diff --git a/meson.build b/meson.build
index 0bb8aee..daf1c15 100644
--- a/meson.build
+++ b/meson.build
@@ -23,7 +23,7 @@
 conf_data.set('MAX_CPUS', get_option('max-cpus'))
 conf_data.set('OCC_CPU_TEMP_SENSOR_TYPE', 0xC0)
 conf_data.set('OCC_DIMM_TEMP_SENSOR_TYPE', 0xD0)
-conf_data.set('PS_DERATING_FACTOR', 90)
+conf_data.set('PS_DERATING_FACTOR', get_option('ps-derating-factor'))
 
 if get_option('i2c-occ').enabled()
     conf_data.set_quoted('OCC_HWMON_PATH', '/sys/bus/i2c/drivers/occ-hwmon/')
diff --git a/meson_options.txt b/meson_options.txt
index a948e46..7aad4ba 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -34,6 +34,14 @@
 )
 
 option(
+    'ps-derating-factor',
+    type : 'integer',
+    min:0, max:100,
+    description : 'Power supply derating factor',
+    value: 90
+)
+
+option(
     'with-host-communication-protocol',
     type : 'string',
     description : 'To specify the host communication protocol'