diff --git a/.gitignore b/.gitignore
index 44bff78..5f2bf0a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -135,6 +135,7 @@ celerybeat.pid
 
 # Environments
 .env
+!deployment/.env
 .venv
 env/
 venv/
diff --git a/deployment/.env b/deployment/.env
new file mode 100644
index 0000000..9c741ea
--- /dev/null
+++ b/deployment/.env
@@ -0,0 +1,3 @@
+DOPT_STOP_FOLDER_NAME=python
+DOPT_INTERNAL_DB=data/wattana.db
+DOPT_PATH_LOGGING=data/logs
\ No newline at end of file
diff --git a/pdm.lock b/pdm.lock
index f15bd02..efcf931 100644
--- a/pdm.lock
+++ b/pdm.lock
@@ -5,7 +5,7 @@
 groups = ["default", "dev", "lint", "nb", "tests"]
 strategy = ["inherit_metadata"]
 lock_version = "4.5.0"
-content_hash = "sha256:33241b6273d0130d424b01e4bde45eba106100f2a47b12e3c053ba1ecd1557ae"
+content_hash = "sha256:19e06fc0367f0208bc7ff972401f8297331c48c0a153b393b4d92e595eabc852"
 
 [[metadata.targets]]
 requires_python = ">=3.11"
@@ -762,6 +762,20 @@ files = [
     {file = "distlib-0.4.1.tar.gz", hash = "sha256:c3804d0d2d4b5fcd44036eb860cb6660485fcdf5c2aba53dc324d805837ea65b"},
 ]
 
+[[package]]
+name = "dopt-basics"
+version = "0.2.6"
+requires_python = ">=3.11"
+summary = "basic cross-project tools for Python-based d-opt projects"
+groups = ["default"]
+dependencies = [
+    "tzdata>=2025.1",
+]
+files = [
+    {file = "dopt_basics-0.2.6-py3-none-any.whl", hash = "sha256:f0818e2f83e91fb7d398bcabfc6c420159757d7d093b20574b88a3abc24e3eab"},
+    {file = "dopt_basics-0.2.6.tar.gz", hash = "sha256:0e90d0d7a711e0dee9f898574683442644d3145ac8905d38ea23775f62aa5d2b"},
+]
+
 [[package]]
 name = "execnet"
 version = "2.1.2"
@@ -2083,7 +2097,7 @@ name = "python-dotenv"
 version = "1.2.2"
 requires_python = ">=3.10"
 summary = "Read key-value pairs from a .env file and set them as environment variables"
-groups = ["dev"]
+groups = ["default", "dev"]
 files = [
     {file = "python_dotenv-1.2.2-py3-none-any.whl", hash = "sha256:1d8214789a24de455a8b8bd8ae6fe3c6b69a5e3d64aa8a8e5d68e694bbcb285a"},
     {file = "python_dotenv-1.2.2.tar.gz", hash = "sha256:2c371a91fbd7ba082c2c1dc1f8bf89ca22564a087c2c287cd9b662adde799cf3"},
@@ -2786,8 +2800,7 @@ name = "tzdata"
 version = "2026.2"
 requires_python = ">=2"
 summary = "Provider of IANA time zone data"
-groups = ["nb"]
-marker = "python_version >= \"3.9\""
+groups = ["default", "nb"]
 files = [
     {file = "tzdata-2026.2-py2.py3-none-any.whl", hash = "sha256:bbe9af844f658da81a5f95019480da3a89415801f6cc966806612cc7169bffe7"},
     {file = "tzdata-2026.2.tar.gz", hash = "sha256:9173fde7d80d9018e02a662e168e5a2d04f87c41ea174b139fbef642eda62d10"},
diff --git a/pyproject.toml b/pyproject.toml
index e9a9d6f..4927bdf 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@ description = "analysis of production state messages obtained from customers"
 authors = [
     {name = "d-opt GmbH, resp. Florian Förster", email = "f.foerster@d-opt.com"},
 ]
-dependencies = ["polars>=1.41.2", "sqlalchemy[asyncio]>=2.0.50"]
+dependencies = ["polars>=1.41.2", "sqlalchemy[asyncio]>=2.0.50", "python-dotenv>=1.2.2", "dopt-basics>=0.2.6"]
 requires-python = ">=3.11"
 readme = "README.md"
 license = {text = "LicenseRef-Proprietary"}
diff --git a/src/wattanalyse/README.md b/src/wattanalyse/README.md
new file mode 100644
index 0000000..6b70cdb
--- /dev/null
+++ b/src/wattanalyse/README.md
@@ -0,0 +1,6 @@
+# List of environment variables
+
+- DOPT_DEVELOPMENT: flag which signals that the current environment is in development mode
+- DOPT_STOP_FOLDER_NAME: stop folder to find base path
+- DOPT_INTERNAL_DB: path to CRM database, relative to base path
+- DOPT_PATH_LOGGING: path to logging folder, relative to base path
diff --git a/src/wattanalyse/constants.py b/src/wattanalyse/constants.py
new file mode 100644
index 0000000..661c9a0
--- /dev/null
+++ b/src/wattanalyse/constants.py
@@ -0,0 +1,23 @@
+from __future__ import annotations
+
+import os
+from pathlib import Path
+from typing import Final
+
+from dopt_basics import io as io_
+
+# PROJECT_ROOT = Path(__file__).resolve().parents[2]
+LIB_PATH: Final[Path] = Path(__file__).resolve().parent
+
+
+BASE_PATH = io_.search_folder_path(
+    LIB_PATH, stop_folder_name=os.getenv("DOPT_STOP_FOLDER_NAME", "python")
+)
+assert BASE_PATH
+
+
+class Config:
+    DEVELOPMENT_STATE: bool = bool(os.getenv("DOPT_DEVELOPMENT", None))
+    DB_PATH_INTERNAL: Path = BASE_PATH / os.getenv("DOPT_INTERNAL_DB", "not_existing")
+    PATH_LOGGING: Path = BASE_PATH / os.getenv("DOPT_PATH_LOGGING", "data/d-opt.log")
+    LOG_FILENAME: str = "dopt.log"
diff --git a/src/wattanalyse/logging.py b/src/wattanalyse/logging.py
new file mode 100644
index 0000000..befd4d5
--- /dev/null
+++ b/src/wattanalyse/logging.py
@@ -0,0 +1,30 @@
+import logging
+
+from dopt_basics.logging import BASE_LOGGER, LoggingConfig, setup_logging
+
+from wattanalyse.constants import Config
+
+enable_stderr: bool = False
+enable_file: bool = True
+
+if Config.DEVELOPMENT_STATE:
+    enable_stderr = True
+    enable_file = False
+
+if not Config.PATH_LOGGING.exists():
+    Config.PATH_LOGGING.mkdir()
+
+LOGGING_CFG: LoggingConfig = LoggingConfig(
+    enable_stderr=enable_stderr,
+    enable_file=enable_file,
+    logging_dir=Config.PATH_LOGGING,
+    log_filename=Config.LOG_FILENAME,
+    file_max_bytes=10_485_760,
+    file_backup_count=2,
+)
+
+setup_logging(LOGGING_CFG)
+logger_base = BASE_LOGGER.getChild("wattana")
+
+logger_database = logger_base.getChild("database")
+logger_database.setLevel(logging.DEBUG)