diff --git a/CHANGELOG.md b/CHANGELOG.md
index cb8d288..8483d79 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 - Use `.expand_dims` instead of `.assign_coords` to make sure we have both time dimension and time coordinates when loading from files [!15](https://github.com/dmidk/sunflow/pull/15), @JoachimKoenigslieb
 - `check_solar_elevation` now does not assume location is in Copenhagen by default [!15](https://github.com/dmidk/sunflow/pull/15), @JoachimKoenigslieb
+- Renamed MTG and MTG_pvlib to specMAGIC_MTG and specMAGIC_MTG_pvlib, respectively [!24](https://github.com/dmidk/sunflow/pull/24), @KristianHMoller
 
 ## [v1.2.0]
 
diff --git a/config.yaml b/config.yaml
index 192efd4..70fa4c6 100644
--- a/config.yaml
+++ b/config.yaml
@@ -37,7 +37,7 @@ DWD:
   # Supports subdirectories via path separators, e.g.: "{year}/{month}/{day}/{dataset_name}_{timestamp}_{domain_satellite_name}.nc"
   filename_format: "{dataset_name}_{timestamp}_{domain_satellite_name}.nc"
 
-MTG:
+specMAGIC_MTG:
   nc_variable_names:
     sds: GHI
     sds_cs: CSR
@@ -47,7 +47,7 @@ MTG:
     method: file
     path: "CSR/CSR{year}{month}{day}{hour}{minute}.nc"
 
-MTG_pvlib:
+specMAGIC_MTG_pvlib:
   nc_variable_names:
     sds: GHI
     sds_cs: GHI_clearsky
diff --git a/sunflow/main.py b/sunflow/main.py
index bfd57ac..1be43f0 100644
--- a/sunflow/main.py
+++ b/sunflow/main.py
@@ -114,10 +114,13 @@ def parse_datetime_with_timezone(datetime_str: str) -> datetime:
     )
     parser.add_argument(
         "--dataset",
-        choices=["KNMI", "DWD", "MTG", "MTG_pvlib"],
+        choices=["KNMI", "DWD", "specMAGIC_MTG", "specMAGIC_MTG_pvlib"],
         default="KNMI",
-        help="Choose dataset: Currently, only KNMI and DWD data are supported "
-        "(default: KNMI)",
+        help="Dataset (default: KNMI): \n"
+        "KNMI: MSG-CPP data from KNMI\n"
+        "DWD: MSG-based data from DWD\n"
+        "specMAGIC_MTG: MTG-based GHI data from specMAGIC\n"
+        "specMAGIC_MTG_pvlib: MTG-based GHI data from specMAGIC with pvlib clearsky",
     )
     parser.add_argument(
         "--domain_satellite",