diff --git a/monitoring/db/scripts/get_detailed_power.py b/monitoring/db/scripts/get_detailed_power.py
index 898f60f..54f44b5 100755
--- a/monitoring/db/scripts/get_detailed_power.py
+++ b/monitoring/db/scripts/get_detailed_power.py
@@ -74,7 +74,7 @@ class Power:
 		self.by_node = by_node
 		self.first_ts, self.last_ts = times[0], times[-1]
 		self.warnings = ""    # add check for warning, i.e. data gaps due to missing nodes
-		self.energy = self.summarize_energy()
+		self.energy = self._summarize_energy()
 
 	def to_file(self, jobid, header=""):
 		"""Dumps power data to file. Returns filename is succesfull and None if unsucessfull."""
@@ -110,11 +110,11 @@ class Power:
 			_body += self.pretty_print(*self.summarize_epoch(epoch))
 		return _body
 	
-	def summarize_time(self, ts):
+	def _summarize_time(self, ts):
 		return Power.to_csv(ts, "")
 
 	@staticmethod
-	def summarize_values(df):
+	def _summarize_values(df):
 		values = df['power'].values
 		head = values[0]
 		min, max = values.min(), values.max()
@@ -124,11 +124,11 @@ class Power:
 
 	def summarize_epoch(self, epoch):
 		ts, values = epoch
-		return self.summarize_time(ts), \
-				self.summarize_values(values), \
-				self.all_values(values)
+		return self._summarize_time(ts), \
+				self._summarize_values(values), \
+				self._all_values(values)
 
-	def all_values(self, values):
+	def _all_values(self, values):
 		# reindex frame to get all nodes; introduces gaps
 		values = values[['node', 'power']].set_index('node').reindex(self.nodes)
 		# hack to_csv() to transpose array
@@ -139,17 +139,17 @@ class Power:
 	def energy_total(self):
 		energy = None
 		if hasattr(self, "by_node"):
-			energy = self.by_node.apply(self.energy_node).sum()
+			energy = self.by_node.apply(self._energy_node).sum()
 		return energy
 	
 	@staticmethod
-	def energy_node(group):
+	def _energy_node(group):
 		"""Left-sided Riemann sum is enough, as time is lower bound of bucket"""
 		delta_t = group["time"].diff().shift(-1)/1000.  # in seconds
 		pow =  group['power']
 		return (delta_t * pow).iloc[:-1].sum()	
 
-	def summarize_energy(self):
+	def _summarize_energy(self):
 		return "# Total energy consumed by job: {energy:.0f} J\n".format(energy=self.energy_total())
 
 	@staticmethod