diff --git a/.idea/codeStyles/Project.xml b/.idea/codeStyles/Project.xml
new file mode 100644
index 0000000..3cdc6ae
--- /dev/null
+++ b/.idea/codeStyles/Project.xml
@@ -0,0 +1,28 @@
+<component name="ProjectCodeStyleConfiguration">
+  <code_scheme name="Project" version="173">
+    <DBN-PSQL>
+      <case-options enabled="true">
+        <option name="KEYWORD_CASE" value="lower" />
+        <option name="FUNCTION_CASE" value="lower" />
+        <option name="PARAMETER_CASE" value="lower" />
+        <option name="DATATYPE_CASE" value="lower" />
+        <option name="OBJECT_CASE" value="preserve" />
+      </case-options>
+      <formatting-settings enabled="false" />
+    </DBN-PSQL>
+    <DBN-SQL>
+      <case-options enabled="true">
+        <option name="KEYWORD_CASE" value="lower" />
+        <option name="FUNCTION_CASE" value="lower" />
+        <option name="PARAMETER_CASE" value="lower" />
+        <option name="DATATYPE_CASE" value="lower" />
+        <option name="OBJECT_CASE" value="preserve" />
+      </case-options>
+      <formatting-settings enabled="false">
+        <option name="STATEMENT_SPACING" value="one_line" />
+        <option name="CLAUSE_CHOP_DOWN" value="chop_down_if_statement_long" />
+        <option name="ITERATION_ELEMENTS_WRAPPING" value="chop_down_if_not_single" />
+      </formatting-settings>
+    </DBN-SQL>
+  </code_scheme>
+</component>
\ No newline at end of file
diff --git a/.idea/electricity_bill_calc_service.iml b/.idea/electricity_bill_calc_service.iml
new file mode 100644
index 0000000..c956989
--- /dev/null
+++ b/.idea/electricity_bill_calc_service.iml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..28a804d
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="JavaScriptSettings">
+    <option name="languageLevel" value="ES6" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..95c0f54
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/electricity_bill_calc_service.iml" filepath="$PROJECT_DIR$/.idea/electricity_bill_calc_service.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file