Production of energy services

We have now reached the last part of the energy flows where the energy is converted to energy services in the form of light, heating, PC, transport, etc.

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Production of energy services

In this part of the energy flows, we are transforming secondary energy to energy services. We also converts transportable primary energy to energy services. For example, we use firewood and natural gas for individual heating. Finally, we explore the local primary energy via solar panels and heat pumps for individual heating.

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Production of energy services

Production of energy services

  • In the Household sector, we use electricity for lighting, IT, cooking, heating, etc. - Natural gas for heating and cooking - district heating - heating oil
  • In "Manufacturing industries" and "Trade and services", we have the same types of consumption as in "Household", but the distribution is different. Added to this we have energy consumption for compressed air, evaporation, ventilation etc.
  • In the transport sector will use petroleum products in the form of gasoline and diesel fuel in our cars. We use oil in trains and ships. We use kerosene for airplanes
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Production of energy services

The Decision Chain in the final consumption stage is different from the decision chain in the other parts of the energy flows. Until now, it has been the politicians and executive employees in the energy sector who made the decisions. Here in final consumption it is primarily private citizens and companies outside the energy sector who make decisions.

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Production of energy services

When we on Energy-Together map open the box for conversion to energy services, and looks at how production of energy services is divided into categories - technologies and natural science pays no role. Here the division is determined by the type of energy services being produced, by law and by the groups of consumers who make the decisions

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Production of energy services

The Energy-Together map for extraction, transport, transformation of primary energy into secondary energy, transport of secondary energy and conversion to energy services.

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Import - export

Import - export

Until now we have not focused on a specific geographic area, when we looked at the Energy-Together card. When we choose a specific geographic area, and will map the energy system in this area with the use of Energy-Together, we must expand the description of the energies flows with export out and import into the area.

We therefore adds an element: "Import of primary energy", at the place on the map where we calculate the transportable primary energy supplied to the system. We also adds an element: "Import of secondary energy", at the point where  secondary energy is supplied or produced in the system. In the final stage, where the energy is leaving the system because it is either converted to energy services or exported, we add two parts: "Exports of primary energy" and "Export of secondary energy."

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Storage of energy

When we will focus on a specific period of time, we have to add energy storage to energy system, as we do not need to use and export exact same amount of energy as we are extracting and importing. We can put energy in energy storage from one period to the next.

We put two boxes on the E2G map there where the energy flow to the geographical area. One part concerns the total energy resources in the area. The second part concerns the initial strage of primary energy, as we have already extracted. At the point where we add secondary energy to the system, we add an box that describes the secondary energy we have as initial energy storage. In the final stage, where the energy leaving the system we put two boxes on: "The end storage of primary energy" and "The end Storage of secondary energy."

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The total E2G map

The total E2G map

We have now defined to the whole Energy-Together map of the energy system in a geographical area and in a given time period.

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Examples of energy systems

More complex energy systems (composed of many small energy systems)

In order to grasp the more complex energy system, we place all conversion to energy services in a "box" al conversion to secondary energy in another "box", etc.

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The Danish Energy Flows

Energy flows in Denmark

In order to understand the complex energy system, we sort all conversion to energy services in a "box" al conversion to secondary energy in another "box", all transportation in a "Arrow" etc.

 

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Number of sectors in energy services

How many sectors are energy consumption divided in

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