| Summary:
Since 1991 there has been a revival in the market partly due to a growing
awareness of environmental issues. In 1992 the government reassessed it strategy
on solar hot water heating and in 1994 published Energy Paper 62, "New and Renewable
Energy: Future Prospects in the UK". The paper recognised SWH as being technologically
viable and commercially available and suitable for inclusion in government research,
development, demonstration and dissemination programmes. The accessible resource
for solar domestic hot water systems by 2025 is estimated to be 12 TWh/year based
on 50% of the housing stock being suitable for a SWH system and that each system
provides 1200 kWh/year5. This resource figure does not take into account any economic
considerations since most purchases of SWH in the UK are not based on economic
arguments at present. The greatest potential in the UK would be the uptake
of SWH systems on all new build developments orientated in a suitable direction.
Planned new building in the UK is estimated as 150 000 dwellings a year 7. If
even 10% of these dwellings installed SWH systems it would increase the growth
of the SWH market significantly. However property developers need to be convinced
that active solar is what the public wants. | 
