Project no. 104
An Understanding of Energy Consumption Enabling
the Green Energy Solution of Tomorrow
C. A. Fuglsang-Damgaard, S. S. Kruse, M. Grønning, and E. Zinck
DTU Compute, Technical University of Denmark
In order to reduce pollution and CO2 emissions in our cities we need to close coal, gas and oil
power plants and rely more on renewable energy, such as solar and wind. However, no
renewable energy source is controllable. This raises the question of how renewable energy
can replace old polluting sources that can deliver electricity on demand.
If the power consumption in the cities fluctuates a lot, it is very hard to secure an energy
delivery by uncontrollable energy. Unfortunately, this is the case in most cities due to the fact
that people tend to do the same things at the same time. When everybody cooks dinner at the
same time, energy consumption increases. One solution to this problem is to introduce
SmartGrid which allows for more flexible consumption of electricity such that consumption is
increased when more renewable energy is produced.
The aim of our project is to understand what factors drive the large fluctuations. This is
necessary to know in order to make energy consumption more even by for instance using
In our project we analyze the hourly consumption of energy for different areas in Malmö and
the supply of energy to Skåne and Malmö. This is done by analyzing so-called ‘peaks’, which
are time periods where the supply of energy to Skåne is above a defined upper limit.
Our findings show that peaks have a clear yearly variation, since the peaks in general occur
during the colder and darker months of the year where the need for heating and lighting is
higher. The peaks also show a large daily variation: A large number of peaks occur 9-12 during
the morning and 18-19 in the late afternoon, which indicates that part of the problem can be
solved by moving the energy consumption just a few hours away or to during the night where
virtually no peaks occur.
The data also shows that some areas of Malmö consume more relative to other areas of
Malmö when peaks occur. These areas are where solutions like e.g. SmartGrid should be
implemented first to make the largest impact on the overall energy consumption
Our project provides the groundwork identifying the problems of today’s energy consumption.
On top of our research work the solutions for tomorrow’s energy system using renewable
energy can be built.