Community Owned Cooperative
Solar Thermal Heat Generation
Dronninglund Town
Denmark
Site Visit September 2015
Finlay MacDonald and David Goldie
1. The Stratego Project
• Denmark event sponsored by Stratego during September 2015
• Attended by various Scottish Councils
• The project aims to aid:
the development of effective heating and cooling plans
and build capacities to deliver Scottish District Heating on
the ground.
Slide 1 Solar Thermal Heat Generation
2. Dronninglund District Heating • District Heating Scheme started in 1959
• Approximately 30 Miles of Pipework
• 1,350 Houses, population 3,300 people
• Annual production of 40,000 Megawatt Hours (MWh)
• Annual turnover of approximately £3.3 Million Pounds
• According to the Danish District Heating law companies are non-profit, and thus cannot yield a profit from selling heat.
• Infrastructure Owned & Operated by the Customers
Slide 2 Solar Thermal Heat Generation
3. Dronninglund District Heating • Current Energy Production Plant: • 4no Combined Heat & Power Gas Engines delivering 3.6 MW of
power and 6.4 MW of Heat
• 1no Emergency Gas Boiler that can deliver 8 MW of Heat
• 1no Bio-Oil Boiler with associated absorption Heat Pump, with a total output of 6 MW
• 1no Bio-Oil Hot Water Boiler producing 10 MW
• New Solar Thermal Plant – Approx. 37,573 m2 of solar panels, producing 27 MW with associated seasonal heat storage of 60,000 M3 of water.
Slide 3 Solar Thermal Heat Generation
4.New Thermal Storage Plant
Slide 4
Heat Pump
Winter Gas or Oil Boilers
CHP
Solar Thermal Panels 35 to 40,000M2 generating hot water
60,000 M3 cost effective hot water held in underground Storage Pit
Power Heat to into store
End Users
Combined Heat and Power Plant
Heat
Heat
Hot Water to storage pit
Heat
5. Move from Gas/Oil to Solar Energy
Slide 5 Solar Thermal Heat Generation
6. Original Gravel Pit Site
Slide 6 Solar Thermal Heat Generation
7. Storage Pit Excavated and Ready for Liner
Slide 7 Solar Thermal Heat Generation
8. Scale of the New Pit
Slide 8 Solar Thermal Heat Generation
Engineers Laying the
Waterproof Liner
Membrane
9. Filling the Storage Pit
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10. Insulation and Cap Sheet Being Laid
Slide 10 Solar Thermal Heat Generation
11. Cap Sheet and Insulation Installed
Slide 11 Solar Thermal Heat Generation
12. Ariel View of the Site
Slide 12 Solar Thermal Heat Generation
Solar Storage
Pit
Solar Thermal Panels
Pump Building
13. Funding for Solar Scheme
Investment in Dronninglund Solar Thermal System
(Amount in Thousand Euro)
1 Heat storage, 60.000 M3 (38,7 Euro/m3) 2.400
2 Buildings 2.400
3 Solar Panels, 37.573 M2 6.100
4 District Heating Pipes 1.340
5 Boilerplate and Heatpump 0.920
6 Building Interest and Contingencies 0.800
7 Total investment Hardware 13.960 Euros
8 Consulting engineers 673
9 EUDP (subsidies from Danish Department of Energy) -2.953
10 Community Nett Investment: 11.680 Euros
£9.54 Million Pounds
Solar Thermal Heat Generation Slide 13
14.Solar Thermal: The Benefits
• Power source readily available (Sun)
• Cleaner environment
• Low maintenance
• Low operating costs
• Reducing dependency on Fossil Fuels
• Fuel price is set for 30 years
• Satisfied Customers.
Solar Thermal Heat Generation
Slide 14
15. Happy Site Manager
Solar Thermal Heat Generation
Slide 15
16. Scottish Councils: % households in fuel poverty
David Goldie Slide 16
0% 10% 20% 30% 40% 50% 60% 70%
City of EdinburghFalkirk
East DunbartonshireWest Dunbartonshire
Aberdeen CityWest LothianRenfrewshire
South LanarkshireMidlothian
ClackmannanshireEast Renfrewshire
East LothianStirling
North LanarkshireGlasgow City
South AyrshireFife
East AyrshirePerth and Kinross
AberdeenshireScottish Borders
North AyrshireMoray
Argyll and ButeDundee City
AngusInverclyde
Dumfries and GallowayShetland Islands
HighlandEilean Siar
Orkney Islands
17. Scottish Councils: % houses off gas network
David Goldie Slide 18
0% 20% 40% 60% 80% 100% 120%
City of EdinburghAberdeen City
West DunbartonshireEast Dunbartonshire
East RenfrewshireDundee City
InverclydeGlasgow CityRenfrewshire
ClackmannanshireNorth Lanarkshire
North AyrshireEast AyrshireWest Lothian
FifeFalkirk
East LothianSouth Ayrshire
South LanarkshireMidlothian
StirlingAngusMoray
Perth and KinrossScottish Borders
Dumfries and GallowayAberdeenshireArgyll and Bute
HighlandEilean Siar
Orkney IslandsShetland Islands
18. Scottish Councils: % houses with central heating
David Goldie Slide 19
84% 86% 88% 90% 92% 94% 96% 98% 100% 102%
ClackmannanshireWest Dunbartonshire
FalkirkMidlothian
North LanarkshireInverclyde
FifeNorth Ayrshire
East AyrshireEast Dunbartonshire
East LothianWest Lothian
StirlingCity of Edinburgh
ScotlandScottish Borders
MoraySouth AyrshireAberdeen City
East RenfrewshireEilean Siar
South LanarkshireAberdeenshire
RenfrewshirePerth and Kinross
Dundee CityGlasgow City
AngusHighland
Dumfries and GallowayArgyll and Bute
Shetland IslandsOrkney Islands
19. Contrasts
• History / culture
• Community not “Utility”
• Not for profit
• No direct public funding
• Local innovation and commitment
• Simple business model
• Not about fuel type / single source
David Goldie Slide 20
Thank You and
Questions?
Solar Thermal Heat Generation Slide 19
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