Noel Rice
20th November 2013


Energy Conservation Strategic Context

House Condition Survey 2011

NIHE Heating Policy

Current Projects

Cavity Wall Insulation Research

Solid Wall Insulation

Solar PV Panels

Renewable Pilot Projects

Economic Benefits of Energy Efficiency

Energy Conservation Strategic
Context

NIHE is Home Energy Conservation Authority

Energy efficiency of housing improved by 22.4% since
1996 – All tenures

Energy rating up from 41 to 60 (46 to 55 in England over same period)

Savings of 2.5m tonnes of CO2 pa

However, fuel poverty has increased

Fuel prices and income are factors

1996 2011
600000
500000
400000
300000
200000
100000
0
Gas Oil Coal Electric Dual Others

5%
6%
23%
66%
Full Cavity
Partial Cavity
Internal/External Ins
No wall insulation (2/3 are
SOLID wall)


Cavity wall insulation where appropriate

Costs £450 - £500

Savings – Up to £140pa

Mineral Wool or Bonded Bead

Quality Issues – Sufficient fibre at right pressure/density – sufficient glue for beads

Cavity should be at least 50mm wide

Check external wall condition/exposure

Current investigative research project ongoing

2%
4%
13%
35%
46%
< 100mm
100-150mm
>150mm
Don’t Know
No loft insulation


270mm of loft insulation

Costs around £300

Savings (0-270mm) Up to £180pa

Savings (100mm to 270mm) £25pa

Ventilation and wiring issues

Hot Water Tank – DIY Cost £15 – Savings £45pa

Pipes – DIY Cost £10 – Savings £15pa

Draught proofing with appropriate ventilation
* All figures from EST for 3 bedroom gas heated semi

12%
8%
80%
Full Double
Glazed
Partial Double
Glazed
No Double
Glazing


Natural Gas where available

Network may move West

Outside gas area

Oil Condensing Boiler or

Wood Pellet Boiler

Solid Fuel open fire (exceptional basis)

Secondary Sources

Solid Fuel Open Fire (no boiler)

Focal Point electric Fire

Evaluate range of innovative alternative


House Coal

Oil Non-Condensing

Oil condensing

Gas Condensing (PNG)

Gas Non-Condensing

Gas Condensing (Firmus)

Wood Pellet Boiler

Economy 7

LPG Condensing

LPG Non-Condensing

Boiler upgrade from G to A can save
Annual Cost £
1318
1573
1287
1093
1327
1041
1055
1761
2020
2463
£300 pa


Initially Greater Belfast 1996-2007

Firmus Network; Newry, W’point, Banbridge, Armagh,
Craigavon, Antrim, Ballymena, Ballymoney, Coleraine,
Limavady and Derry

Includes rural villages en route

Gas to the West
 licence competition 2013/14

NI Assembly committed £32.5m

Includes towns of Dungannon, Coalisland, Cookstown,
Magherafelt, Omagh, Strabane, Enniskillen and Derrylin

Cavity Wall Insulation (CWI) -
Research

Is there a problem with existing CWI?

Possible problems maybe:

Fibre insulation – e.g. has it settled?

Bonded bead – e.g. sufficient glue?

Insulation board – e.g. properly fitted?


NIHE – commissioned research on 300 dwellings across NI

Research being undertaken by SERC

Provide evidence base for remedial programme, if required

Make recommendations & shape policy


120,000 solid wall houses in NI

83,000 no insulation - mostly private

Internal Wall Insulation £5.5k to £8.5k*

Savings £445pa

External Wall Insulation £9.5k - £13k*

Savings £475pa
* Estimates from Energy Saving Trust based on heating a gas fired semi-detached dwelling with 3 bedrooms

Coleraine Project – Work in Progress


Generates electricity from daylight

Use it or lose it

Renewable Obligation Certificates

Export Tariff

Costs have reduced in recent years

3kWp system costs £6k- £7k

Income generation £490pa plus bill

Plus lower bills

Rent a Roof Schemes available

Maintenance


Heat water using light from the sun

Property should be south facing

Flat plate and evacuated tube

Installed in 2,032 NIHE Homes – EREF fund

Saves around £60-£85 per year – depends on usage pattern

DETI Grant OF £320 under Renewable Heat Premium
Payment

Average Cost £2.5 to £4k

Maintenance – Anti-freeze, valves, hoses,…
*Figures from EST

Average cost - £4K - £10K (Manually fed)
Grants - Renewable Heat Premium Payment £2,500

Renewable Energy
Heat Pumps
Ground Source Heat Pump
Average cost – £8k - £10K
Grants – Renewable Heat Premium
Payment £3,500
Air Source Heat Pump
Average cost - £6K
Grants – Renewable Heat Premium
Payment £1,700
See www.detini.gov.uk

Economic Benefits of Energy
Efficiency

Lower fuel bills – increased disposable income for spend on other things

Less fuel debt and fuel poverty

Reduced maintenance costs

Increased value of home

Greater warmth/comfort

Less risk of ill health

Energy programmes create jobs

Minimises economic cost of damage to environment


Affordability of all fuels

Particular issue with budgeting for oil

Insulation for solid wall dwellings

Whole house approach

Funding required programmes

Income dimension of fuel poverty

Infrastructure improvements