SERVE-ING Tipperary
Results & Lessons
Paul KEnny
www.servecommunity.ie
© SERVE Project, 2013
© SERVE Project, 2010
SERVE Region
Rural Region
Core Project Activities
Retrofitting for Existing
Houses and Buildings
New Buildings
Renewable Energy Supply
Monitor and prove results
Research on socio-economic
impacts
© SERVE Project, 2010
400
Retrofits
50
New Builds
73,000m2
© SERVE Project, 2010
600
Wood Stoves
950 m2
Solar Panels
2,000kW
Biomass
© SERVE Project, 2010
40,000,000
pieces of Energy
Data
100’s of House
Visits
Many Cups of
Tea
© SERVE Project, 2010
Results
€4.1m in Grant
Aid
11% IRR
13% increase
in Biomass Use
© SERVE Project, 2010
SERVE Monitored Houses – Pre Upgrade
25%
National
Tipperary
20%
SERVE Pre Upgrade
15%
10%
5%
0%
A1
A2 A3 B1
EXCELLENT
© SERVE Project, 2008
B2
B3
C1 C2 C3 D1
GOOD
D2
E1 E2
F
VERY POOR
G
SERVE Monitored Houses – Post Upgrade
40%
National
35%
Tipperary
30%
SERVE Post Upgrade
25%
Notable Shift towards B3 / C1
20%
15%
10%
5%
0%
A1 A2 A3 B1
EXCELLENT
© SERVE Project, 2008
B2
B3 C1 C2 C3 D1 D2 E1
GOOD
E2
F
G
VERY POOR
Using National & SERVE BER Databases
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
© SERVE Project, 2010
– No Biomass Heat
Supply Contracts in Place
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.
Domestic CO2 reduction options
• Credible option A:
• At generational retrofit (30-50 years) – when large works being
undertaken:
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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.
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)
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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!!).
Measures
• Minimum Requirements:
• Heat pumps:
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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)
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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.
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.
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Real time electricity monitor.
External access controls
Hot water tank for Heat pump (i.e. Low temperature coil)
Passiv Haus Front Door.
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
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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
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!!
Looking for Pilot Houses – in particular people who
will influence others,.
Tipperary Energy Agency
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Paul Kenny
Chief Executive
T: 052 7443090 •
F: 052 7443012 •
E: pkenny@tea.ie •
W: www.tea.ie
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Cahir
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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