diff --git a/pkgs/development/python-modules/smart-meter-texas/default.nix b/pkgs/development/python-modules/smart-meter-texas/default.nix
new file mode 100644
index 000000000000..abdcd7317bc5
--- /dev/null
+++ b/pkgs/development/python-modules/smart-meter-texas/default.nix
@@ -0,0 +1,43 @@
+{ lib
+, buildPythonPackage
+, pythonOlder
+, fetchFromGitHub
+, aiohttp
+, python-dateutil
+, tenacity
+}:
+
+buildPythonPackage rec {
+  pname = "smart-meter-texas";
+  version = "0.4.3";
+
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "grahamwetzler";
+    repo = "smart-meter-texas";
+    rev = "v${version}";
+    sha256 = "09n03wbyjh1b1gsiibf17fg86x7k1i1r1kpp94p7w1lcdbmn8v5c";
+  };
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "pytest-runner" ""
+  '';
+
+  propagatedBuildInputs = [
+    aiohttp
+    python-dateutil
+    tenacity
+  ];
+
+  # no tests implemented
+  doCheck = false;
+
+  meta = with lib; {
+    description = "Connect to and retrieve data from the unofficial Smart Meter Texas API";
+    homepage = "https://github.com/grahamwetzler/smart-meter-texas";
+    license = licenses.mit;
+    maintainers = with maintainers; [ dotlambda ];
+  };
+}
diff --git a/pkgs/servers/home-assistant/component-packages.nix b/pkgs/servers/home-assistant/component-packages.nix
index 303d9c08ffb3..b51cc9f0ba6d 100644
--- a/pkgs/servers/home-assistant/component-packages.nix
+++ b/pkgs/servers/home-assistant/component-packages.nix
@@ -767,7 +767,7 @@
     "slide" = ps: with ps; [ ]; # missing inputs: goslide-api
     "sma" = ps: with ps; [ pysma ];
     "smappee" = ps: with ps; [ aiohttp-cors pysmappee ];
-    "smart_meter_texas" = ps: with ps; [ ]; # missing inputs: smart-meter-texas
+    "smart_meter_texas" = ps: with ps; [ smart-meter-texas ];
     "smarthab" = ps: with ps; [ smarthab ];
     "smartthings" = ps: with ps; [ aiohttp-cors hass-nabucasa pysmartapp pysmartthings ];
     "smarttub" = ps: with ps; [ python-smarttub ];
diff --git a/pkgs/servers/home-assistant/default.nix b/pkgs/servers/home-assistant/default.nix
index 00d448977bf8..4b23b4a2bc42 100644
--- a/pkgs/servers/home-assistant/default.nix
+++ b/pkgs/servers/home-assistant/default.nix
@@ -658,6 +658,7 @@ in with py.pkgs; buildPythonApplication rec {
     "sleepiq"
     "sma"
     "smappee"
+    "smart_meter_texas"
     "smarthab"
     "smartthings"
     "smarttub"
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index d1e853cb1479..f79b7a4fc76e 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -7990,6 +7990,8 @@ in {
 
   sly = callPackage ../development/python-modules/sly { };
 
+  smart-meter-texas = callPackage ../development/python-modules/smart-meter-texas { };
+
   smart-open = callPackage ../development/python-modules/smart-open { };
 
   smarthab = callPackage ../development/python-modules/smarthab { };