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District Heating

Germany: Construction Starts on 2,230 m2 Solar Field in Chemnitz

Submitted by Baerbel Epp on May 19, 2016
On 11 May, construction work started on a new 2,230 m2 ground-mounted collector array (2,090 m2 of aperture area) in the city of Chemnitz. The project is said to be completed within about a month, and the plant is scheduled to come into operation a few weeks later. The collector field is expected to supply almost 5 % of the heat provided by the new district heating grid for the Brühl housing development near the city centre. 
Photo: inetz
 

Bulgaria: Solar District Heating Becomes Realistic Option

Submitted by Baerbel Epp on April 28, 2016
 
It seems paradoxical: Although abundant sunlight is usually associated with southern Europe, the most solar district heating (SDH) plants in Europe are located in the north, mainly in Denmark, but also in Norway and Sweden. Milan Rashevski, a Bulgarian architect from the non-governmental Institute for Zero Energy Buildings (IZEB), now intends to establish this kind of energy supply in his country too. “We have round about 25 % more sunshine than Denmark, so what works there should be possible here as well,” he said. With the support of Danish organisation State of Green, Rashevski and his IZEB colleagues visited some of the largest SDH plants in Denmark last year.
 

Austria: Big Solar – EUR 200 Million Investment in Graz

Submitted by Baerbel Epp on April 15, 2016
Kleine ZeitungThe Austrian municipality of Graz is preparing for the post-fossil fuel heating era: On 27 February, the front page of national newspaper Kleine Zeitung (copies sold each day: around 300,000) read “Graz plans largest solar storage worldwide”. According to the news article, regional energy provider Energie Steiermark and Austrian solar thermal system supplier S.O.L.I.D conducted a feasibility study for a huge solar district heating plant called Big Solar – with promising results. The study and the news article both references the world’s largest collector field in Danish Vojens with 70,000 m² (49 MWth) as a successful example of how to undertake such a large project. At the beginning of April, Energie Steiermark confirmed the plans for Big Solar’s realisation in a press release about 2015’s annual financial statement. 

Europe: 23 New and Upgraded Solar District Heating Plants of 190 MWth Start Operation in 2015

Submitted by Baerbel Epp on April 5, 2016
District Heating EuropeAs in previous years, Denmark remained the country dominating Europe’s solar district heating market. Twenty of the 23 new and upgraded district heating plants in Europe above 350 kWth (500 m²) from the statistics compiled by Jan-Olof Dalenbäck from the Chalmers University of Technology, Sweden, went into operation in Denmark – whereas Austria, Italy and Sweden had only one each to show for. Dalenbäck’s database shows 211 large-scale district heating plants currently in operation, with combined output at 708 MW (1.01 million m²). This means that only every fourth district heating plant in Europe uses solar energy compared to the 5,400 district heating systems a database from Swedish Halmstad University lists from across the EU-27. The map shows 2,188 cities with 2,445 larger district heating systems. The highest plant densities can be found in Denmark, Poland, the Czech Republic and Slovakia. 
Source: Heat Roadmap Europe 2050 - Second pre-study for the EU27 (see the attached document)
 

Austria: Low Oil Price and Lack of Political Support Weakens Market

Submitted by Baerbel Epp on February 15, 2016
Heating with oilAccording to the ISOL Index by solrico and market data from the industry association Austria Solar, the solar thermal industry is heading into another year of declining markets. Low oil prices and corresponding campaigns of the fossil heating industry have had a substantial impact on this renewable technology. The banner shows the slogan “Heizen mit Öl – das zahlt sich aus” (The Benefits of Using Oil to Heat Your Home) on the website of the Austrian mineral oil industry, which offers grants of EUR 2,500 for the installation of a condensing oil boiler in a single-family building. Austria Solar has also criticised the reduction in the renewable budget of the Austrian Climate and Energy Fund as well as the complicated incentive scheme rules throughout the states. The large-scale project market is what keeps the industry alive. 

Italy: Conto Termico 2.0 Refers to Expected Yield

Submitted by Baerbel Epp on February 12, 2016
The latest statistics of Conto Termico in Italy show that the national incentive scheme has still not been used enough: As of 1 January 2016, it had supported only 62 solar thermal plants for public buildings, while the private sector figure was 10,634. Assuming an average plant size of 7 m², as estimated by Gestore dei Servizi Energetici (GSE), this corresponds to a total subsidised collector area of 75,000 m² – a fairly low result over the 30 months of the scheme. The subsidy volume for solar thermal now amounts to about EUR 27.5 million, around half of the total incentives which have so far been distributed by Conto Termico. This is again a rather small figure compared to an originally planned budget of EUR 900 million. GSE, the state-owned administrator of Conto Termico, has therefore modified the scheme rules. 

Austria: Optimising of Large-scale Collector Fields

Submitted by Baerbel Epp on January 6, 2016
Hydraulic SchemesOne key aspect of the energy and cost optimisation of large-scale collector fields (called arrays in this news) is collector array hydraulics. Optimal connection is achieved when (1) the costs and length of the connecting pipes is small, (2) the pressure drop over the entire array is low and (3) there is homogeneous mass flow distribution across the entire field. “Homogeneous mass flow reduces power losses in the circuit, avoids inefficient pump operation and prevents local stagnation,” explains Philip Ohnewein. The researcher at Austrian institute AEE INTEC managed the four-year project ParaSol (2011 to 2014), which – among other things – analysed the advantages and disadvantages of different hydraulic designs of large collector arrays of several hundreds to several thousands of panels. The results were also discussed and published as part of Task 45, Large Systems: Large Solar Heating/Cooling Systems, Seasonal Storage, Heat Pumps, of the IEA Solar Heating and Cooling Programme in a two-page info leaflet and a 44-page technical document (attached to this article). 
 

Europe: Strategy on Heating and Cooling Launches in February 2016

Submitted by Baerbel Epp on December 21, 2015
Maroš Šefčovič (left) and Miguel Arias CañeteThe publication of the EU Strategy on Heating and Cooling (Heat Strategy) is now scheduled for February 2016, when it will be published as part of the winter (legislative) package comprising a revised Security of Gas Supply Regulation and an EU strategy for liquefied natural gas. The Heat Strategy was supposed to be already out on 18 November 2015. The consultation process is now over and the ENER C3 unit of the Directorate General (DG) of Energy is drafting the final version. The photos show the two most important heads of European energy strategies, both with a five-year term up to 2019: Maroš Šefčovič from Slovakia, Vice-President of the European Commission and in charge of the Energy Union (left), and Miguel Arias Cañete from Spain, the commissioner for Energy and Climate Action. 
Photos: EU Commission
 

France Increases Public Support for Solar Thermal

Submitted by Baerbel Epp on December 11, 2015

The French energy agency Ademe has been supporting renewable heat production in the industry, the district heating sector and at multi-family buildings since 2009. The budget of the national subsidy scheme, Fonds Chaleur (Heat Fund), will double in amount from around EUR 240 million per year to EUR 420 million in 2017. During 2009 to 2014, solar installations accounted for as little as 6 % of Fonds Chaleur's EUR 1.2 billion (see the attached report). Despite the high subsidy amount, the number of solar thermal applications is declining, as is the French solar market in general. Ademe is trying to counter the negative trend by offering new incentive schemes to address the large solar systems segments.
Source: Ademe

SHC2015: Conference Combines New Technologies, Market Analysis and Policies

Submitted by Baerbel Epp on November 2, 2015
SHC ConferenceThe development of the international solar heating and cooling markets is posing great challenges: Whereas the residential market has been on the decline, market demand is shifting towards complex industrial solutions, large-scale plants for solar district heating and innovative solutions for building integration. The leading international solar thermal conference, the SHC2015, will address these key issues facing the industry. The three-day event will take place in Istanbul between 2 and 4 December 2015. The conference programme of SHC2015 has now been available online.
Photo: PSE/SHC2013
 

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