Add simple source facade

src/oemof_tabular_plugins/general/__init__.py

@@ -4,3 +4,12 @@
 from .pre_processing.pre_processing import calculate_annuity
 from .pre_processing.pre_processing import logger
 from .post_processing.gui import prepare_app
+
+from oemof.tabular.facades import TYPEMAP
+from .facades import SimpleSource
+
+OTP_TYPEMAP = {
+    "source": SimpleSource,
+}
+
+OTP_TYPEMAP.update(TYPEMAP)

src/oemof_tabular_plugins/general/facades/__init__.py

@@ -0,0 +1 @@
+from .source import SimpleSource

src/oemof_tabular_plugins/general/facades/source.py

@@ -0,0 +1,32 @@
+from dataclasses import field
+from typing import Sequence, Union
+
+from oemof.solph.buses import Bus
+from oemof.solph.components import Source
+from oemof.solph.flows import Flow
+
+from oemof.tabular._facade import Facade, dataclass_facade
+
+
+@dataclass_facade
+class SimpleSource(Source, Facade):
+    r"""Volatile element with one output. This class can be used to model
+    Sun when connected to a converter with adequate conversion factors
+
+
+    Parameters
+    ----------
+    bus: oemof.solph.Bus
+        An oemof bus instance where the generator is connected to
+    """
+
+    bus: Bus
+
+    carrier: str = ""
+
+    tech: str = ""
+
+    def build_solph_components(self):
+        """ """
+
+        self.outputs.update({self.bus: Flow()})

src/oemof_tabular_plugins/wefe/__init__.py

@@ -1,7 +1,7 @@
 from oemof_tabular_plugins.wefe.constraints.constraint_facades import (
     CONSTRAINT_TYPE_MAP,
 )
-from oemof.tabular.facades import TYPEMAP
+from oemof.tabular.facades import OTP_TYPEMAP
 from .facades import (
     PVPanel,
     MIMO,
@@ -22,4 +22,4 @@
     "apv": APV,
 }
 
-WEFE_TYPEMAP.update(TYPEMAP)
+WEFE_TYPEMAP.update(OTP_TYPEMAP)