Praying for a solution

Among all the encouraging articles and no doubt highly-paid departments and organisations urging renewable energy, I have looked in vain for a solution for renewing the heating in a medium-sized church.

The retail beginnings by Currys‚ and B&Q are promising for domestic properties but unsuitable (apparently) for larger buildings. Anyway they concentrate on electricity generation.

This adds a lot of complications to the power supply for a semi-public building (or am I wrong?). The only contact I found to have costed these out said 'not viable yet'.

Solutions using piped warm water from the roof for storage, then background (underfloor, for example) heat or reducing kitchen hot water costs seem more likely. Has anyone actually done this for similar buildings, and if so where are the designers and constructors/plumbers we could call upon?

J Gray, Warwicks