diff --git a/chassis_state_manager.cpp b/chassis_state_manager.cpp
index 9c16ea0..9bfdb95 100644
--- a/chassis_state_manager.cpp
+++ b/chassis_state_manager.cpp
@@ -7,6 +7,7 @@
 #include "xyz/openbmc_project/State/Shutdown/Power/error.hpp"
 
 #include <fmt/format.h>
+#include <fmt/printf.h>
 
 #include <cereal/archives/json.hpp>
 #include <phosphor-logging/elog-errors.hpp>
@@ -154,9 +155,18 @@
                         "Chassis power was on before the BMC reboot and it is off now");
 
                     // Reset host sensors since system is off now
+                    // TODO: when CHASSIS_BLACKOUT_TGT will include this service
+                    // Needs to be removed when the blackout target is merged
                     startUnit(fmt::format(RESET_HOST_SENSORS_SVC_FMT, id));
 
                     setStateChangeTime();
+                    // Generate file indicating AC loss occurred
+                    std::string chassisLostPowerFileFmt =
+                        fmt::sprintf(CHASSIS_LOST_POWER_FILE, id);
+                    fs::create_directories(BASE_FILE_DIR);
+                    fs::path chassisPowerLossFile{chassisLostPowerFileFmt};
+                    std::ofstream outfile(chassisPowerLossFile);
+                    outfile.close();
 
                     // 0 indicates pinhole reset. 1 is NOT pinhole reset
                     if (phosphor::state::manager::utils::getGpioValue(