Energy demands

Heating demand
Example data describes a district in Germany with 100 buildings.
kW
Upload time series of heating demand with hourly resolution (8760 time steps per year). Check example file.
Cooling demand
Example data describes a district in Germany with 100 buildings.
kW
Upload time series of cooling demand with hourly resolution (8760 time steps per year). Check example file.
Electricity demand
Example data describes a district in Germany with 100 buildings.
kW
Upload time series of electricity demand with hourly resolution (8760 time steps per year). Check example file.
Hydrogen demand
Example data describes a district in Germany with 100 buildings.
kW
Upload time series of hydrogen demand with hourly resolution (8760 time steps per year). Check example file.

Location  

Upload weather data

If your location is not available, you can upload weather data here. Any uploaded weather time series is used with priority (instead corresponding time series of selected location).

Upload time series for ambient air temperature with hourly resolution (8760 time steps per year). Air temperature data is used for calculation of air source heat pumps only. Uploaded data replaces default data of the selected location. Check example file.
Upload time series for solar irradiance with hourly resolution (8760 time steps per year). Solar irradiance data is used for calculation of photovoltaic and solar thermal collectors only. Uploaded data replaces default data of the selected location. Check example file.
Upload time series for wind speed with hourly resolution (8760 time steps per year). Wind speed data is used for calculation of wind turbines only. Uploaded data replaces default data of the selected location. Check example file.
Help_question_mark_explanation

Renewable energies


Heating & cooling technologies


Natural gas technologies


Biomass technologies



Hydrogen technologies


Energy storages



Energy imports

Electricity

€/kWh
€/kWh

€/kW
kW
Maximum power that can be drawn from the power grid.
MWh/year
Maximum annual energy drawn from the electricity grid.

Natural gas

€/kWh

€/kW
€/kWh
kW
Maximum gas demand that can be drawn from the gas grid.
MWh/year
Maximum annual energy drawn from the gas grid.

Biomass

€/kWh

MWh/year
Maximum available biomass.

Hydrogen

€/kWh

MWh/year
Maximum imported hydrogen.

Waste

€/kWh

MWh/year
Maximum available waste.

Ecological impact

CO2 tax

€/tCO2
Tax on CO2 emissions due to burning natural gas, biomass or waste.

CO2 emissions

g/kWh
g/kWh
g/kWh
g/kWh
g/kWh

CO₂ emission credit for feed-in

g/kWh
g/kWh

Optimization

Optimization focus
Annual costs vs. CO2 emissions

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''0'' means only cost optimization; ''1'' means only CO2 optimization.

Investment annualization

%
The interest rate affects the annualization of the investments according to VDI 2067.
years
The project lifetime affects annualization of investments according to VDI 2067.

Design day clustering

days
The optimization is based on design day clustering. The higher the number of design days, the more accurate the optimization. Usually, 12 or more design days lead to satisfying results.

Conservative design

If checked, it is ensured that capacities of non-renewable technologies can meet all peak demands (e.g. heat demand at coldest day of the year). In this case, renewable energies are neglected for covering peak demands. This may lead to a more conservative energy system design.

Reference scenario

The reference scenario is used to calculate cost and CO₂ savings of the optimized energy hub system in comparison with a conventional state-of-the-art system.

Heating (reference technology)

Consider gas boiler as heating reference technology.

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Cooling (reference technology)

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Electricity generation (reference technology)

If checked, electricity demands are primarily covered by a CHP unit (including electricity demand of electrolyzer and chiller). CHP heat is used to cover heating demands. If heat from CHP exceeds heat demand, CHP unit operates at lower load and may not cover all electricity demands. In this case, additional power is drawn from the electricity grid.