--- a/devtools/client/performance-new/utils.js
+++ b/devtools/client/performance-new/utils.js
@@ -537,17 +537,17 @@ const featureDescriptions = [
       "experimental.enableProcessCPUTracks()",
     experimental: true,
   },
   {
     name: "Power Use",
     value: "power",
     title:
       "Record the value of every energy meter available on the system with " +
-      "each sample. Only available on Windows 11.",
+      "each sample. Only available on Windows 11 and Apple Silicon.",
     experimental: true,
   },
 ];
 
 module.exports = {
   formatFileSize,
   makeLinear10Scale,
   makePowerOf2Scale,

--- a/mozglue/baseprofiler/public/BaseProfilerState.h
+++ b/mozglue/baseprofiler/public/BaseProfilerState.h
@@ -216,17 +216,19 @@ class MOZ_RAII AutoProfilerStats {
           "Record markers from all registered threads")                        \
                                                                                \
     MACRO(22, "unregisteredthreads", UnregisteredThreads,                      \
           "Discover and profile unregistered threads -- beware: expensive!")   \
                                                                                \
     MACRO(23, "processcpu", ProcessCPU,                                        \
           "Sample the CPU utilization of each process")                        \
                                                                                \
-    MACRO(24, "power", Power, "Sample energy meters. (Windows 11 only)")
+    MACRO(24, "power", Power,                                                  \
+          "Sample energy meters on Windows 11 and per process power use on "   \
+          "Apple Silicon")
 // *** Synchronize with lists in ProfilerState.h and geckoProfiler.json ***
 
 struct ProfilerFeature {
 #  define DECLARE(n_, str_, Name_, desc_)                                \
     static constexpr uint32_t Name_ = (1u << n_);                        \
     [[nodiscard]] static constexpr bool Has##Name_(uint32_t aFeatures) { \
       return aFeatures & Name_;                                          \
     }                                                                    \

new file mode 100644
--- /dev/null
+++ b/tools/profiler/core/PowerCounters-mac.cpp
@@ -0,0 +1,47 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "PowerCounters.h"
+
+#include <mach/mach.h>
+
+class ProcessPower final : public BaseProfilerCount {
+ public:
+  ProcessPower()
+      : BaseProfilerCount("task_energy", nullptr, nullptr, "power",
+                          "Power utilization") {}
+
+  CountSample Sample() override {
+    CountSample result;
+    result.count = GetTaskEnergy();
+    result.number = 0;
+    result.isSampleNew = true;
+    return result;
+  }
+
+ private:
+  int64_t GetTaskEnergy() {
+    task_power_info_v2_data_t task_power_info;
+    mach_msg_type_number_t count = TASK_POWER_INFO_V2_COUNT;
+    kern_return_t kr = task_info(mach_task_self(), TASK_POWER_INFO_V2,
+                                 (task_info_t)&task_power_info, &count);
+    if (kr != KERN_SUCCESS) {
+      return 0;
+    }
+
+    // task_energy is in nanojoules. To be consistent with the Windows EMI
+    // API, return values in picowatt-hour.
+    return task_power_info.task_energy / 3.6;
+  }
+};
+
+PowerCounters::PowerCounters() : mProcessPower(new ProcessPower()) {
+  if (mProcessPower) {
+    (void)mCounters.append(mProcessPower.get());
+  }
+}
+
+PowerCounters::~PowerCounters() { mCounters.clear(); }
+
+void PowerCounters::Sample() {}

--- a/tools/profiler/core/PowerCounters.h
+++ b/tools/profiler/core/PowerCounters.h
@@ -8,20 +8,23 @@
 #include "PlatformMacros.h"
 #include "mozilla/ProfilerCounts.h"
 #include "mozilla/UniquePtr.h"
 #include "mozilla/Vector.h"
 
 #if defined(_MSC_VER)
 class PowerMeterDevice;
 #endif
+#if defined(GP_PLAT_arm64_darwin)
+class ProcessPower;
+#endif
 
 class PowerCounters {
  public:
-#if defined(_MSC_VER)
+#if defined(_MSC_VER) || defined(GP_PLAT_arm64_darwin)
   explicit PowerCounters();
   ~PowerCounters();
   void Sample();
 #else
   explicit PowerCounters(){};
   ~PowerCounters(){};
   void Sample(){};
 #endif
@@ -30,11 +33,14 @@ class PowerCounters {
   const CountVector& GetCounters() { return mCounters; }
 
  private:
   CountVector mCounters;
 
 #if defined(_MSC_VER)
   mozilla::Vector<mozilla::UniquePtr<PowerMeterDevice>> mPowerMeterDevices;
 #endif
+#if defined(GP_PLAT_arm64_darwin)
+  mozilla::UniquePtr<ProcessPower> mProcessPower;
+#endif
 };
 
 #endif /* ndef TOOLS_POWERCOUNTERS_H_ */

--- a/tools/profiler/moz.build
+++ b/tools/profiler/moz.build
@@ -81,16 +81,20 @@ if CONFIG["MOZ_GECKO_PROFILER"]:
         if CONFIG["CPU_ARCH"] == "arm" and CONFIG["OS_TARGET"] != "FreeBSD":
             SOURCES += [
                 "core/EHABIStackWalk.cpp",
             ]
     elif CONFIG["OS_TARGET"] == "Darwin":
         UNIFIED_SOURCES += [
             "core/shared-libraries-macos.cc",
         ]
+        if CONFIG["CPU_ARCH"] == "aarch64":
+            UNIFIED_SOURCES += [
+                "core/PowerCounters-mac.cpp",
+            ]
     elif CONFIG["OS_TARGET"] == "WINNT":
         if CONFIG["CC_TYPE"] == "clang-cl":
             UNIFIED_SOURCES += [
                 "core/PowerCounters-win.cpp",
             ]
         SOURCES += [
             "core/shared-libraries-win32.cc",
         ]

--- a/tools/profiler/public/ProfilerState.h
+++ b/tools/profiler/public/ProfilerState.h
@@ -95,17 +95,19 @@
         "Record markers from all registered threads")                        \
                                                                              \
   MACRO(22, "unregisteredthreads", UnregisteredThreads,                      \
         "Discover and profile unregistered threads -- beware: expensive!")   \
                                                                              \
   MACRO(23, "processcpu", ProcessCPU,                                        \
         "Sample the CPU utilization of each process")                        \
                                                                              \
-  MACRO(24, "power", Power, "Sample energy meters. (Windows 11 only)")
+  MACRO(24, "power", Power,                                                  \
+        "Sample energy meters on Windows 11 and per process power use on "   \
+        "Apple Silicon")
 // *** Synchronize with lists in BaseProfilerState.h and geckoProfiler.json ***
 
 struct ProfilerFeature {
 #define DECLARE(n_, str_, Name_, desc_)                                \
   static constexpr uint32_t Name_ = (1u << n_);                        \
   [[nodiscard]] static constexpr bool Has##Name_(uint32_t aFeatures) { \
     return aFeatures & Name_;                                          \
   }                                                                    \