SuperHome Database

Petersfield, Stroud, Willowdale Close, Sunpower Cottage

House Summary

Paul Ciniglio

House Type:
1990 2-bed terrace

Carbon saving:
80% - SuperHomes Assessed  

Reported saving on bills:

Total invested:
£30 000

  • Petersfield_SunCottage
  • South elevation, PV, solar thermal, portrait

Measures installed:

  • Cavity Wall Insulation
  • Double Glazing
  • Draught-proofing
  • Heat Pump (Air Source)
  • Loft Insulation
  • Low Energy Appliances
  • Low Energy Lighting
  • Mechanical Ventilation Heat Recovery
  • Solar PV Panels
  • Solar Water Heating

Upcoming events

Early interest in Open Days encourages SuperHome owners to host more events. If you'd like to visit this property please contact the owner and let them know. SuperHomers are often happy to respond to questions about their refurbishment project by email between times. Please read ‘more on contacting this SuperHomer’ before you make contact.

What visitors are saying

"Brilliant to see a 2010 fully functioning home energy/insulation system in action, very inspiring, will keep in touch as much own home system changes."

“Very informative and inspirational visit.”

“Extremely interesting new technologies.”

"Very informative. It is good to see the products in use!"

Personal story:

I am Sustainability and Asset Strategist for First Wessex – a housing association providing 20,000 homes in the south east and building around 500 new eco-homes each year. The main focus of my role is to reduce the environmental impact of the housing association’s activities. I have worked in the construction industry in different roles for 29 years concentrating on environmental issues in the last thirteen. I studied as a building surveyor and went on to complete my masters in sustainable futures. In 2012 I was awarded the ‘Green Social Housing Champion’ of the year at the Sustainable Housing awards.


I was motivated to retrofit my home for several reasons. The obvious recognition that natural resources are limited and mass domestic retrofit will help to conserve and protect the natural world. Like many, I have long term concerns over energy security and price stability so I see my retrofit project as helping to safeguard against this uncertainty. In my role at housing associations I manage the retrofitting of a lot of homes to advanced standards and thought that it was time that I did the same so I could learn from the process and improve my understanding of what retrofitting is really all about. I also had a desire to be a pioneer in this new and exciting area of work and to help others to understand the challenges and benefits of retrofit through the open home visits and providing general advice.

Also see:
Property background:

The property is a 2 bedroom mid terrace building built in a cottage style in 1990 located in the South Downs National Park.

Key changes made:

The main energy reducing measures installed in the property include insulation (cavity wall and loft insulation), double glazing and a heat recovery system as well as increasing the air tightness of the property. I also use low energy lights and A rated appliances as well as water saving measures (ultra low dual flush toilets, aerated shower heads, water butts ad meters). Renewable energy sources installed include PV, solar thermal and an air source heat pump.

Measures installed in detail:

• Cavity wall insulation: blown mineral cavity fill (60mm)
• Double glazed, low E glass, Argon filled, ‘A’ energy rated windows with 20mm gap.
• Draught-proofing
• Air Source Heat Pump (6kW) Altherma by Daikin, with Jaga low energy and water radiators
• Loft insulation: 300mm thick Earthwool by Knauf, insulated and draught stripped loft hatch
• All A rated energy appliances
• Lights: All compact fluorescent or LED
• Through wall heat recovery ventilation to kitchen and bathroom by Vent-Axia
• Solar PV: 1.85kWp Kyocera modules by Rayotec
• Thermal solar panels: 2.3 sq m Rayotec evacuated tubes

Benefits of work carried out:

The energy consumption reductions were above expectations and the heat pump in particular worked better than expected and has been extremely reliable. The PV is also very reliable, and due to the low occupancy of the house, 70% of the PV output is exported to the national grid. I have experienced some problems with the solar thermal during very hot weather as a result of my cylinder (heat store) needing to be larger but the space to increase volume not being available.

My whole enjoyment of the home is so much better now in terms of comfort and pride in the home. You’re certainly going to get the best out of it if you know how the system works…a bit like driving a car to get the best miles per gallon.

Favourite feature:

Solar PV

Contact this homeowner

Assessment types

SuperHomes Assessed

A home that has been visited and assessed by us and confirmed as reaching the SuperHome standard, which demonstrates a 60% carbon saving.

Homeowner Reported

Information has been provided by the homeowner about their home and energy use prior to the installation of measures and following their installation which demonstrates a carbon saving. This information has not been verified.

Remote Assessed

The homeowner has provided information on their home including what measures have been installed which has enables an assessor working on our behalf to assess their carbon savings. This home has not been visited to verify the measures installed.


This home has not been assessed, but the homeowner has reported what measures have been installed. It may be that this home is awaiting assessment.