diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ddd2ff4
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+node_modules/
+.angular/
\ No newline at end of file
diff --git a/src/app/statistics.ts b/src/app/statistics.ts
index de6082b..91ed267 100644
--- a/src/app/statistics.ts
+++ b/src/app/statistics.ts
@@ -5,4 +5,5 @@ export interface Statistics {
     injectedEnergy: number,
     obtainedEnergy: number,
     savedMoney: number,
+    payedMoney: number,
 }