diff --git a/config/services/homeassistant.nix b/config/services/homeassistant.nix
index 64fcc51..271ff94 100644
--- a/config/services/homeassistant.nix
+++ b/config/services/homeassistant.nix
@@ -54,7 +54,6 @@
     ];
     customComponents = with pkgs.home-assistant-custom-components; [
       homematicip_local
-      pkgs.havartastorage
     ];
     config = {
       http = {
@@ -96,6 +95,223 @@
       #   organization = "home";
       #   bucket = "home_assistant";
       # };
+      # Modbus Varta element backup
+      modbus = {
+
+        name = "mb_varta";
+        type = "tcp";
+        host = "10.99.30.20"; # replace with your ip of the your varta;
+        port = 502;
+        delay = 1;
+        timeout = 3;
+        message_wait_milliseconds = 250;
+        sensors =
+          ### EMS Software Version { not for Varta link;
+          [
+            {
+              name = "mb_varta_EMS";
+              slave = 1;
+              address = 1000;
+              count = 17;
+              data_type = "string";
+              precision = 0;
+              scale = 1;
+            }
+            ### ENS Software Version { not for Varta link;
+            {
+              name = "mb_varta_ENS";
+              slave = 1;
+              address = 1017;
+              count = 17;
+              data_type = "string";
+              precision = 0;
+              scale = 1;
+            }
+            ### Software Version { not for Varta link;
+            {
+              name = "mb_varta_software";
+              slave = 1;
+              address = 1034;
+              count = 17;
+              data_type = "string";
+              precision = 0;
+              scale = 1;
+            }
+            ### Table version;
+            {
+              name = "mb_varta_table_version";
+              slave = 1;
+              address = 1051;
+              data_type = "uint16";
+              precision = "0";
+              scale = 1;
+              ### timestamp {- not working;
+            }
+            {
+              name = "mb_varta_timestamp";
+              slave = 1;
+              address = 1052;
+              data_type = "uint32";
+              swap = "word";
+              precision = 0;
+              scale = 1;
+            }
+            ### Serial Number;
+            {
+              name = "mb_varta_serial";
+              slave = 1;
+              address = 1054;
+              count = 10;
+              data_type = "string";
+              precision = 0;
+              scale = 1;
+            }
+            ### Number of Battery Modules installed;
+            {
+              name = "mb_varta_installed_batteries";
+              slave = 1;
+              address = 1064;
+              data_type = "uint16";
+              precision = 0;
+              scale = 1;
+            }
+            ### State;
+            {
+              name = "mb_varta_state";
+              slave = 1;
+              address = 1065;
+              data_type = "uint16";
+              precision = 0;
+              scale = 1;
+              unit_of_measurement = "State";
+            }
+            ### Active Power { positive=charge / negative: discharge;
+            {
+              name = "mb_varta_active_power";
+              slave = 1;
+              address = 1066;
+              data_type = "int16";
+              precision = 0;
+              scale = 1;
+              device_class = "power";
+              unit_of_measurement = "W";
+            }
+            ### Apparent Power { positive=charge / negative: discharge;
+            {
+              name = "mb_varta_apparent_power";
+              slave = 1;
+              address = 1067;
+              data_type = "int16";
+              precision = 0;
+              scale = 1;
+              device_class = "apparent_power";
+              unit_of_measurement = "VA";
+            }
+            ### State of Charge;
+            {
+              name = "mb_varta_SOC";
+              slave = 1;
+              address = 1068;
+              data_type = "uint16";
+              precision = 0;
+              scale = 1;
+              device_class = "battery";
+              unit_of_measurement = "%";
+            }
+            ### energy counter AC{>DC - not sure if correct;
+            {
+              name = "mb_varta_ACDC";
+              slave = 1;
+              address = 1069;
+              data_type = "uint32";
+              swap = "word";
+              precision = 0;
+              scale = 1;
+              device_class = "energy";
+              unit_of_measurement = "Wh";
+              state_class = "total_increasing";
+            }
+            ### Installed capacity;
+            {
+              name = "mb_varta_capacity";
+              slave = 1;
+              address = 1071;
+              data_type = "uint16";
+              precision = 0;
+              scale = 10;
+              device_class = "energy";
+              unit_of_measurement = "Wh";
+            }
+            ### Grid Power;
+            {
+              name = "mb_varta_grid_power";
+              slave = 1;
+              address = 1078;
+              data_type = "int16";
+              precision = 0;
+              scale = 1;
+              device_class = "power";
+              unit_of_measurement = "W";
+            }
+          ];
+      };
+
+      # Varta input/output
+      template.sensor = [
+        {
+          name = "Varta Input Power";
+          unit_of_measurement = "W";
+          state_class = "measurement";
+          device_class = "power";
+          state = ''
+            {% if states('sensor.mb_varta_active_power') | float(0) >= 0 %}
+            {% set varta_in = states('sensor.mb_varta_active_power') | float(0) %}
+            {% else %}
+            {% set varta_in = 0 %}
+            {% endif %}
+            {{ varta_in }}
+          '';
+
+        }
+        {
+          name = "Varta Output Power";
+          unit_of_measurement = "W";
+          state_class = "measurement";
+          device_class = "power";
+          state = ''
+            {% if states('sensor.mb_varta_active_power') | float(0) <= 0 %}
+            {% set varta_out = states('sensor.mb_varta_active_power') | float(0) *-1 %}
+            {% else %}
+            {% set varta_out = 0 %}
+            {% endif %}
+            {{ varta_out }}
+          '';
+        }
+      ];
+
+      ##Grid
+      sensor = {
+
+        platform = "template";
+        sensors = {
+          mb_varta_status = {
+            friendly_name = "Varta Status";
+            value_template = ''
+              {% set mapper =  {
+                  '0' : 'Busy',
+                  '1' : 'Run',
+                  '2' : 'Charge',
+                  '3' : 'Discharge',
+                  '4' : 'Standby',
+                  '5' : 'Error',
+                  '6' : 'Service',
+                  '7' : 'Islanding' } %}
+              {% set state =  states.sensor.mb_varta_state.state %}
+              {{ mapper[state] if state in mapper else 'Unknown' }}
+            '';
+          };
+        };
+      };
     };
     extraPackages =
       python3Packages: with python3Packages; [