diff --git a/schema/queries.sql b/schema/queries01.sql
similarity index 100%
rename from schema/queries.sql
rename to schema/queries01.sql
diff --git a/schema/queries02.sql b/schema/queries02.sql
new file mode 100644
index 0000000..1694a74
--- /dev/null
+++ b/schema/queries02.sql
@@ -0,0 +1,7 @@
+select time_bucket('1 day', time) as interval,
+  round((last(exportenergyactive, time) - first(exportenergyactive, time))::numeric, 2) as energy
+  from pv_power_measurement_t
+  where time between date_trunc('month', now()) and date_trunc('month', now()) + interval '1 month'
+  group by interval
+  order by interval;
+