diff --git a/defaults/docs-defaults.yaml b/defaults/docs-defaults.yaml
index f04c7cff..2cf7d212 100644
--- a/defaults/docs-defaults.yaml
+++ b/defaults/docs-defaults.yaml
@@ -6,6 +6,12 @@ defaults:
     smart-speaker: 160
     tablet: 160
     tv: 160
+  default_audio_power_utilization:
+    pc: 0.840000000
+    phone: 0.360000000
+    smart-speaker: 1.000000000
+    tablet: 0.360000000
+    tv: 0.920000000
   default_average_data_kb_per_session_seconds_excluding_ads_by_channel:
     app: 29.500000000
     search: 1.011000000
diff --git a/docs/calculations.mdx b/docs/calculations.mdx
index 32bda0db..2db826c5 100644
--- a/docs/calculations.mdx
+++ b/docs/calculations.mdx
@@ -122,17 +122,17 @@ Native product carousel
 
 ### Ad Platform
 
-| Field                                                 | Description                                                                                 |
-| ----------------------------------------------------- | ------------------------------------------------------------------------------------------- |
-| `emissions_per_creative_request_per_geo_gco2_per_imp` | Adjusted, allocated emissions per creative request by continent (NAMER, LATAM, EMEA, JAPAC) |
-| `usage_emissions_per_bid_request_per_geo_gco2_per_imp`      | Adjusted, allocated emissions per bid request by continent (NAMER, LATAM, EMEA, JAPAC)      |
-| `usage_emissions_per_rtdp_request_per_geo_gco2_per_imp`     | Adjusted, allocated emissions per rtdp request by continent (NAMER, LATAM, EMEA, JAPAC)     |
-| `bidders`                                             | Array of ad platforms that are sent bid requests                                            |
-| `real_time_data_providers`                            | Array of ad platforms that are sent real-time data requests (not propagated)                |
-| `distribution_rate_by_bidder_by_country`              | Traffic shaping data for each bidder by country (eg `'xandr.com', 'US', 0.58`)              |
-| `average_bid_request_size`                            | Average size of a client-side bid request                                                   |
-| `sends_client_side_requests`                          | Does this platform send client-side bid requests (eg prebid client)                         |
-| `model_quality`                                       | Model quality (1-5)                                                                         |
+| Field                                                   | Description                                                                                 |
+| ------------------------------------------------------- | ------------------------------------------------------------------------------------------- |
+| `emissions_per_creative_request_per_geo_gco2_per_imp`   | Adjusted, allocated emissions per creative request by continent (NAMER, LATAM, EMEA, JAPAC) |
+| `usage_emissions_per_bid_request_per_geo_gco2_per_imp`  | Adjusted, allocated emissions per bid request by continent (NAMER, LATAM, EMEA, JAPAC)      |
+| `usage_emissions_per_rtdp_request_per_geo_gco2_per_imp` | Adjusted, allocated emissions per rtdp request by continent (NAMER, LATAM, EMEA, JAPAC)     |
+| `bidders`                                               | Array of ad platforms that are sent bid requests                                            |
+| `real_time_data_providers`                              | Array of ad platforms that are sent real-time data requests (not propagated)                |
+| `distribution_rate_by_bidder_by_country`                | Traffic shaping data for each bidder by country (eg `'xandr.com', 'US', 0.58`)              |
+| `average_bid_request_size`                              | Average size of a client-side bid request                                                   |
+| `sends_client_side_requests`                            | Does this platform send client-side bid requests (eg prebid client)                         |
+| `model_quality`                                         | Model quality (1-5)                                                                         |
 
 ### Placement
 
@@ -435,12 +435,6 @@ for platform in [creative_platforms, ad_format.ad_platforms]:
 ### Creative Delivery - Consumer Device
 
 ```
-audio_device_coverage =
-      device_type == 'smart-speaker' ? 1 : 0
-audio_device_coverage_seconds =
-      audio_device_coverage x
-      audio_duration
-
 device_pixels = default_device_width[device_type] x default_device_height[device_type]
 rendered_width = ad_format.rendered_width_pixels ?? default_device_width[device_type]
 rendered_height = ad_format.rendered_height_pixels ?? default_device_height[device_type]
@@ -453,10 +447,11 @@ time_in_view =
       creative_time_in_view_seconds ??
       default_time_in_view_seconds
 
-device_coverage_seconds =
-      audio_duration ?
-      audio_device_coverage_seconds :
-      visual_device_coverage x time_in_view
+if channel == digital-audio :
+	device_power_utilization == 'smart-speaker' ? 1 : default_audio_power_utilization[device_type]
+	energy_adjusted_active_seconds = device_power_utilization * audio_duration
+else:
+	energy_adjusted_active_seconds = visual_device_coverage x time_in_view
 
 creative_consumer_device_usage_emissions_gco2_per_imp =
       device_coverage_seconds / 3600 x
diff --git a/docs/snippets/defaults_consumer_device.mdx b/docs/snippets/defaults_consumer_device.mdx
index 1d893820..3540c721 100644
--- a/docs/snippets/defaults_consumer_device.mdx
+++ b/docs/snippets/defaults_consumer_device.mdx
@@ -23,4 +23,10 @@ default_device_embodied_emissions_per_second:
     pc:             0.0132
     tablet:         0.0128
     tv:             0.00889
+default_audio_power_utilization:
+  pc: 0.84
+  phone: 0.36
+  tablet: 0.36
+  tv: 0.92
+  smart-speaker: 1.0
 ```
diff --git a/scope3_methodology/test/test_api.py b/scope3_methodology/test/test_api.py
index 60bff4fa..b3792247 100644
--- a/scope3_methodology/test/test_api.py
+++ b/scope3_methodology/test/test_api.py
@@ -240,7 +240,7 @@ def test_startup(self):
         )
 
         docs_defs = docs_defaults
-        self.assertEqual(len(docs_defs), 50)
+        self.assertEqual(len(docs_defs), 51)
 
     def test_get_all_con_networking_connection_device_fixed_defaults(self):
         """Test get_all_networking_connection_device_defaults returns expected output"""