diff --git a/lamps/L0001/metrics.json b/lamps/L0001/metrics.json
index e39c1f7..3292d2d 100644
--- a/lamps/L0001/metrics.json
+++ b/lamps/L0001/metrics.json
@@ -1,6 +1,7 @@
 {
   "name": "L0001",
   "ean": "8718696822708",
+  "type": "led",
   "manufacturer": "Philips",
   "model": "LEDBulb 8W E27 3000K (68W equivalent, 770 lm)",
   "notes": "",
diff --git a/lamps/L0002/metrics.json b/lamps/L0002/metrics.json
index 86eb927..9edee8a 100644
--- a/lamps/L0002/metrics.json
+++ b/lamps/L0002/metrics.json
@@ -1,6 +1,7 @@
 {
   "name": "L0002",
   "ean": "8850646092349",
+  "type": "led",
   "manufacturer": "LAMPTAN",
   "model": "LED Bulb Gloss V2 9W E27 Daylight 6500K",
   "notes": "",
diff --git a/lamps/L0003/metrics.json b/lamps/L0003/metrics.json
index 34f0f7e..8716650 100644
--- a/lamps/L0003/metrics.json
+++ b/lamps/L0003/metrics.json
@@ -1,6 +1,7 @@
 {
   "name": "L0003",
   "ean": "8850646092905",
+  "type": "led",
   "manufacturer": "LAMPTAN",
   "model": "LED Bulb Gloss V2 9W E27 Warm White 2700K",
   "notes": "Gloss V2 series attribution from retailer listings; verify against packaging.",
diff --git a/lamps/L0004/metrics.json b/lamps/L0004/metrics.json
index 2a91407..73aab86 100644
--- a/lamps/L0004/metrics.json
+++ b/lamps/L0004/metrics.json
@@ -1,6 +1,7 @@
 {
   "name": "L0004",
   "ean": "2897624480138",
+  "type": "led",
   "manufacturer": "",
   "model": "",
   "notes": "Retailer-internal barcode (GS1 restricted range 20-29); brand and model not publicly resolvable.",
diff --git a/lamps/L0005/metrics.json b/lamps/L0005/metrics.json
index efd3bd5..0480020 100644
--- a/lamps/L0005/metrics.json
+++ b/lamps/L0005/metrics.json
@@ -1,6 +1,7 @@
 {
   "name": "L0005",
   "ean": "8718696821909",
+  "type": "led",
   "manufacturer": "",
   "model": "",
   "notes": "",
diff --git a/lamps/L0006/metrics.json b/lamps/L0006/metrics.json
index 31b284c..6afca0e 100644
--- a/lamps/L0006/metrics.json
+++ b/lamps/L0006/metrics.json
@@ -1,6 +1,7 @@
 {
   "name": "L0006",
   "ean": "8718696844984",
+  "type": "led",
   "manufacturer": "Philips",
   "model": "MyCare 9.5W",
   "notes": "",
diff --git a/lamps/L0007/metrics.json b/lamps/L0007/metrics.json
index 6a8615c..cb0b35b 100644
--- a/lamps/L0007/metrics.json
+++ b/lamps/L0007/metrics.json
@@ -1,6 +1,7 @@
 {
   "name": "L0007",
   "ean": "8718696844960",
+  "type": "led",
   "manufacturer": "Philips",
   "model": "MyCare 9.5W",
   "notes": "",
diff --git a/lamps/L0008/metrics.json b/lamps/L0008/metrics.json
index 83ec215..74f2063 100644
--- a/lamps/L0008/metrics.json
+++ b/lamps/L0008/metrics.json
@@ -1,6 +1,7 @@
 {
   "name": "L0008",
   "ean": "6988766215712",
+  "type": "led",
   "manufacturer": "ST",
   "model": "ST-009",
   "notes": "",
diff --git a/lamps/L0009/metrics.json b/lamps/L0009/metrics.json
index 2f233b1..68d5e93 100644
--- a/lamps/L0009/metrics.json
+++ b/lamps/L0009/metrics.json
@@ -1,6 +1,7 @@
 {
   "name": "L0009",
   "ean": "3897624480137",
+  "type": "led",
   "manufacturer": "TKL",
   "model": "TK-A013",
   "notes": "",
diff --git a/lamps/L0010/metrics.json b/lamps/L0010/metrics.json
index c78399a..cf0ab83 100644
--- a/lamps/L0010/metrics.json
+++ b/lamps/L0010/metrics.json
@@ -1,6 +1,7 @@
 {
   "name": "L0010",
   "ean": "6988766215705",
+  "type": "led",
   "manufacturer": "ST",
   "model": "ST-012",
   "notes": "daylight",
diff --git a/lamps/L0011/metrics.json b/lamps/L0011/metrics.json
index 396e5b1..2625ce3 100644
--- a/lamps/L0011/metrics.json
+++ b/lamps/L0011/metrics.json
@@ -1,6 +1,7 @@
 {
   "name": "L0011",
   "ean": "6988766215705",
+  "type": "led",
   "variant": "warm white",
   "rated": {
     "Phi_lm": 1800,
diff --git a/lamps/L0012/metrics.json b/lamps/L0012/metrics.json
index fad2757..2d547cb 100644
--- a/lamps/L0012/metrics.json
+++ b/lamps/L0012/metrics.json
@@ -1,6 +1,7 @@
 {
   "name": "L0012",
   "ean": "4008321211828",
+  "type": "halogen",
   "rated": {
     "Power_W": 28,
     "lifetime_h": 2000,