Energy for the City of the Future - Ljubljana

18
» On an average working day 1.3 million
journeys are made within the City of
Ljubljana.
Structure of primary energy requirement in public buildings managed by the City
of Ljubljana (MWh/a)
kindergartens
elementary schools
sports facilities
district offices
City of Ljubljana
administrative buildings
cultural institutions
libraries
(Ljubljana City Library)
health centres
36% 18%
20%
pharmacies
Source: ZRMK, 2009.
4%
2%
In terms of the quantity of primary energy, electricity is the
predominant energy carrier (with a share of 44%). This is
followed by district heating (26%) and natural gas (19%).
Extra light heating oil has a 12% share.
The specific annual primary energy requirement for energy
supply in buildings managed by the City of Ljubljana is 528
kWh, which causes 0.14 tonnes of CO 2 emissions per capita
in the City of Ljubljana.
The costs of energy supply for buildings are estimated at
approximately €7,500,000 for 2008, or 2.5% of the total
realised expenditure of the City of Ljubljana.
Public lighting
10,000 20,000 30,000 40,000 50,000 60,000
heating electricity
7%
3%
8%
2%
pharmacies
health centres
libraries (Ljubljana City Library)
cultural institutions
City of Ljubljana administrative buildings
district offices
sports facilities
elementary schools
kindergartens
In 2008 public lighting in the City of Ljubljana included
28,675 street lights with installed power of 3,900 kW,
6%
6%
1,072 advertising billboards with installed power of
254 kW and 181 signal-controlled junctions, with installed
power of 272 kW. The public lighting network is linked by
a 1,580 km cable network, 300 km of overhead cables and
700 lighting points.
Structure of total electricity consumption for public lighting (%)
12%
11%
1%
4% 0%
Source: »Jožef Stefan« Institute, 2009.
Electricity use in 2008 was equal to 25.4 GWh and the
installed power of lamps was 4.97 MW. Compared to 2004,
electricity consumption and the installed power of lamps
for public lighting fell by 25.6%. The share of electricity
consumption for public lighting in 2008 was 1.5% of the
total electricity consumption of the City of Ljubljana or
0.6% of the total primary energy requirement.
The primary energy requirement for public lighting as
a whole in 2008 was 230 kWh per capita, which caused
0.049 t/capita of CO 2 emissions.
The budget of the City of Ljubljana for 2010 envisaged
a maintenance cost of €4,653,045 and an electricity and
network charge cost of €2,896,660.
IndustrY
60%
street lighting on municipal roads
street lighting on national roads
(built-up areas)
street lighting on national roads
(outside built-up areas)
street lighting on bypasses
and motorways
signal-controlled junctions
on municipal roads
signal-controlled junctions
and crossings on national roads
(outside built-up areas)
advertising billboards on municipal roads
advertising billboards on national roads
(built-up areas)
The largest number of industrial enterprises belong to
the food production and metal products group. The
highest use of energy carriers is typically in paper and
paper products manufacturing (24.4%), production of
pharmaceutical raw materials and products (20.2%) and
the production of chemicals and chemical products