Page 168 - Sustainable Cities and Communities Design Handbook

144 Sustainable Cities and Communities Design Handbook

electricity is not able to meet the demands during all hours. The analyses
indicate that the system needs an exchange of approximately 25 GWh of
imported electricity. However, on an annual basis, such import is compensated
by a similar export during other hours.

The system configuration is shown in the diagram in Fig. 7.3.

PHASE 3: FREDERIKSHAVN IN THE YEAR 2030d100%
RENEWABLE ENERGY AND LESS BIOMASS

Phase 3 involves the reduction of biomass including waste to a level corre-
sponding to Frederikshavn’s share of the national resources. A potential of
165e400 PJ of domestic biomass in Denmark has been identified, depending
on the scale of energy crops. Residual resources (straw, biogas, wood chips,
and waste) account for 165 PJ/year. Based on the size of the population,
Frederikshavn’s share ranges from 220 to 500 GWh/year. The expected system
of year 2015 utilizes around 450 GWh. This is in the upper end of the range
and will then have to be adjusted accordingly. However, the use of biomass is
in the right order of magnitude with regard to the long-term objective of the
project.