The development 1996-2007

In the period 1996-2007 solar district heating plants were established at 6 places in Denmark. All projects were supported by the Danish Energy Agency and/or by The European Union and all plants consisted of ground mounted flat plate collectors of 12,5 — 14 m2 and has pumps with vari­able flow making it possible to decide a fixed production temperature from the solar collectors.

In the period the production price/MWh heat has been remarkable reduced for the same or higher solar fraction.

Plant

Collector

areal

Established

Production

MWh/year

Price Mio. €

Solar

fraction

%

Prod. price €/MWh Annuity 0,1

Prod. price €/MWh 2006 level

Marstal

8038 m2

1996

3472

2,23

13

64

87

^roskobing

4890 m2

1998-2000

2103

1,24

16

59

83

Nordby

2500 m2

2002

1100

0,63

25

57

63

Ulsted

5000 m2

2006

2400

1,28

21

53

53

Bradstrup

8000 m2

2007

3729

(calculated)

1,68

9

45

44

Table 1. Price development 1996-2007 (examples calculated without investment support)

Marstal combines solar with waste oil. ^roskobing combines solar with straw, Nordby combines solar with wood chips, Ulsted combines solar with wood pellets and Bradstrup combines solar with natural gas utilised in a combined heat and power (CHP) plant.

Fig 1. Brsdstrup implemented 2007

Подпись: Fig 1. Brsdstrup implemented 2007

The latest development in natural gas price has now resulted in implementation of one more solar district heating plant combined with natural gas fuelled CHP in 2008 and two plants are ordered for 2009 and more plants are expected to follow. These plants are implemented without economical support.