diff --git a/homeassistant/components/hardkernel/config_flow.py b/homeassistant/components/hardkernel/config_flow.py
index cf70adae55a..5fa3611aa86 100644
--- a/homeassistant/components/hardkernel/config_flow.py
+++ b/homeassistant/components/hardkernel/config_flow.py
@@ -18,7 +18,4 @@ class HardkernelConfigFlow(ConfigFlow, domain=DOMAIN):
         self, data: dict[str, Any] | None = None
     ) -> ConfigFlowResult:
         """Handle the initial step."""
-        if self._async_current_entries():
-            return self.async_abort(reason="single_instance_allowed")
-
         return self.async_create_entry(title="Hardkernel", data={})
diff --git a/homeassistant/components/hardkernel/manifest.json b/homeassistant/components/hardkernel/manifest.json
index 2a528a5173e..aca1b207f4f 100644
--- a/homeassistant/components/hardkernel/manifest.json
+++ b/homeassistant/components/hardkernel/manifest.json
@@ -6,5 +6,6 @@
   "config_flow": false,
   "dependencies": ["hardware"],
   "documentation": "https://www.home-assistant.io/integrations/hardkernel",
-  "integration_type": "hardware"
+  "integration_type": "hardware",
+  "single_config_entry": true
 }
diff --git a/homeassistant/components/homeassistant_green/config_flow.py b/homeassistant/components/homeassistant_green/config_flow.py
index 4b71c7f1056..3a015faa11a 100644
--- a/homeassistant/components/homeassistant_green/config_flow.py
+++ b/homeassistant/components/homeassistant_green/config_flow.py
@@ -55,9 +55,6 @@ class HomeAssistantGreenConfigFlow(ConfigFlow, domain=DOMAIN):
         self, data: dict[str, Any] | None = None
     ) -> ConfigFlowResult:
         """Handle the initial step."""
-        if self._async_current_entries():
-            return self.async_abort(reason="single_instance_allowed")
-
         return self.async_create_entry(title="Home Assistant Green", data={})
 
 
diff --git a/homeassistant/components/homeassistant_green/manifest.json b/homeassistant/components/homeassistant_green/manifest.json
index d543d562ee3..78da50603df 100644
--- a/homeassistant/components/homeassistant_green/manifest.json
+++ b/homeassistant/components/homeassistant_green/manifest.json
@@ -6,5 +6,6 @@
   "config_flow": false,
   "dependencies": ["hardware", "homeassistant_hardware"],
   "documentation": "https://www.home-assistant.io/integrations/homeassistant_green",
-  "integration_type": "hardware"
+  "integration_type": "hardware",
+  "single_config_entry": true
 }
diff --git a/homeassistant/components/homeassistant_green/strings.json b/homeassistant/components/homeassistant_green/strings.json
index 9066ca64e5c..13507439e4b 100644
--- a/homeassistant/components/homeassistant_green/strings.json
+++ b/homeassistant/components/homeassistant_green/strings.json
@@ -21,7 +21,6 @@
     "abort": {
       "not_hassio": "[%key:component::homeassistant_hardware::silabs_multiprotocol_hardware::options::abort::not_hassio%]",
       "read_hw_settings_error": "Failed to read hardware settings",
-      "single_instance_allowed": "[%key:common::config_flow::abort::single_instance_allowed%]",
       "write_hw_settings_error": "Failed to write hardware settings"
     }
   }
diff --git a/homeassistant/components/homeassistant_yellow/config_flow.py b/homeassistant/components/homeassistant_yellow/config_flow.py
index 1f4d150e49b..9edc5009171 100644
--- a/homeassistant/components/homeassistant_yellow/config_flow.py
+++ b/homeassistant/components/homeassistant_yellow/config_flow.py
@@ -77,9 +77,6 @@ class HomeAssistantYellowConfigFlow(BaseFirmwareConfigFlow, domain=DOMAIN):
         self, data: dict[str, Any] | None = None
     ) -> ConfigFlowResult:
         """Handle the initial step."""
-        if self._async_current_entries():
-            return self.async_abort(reason="single_instance_allowed")
-
         # We do not actually use any portion of `BaseFirmwareConfigFlow` beyond this
         await self._probe_firmware_type()
 
diff --git a/homeassistant/components/homeassistant_yellow/manifest.json b/homeassistant/components/homeassistant_yellow/manifest.json
index a9715003172..caf4d32c746 100644
--- a/homeassistant/components/homeassistant_yellow/manifest.json
+++ b/homeassistant/components/homeassistant_yellow/manifest.json
@@ -6,5 +6,6 @@
   "config_flow": false,
   "dependencies": ["hardware", "homeassistant_hardware"],
   "documentation": "https://www.home-assistant.io/integrations/homeassistant_yellow",
-  "integration_type": "hardware"
+  "integration_type": "hardware",
+  "single_config_entry": true
 }
diff --git a/homeassistant/components/rhasspy/config_flow.py b/homeassistant/components/rhasspy/config_flow.py
index 114d74d4d05..ea79f6b8845 100644
--- a/homeassistant/components/rhasspy/config_flow.py
+++ b/homeassistant/components/rhasspy/config_flow.py
@@ -20,9 +20,6 @@ class RhasspyConfigFlow(ConfigFlow, domain=DOMAIN):
         self, user_input: dict[str, Any] | None = None
     ) -> ConfigFlowResult:
         """Handle the initial step."""
-        if self._async_current_entries():
-            return self.async_abort(reason="single_instance_allowed")
-
         if user_input is None:
             return self.async_show_form(step_id="user", data_schema=vol.Schema({}))
 
diff --git a/homeassistant/components/rhasspy/manifest.json b/homeassistant/components/rhasspy/manifest.json
index 2675935618c..f3496f7eeab 100644
--- a/homeassistant/components/rhasspy/manifest.json
+++ b/homeassistant/components/rhasspy/manifest.json
@@ -5,5 +5,6 @@
   "config_flow": true,
   "dependencies": ["intent"],
   "documentation": "https://www.home-assistant.io/integrations/rhasspy",
-  "iot_class": "local_push"
+  "iot_class": "local_push",
+  "single_config_entry": true
 }
diff --git a/homeassistant/components/rhasspy/strings.json b/homeassistant/components/rhasspy/strings.json
index 4d2111ebd8a..3d574d30117 100644
--- a/homeassistant/components/rhasspy/strings.json
+++ b/homeassistant/components/rhasspy/strings.json
@@ -4,9 +4,6 @@
       "user": {
         "description": "Do you want to enable Rhasspy support?"
       }
-    },
-    "abort": {
-      "single_instance_allowed": "[%key:common::config_flow::abort::single_instance_allowed%]"
     }
   }
 }
diff --git a/homeassistant/components/rpi_power/config_flow.py b/homeassistant/components/rpi_power/config_flow.py
index c44bb65d79a..0151a92856d 100644
--- a/homeassistant/components/rpi_power/config_flow.py
+++ b/homeassistant/components/rpi_power/config_flow.py
@@ -37,8 +37,6 @@ class RPiPowerFlow(DiscoveryFlowHandler[Awaitable[bool]], domain=DOMAIN):
         self, data: dict[str, Any] | None = None
     ) -> ConfigFlowResult:
         """Handle a flow initialized by onboarding."""
-        if self._async_current_entries():
-            return self.async_abort(reason="single_instance_allowed")
         has_devices = await self._discovery_function(self.hass)
 
         if not has_devices:
diff --git a/homeassistant/components/rpi_power/manifest.json b/homeassistant/components/rpi_power/manifest.json
index 7da5897c00d..d5704f61564 100644
--- a/homeassistant/components/rpi_power/manifest.json
+++ b/homeassistant/components/rpi_power/manifest.json
@@ -6,5 +6,6 @@
   "documentation": "https://www.home-assistant.io/integrations/rpi_power",
   "iot_class": "local_polling",
   "loggers": ["rpi_bad_power"],
-  "requirements": ["rpi-bad-power==0.1.0"]
+  "requirements": ["rpi-bad-power==0.1.0"],
+  "single_config_entry": true
 }
diff --git a/homeassistant/components/rpi_power/strings.json b/homeassistant/components/rpi_power/strings.json
index 9a46ca1e10e..796a973335b 100644
--- a/homeassistant/components/rpi_power/strings.json
+++ b/homeassistant/components/rpi_power/strings.json
@@ -7,7 +7,6 @@
       }
     },
     "abort": {
-      "single_instance_allowed": "[%key:common::config_flow::abort::single_instance_allowed%]",
       "no_devices_found": "Can't find the system class needed for this component, make sure that your kernel is recent and the hardware is supported"
     }
   }
diff --git a/homeassistant/generated/integrations.json b/homeassistant/generated/integrations.json
index 7d92e853024..4074ceb6ecd 100644
--- a/homeassistant/generated/integrations.json
+++ b/homeassistant/generated/integrations.json
@@ -5113,7 +5113,8 @@
       "name": "Rhasspy",
       "integration_type": "hub",
       "config_flow": true,
-      "iot_class": "local_push"
+      "iot_class": "local_push",
+      "single_config_entry": true
     },
     "ridwell": {
       "name": "Ridwell",