diff --git a/README.md b/README.md
index ab4d63b3..a603badd 100644
--- a/README.md
+++ b/README.md
@@ -50,9 +50,9 @@ The dataset consists of:
 
 - A grid model based on a modified [GridKit](https://github.com/bdw/GridKit)
   extraction of the [ENTSO-E Transmission System
-  Map](https://www.entsoe.eu/data/map/). The grid model contains 6763 lines
+  Map](https://www.entsoe.eu/data/map/). The grid model contains 7072 lines
   (alternating current lines at and above 220kV voltage level and all high
-  voltage direct current lines) and 3642 substations.
+  voltage direct current lines) and 3803 substations.
 - The open power plant database
   [powerplantmatching](https://github.com/FRESNA/powerplantmatching).
 - Electrical demand time series from the
diff --git a/config.default.yaml b/config.default.yaml
index 258241bc..a354861a 100755
--- a/config.default.yaml
+++ b/config.default.yaml
@@ -39,8 +39,8 @@ enable:
 
 electricity:
   voltages: [220., 300., 380., 750.]
-  co2limit: 7.75e+7 # 0.05 * 3.1e9*0.5
-  co2base: 1.487e+9
+  co2limit: 9.59e+7 # 0.05 * co2base
+  co2base: 1.918e+9
   agg_p_nom_limits: data/agg_p_nom_minmax.csv
 
   extendable_carriers: