diff --git a/.coveragerc b/.coveragerc
index 2f60e74480f..3b6c140c0f1 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -152,7 +152,6 @@ omit =
     homeassistant/components/clicksend/notify.py
     homeassistant/components/clicksend_tts/notify.py
     homeassistant/components/cmus/media_player.py
-    homeassistant/components/co2signal/*
     homeassistant/components/coinbase/sensor.py
     homeassistant/components/comed_hourly_pricing/sensor.py
     homeassistant/components/comfoconnect/fan.py
diff --git a/homeassistant/components/co2signal/__init__.py b/homeassistant/components/co2signal/__init__.py
index a9c6422b4c6..50a453ac5f3 100644
--- a/homeassistant/components/co2signal/__init__.py
+++ b/homeassistant/components/co2signal/__init__.py
@@ -1 +1,20 @@
-"""The co2signal component."""
+"""The CO2 Signal integration."""
+from __future__ import annotations
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+
+from .const import DOMAIN  # noqa: F401
+
+PLATFORMS = ["sensor"]
+
+
+async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+    """Set up CO2 Signal from a config entry."""
+    hass.config_entries.async_setup_platforms(entry, PLATFORMS)
+    return True
+
+
+async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+    """Unload a config entry."""
+    return await hass.config_entries.async_unload_platforms(entry, PLATFORMS)
diff --git a/homeassistant/components/co2signal/config_flow.py b/homeassistant/components/co2signal/config_flow.py
new file mode 100644
index 00000000000..044dd95cc3b
--- /dev/null
+++ b/homeassistant/components/co2signal/config_flow.py
@@ -0,0 +1,249 @@
+"""Config flow for Co2signal integration."""
+from __future__ import annotations
+
+import logging
+from typing import Any
+
+import CO2Signal
+import voluptuous as vol
+
+from homeassistant import config_entries
+from homeassistant.const import CONF_API_KEY, CONF_LATITUDE, CONF_LONGITUDE, CONF_TOKEN
+from homeassistant.data_entry_flow import FlowResult
+from homeassistant.exceptions import HomeAssistantError
+import homeassistant.helpers.config_validation as cv
+
+from .const import CONF_COUNTRY_CODE, DOMAIN
+from .util import get_extra_name
+
+_LOGGER = logging.getLogger(__name__)
+
+TYPE_USE_HOME = "Use home location"
+TYPE_SPECIFY_COORDINATES = "Specify coordinates"
+TYPE_SPECIFY_COUNTRY = "Specify country code"
+
+
+def _get_entry_type(config: dict) -> str:
+    """Get entry type from the configuration."""
+    if CONF_LATITUDE in config:
+        return TYPE_SPECIFY_COORDINATES
+
+    if CONF_COUNTRY_CODE in config:
+        return TYPE_SPECIFY_COUNTRY
+
+    return TYPE_USE_HOME
+
+
+def _validate_info(hass, config: dict) -> dict:
+    """Validate the passed in info."""
+    if CONF_COUNTRY_CODE in config:
+        latitude = None
+        longitude = None
+    else:
+        latitude = config.get(CONF_LATITUDE, hass.config.latitude)
+        longitude = config.get(CONF_LONGITUDE, hass.config.longitude)
+
+    try:
+        data = CO2Signal.get_latest(
+            config[CONF_API_KEY],
+            config.get(CONF_COUNTRY_CODE),
+            latitude,
+            longitude,
+            wait=False,
+        )
+
+    except ValueError as err:
+        err_str = str(err)
+
+        if "Invalid authentication credentials" in err_str:
+            raise InvalidAuth from err
+        if "API rate limit exceeded." in err_str:
+            raise APIRatelimitExceeded from err
+
+        _LOGGER.exception("Unexpected exception")
+        raise UnknownError from err
+    except Exception as err:  # pylint: disable=broad-except
+        _LOGGER.exception("Unexpected exception")
+        raise UnknownError from err
+
+    else:
+        if data.get("status") != "ok":
+            _LOGGER.exception("Unexpected response: %s", data)
+            raise UnknownError
+
+    return data
+
+
+class CO2Error(HomeAssistantError):
+    """Base error."""
+
+
+class InvalidAuth(CO2Error):
+    """Raised when invalid authentication credentials are provided."""
+
+
+class APIRatelimitExceeded(CO2Error):
+    """Raised when the API rate limit is exceeded."""
+
+
+class UnknownError(CO2Error):
+    """Raised when an unknown error occurs."""
+
+
+class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
+    """Handle a config flow for Co2signal."""
+
+    VERSION = 1
+    _data: dict | None
+
+    async def async_step_import(self, import_info):
+        """Set the config entry up from yaml."""
+        data = {CONF_API_KEY: import_info[CONF_TOKEN]}
+
+        if CONF_COUNTRY_CODE in import_info:
+            data[CONF_COUNTRY_CODE] = import_info[CONF_COUNTRY_CODE]
+            new_entry_type = TYPE_SPECIFY_COUNTRY
+        elif (
+            CONF_LATITUDE in import_info
+            and import_info[CONF_LATITUDE] != self.hass.config.latitude
+            and import_info[CONF_LONGITUDE] != self.hass.config.longitude
+        ):
+            data[CONF_LATITUDE] = import_info[CONF_LATITUDE]
+            data[CONF_LONGITUDE] = import_info[CONF_LONGITUDE]
+            new_entry_type = TYPE_SPECIFY_COORDINATES
+        else:
+            new_entry_type = TYPE_USE_HOME
+
+        for entry in self._async_current_entries(include_ignore=True):
+            if entry.source == config_entries.SOURCE_IGNORE:
+                continue
+
+            if (cur_entry_type := _get_entry_type(entry.data)) != new_entry_type:
+                continue
+
+            if cur_entry_type == TYPE_USE_HOME and new_entry_type == TYPE_USE_HOME:
+                return self.async_abort(reason="already_configured")
+
+            if (
+                cur_entry_type == TYPE_SPECIFY_COUNTRY
+                and data[CONF_COUNTRY_CODE] == entry.data[CONF_COUNTRY_CODE]
+            ):
+                return self.async_abort(reason="already_configured")
+
+            if (
+                cur_entry_type == TYPE_SPECIFY_COORDINATES
+                and data[CONF_LATITUDE] == entry.data[CONF_LATITUDE]
+                and data[CONF_LONGITUDE] == entry.data[CONF_LONGITUDE]
+            ):
+                return self.async_abort(reason="already_configured")
+
+        try:
+            await self.hass.async_add_executor_job(_validate_info, self.hass, data)
+        except CO2Error:
+            return self.async_abort(reason="unknown")
+
+        return self.async_create_entry(
+            title=get_extra_name(self.hass, data) or "CO2 Signal", data=data
+        )
+
+    async def async_step_user(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
+        """Handle the initial step."""
+        data_schema = vol.Schema(
+            {
+                vol.Required("location", default=TYPE_USE_HOME): vol.In(
+                    (
+                        TYPE_USE_HOME,
+                        TYPE_SPECIFY_COORDINATES,
+                        TYPE_SPECIFY_COUNTRY,
+                    )
+                ),
+                vol.Required(CONF_API_KEY): cv.string,
+            }
+        )
+
+        if user_input is None:
+            return self.async_show_form(
+                step_id="user",
+                data_schema=data_schema,
+            )
+
+        data = {CONF_API_KEY: user_input[CONF_API_KEY]}
+
+        if user_input["location"] == TYPE_SPECIFY_COORDINATES:
+            self._data = data
+            return await self.async_step_coordinates()
+
+        if user_input["location"] == TYPE_SPECIFY_COUNTRY:
+            self._data = data
+            return await self.async_step_country()
+
+        return await self._validate_and_create("user", data_schema, data)
+
+    async def async_step_coordinates(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
+        """Validate coordinates."""
+        data_schema = vol.Schema(
+            {
+                vol.Required(
+                    CONF_LATITUDE,
+                ): cv.latitude,
+                vol.Required(
+                    CONF_LONGITUDE,
+                ): cv.longitude,
+            }
+        )
+        if user_input is None:
+            return self.async_show_form(step_id="coordinates", data_schema=data_schema)
+
+        assert self._data is not None
+
+        return await self._validate_and_create(
+            "coordinates", data_schema, {**self._data, **user_input}
+        )
+
+    async def async_step_country(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
+        """Validate country."""
+        data_schema = vol.Schema(
+            {
+                vol.Required(CONF_COUNTRY_CODE): cv.string,
+            }
+        )
+        if user_input is None:
+            return self.async_show_form(step_id="country", data_schema=data_schema)
+
+        assert self._data is not None
+
+        return await self._validate_and_create(
+            "country", data_schema, {**self._data, **user_input}
+        )
+
+    async def _validate_and_create(
+        self, step_id: str, data_schema: vol.Schema, data: dict
+    ) -> FlowResult:
+        """Validate data and show form if it is invalid."""
+        errors: dict[str, str] = {}
+
+        try:
+            await self.hass.async_add_executor_job(_validate_info, self.hass, data)
+        except InvalidAuth:
+            errors["base"] = "invalid_auth"
+        except APIRatelimitExceeded:
+            errors["base"] = "api_ratelimit"
+        except UnknownError:
+            errors["base"] = "unknown"
+        else:
+            return self.async_create_entry(
+                title=get_extra_name(self.hass, data) or "CO2 Signal",
+                data=data,
+            )
+
+        return self.async_show_form(
+            step_id=step_id,
+            data_schema=data_schema,
+            errors=errors,
+        )
diff --git a/homeassistant/components/co2signal/const.py b/homeassistant/components/co2signal/const.py
new file mode 100644
index 00000000000..1db0ccc20fd
--- /dev/null
+++ b/homeassistant/components/co2signal/const.py
@@ -0,0 +1,11 @@
+"""Constants for the Co2signal integration."""
+
+
+DOMAIN = "co2signal"
+CONF_COUNTRY_CODE = "country_code"
+ATTRIBUTION = "Data provided by CO2signal"
+MSG_LOCATION = (
+    "Please use either coordinates or the country code. "
+    "For the coordinates, "
+    "you need to use both latitude and longitude."
+)
diff --git a/homeassistant/components/co2signal/manifest.json b/homeassistant/components/co2signal/manifest.json
index 50ed7f62038..1921ae4f575 100644
--- a/homeassistant/components/co2signal/manifest.json
+++ b/homeassistant/components/co2signal/manifest.json
@@ -2,7 +2,10 @@
   "domain": "co2signal",
   "name": "CO2 Signal",
   "documentation": "https://www.home-assistant.io/integrations/co2signal",
-  "requirements": ["co2signal==0.4.2"],
+  "requirements": [
+    "co2signal==0.4.2"
+  ],
   "codeowners": [],
-  "iot_class": "cloud_polling"
-}
+  "iot_class": "cloud_polling",
+  "config_flow": true
+}
\ No newline at end of file
diff --git a/homeassistant/components/co2signal/sensor.py b/homeassistant/components/co2signal/sensor.py
index cb2ff40c062..88a80df0b54 100644
--- a/homeassistant/components/co2signal/sensor.py
+++ b/homeassistant/components/co2signal/sensor.py
@@ -5,9 +5,14 @@ import logging
 import CO2Signal
 import voluptuous as vol
 
+from homeassistant import config_entries
 from homeassistant.components.sensor import PLATFORM_SCHEMA, SensorEntity
 from homeassistant.const import (
     ATTR_ATTRIBUTION,
+    ATTR_IDENTIFIERS,
+    ATTR_MANUFACTURER,
+    ATTR_NAME,
+    CONF_API_KEY,
     CONF_LATITUDE,
     CONF_LONGITUDE,
     CONF_TOKEN,
@@ -15,18 +20,12 @@ from homeassistant.const import (
 )
 import homeassistant.helpers.config_validation as cv
 
-CONF_COUNTRY_CODE = "country_code"
+from .const import ATTRIBUTION, CONF_COUNTRY_CODE, DOMAIN, MSG_LOCATION
+from .util import get_extra_name
 
 _LOGGER = logging.getLogger(__name__)
 SCAN_INTERVAL = timedelta(minutes=3)
 
-ATTRIBUTION = "Data provided by CO2signal"
-
-MSG_LOCATION = (
-    "Please use either coordinates or the country code. "
-    "For the coordinates, "
-    "you need to use both latitude and longitude."
-)
 CO2_INTENSITY_UNIT = f"CO2eq/{ENERGY_KILO_WATT_HOUR}"
 PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
     {
@@ -38,16 +37,31 @@ PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
 )
 
 
-def setup_platform(hass, config, add_entities, discovery_info=None):
+async def async_setup_platform(hass, config, add_entities, discovery_info=None):
     """Set up the CO2signal sensor."""
-    token = config[CONF_TOKEN]
-    lat = config.get(CONF_LATITUDE, hass.config.latitude)
-    lon = config.get(CONF_LONGITUDE, hass.config.longitude)
-    country_code = config.get(CONF_COUNTRY_CODE)
+    await hass.config_entries.flow.async_init(
+        DOMAIN,
+        context={"source": config_entries.SOURCE_IMPORT},
+        data=config,
+    )
 
-    _LOGGER.debug("Setting up the sensor using the %s", country_code)
 
-    add_entities([CO2Sensor(token, country_code, lat, lon)], True)
+async def async_setup_entry(hass, entry, async_add_entities):
+    """Set up the CO2signal sensor."""
+    name = "CO2 intensity"
+    if extra_name := get_extra_name(hass, entry.data):
+        name += f" - {extra_name}"
+
+    async_add_entities(
+        [
+            CO2Sensor(
+                name,
+                entry.data,
+                entry_id=entry.entry_id,
+            )
+        ],
+        True,
+    )
 
 
 class CO2Sensor(SensorEntity):
@@ -56,33 +70,37 @@ class CO2Sensor(SensorEntity):
     _attr_icon = "mdi:molecule-co2"
     _attr_unit_of_measurement = CO2_INTENSITY_UNIT
 
-    def __init__(self, token, country_code, lat, lon):
+    def __init__(self, name, config, entry_id):
         """Initialize the sensor."""
-        self._token = token
-        self._country_code = country_code
-        self._latitude = lat
-        self._longitude = lon
-
-        if country_code is not None:
-            device_name = country_code
-        else:
-            device_name = f"{round(self._latitude, 2)}/{round(self._longitude, 2)}"
-
-        self._attr_name = f"CO2 intensity - {device_name}"
+        self._config = config
+        self._attr_name = name
         self._attr_extra_state_attributes = {ATTR_ATTRIBUTION: ATTRIBUTION}
+        self._attr_device_info = {
+            ATTR_IDENTIFIERS: {(DOMAIN, entry_id)},
+            ATTR_NAME: "CO2 signal",
+            ATTR_MANUFACTURER: "Tmrow.com",
+            "entry_type": "service",
+        }
+        self._attr_unique_id = f"{entry_id}_co2intensity"
 
     def update(self):
         """Get the latest data and updates the states."""
-
         _LOGGER.debug("Update data for %s", self.name)
 
-        if self._country_code is not None:
-            data = CO2Signal.get_latest_carbon_intensity(
-                self._token, country_code=self._country_code
-            )
+        if CONF_COUNTRY_CODE in self._config:
+            kwargs = {"country_code": self._config[CONF_COUNTRY_CODE]}
+        elif CONF_LATITUDE in self._config:
+            kwargs = {
+                "latitude": self._config[CONF_LATITUDE],
+                "longitude": self._config[CONF_LONGITUDE],
+            }
         else:
-            data = CO2Signal.get_latest_carbon_intensity(
-                self._token, latitude=self._latitude, longitude=self._longitude
-            )
+            kwargs = {
+                "latitude": self.hass.config.latitude,
+                "longitude": self.hass.config.longitude,
+            }
 
-        self._attr_state = round(data, 2)
+        self._attr_state = round(
+            CO2Signal.get_latest_carbon_intensity(self._config[CONF_API_KEY], **kwargs),
+            2,
+        )
diff --git a/homeassistant/components/co2signal/strings.json b/homeassistant/components/co2signal/strings.json
new file mode 100644
index 00000000000..2fe5b79c907
--- /dev/null
+++ b/homeassistant/components/co2signal/strings.json
@@ -0,0 +1,34 @@
+{
+  "config": {
+    "step": {
+      "user": {
+        "data": {
+          "location": "Get data for",
+          "api_key": "[%key:common::config_flow::data::access_token%]"
+        },
+        "description": "Visit https://co2signal.com/ to request a token."
+      },
+      "coordinates": {
+        "data": {
+          "latitude": "[%key:common::config_flow::data::latitude%]",
+          "longitude": "[%key:common::config_flow::data::longitude%]"
+        }
+      },
+      "country": {
+        "data": {
+          "country_code": "Country code"
+        }
+      }
+    },
+    "error": {
+      "invalid_auth": "[%key:common::config_flow::error::invalid_auth%]",
+      "unknown": "[%key:common::config_flow::error::unknown%]",
+      "api_ratelimit": "API Ratelimit exceeded"
+    },
+    "abort": {
+      "already_configured": "[%key:common::config_flow::abort::already_configured_device%]",
+      "unknown": "[%key:common::config_flow::error::unknown%]",
+      "api_ratelimit": "API Ratelimit exceeded"
+    }
+  }
+}
diff --git a/homeassistant/components/co2signal/translations/en.json b/homeassistant/components/co2signal/translations/en.json
new file mode 100644
index 00000000000..3d8cc7c9d9f
--- /dev/null
+++ b/homeassistant/components/co2signal/translations/en.json
@@ -0,0 +1,34 @@
+{
+    "config": {
+        "abort": {
+            "already_configured": "Device is already configured",
+            "api_ratelimit": "API Ratelimit exceeded",
+            "unknown": "Unexpected error"
+        },
+        "error": {
+            "api_ratelimit": "API Ratelimit exceeded",
+            "invalid_auth": "Invalid authentication",
+            "unknown": "Unexpected error"
+        },
+        "step": {
+            "coordinates": {
+                "data": {
+                    "latitude": "Latitude",
+                    "longitude": "Longitude"
+                }
+            },
+            "country": {
+                "data": {
+                    "country_code": "Country code"
+                }
+            },
+            "user": {
+                "data": {
+                    "api_key": "Access Token",
+                    "location": "Get data for"
+                },
+                "description": "Visit https://co2signal.com/ to request a token."
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/homeassistant/components/co2signal/util.py b/homeassistant/components/co2signal/util.py
new file mode 100644
index 00000000000..9cda6f558bf
--- /dev/null
+++ b/homeassistant/components/co2signal/util.py
@@ -0,0 +1,18 @@
+"""Utils for CO2 signal."""
+from __future__ import annotations
+
+from homeassistant.const import CONF_LATITUDE, CONF_LONGITUDE
+from homeassistant.core import HomeAssistant
+
+from .const import CONF_COUNTRY_CODE
+
+
+def get_extra_name(hass: HomeAssistant, config: dict) -> str | None:
+    """Return the extra name describing the location if not home."""
+    if CONF_COUNTRY_CODE in config:
+        return config[CONF_COUNTRY_CODE]
+
+    if CONF_LATITUDE in config:
+        return f"{round(config[CONF_LATITUDE], 2)}, {round(config[CONF_LONGITUDE], 2)}"
+
+    return None
diff --git a/homeassistant/generated/config_flows.py b/homeassistant/generated/config_flows.py
index 40b5f1360ed..45a339ebed1 100644
--- a/homeassistant/generated/config_flows.py
+++ b/homeassistant/generated/config_flows.py
@@ -45,6 +45,7 @@ FLOWS = [
     "cert_expiry",
     "climacell",
     "cloudflare",
+    "co2signal",
     "coinbase",
     "control4",
     "coolmaster",
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 7674a78ce9e..f02e611debf 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -249,6 +249,9 @@ buienradar==1.0.4
 # homeassistant.components.caldav
 caldav==0.7.1
 
+# homeassistant.components.co2signal
+co2signal==0.4.2
+
 # homeassistant.components.coinbase
 coinbase==2.1.0
 
diff --git a/tests/components/co2signal/__init__.py b/tests/components/co2signal/__init__.py
new file mode 100644
index 00000000000..1f3d6a83c05
--- /dev/null
+++ b/tests/components/co2signal/__init__.py
@@ -0,0 +1,11 @@
+"""Tests for the CO2 Signal integration."""
+
+VALID_PAYLOAD = {
+    "status": "ok",
+    "countryCode": "FR",
+    "data": {
+        "carbonIntensity": 45.98623190095805,
+        "fossilFuelPercentage": 5.461182741937103,
+    },
+    "units": {"carbonIntensity": "gCO2eq/kWh"},
+}
diff --git a/tests/components/co2signal/test_config_flow.py b/tests/components/co2signal/test_config_flow.py
new file mode 100644
index 00000000000..25d38526133
--- /dev/null
+++ b/tests/components/co2signal/test_config_flow.py
@@ -0,0 +1,299 @@
+"""Test the CO2 Signal config flow."""
+from unittest.mock import patch
+
+import pytest
+
+from homeassistant import config_entries, setup
+from homeassistant.components.co2signal import DOMAIN, config_flow
+from homeassistant.core import HomeAssistant
+from homeassistant.data_entry_flow import RESULT_TYPE_CREATE_ENTRY, RESULT_TYPE_FORM
+from homeassistant.setup import async_setup_component
+
+from . import VALID_PAYLOAD
+
+from tests.common import MockConfigEntry
+
+
+async def test_form_home(hass: HomeAssistant) -> None:
+    """Test we get the form."""
+    await setup.async_setup_component(hass, "persistent_notification", {})
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+    assert result["type"] == RESULT_TYPE_FORM
+    assert result["errors"] is None
+
+    with patch(
+        "homeassistant.components.co2signal.config_flow.CO2Signal.get_latest",
+        return_value=VALID_PAYLOAD,
+    ), patch(
+        "homeassistant.components.co2signal.async_setup_entry",
+        return_value=True,
+    ) as mock_setup_entry:
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {
+                "location": config_flow.TYPE_USE_HOME,
+                "api_key": "api_key",
+            },
+        )
+        await hass.async_block_till_done()
+
+    assert result2["type"] == RESULT_TYPE_CREATE_ENTRY
+    assert result2["title"] == "CO2 Signal"
+    assert result2["data"] == {
+        "api_key": "api_key",
+    }
+    assert len(mock_setup_entry.mock_calls) == 1
+
+
+async def test_form_coordinates(hass: HomeAssistant) -> None:
+    """Test we get the form."""
+    await setup.async_setup_component(hass, "persistent_notification", {})
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+    assert result["type"] == RESULT_TYPE_FORM
+    assert result["errors"] is None
+
+    result2 = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        {
+            "location": config_flow.TYPE_SPECIFY_COORDINATES,
+            "api_key": "api_key",
+        },
+    )
+    assert result2["type"] == RESULT_TYPE_FORM
+
+    with patch(
+        "homeassistant.components.co2signal.config_flow.CO2Signal.get_latest",
+        return_value=VALID_PAYLOAD,
+    ), patch(
+        "homeassistant.components.co2signal.async_setup_entry",
+        return_value=True,
+    ) as mock_setup_entry:
+        result3 = await hass.config_entries.flow.async_configure(
+            result2["flow_id"],
+            {
+                "latitude": 12.3,
+                "longitude": 45.6,
+            },
+        )
+        await hass.async_block_till_done()
+
+    assert result3["type"] == RESULT_TYPE_CREATE_ENTRY
+    assert result3["title"] == "12.3, 45.6"
+    assert result3["data"] == {
+        "latitude": 12.3,
+        "longitude": 45.6,
+        "api_key": "api_key",
+    }
+    assert len(mock_setup_entry.mock_calls) == 1
+
+
+async def test_form_country(hass: HomeAssistant) -> None:
+    """Test we get the form."""
+    await setup.async_setup_component(hass, "persistent_notification", {})
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+    assert result["type"] == RESULT_TYPE_FORM
+    assert result["errors"] is None
+
+    result2 = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        {
+            "location": config_flow.TYPE_SPECIFY_COUNTRY,
+            "api_key": "api_key",
+        },
+    )
+    assert result2["type"] == RESULT_TYPE_FORM
+
+    with patch(
+        "homeassistant.components.co2signal.config_flow.CO2Signal.get_latest",
+        return_value=VALID_PAYLOAD,
+    ), patch(
+        "homeassistant.components.co2signal.async_setup_entry",
+        return_value=True,
+    ) as mock_setup_entry:
+        result3 = await hass.config_entries.flow.async_configure(
+            result2["flow_id"],
+            {
+                "country_code": "fr",
+            },
+        )
+        await hass.async_block_till_done()
+
+    assert result3["type"] == RESULT_TYPE_CREATE_ENTRY
+    assert result3["title"] == "fr"
+    assert result3["data"] == {
+        "country_code": "fr",
+        "api_key": "api_key",
+    }
+    assert len(mock_setup_entry.mock_calls) == 1
+
+
+@pytest.mark.parametrize(
+    "err_str,err_code",
+    [
+        ("Invalid authentication credentials", "invalid_auth"),
+        ("API rate limit exceeded.", "api_ratelimit"),
+        ("Something else", "unknown"),
+    ],
+)
+async def test_form_error_handling(hass: HomeAssistant, err_str, err_code) -> None:
+    """Test we handle expected errors."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+
+    with patch(
+        "homeassistant.components.co2signal.config_flow.CO2Signal.get_latest",
+        side_effect=ValueError(err_str),
+    ):
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {
+                "location": config_flow.TYPE_USE_HOME,
+                "api_key": "api_key",
+            },
+        )
+
+    assert result2["type"] == RESULT_TYPE_FORM
+    assert result2["errors"] == {"base": err_code}
+
+
+async def test_form_error_unexpected_error(hass: HomeAssistant) -> None:
+    """Test we handle unexpected error."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+
+    with patch(
+        "homeassistant.components.co2signal.config_flow.CO2Signal.get_latest",
+        side_effect=Exception("Boom"),
+    ):
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {
+                "location": config_flow.TYPE_USE_HOME,
+                "api_key": "api_key",
+            },
+        )
+
+    assert result2["type"] == RESULT_TYPE_FORM
+    assert result2["errors"] == {"base": "unknown"}
+
+
+async def test_form_error_unexpected_data(hass: HomeAssistant) -> None:
+    """Test we handle unexpected data."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+
+    with patch(
+        "homeassistant.components.co2signal.config_flow.CO2Signal.get_latest",
+        return_value={"status": "error"},
+    ):
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {
+                "location": config_flow.TYPE_USE_HOME,
+                "api_key": "api_key",
+            },
+        )
+
+    assert result2["type"] == RESULT_TYPE_FORM
+    assert result2["errors"] == {"base": "unknown"}
+
+
+async def test_import(hass: HomeAssistant) -> None:
+    """Test we import correctly."""
+    await setup.async_setup_component(hass, "persistent_notification", {})
+
+    with patch(
+        "homeassistant.components.co2signal.config_flow.CO2Signal.get_latest",
+        return_value=VALID_PAYLOAD,
+    ):
+        assert await async_setup_component(
+            hass, "sensor", {"sensor": {"platform": "co2signal", "token": "1234"}}
+        )
+        await hass.async_block_till_done()
+
+    assert len(hass.config_entries.async_entries("co2signal")) == 1
+    state = hass.states.get("sensor.co2_intensity")
+    assert state is not None
+    assert state.state == "45.99"
+    assert state.name == "CO2 intensity"
+
+
+async def test_import_abort_existing_home(hass: HomeAssistant) -> None:
+    """Test we abort if home entry found."""
+    await setup.async_setup_component(hass, "persistent_notification", {})
+    MockConfigEntry(domain="co2signal", data={"api_key": "abcd"}).add_to_hass(hass)
+
+    with patch(
+        "homeassistant.components.co2signal.config_flow.CO2Signal.get_latest",
+        return_value=VALID_PAYLOAD,
+    ):
+        assert await async_setup_component(
+            hass, "sensor", {"sensor": {"platform": "co2signal", "token": "1234"}}
+        )
+        await hass.async_block_till_done()
+
+    assert len(hass.config_entries.async_entries("co2signal")) == 1
+
+
+async def test_import_abort_existing_country(hass: HomeAssistant) -> None:
+    """Test we abort if existing country found."""
+    await setup.async_setup_component(hass, "persistent_notification", {})
+    MockConfigEntry(
+        domain="co2signal", data={"api_key": "abcd", "country_code": "nl"}
+    ).add_to_hass(hass)
+
+    with patch(
+        "homeassistant.components.co2signal.config_flow.CO2Signal.get_latest",
+        return_value=VALID_PAYLOAD,
+    ):
+        assert await async_setup_component(
+            hass,
+            "sensor",
+            {
+                "sensor": {
+                    "platform": "co2signal",
+                    "token": "1234",
+                    "country_code": "nl",
+                }
+            },
+        )
+        await hass.async_block_till_done()
+
+    assert len(hass.config_entries.async_entries("co2signal")) == 1
+
+
+async def test_import_abort_existing_coordinates(hass: HomeAssistant) -> None:
+    """Test we abort if existing coordinates found."""
+    await setup.async_setup_component(hass, "persistent_notification", {})
+    MockConfigEntry(
+        domain="co2signal", data={"api_key": "abcd", "latitude": 1, "longitude": 2}
+    ).add_to_hass(hass)
+
+    with patch(
+        "homeassistant.components.co2signal.config_flow.CO2Signal.get_latest",
+        return_value=VALID_PAYLOAD,
+    ):
+        assert await async_setup_component(
+            hass,
+            "sensor",
+            {
+                "sensor": {
+                    "platform": "co2signal",
+                    "token": "1234",
+                    "latitude": 1,
+                    "longitude": 2,
+                }
+            },
+        )
+        await hass.async_block_till_done()
+
+    assert len(hass.config_entries.async_entries("co2signal")) == 1