Agriculture Reference
In-Depth Information
Chapter 12
DEVELOPMENT AND IMPLEMENTATION OF
THE DANISH CENTRALISED BIOGAS
CONCEPT - FINANCIAL ASPECTS
Kurt Hjort-Gregersen
1. INTRODUCTION
The objective of this chapter is to give a general understanding of the
Danish centralised biogas plant concept, its economic achievements, and
the preconditions, under which economically feasible plants can be
established.
The biogas development programme has been supported by a
follow up programme, in which technical experience and economic results
have been monitored, analysed, and communicated over the last decade.
This chapter is largely based on experience and literature reports from this
work.
The interest of biogas plants in Denmark arose in the early
seventies as a consequence of the oil crisis. A number of small plants were
constructed on an experimental basis, but they were closed down later due
to technical problems and unsatisfactory energy production. However, the
idea of biogas production was kept alive, and in the early eighties the
centralised biogas plant concept was developed. The idea was that a
centralised plant should supply heat and electricity to a local village. Three
plants of this kind were established in the mid eighties. Later, as
environmental consequences of manure application were recognised,
legislation on manure handling and utilisation was strengthened.
Considerable manure storage capacity was required, and maximum levels
of manure application were imposed. It emerged that centralised biogas
plants could play a new role, not only as energy producers, but also as
providers of manure storage facilities and manure distributors. In addition,
centralised biogas plants proved to represent an appropriate way of organic
waste recycling.
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