diff --git a/pkgs/development/python-modules/iso4217/default.nix b/pkgs/development/python-modules/iso4217/default.nix
new file mode 100644
index 000000000000..58d9ef5ffbd5
--- /dev/null
+++ b/pkgs/development/python-modules/iso4217/default.nix
@@ -0,0 +1,52 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, fetchurl
+, pytestCheckHook
+, python
+}:
+let
+  table = fetchurl {
+    # See https://github.com/dahlia/iso4217/blob/main/setup.py#L18
+    url = "http://www.currency-iso.org/dam/downloads/lists/list_one.xml";
+    sha256 = "0frhicc7s8gqglr41hzx61fic3ckvr4sg773ahp1s28n5by3y7ac";
+  };
+in
+buildPythonPackage rec {
+  pname = "iso4217";
+  version = "1.6";
+
+  src = fetchFromGitHub {
+    owner = "dahlia";
+    repo = pname;
+    rev = version;
+    sha256 = "0mdpf5a0xr5lrcfgvqi1sdn7ln2w6pkc3lg0laqkbx5mhxky0fla";
+  };
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  preBuild = ''
+    # The table is already downloaded
+    export ISO4217_DOWNLOAD=0
+    # Copy the table file to satifiy the build process
+    cp -r ${table} $pname/table.xml
+  '';
+
+  postInstall = ''
+    # Copy the table file
+    cp -r ${table} $out/${python.sitePackages}/$pname/table.xml
+  '';
+
+  pytestFlagsArray = [ "$pname/test.py" ];
+
+  pythonImportsCheck = [ "iso4217" ];
+
+  meta = with lib; {
+    description = "ISO 4217 currency data package for Python";
+    homepage = "https://github.com/dahlia/iso4217";
+    license = with licenses; [ publicDomain ];
+    maintainers = with maintainers; [ fab ];
+  };
+}
diff --git a/pkgs/development/python-modules/pyefergy/default.nix b/pkgs/development/python-modules/pyefergy/default.nix
new file mode 100644
index 000000000000..042b6a858fa4
--- /dev/null
+++ b/pkgs/development/python-modules/pyefergy/default.nix
@@ -0,0 +1,42 @@
+{ lib
+, aiohttp
+, buildPythonPackage
+, fetchFromGitHub
+, iso4217
+, pytestCheckHook
+, pythonOlder
+, pytz
+}:
+
+buildPythonPackage rec {
+  pname = "pyefergy";
+  version = "0.1.0";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.8";
+
+  src = fetchFromGitHub {
+    owner = "tkdrob";
+    repo = pname;
+    rev = version;
+    sha256 = "0nm7dc5q4wvdpqxpirlc4nwm68lf3n2df6j5yy4m8wr294yb7a1k";
+  };
+
+  propagatedBuildInputs = [
+    aiohttp
+    iso4217
+    pytz
+  ];
+
+  # Project has no tests
+  doCheck = false;
+
+  pythonImportsCheck = [ "pyefergy" ];
+
+  meta = with lib; {
+    description = "Python API library for Efergy energy meters";
+    homepage = "https://github.com/tkdrob/pyefergy";
+    license = with licenses; [ mit ];
+    maintainers = with maintainers; [ fab ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 7f370f947312..57d37b3a1e77 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3767,6 +3767,8 @@ in {
 
   iso-639 = callPackage ../development/python-modules/iso-639 { };
 
+  iso4217 = callPackage ../development/python-modules/iso4217 { };
+
   iso8601 = callPackage ../development/python-modules/iso8601 { };
 
   isodate = callPackage ../development/python-modules/isodate { };
@@ -6200,6 +6202,8 @@ in {
 
   pyee = callPackage ../development/python-modules/pyee { };
 
+  pyefergy = callPackage ../development/python-modules/pyefergy { };
+
   pyeight = callPackage ../development/python-modules/pyeight { };
 
   pyelftools = callPackage ../development/python-modules/pyelftools { };