 expected) or pellets.
– 20-40k cost.
– BER of 70-100 kWh/M2/annum.
– €600- €800 to heat vs €1800 (18MWh @10c oil; after boiler).
– 1.8M houses @25k = 45 Bn Euro. (still 8-10 x current retrofit rate!!).
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Measures
• Minimum Requirements:
• Heat pumps:
– Need Low Temperature Radiators
– Need longer heating times, therefore airtightness becomes more of an issue.
– If airtightness improved, ventilation needs to be improved.
– Controls need to be integrated (on/ off Vs radiator temperature control).
• Biomass Boilers
– Pellets may be chosen (larger, historic dwellings)
– Log gassification stoves or Boilers may be chosen with self supply, but not likely.
• Secondary heating
– Remove open fires or Install Chain based chimney closure and No HRV.
– Biomass room heater stoves with external air feed.
• Airtightness upgrade (experimental)
– Pre works test.
– Window/ door frame seal upgrade.
– Service openings external and internal sealing.
– Attic AT works (Taping services, Wires from ceiling roses/ conduits, other openings).
– Other AT weaknesses based on a test.
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Measures
• Minimum Requirements:
• Ventilation:
– Ideally Whole House Heat recovery Ventilation however:
• Can be excessively disruptive/ costly
• Householder may be tied to Open fires or non balanced flue stoves (HRV not ok).
– Demand Control Ventilation
– Other TBC.
• Real time electricity monitor.
• External access controls
• Hot water tank for Heat pump (i.e. Low temperature coil)
• Passiv Haus Front Door.
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Measures
Optional additions:
• Cavity wall insulation
• External Wall insulation
• Attic insulation.
• Windows (frames and glazing)
• Glazing Elements (coated, warm edge spacer, inert gas)
• Solar PV
– All houses will have day / night meter upgrades for the HP.
– High day baseload with HRV.
– Solar Water heater via PV and heatpump!
– Need Low Temperature Radiators
• Low energy Lighting.
– High Quality LED’s
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What will we learn
• Consumer appetite
• Consumer attitudes to retrofit
• Financial model test
• Air Permeability reduction
• Heat pump performance appraisal
….. And a huge amount of other data!!
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• Non profit, public good social
enterprise
• Partnership approach
• Energy management
• Renewable energy and energy
efficiency
• Procurement, project mgmt.
• Cost effective, value driven
• 12 expert staff
• Paul Kenny
• Chief Executive
• T: 052 7443090
• F: 052 7443012
• E: [email protected]
• W: www.tea.ie
• Cahir
Tipperary Energy Agency