solar energy in kent Comparison of Solar Water heating Systems

Kentish Flats seen from top of North Downs near Lenham. Turbines are about 30 miles away - see map

 



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Property prices soar in the desert
India's thirst for solar energy has transformed Mr Singh's property from a dry, dusty inhospitable environment into a sun-drenched power socket that promises much, both for energy companies and for a country that still suffers black-outs.
UK 'needs new climate policies'
Major changes in policy are still needed to meet climate targets despite emission cuts brought about by the recession, say government advisors.
Barack Obama calls for clean-energy push
US President Barack Obama has called on his party and supporters to back a "new future" of clean energy.
EU 'half way to 2020 emissions target'
The EU is more than halfway to its target of cutting emissions by 20% from 1990 levels by 2020, a report shows. The assessment by the European Environment Agency (EEA) reveals that emissions across the 27-nation bloc fell by 11.3% during 2008.

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Comparing the main systems, vacuum tube and flat plate

The data shown below will vary from site to site, and between installations, the values are for guidance purposes only. The systems are listed in approximate order of apparent effectiveness against cost. This will of course vary between installations, other considerations are aesthetics, personal taste, scalability etc.

There are a growing number of systems, please email me with the comparable data along with a target price for yours if you want to be listed.

NB. The original comparison included a reference to LCBP, I have removed this as with any system installed now you should clarify eligibility for Renewable Heat Incentive.

SolarUK LaZer2 System

  • Collector Type: Evacuated Tube
  • System Type: Sealed Pressurised Indirect
  • Control Type: Differential
  • Typical Performance: 600kWh/m²/annum
  • System Life: >25-Years
  • Warranties: 25-Years Against Loss of Vacuum. 2-Years Parts & Labour
  • Surveys: Free On-Site Surveys
  • Installation: All Teams Employed & Trained by SolarUK Ltd
  • Maintenance: Change Anti-Freeze Every 5-Years.
  • Typical Installed Cost: £3,900
  • Website: www.solaruk.net

Genersys 1000-10/20 System

  • Collector Type: Flat Plate
  • System Type: Sealed Pressurised Indirect
  • Control Type: Differential
  • Typical Performance: 479kWh/m²/annum
  • System Life: 35-Years
  • Warranties: 20-Panel. ?-Years Parts & Labour
  • Surveys: Unknown
  • Installation: Approved Sub-Contractors
  • Maintenance: Every 2-Years Check Collectors. Every 5-Years Re-Evacuate & Change Anti-Freeze.
  • Typical Installed Cost: c.£4,000 (estimated)
  • website: www.genersys.co.uk

Solar Supplies Consol System

  • Collector Type: Evacuated Tube
  • System Type: Sealed Pressurised Indirect
  • Control Type: Differential
  • Typical Performance: 459kWh/m²/annum
  • System Life: Unknown
  • Warranties: Unknown
  • Surveys: Unknown
  • Installation: Typically Plumbers
  • Maintenance: Unknown
  • Typical Installed Cost: Unknown
  • website:www.solarsuppliesuk.co.uk

SolarTwin ST4010/20 System

  • Collector Type: Flat Plate
  • System Type: Open Vented Direct
  • Control Type: PV Pump
  • Typical Performance: 293kWh/m²/annum
  • System Life: 20-Years
  • Warranties: 5-Years Parts. Labour Unknown
  • Surveys: Telephone
  • Installation: SolarTwin Employed Engineers
  • Maintenance: Non! (Hard Water Will Cause System To Fail).
  • Typical Installed Cost: c.£3,700 (excluding cylinder or water softner)
  • Grants: None
  • website:www.solartwin.com