Retrofit to Save Energy – RetSE

Getting inspired to reduce energy consumption

Workshop: Three expert speakers who will inspire you with examples of how you can reduce energy consumption in your Bath home.

A free event from RetSE – Retrofit to Save Energy. 07817 587151

Wed 29th Feb, 7 – 10pm, The Friends Meeting House, Lower Hall, York St, BA1 1NG


Jonathan Hetreed, Director, Hetreed Ross Architects, “Towards Passivhaus Ecofurb”

A discussion of eco-refurbishment towards passivhaus standards.

We will touch on the principles of passivhaus design, what it means practically and – just as importantly – what its not.

Illustrated by 2 case studies: the first is a 1950s detached suburban house south of Bristol that was completely refurbished and substantially extended by its new owners, using a contractor for the ‘shell works’, and completing fit-out and finishes themselves. We include their feedback comments as they complete the project late in 2010.

The second is a 1960s detached house in Bath whose owners are half way through a 2 phase project to slightly extend and substantially upgrade the environmental performance of their house using a local contractor. We include a discussion with them of the decisions they made and their energy monitoring feedback prior to the works and at the end of phase 1.


Robert Cohen, Technical Director, Camco, “Achieving an 80% reduction in energy consumption in an 1830 Town House”

This presentation will describe the package of measures needed to transform a solid-walled, 3-bedroom, mid-terrace dwelling in London, built in 1830 and now in a Conservation Area, into a low energy as well as a delightful home.  The presentation will then report the actual energy performance for the 2011 calendar year: total emissions were 1.1 tonnes of CO2, an 84% reduction from the (predicted) level of the pre-refurbishment house.  Due to a feed-in tariff for the modest PV system, the net annual fuel bills are negative.

The conclusion is that a dwelling refurbished to near-PassivHaus standards attains a tipping point where true low energy operation is viable because occupants need little energy to satisfy normal comfort requirements, at least in London’s climate. But the very low energy use depends on supportive occupant behaviour, ranging from wearing warmer clothes in very cold conditions, using natural ventilation when heat recovery is unnecessary, switching lights off when they are not needed, energy aware use of domestic appliances, etc.


Understanding what I can do to reduce energy consumption in my Bath home

Talk: Speaker David Shewan from Parity Projects discusses assessing and prioritising energy saving options in the home, based on the Widcombe study, but applicable to all areas.

A free event from RetSE – Retrofit to Save Energy: 07817 587151

Wed 28th March, 7 – 10pm, The Friends Meeting House, Lower Hall, York St, BA1 1NG