Sunday, August 30, 2015
Visit to St Mary’s Church, Welwyn

... to learn about their Ground Source Heat Pump (GSHP) system

St Peter’s will need to replace its boilers in the not too distant future.  The energy usage of the church is a major part of its carbon footprint. Since reducing carbon emissions is an important element of caring for our environment, it is important that we give careful consideration to the church’s future heating system.  

Given this and the fact that a nearby church has recently invested in a fairly innovative method of generating heat in order to hear their church, several members of the green team accompanied Churchwarden Mark Waller to St Mary’s GSHP Open Day in November 2008.  The group returned with a detailed appreciation of the magnificent project implemented at St Mary’s which has significantly reduced their conventional energy consumption, reduced their recurrent energy bills and reduced their carbon footprint by around 80%.   Whether or not such a system, which is costly to install, is suitable for St Peter’s needs further careful examination in the context of the full range of alternatives.

St Mary's heat pumps

The nerve centre of the Ground Source Heat Pump at St Mary’s Church, Welwyn.


Sunday Worship
8.00 am Holy Communion (said) - Book of Common Prayer
9.30 am Holy Communion (sung) - Common Worship with crèche and Junior Church
  Second Sunday - All-age service with orchestra
11.30 am Choral Mattins - Book of Common Prayer (service of morning prayer led by a choir)
6.30 pm Choral Evensong - Book of Common Prayer (service of evening prayer led by a choir)
9.00 am Morning Prayer in the Lady Chapel (about 30 mins)

 Click to view full detail of services


Greening the Church Meetings
Event StartTitle

Meetings usually last for up to 90 minutes. If meetings on Wednesday or Thursday evenings are likely to be difficult for you in 2010, and you want to participate in these meetings, please let Dennis Parker know (

Join Us

Are you thinking of trading in your SUV for a hybrid?

Do you routinely use reusable shopping bags?

Do you use recycled paper in your printer?

Are you trying to avoid purchasing products encased in large amounts of packaging?

Have you switched to low energy light bulbs and a green energy supplier?

Are you routinely sorting your waste into recycling containers of different kinds?

Do you sometimes cycle or walk rather than driving?

Do you know the arguments for and against carbon offsetting?

Are you considering offsetting the carbon emission consequences of your next flight?

Do you see the link between religion and environmentalism?

If any of these sort of issues interest you, why not join us in helping to move the green community initiative forward ?  You can join by contacting either Dennis Parker ( or Sally Martin ( and/or by just coming along at any time to one of the evening meetings organised in 2009 to take the initiative forward.  

The dates and other details of these meetings are given above.  You can commit yourself to just as little or as much as you want.  You can just give your view if you wish, or you can help organise some of the actions which we are planning to take forward in 2009 and beyond, and you can help shape these initiatives at the same time.  If you have no experience of environmental issues, then it does not matter.  However, if you have experience of them, come along and let us learn from your experience.


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