diff --git a/src/supy/data_model/core.py b/src/supy/data_model/core.py
index f1ede376..1ca5b84a 100644
--- a/src/supy/data_model/core.py
+++ b/src/supy/data_model/core.py
@@ -37,6 +37,20 @@ class SUEWSConfig(BaseModel):
     class Config:
         extra = "allow"
 
+    @classmethod
+    def from_yaml(cls, path: str) -> "SUEWSConfig":
+        """Initialize SUEWSConfig from YAML file.
+
+        Args:
+            path (str): Path to YAML configuration file
+
+        Returns:
+            SUEWSConfig: Instance of SUEWSConfig initialized from YAML
+        """
+        with open(path, "r") as file:
+            config = yaml.load(file, Loader=yaml.FullLoader)
+        return cls(**config)
+
     def create_multi_index_columns(self, columns_file: str) -> pd.MultiIndex:
         """Create MultiIndex from df_state_columns.txt"""
         with open(columns_file, "r") as f:
diff --git a/src/supy/data_model/human_activity.py b/src/supy/data_model/human_activity.py
index 26e7ab34..b34c2dc3 100644
--- a/src/supy/data_model/human_activity.py
+++ b/src/supy/data_model/human_activity.py
@@ -3,7 +3,7 @@
 import pandas as pd
 from .type import ValueWithDOI, Reference
 from .profile import HourlyProfile, WeeklyProfile, DayProfile
-from .state import init_df_state
+from .type import init_df_state
 
 
 class IrrigationParams(
@@ -481,7 +481,7 @@ def from_df_state(cls, df: pd.DataFrame, grid_id: int) -> "AnthropogenicEmission
         # Reconstruct CO2 parameters
         co2 = CO2Params.from_df_state(df, grid_id)
 
-        return cls(startdls=startdls, enddls=enddls, heat=heat, co2=co2)
+        return cls(startdls=startdls, enddls=enddls, heat=heat.model_dump(), co2=co2.model_dump())
 
 class AnthropogenicHeat(
     BaseModel
diff --git a/src/supy/data_model/hydro.py b/src/supy/data_model/hydro.py
index a15df019..d52a8d54 100644
--- a/src/supy/data_model/hydro.py
+++ b/src/supy/data_model/hydro.py
@@ -1,8 +1,7 @@
 from pydantic import BaseModel, Field, PrivateAttr
 from typing import Optional
 import pandas as pd
-from .type import ValueWithDOI, Reference
-from .site import SurfaceType
+from .type import ValueWithDOI, Reference, SurfaceType
 import math
 
 
diff --git a/src/supy/data_model/model.py b/src/supy/data_model/model.py
index ac255291..43ddb4b9 100644
--- a/src/supy/data_model/model.py
+++ b/src/supy/data_model/model.py
@@ -7,7 +7,7 @@
 from enum import Enum
 
 from .type import ValueWithDOI, Reference
-from .state import init_df_state
+from .type import init_df_state
 
 
 class EmissionsMethod(Enum):
diff --git a/src/supy/data_model/state.py b/src/supy/data_model/state.py
index 4f468d81..3bc72244 100644
--- a/src/supy/data_model/state.py
+++ b/src/supy/data_model/state.py
@@ -1,9 +1,8 @@
-from dataclasses import Field
 from typing import Optional, Union, List, Literal, Type
 import pandas as pd
-from pydantic import BaseModel, field_validator, model_validator, PrivateAttr
+from pydantic import BaseModel, Field, field_validator, model_validator, PrivateAttr
 
-from .type import ValueWithDOI, Reference
+from .type import ValueWithDOI, Reference, init_df_state
 from .site import SurfaceType
 
 
diff --git a/src/supy/meson.build b/src/supy/meson.build
index 33be0426..c3a45147 100644
--- a/src/supy/meson.build
+++ b/src/supy/meson.build
@@ -69,8 +69,10 @@ py.install_sources(
         [
             'data_model/__init__.py',
             'data_model/core.py',
+            'data_model/hydro.py',
             'data_model/human_activity.py',
             'data_model/model.py',
+            'data_model/ohm.py',
             'data_model/profile.py',
             'data_model/site.py',
             'data_model/state.py',
diff --git a/src/supy/util/_config.py b/src/supy/util/_config.py
index 1179df98..2d0cec3b 100644
--- a/src/supy/util/_config.py
+++ b/src/supy/util/_config.py
@@ -5138,3 +5138,9 @@ def to_yaml(self, path: str = "./config-suews.yml"):
                 sort_keys=False,
                 allow_unicode=True,
             )
+
+def init_config_from_yaml(path: str = "./config-suews.yml") -> SUEWSConfig:
+    """Initialize SUEWSConfig from YAML file"""
+    with open(path, "r") as file:
+        config = yaml.load(file, Loader=yaml.FullLoader)
+    return SUEWSConfig(**config)
\ No newline at end of file