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(busbar)=
# busbar
A node in the electricity grid that production, consumption, market and transmission objects can be connected to

|   |   |
|---|---|
|Input connections|{ref}`generator`, {ref}`pump`, {ref}`thermal`, {ref}`contract`, {ref}`market`, {ref}`ac_line`, {ref}`dc_line`, {ref}`battery`, {ref}`wind`, {ref}`solar`|
|Output connections|{ref}`dc_line`, {ref}`ac_line`, {ref}`wind`, {ref}`battery`, {ref}`thermal`, {ref}`pump`, {ref}`contract`, {ref}`generator`, {ref}`solar`, {ref}`market`|
|License|SHOP_OPEN|
|Release version|14.3.4.0|

```{contents}
:local:
:depth: 1
```



## Examples
  - [](power-flow-example)
  



## Attributes
```{code-cell} ipython3
:tags: ['remove-input', 'full-width']

from IPython.core.display import HTML
HTML("""<table id="busbar-table" class="display compact"></table>
<script>
enableDataTable(
  "#busbar-table",
  "/_static/data/busbar-attribute-table.json"
);
</script>
""")
```

(busbar:load)=
### load
<div class="attribute-meta">
Data type: timeseries. Unit: MW.
</div>

Load at the busbar.


(busbar:ptdf)=
### ptdf
<div class="attribute-meta">
Data type: sy. Unit: s: STRING and y: NO_UNIT.
</div>

Power transfer distribution factors describing change in flow for each ac line relative to change in generation at the busbar.


(busbar:energy_price)=
### energy_price
<div class="attribute-meta">
Data type: timeseries. Unit: NOK/MWH.
</div>

Dual value for the energy balance constraint at the busbar.


(busbar:power_deficit)=
### power_deficit
<div class="attribute-meta">
Data type: timeseries. Unit: MWH.
</div>

Power added to the busbar power balance to cover deficit of energy.


(busbar:power_excess)=
### power_excess
<div class="attribute-meta">
Data type: timeseries. Unit: MWH.
</div>

Power subtracted from the busbar power balance to remove excess of energy.