diff --git a/data/hydrogen_salt_cavern_potentials.csv b/data/hydrogen_salt_cavern_potentials.csv
index e9d269af..c1168266 100644
--- a/data/hydrogen_salt_cavern_potentials.csv
+++ b/data/hydrogen_salt_cavern_potentials.csv
@@ -1,31 +1,31 @@
-,,TWh
-AT,False,
-BA,False,
-BE,False,
-BG,False,
-CH,False,
-CZ,False,
-DE,True,4500
-DK,True,700
-EE,False,
-ES,True,350
-FI,False,
-FR,False,
-GB,True,1050
-GR,True,120
-HR,False,
-HU,False,
-IE,False,
-IT,False,
-LT,False,
-LU,False,
-LV,False,
-NL,True,150
-NO,False,
-PL,True,120
-PT,True,400
-RO,False,
-RS,False,
-SE,False,
-SI,False,
-SK,False,
+ct,TWh
+AT,
+BA,
+BE,
+BG,
+CH,
+CZ,
+DE,4500
+DK,700
+EE,
+ES,350
+FI,
+FR,
+GB,1050
+GR,120
+HR,
+HU,
+IE,
+IT,
+LT,
+LU,
+LV,
+NL,150
+NO,
+PL,120
+PT,400
+RO,
+RS,
+SE,
+SI,
+SK,
diff --git a/scripts/prepare_sector_network.py b/scripts/prepare_sector_network.py
index b596b50c..0bab8487 100644
--- a/scripts/prepare_sector_network.py
+++ b/scripts/prepare_sector_network.py
@@ -805,17 +805,18 @@ def add_storage(network):
 
     if options['hydrogen_underground_storage']:
          h2_salt_cavern_potential = pd.read_csv(snakemake.input.h2_cavern,
-                                               index_col=0, skiprows=[0],
-                                               names=["potential", "TWh"])
-         h2_cavern_ct = h2_salt_cavern_potential[h2_salt_cavern_potential.potential]
+                                                index_col=0,squeeze=True)
+         h2_cavern_ct = h2_salt_cavern_potential[~h2_salt_cavern_potential.isna()]
          cavern_nodes = pop_layout[pop_layout.ct.isin(h2_cavern_ct.index)]
 
          h2_capital_cost = costs.at["hydrogen storage underground", "fixed"]
 
          # assumptions: weight storage potential in a country by population
-         h2_pot = (h2_cavern_ct.loc[cavern_nodes.ct, "TWh"].astype(float)
-                   .reset_index().set_index(cavern_nodes.index))
-         h2_pot = h2_pot.TWh * cavern_nodes.fraction
+         # TODO: fix with real geographic potentials
+         #convert TWh to MWh with 1e6
+         h2_pot = h2_cavern_ct.loc[cavern_nodes.ct]
+         h2_pot.index = cavern_nodes.index
+         h2_pot = h2_pot * cavern_nodes.fraction * 1e6
 
          network.madd("Store",
                       cavern_nodes.index + " H2 Store",