Nomenclature and Abbreviations
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| **General:**              |                                                   |
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| _com                      | community                                         |
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| _pot                      | potential                                         |
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| _base                     | values for current situation                      |
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| **Data type:**            |                                                   |
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| df                        | dataframe                                         |
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| ds                        | dataseries                                        |
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| list                      | list                                              |
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| **Energy flows:**         |                                                   |
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| d                         | demand                                            |
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| m                         | import                                            |
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| u                         | technology input                                  |
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| v                         | technology output                                 |
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| l                         | losses                                            |
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| s                         | supply                                            |
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| src                       | source                                            |
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| **Technologies:**         |                                                   |
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| _pv                       | solar photovoltaic                                |
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| _solar                    | solar thermal                                     |
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| _wp                       | wind power                                        |
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| _grid                     | grid supply (electricity)                         |
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| _hp                       | heat pump                                         |
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| _eh                       | electric heater                                   |
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| _ob                       | oil boiler                                        |
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| _wb                       | wood boiler                                       |
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| _gb                       | gas boiler                                        |
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| _dh                       | district heating                                  |
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| _tes                      | thermal energy storage                            |
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| _bes                      | battery energy storage                            |
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| _hydro                    | hydro power                                       |
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| _bm                       | biomass (collective)                              |
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| _hg                       | hydrothermal gasification                         |
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| _agu                      | anaerobic digestion upgrade                       |
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| _aguh                     | anaerobic digestion upgrade hydrogen              |
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| _aguc                     | anaerobic digestion CHP                           |
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| _wgu                      | wood gasification upgrade                         |
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| _wguh                     | wood gasification upgrade hydrogen                |
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| _wguc                     | wood gasification CHP                             |
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| _hydp                     | hydrogen production                               |
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| _chpgt                    | CHP gas turbine                                   |
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| _gtcp                     | gas turbine (central plant)                       |
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| _st                       | steam turbine                                     |
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| _wbcp                     | wood boiler (central plant)                       |
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| _wte                      | waste-to-energy plant                             |
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| _hpcp                     | heat pump (central plant)                         |
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| **Technology parameters:**|                                                   |
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| _p                        | system size (kW or kWp)                           |
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| sos                       | state of storage (-)                              |
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| _q                        | energy level, e.g. in storage (kWh)               |
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| **Energy carriers:**      |                                                   |
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| _h                        | heat                                              |
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| _e                        | electricity                                       |
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| _gas                      | gas                                               |
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| _oil                      | oil                                               |
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| _wd                       | wood                                              |
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| _msw                      | municipal solid waste                             |
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| _bm                       | biomass                                           |
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| _steam                    | steam                                             |
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| **Emission carriers:**    |                                                   |
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| _co2                      | CO2 (kg)                                          |
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| **Time resolution:**      |                                                   |
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| _hr                       | hourly (mostly omitted)                           |
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| _yr                       | annual                                            |
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| **Aggregation resolution:**|                                                  |
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| _bdg                      | building level                                    |
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| **Iteration indeces:**    |                                                   |
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| _t                        | time                                              |
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| **Examples:**             |                                                   |
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| u_e_hp                    | electricity input to heat pump (kWh)              |
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| v_h_hp                    | heat output from heat pump (kWh)                  |
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| d_e_yr                    | annual electricity demand (kWh)                   |
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