diff --git a/CHANGELOG.md b/CHANGELOG.md
index 13ec56f..b358dd3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,17 @@
 # Changelog
 
+## heishamon 0.8.0
+
+Read `hp_power_w` from `main/Heat_Power_Consumption` (TOP16), with a
+`power_topic` override. This is the heat-mode input, not total electrical
+input in cooling or DHW mode. The new reading remains unverified on
+hardware. Invalid negative or non-finite power values clear the reading;
+newer pumps can send −200 on this legacy topic. Power expires after
+60 seconds without its own update, even if other topics keep arriving.
+
+Use `hp_outdoor_temp_c` for outdoor temperature, matching the other
+heat-pump drivers and FTW's Heating view. Prior history keeps its old key.
+
 ## heishamon 0.7.0
 
 Declare the existing `set_heat_curve_offset` control: −3…+3 °C, in steps
@@ -315,7 +327,6 @@ Driver versions follow [Semantic Versioning](https://semver.org/spec/v2.0.0.html
   comments. No behaviour change.
 
 ### Added
-
 - **acuvim** 0.4.1 — Accuenergy Acuvim II three-phase revenue-grade meter,
   migrated from the Blixt L1 driver source (POI meter on Blixt
   SvK sites). One bundled FC03 float32 block + a bounded probe of the
diff --git a/SUPPORT_STATUS.md b/SUPPORT_STATUS.md
index 450e4e9..40e329d 100644
--- a/SUPPORT_STATUS.md
+++ b/SUPPORT_STATUS.md
@@ -76,8 +76,8 @@ Catalog source is not proof that a target can install or run a driver.
 | growatt | 2.1.2 | blixt-l1 | not_assessed | — | not_recorded | not_assessed |
 | hardybarth | 1.0.1 | ftw-core | not_assessed | — | not_recorded | not_assessed |
 | hardybarth | 1.0.1 | blixt-l1 | not_assessed | — | not_recorded | not_assessed |
-| heishamon | 0.7.0 | ftw-core | not_assessed | — | not_recorded | not_assessed |
-| heishamon | 0.7.0 | blixt-l1 | not_assessed | — | not_recorded | not_assessed |
+| heishamon | 0.8.0 | ftw-core | not_assessed | — | not_recorded | not_assessed |
+| heishamon | 0.8.0 | blixt-l1 | not_assessed | — | not_recorded | not_assessed |
 | hello | 1.1.2 | ftw-core | not_assessed | — | not_recorded | not_assessed |
 | hello | 1.1.2 | blixt-l1 | not_assessed | — | not_recorded | not_assessed |
 | huawei | 2.1.3 | ftw-core | not_assessed | — | not_recorded | not_assessed |
diff --git a/devices.yaml b/devices.yaml
index 9258bb2..592c11c 100644
--- a/devices.yaml
+++ b/devices.yaml
@@ -1008,7 +1008,7 @@ manufacturers:
         protocols:
           - protocol: mqtt
             driver: "heishamon"
-            version: "0.7.0"
+            version: "0.8.0"
             ders: [heatpump]
             control: true
         firmware_versions: ""
diff --git a/drivers/lua/heishamon.lua b/drivers/lua/heishamon.lua
index 1ba2263..a0f466e 100644
--- a/drivers/lua/heishamon.lua
+++ b/drivers/lua/heishamon.lua
@@ -24,6 +24,14 @@
 --         min_offset: -3
 --         max_offset: 3
 --         safe_offset: 0
+--         power_topic: Heat_Power_Consumption
+--
+-- power_topic names a main/ topic carrying electrical power in W.
+-- The default is Heat_Power_Consumption (TOP16), the heat-mode input.
+-- It is not total input in cooling or DHW mode. Pumps with an extra data
+-- block can send invalid negative values on this legacy topic; omit them.
+-- This new reading has not been checked on hardware.
+-- Source: https://github.com/heishamon/HeishaMon/blob/main/MQTT-Topics.md
 
 DRIVER = {
   host_api_min = 1,
@@ -31,7 +39,7 @@ DRIVER = {
   id           = "heishamon",
   name         = "Panasonic Aquarea (Heishamon)",
   manufacturer = "Panasonic",
-  version      = "0.7.0",
+  version      = "0.8.0",
   protocols    = { "mqtt" },
   capabilities = { "heatpump" },
   description  = "Panasonic Aquarea H/J/K/L/M-series heat pump via Heishamon MQTT bridge. Controls Zone 1 heat curve offset (Z1_Heat_Request_Temp) in range -3..+3 °C.",
@@ -41,7 +49,7 @@ DRIVER = {
   verification_status = "experimental",
   verified_by = { "Rolf (Runneval)" },
   verified_at = "2026-06-21",
-  verification_notes = "Tested on WH-SXC09H3E8 (H-series) with Heishamon Large v4.1.6 on ESP32. MQTT via core-mosquitto on HA Green. Live metrics confirmed. Offset control verified via Z1_Heat_Request_Temp.",
+  verification_notes = "Existing metrics and offset control tested on WH-SXC09H3E8 (H-series) with Heishamon Large v4.1.6 on ESP32 on 2026-06-21. The new hp_power_w reading is not hardware-verified; its default topic reports heat-mode input, not total input in cooling or DHW mode.",
   -- What an operator may command, in terms a host UI can render without
   -- knowing this driver. The bounds are the defaults below; min_offset and
   -- max_offset can narrow them in config, and driver_command clamps to
@@ -71,7 +79,9 @@ local outlet_temp    = nil
 local inlet_temp     = nil
 local target_temp    = nil
 local z1_offset      = nil
+local power_w        = nil
 local last_msg_ts    = 0
+local last_power_ts  = 0
 local STALE_AFTER_MS = 60000
 
 -- Config (overridable via config.yaml)
@@ -79,6 +89,7 @@ local base_topic   = "panasonic_heat_pump"
 local min_offset   = -3
 local max_offset   = 3
 local safe_offset  = 0
+local power_topic  = "Heat_Power_Consumption"
 
 ----------------------------------------------------------------------------
 -- Lifecycle
@@ -92,6 +103,7 @@ function driver_init(config)
         if config.min_offset  then min_offset  = tonumber(config.min_offset)  or -3   end
         if config.max_offset  then max_offset  = tonumber(config.max_offset)  or  3   end
         if config.safe_offset then safe_offset = tonumber(config.safe_offset) or  0   end
+        if config.power_topic then power_topic = config.power_topic                   end
     end
 
     -- Subscribe broadly to all Heishamon topics
@@ -104,7 +116,8 @@ function driver_init(config)
 
     host.log("info", "Heishamon: initialized, base_topic=" .. base_topic
         .. " offset_range=[" .. min_offset .. ".." .. max_offset .. "]"
-        .. " safe_offset=" .. safe_offset)
+        .. " safe_offset=" .. safe_offset
+        .. " power_topic=" .. power_topic)
 end
 
 function driver_poll()
@@ -114,7 +127,18 @@ function driver_poll()
 
     for _, msg in ipairs(messages) do
         local val = tonumber(msg.payload)
-        if val ~= nil then
+        if msg.topic == base_topic .. "/main/" .. power_topic then
+            -- Heat consumption cannot be negative. Some newer pumps use
+            -- -200 as an invalid value on the legacy power topic.
+            if val ~= nil and val == val and val >= 0 and val < math.huge then
+                power_w       = val
+                last_power_ts = now
+                last_msg_ts   = now
+            else
+                power_w       = nil
+                last_power_ts = 0
+            end
+        elseif val ~= nil then
             if msg.topic == base_topic .. "/main/Outside_Temp" then
                 outside_temp = val
                 last_msg_ts  = now
@@ -143,14 +167,24 @@ function driver_poll()
         inlet_temp   = nil
         target_temp  = nil
         z1_offset    = nil
+        power_w      = nil
+        last_power_ts = 0
+    elseif last_power_ts > 0 and (now - last_power_ts) > STALE_AFTER_MS then
+        host.log("warn", "Heishamon: no power reading for "
+            .. tostring(STALE_AFTER_MS) .. " ms — power stale")
+        power_w       = nil
+        last_power_ts = 0
     end
 
-    -- Emit metrics
-    if outside_temp ~= nil then host.emit_metric("hp_outside_temp_c", outside_temp, "°C") end
+    -- Emit metrics. Names are the ones FTW's heating view reads: it finds a
+    -- heat pump by hp_power_w and charts the outdoor temperature under
+    -- hp_outdoor_temp_c, the same names nibe_local and myuplink report.
+    if outside_temp ~= nil then host.emit_metric("hp_outdoor_temp_c", outside_temp, "°C") end
     if outlet_temp  ~= nil then host.emit_metric("hp_outlet_temp_c",  outlet_temp,  "°C") end
     if inlet_temp   ~= nil then host.emit_metric("hp_inlet_temp_c",   inlet_temp,   "°C") end
     if target_temp  ~= nil then host.emit_metric("hp_target_temp_c",  target_temp,  "°C") end
     if z1_offset    ~= nil then host.emit_metric("hp_z1_heat_offset", z1_offset,    "°C") end
+    if power_w      ~= nil then host.emit_metric("hp_power_w",        power_w,      "W")  end
 
     return 5000
 end
@@ -205,4 +239,6 @@ function driver_cleanup()
     inlet_temp   = nil
     target_temp  = nil
     z1_offset    = nil
+    power_w      = nil
+    last_power_ts = 0
 end
diff --git a/drivers/tests/lua_harness/test_heishamon_power_freshness.lua b/drivers/tests/lua_harness/test_heishamon_power_freshness.lua
new file mode 100644
index 0000000..6591f0b
--- /dev/null
+++ b/drivers/tests/lua_harness/test_heishamon_power_freshness.lua
@@ -0,0 +1,60 @@
+dofile("drivers/tests/lua_harness/host_mock.lua")
+host.reset()
+dofile("drivers/lua/heishamon.lua")
+driver_init({})
+
+host._mqtt_buffer = {
+    {
+        topic = "panasonic_heat_pump/main/Heat_Power_Consumption",
+        payload = "4200",
+    },
+    {
+        topic = "panasonic_heat_pump/main/Outside_Temp",
+        payload = "5",
+    },
+}
+driver_poll()
+
+local fresh_power = host._metrics.hp_power_w
+if fresh_power == nil or fresh_power.value ~= 4200 then
+    error("fresh Heishamon power reading was not emitted")
+end
+
+host._metrics = {}
+host._millis_counter = 60100
+host._mqtt_buffer = {{
+    topic = "panasonic_heat_pump/main/Outside_Temp",
+    payload = "6",
+}}
+driver_poll()
+
+if host._metrics.hp_power_w ~= nil then
+    error("stale Heishamon power survived an unrelated fresh topic")
+end
+
+local fresh_outdoor = host._metrics.hp_outdoor_temp_c
+if fresh_outdoor == nil or fresh_outdoor.value ~= 6 then
+    error("fresh unrelated Heishamon telemetry was dropped with stale power")
+end
+
+-- Newer heat pumps can send -200 on the old power topic. Invalid values
+-- must clear the previous power reading while other measurements survive.
+for _, invalid in ipairs({"-200", "nan", "1e99"}) do
+    host._metrics = {}
+    host._mqtt_buffer = {{topic="panasonic_heat_pump/main/Heat_Power_Consumption", payload="4200"}}
+    driver_poll()
+    assert(host._metrics.hp_power_w.value == 4200, "valid power did not recover")
+    host._metrics = {}
+    host._mqtt_buffer = {
+        {topic="panasonic_heat_pump/main/Heat_Power_Consumption", payload=invalid},
+        {topic="panasonic_heat_pump/main/Outside_Temp", payload="7"},
+    }
+    driver_poll()
+    assert(host._metrics.hp_power_w == nil, "invalid power was emitted: " .. invalid)
+    assert(host._metrics.hp_outdoor_temp_c.value == 7, "invalid power dropped outdoor temperature")
+end
+
+host._metrics = {}
+host._mqtt_buffer = {{topic="panasonic_heat_pump/main/Heat_Power_Consumption", payload="0"}}
+driver_poll()
+assert(host._metrics.hp_power_w.value == 0, "measured zero power was dropped")
diff --git a/drivers/tests/test_stale_reads.py b/drivers/tests/test_stale_reads.py
index 5727056..f8edfb9 100644
--- a/drivers/tests/test_stale_reads.py
+++ b/drivers/tests/test_stale_reads.py
@@ -28,6 +28,13 @@ def test_mqtt_driver_does_not_emit_cached_data_on_idle_poll(driver_name):
     run_lua("drivers/tests/lua_harness/test_mqtt_stale.lua", driver_name)
 
 
+def test_heishamon_power_freshness_is_not_extended_by_other_topics():
+    run_lua(
+        "drivers/tests/lua_harness/test_heishamon_power_freshness.lua",
+        "heishamon",
+    )
+
+
 @pytest.mark.parametrize("app", ["ProEM", "MiniPMG3", "Plus2PM"])
 def test_shelly_poll_emits_nothing_when_all_reads_fail(app):
     run_lua("drivers/tests/lua_harness/test_shelly_failures.lua", app)
diff --git a/index.yaml b/index.yaml
index 75e4ce7..3dff6c9 100644
--- a/index.yaml
+++ b/index.yaml
@@ -331,15 +331,15 @@ drivers:
     size_bytes: 2193
     sha256: "517e086af899dc511c86b00460cd8ce052a8d4973edee8b018e5824d4b550d6e"
   - name: "heishamon"
-    version: "0.7.0"
+    version: "0.8.0"
     tier: core
     protocol: mqtt
     connectivity: local
     setup: [bridge]
     ders: [heatpump]
     control: true
-    size_bytes: 7932
-    sha256: "aed6707a656a7e4e17c5edd00e8d081ed485b580d078173c13bdad75d9ffcaac"
+    size_bytes: 9855
+    sha256: "5c322f14e58a2b9aad900813bea9438127249ebae2e76a4208cd74536703d7b6"
   - name: "hello"
     version: "1.1.2"
     tier: community
diff --git a/manifests/heishamon.yaml b/manifests/heishamon.yaml
index 7403568..6ac59b8 100644
--- a/manifests/heishamon.yaml
+++ b/manifests/heishamon.yaml
@@ -1,5 +1,5 @@
 name: "heishamon"
-version: "0.7.0"
+version: "0.8.0"
 tier: core
 author: "Sourceful Labs AB"
 protocol: mqtt
@@ -16,9 +16,15 @@ tested_devices:
     notes: "Panasonic Aquarea H/J/K/L/M-series heat pump via Heishamon MQTT bridge. Controls Zone 1 heat curve offset (Z1_Heat_Request_Temp) in range -3..+3 °C."
     min_driver_version: "0.4.0"
 min_host_version: "2.0.0"
-size_bytes: 7932
+size_bytes: 9855
 dkb_id: "heishamon"
-sha256: "aed6707a656a7e4e17c5edd00e8d081ed485b580d078173c13bdad75d9ffcaac"
+sha256: "5c322f14e58a2b9aad900813bea9438127249ebae2e76a4208cd74536703d7b6"
 signature: ""
 
 bytecode_sha256: ""
+
+upstream_docs:
+  - url: "https://raw.githubusercontent.com/heishamon/HeishaMon/main/MQTT-Topics.md"
+    title: "HeishaMon MQTT topics"
+    kind: api_docs
+    url_stability: stable
diff --git a/support-status.json b/support-status.json
index 4f3ea99..5179564 100644
--- a/support-status.json
+++ b/support-status.json
@@ -758,7 +758,7 @@
     },
     {
       "catalog_source": true,
-      "catalog_version": "0.7.0",
+      "catalog_version": "0.8.0",
       "driver_id": "heishamon",
       "targets": {
         "blixt-l1": {