diff --git a/pkgs/development/python-modules/pyosoenergyapi/default.nix b/pkgs/development/python-modules/pyosoenergyapi/default.nix
new file mode 100644
index 000000000000..243c3abb483d
--- /dev/null
+++ b/pkgs/development/python-modules/pyosoenergyapi/default.nix
@@ -0,0 +1,51 @@
+{
+  lib,
+  aiohttp,
+  buildPythonPackage,
+  fetchFromGitHub,
+  loguru,
+  numpy,
+  setuptools,
+  unasync,
+  urllib3,
+  writableTmpDirAsHomeHook,
+}:
+
+buildPythonPackage rec {
+  pname = "pyosoenergyapi";
+  version = "1.2.4";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "osohotwateriot";
+    repo = "apyosohotwaterapi";
+    tag = version;
+    hash = "sha256-hpbmiSOLawKVSh7BGV70bRi45HCDKmdxEEhCOdJuIww=";
+  };
+
+  build-system = [
+    setuptools
+    unasync
+    writableTmpDirAsHomeHook
+  ];
+
+  dependencies = [
+    aiohttp
+    loguru
+    numpy
+    urllib3
+  ];
+
+  # Module has no tests
+  doCheck = false;
+
+  pythonImportsCheck = [ "pyosoenergyapi" ];
+
+  meta = {
+    description = "Python library to interface with the OSO Energy API";
+    homepage = "https://github.com/osohotwateriot/apyosohotwaterapi";
+    changelog = "https://github.com/osohotwateriot/apyosohotwaterapi/releases/tag/${version}";
+    license = lib.licenses.mit;
+    maintainers = [ lib.maintainers.jamiemagee ];
+  };
+}
diff --git a/pkgs/servers/home-assistant/component-packages.nix b/pkgs/servers/home-assistant/component-packages.nix
index a570436a8ba2..00ee13815ed8 100644
--- a/pkgs/servers/home-assistant/component-packages.nix
+++ b/pkgs/servers/home-assistant/component-packages.nix
@@ -4319,7 +4319,8 @@
       ];
     "osoenergy" =
       ps: with ps; [
-      ]; # missing inputs: pyosoenergyapi
+        pyosoenergyapi
+      ];
     "osramlightify" =
       ps: with ps; [
         lightify
@@ -7530,6 +7531,7 @@
     "opnsense"
     "opower"
     "oralb"
+    "osoenergy"
     "otbr"
     "otp"
     "ourgroceries"
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 48ae6ca764aa..4d8e96111f76 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -13590,6 +13590,8 @@ self: super: with self; {
 
   pyosmium = callPackage ../development/python-modules/pyosmium { inherit (pkgs) lz4; };
 
+  pyosoenergyapi = callPackage ../development/python-modules/pyosoenergyapi { };
+
   pyosohotwaterapi = callPackage ../development/python-modules/pyosohotwaterapi { };
 
   pyotb = callPackage ../development/python-modules/pyotb { };