Dronninglund Fjernvarme. World (3.) largest solar powerplant for district heating. Manager Johan Frey

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1 Dronninglund Fjernvarme World (3.) largest solar powerplant for district heating Manager Johan Frey

2 Dronninglund Fjernvarme Started ,350 houses, population people. Approximately 50 kilometer of pipes. Annual production of 40,000 MWh. Turnover approx. 4 mill.. According to Danish law, you cannot make a profit from selling heat. Owned and operated by the customers.

3 Production plants Combined heat & power: Four gas Engines 3.6 MW power, 6.4 MW heat. Two gas boiler. One with associated absorption heat pump. One bio-oil boiler. 37,573 m 2 solar panels, approx. Many different forms of produktion. Then we can select the cheapest for the day.

4 Why the solar powerplant? In 2006 we had to find replacement for two oilboilers, so the customers instructed the Board that: The new powerplant should not result in increasing the price of heating. 50% phase-out of fossil fuels in the first phase. In the long run up to 100% phase-out of fossil fuels National goals: Heat produktion fosil free in 2035 All energy fosil free in 2050)

5 The incentives in year 2006 was: High taxes on natural gas. App. same level as the gas price itself. No tax on solarenergy. Not allowed to use biomass at naturalgas fired plants. The municipality dicedes which area can use which fuel. Saved CO 2 quotes could be sold.

6 Why solar thermal?

7 Change of energy production Before May 2014 After May 2014 Gas Bioolie Solarheat Gas Biooil 50% 50% 40% 45% 15%

8 A large pitstorrage and a heatpump can allow 50% of solar energy in our system. Combined heat and power CHP Oil or gas boiler m² m 3 cost effective heat storage Heatpump End use

9 Design of pit heat storage

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16 Pitstorage,

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19 Investment, Dronninglund Ammount in thousand Euro. Heat storrage, m3 (38,7 Euro/m3) Buildings Solarpanels, m District heating pipes Booilerplant and heatpump 920 Building interest and contingencies 800 Total investment hadware Consulting engineers 673 EUDP (subsidies from Danish Department of Energy) Nettoinvestment:

20 Budget 2014/2015 for a standard house in Droninglund year with solarpanels Price reduction for a standard house Energy price/ MWh 75,83 66,44 171,84 Fixed costs/ m2 2,81 2,55 33,80 Energy saving tax 6,71 0,00 6,71 Saved VAT 53,09 Total savings: 265,44 A standard house in Denmark is considered to be 130 m2 and use 18,1 MWh pr. year

21 Experience with large solar installations Easy to operate, runs unattended most of the time. Little maintenance: Shaft seals, filters and area-inspection. Operating expenses: Approximately 15 cent per. MWh solar heat. Power konsumption: App. 3 kwh electricity /MWh solar heat.

22 Future plans: Large pitstorrage can integrate renewable electricity in heat production. Combined heat and power EL- boiler Heatpump CHP EB HP Oil or gas boiler m² m 3 cost effective heat storage Heatpump End use

23 Large electrical heatpump, chilling groundwater

24 change of energy production Before may 2014 After may 2014 Gas Bio oil Solarheat Gas Bio oil Future Solarheat Gas Bio oil El- heatpump 50% 50% 45% 40% 45% 40% 15% 10% 5%

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26 4th Generation District Heating (4GDH) So far we have focused on how we produced the heat in a central way. Not so much on how we distributed it. And hardly no focus on the houseinstallations. The fourth generation district heating system creates synergies between the district heating network, the network components, house installation, district heating production and system integration. 4GDH systems and technologies will play a big part in future cost-effective sustainable energy systems and are likely to replace the import of fossil fuels and create jobs and economic growth in Denmark and in Europe.

27 Heat Roadmap Europe 4 Heat Roadmap Europe 4 is a Horizon 2020 funded research project, with a consortium of 23 partners and will be running from 2016 until Its main goal is to study the heating and cooling sector in Europe by quantifying the effects of increased energy efficiency on both the demand and supply side, in terms of energy consumption, environmental impacts and costs. "The overall aim in HRE4 is to develop low-carbon heating and cooling strategies, which are called Heat Roadmaps, and subsequently to quantify the impact of implementing them at a national level for 14 EU Member States

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