diff --git a/ui-ngx/src/app/shared/models/units/energy.ts b/ui-ngx/src/app/shared/models/units/energy.ts
index 8b81101574..aed2d9f903 100644
--- a/ui-ngx/src/app/shared/models/units/energy.ts
+++ b/ui-ngx/src/app/shared/models/units/energy.ts
@@ -33,7 +33,7 @@ export type EnergyMetricUnits =
   | 'GJ'
   | 'eV';
 
-export type EnergyImperialUnits = 'kcal' | 'cal' | 'Cal' | 'BTU' | 'ft·lb' | 'thm';
+export type EnergyImperialUnits = 'kcal' | 'cal' | 'Cal' | 'BTU' | 'MBtu' | 'MMBtu' | 'ft·lb' | 'thm';
 
 const METRIC: TbMeasureUnits<EnergyMetricUnits> = {
   ratio: 1 / 4.184,
@@ -117,7 +117,17 @@ const IMPERIAL: TbMeasureUnits<EnergyImperialUnits> = {
     BTU: {
       name: 'unit.british-thermal-unit',
       tags: ['heat', 'work done'],
-      to_anchor: 252.164401,
+      to_anchor: 252.1644007218,
+    },
+    MBtu: {
+      name: 'unit.thousand-british-thermal-unit',
+      tags: ['heat', 'work done'],
+      to_anchor: 252164.4007218,
+    },
+    MMBtu : {
+      name: 'unit.million-british-thermal-unit',
+      tags: ['heat', 'work done'],
+      to_anchor: 252164400.7218,
     },
     'ft·lb': {
       name: 'unit.foot-pound',
diff --git a/ui-ngx/src/app/shared/models/units/power.ts b/ui-ngx/src/app/shared/models/units/power.ts
index 937ddde675..0ba9ce802b 100644
--- a/ui-ngx/src/app/shared/models/units/power.ts
+++ b/ui-ngx/src/app/shared/models/units/power.ts
@@ -19,7 +19,18 @@ import { TbMeasure, TbMeasureUnits } from '@shared/models/unit.models';
 export type PowerUnits = PowerMetricUnits | PowerImperialUnits;
 
 export type PowerMetricUnits = 'W' | 'μW' | 'mW' | 'kW' | 'MW' | 'GW' | 'PS';
-export type PowerImperialUnits = 'BTU/s' | 'ft-lb/s' | 'hp' | 'BTU/h';
+export type PowerImperialUnits =
+  | 'ft-lb/s'
+  | 'hp'
+  | 'BTU/s'
+  | 'BTU/h'
+  | 'BTU/d'
+  | 'MBtu/s'
+  | 'MBtu/h'
+  | 'MBtu/d'
+  | 'MMBtu/s'
+  | 'MMBtu/h'
+  | 'MMBtu/d';
 
 const METRIC: TbMeasureUnits<PowerMetricUnits> = {
   ratio: 0.737562149,
@@ -65,11 +76,6 @@ const METRIC: TbMeasureUnits<PowerMetricUnits> = {
 const IMPERIAL: TbMeasureUnits<PowerImperialUnits> = {
   ratio: 1 / 0.737562149,
   units: {
-    'BTU/s': {
-      name: 'unit.btu-per-second',
-      tags: ['heat transfer', 'thermal energy'],
-      to_anchor: 778.16937,
-    },
     'ft-lb/s': {
       name: 'unit.foot-pound-per-second',
       tags: ['mechanical power'],
@@ -80,11 +86,51 @@ const IMPERIAL: TbMeasureUnits<PowerImperialUnits> = {
       tags: ['performance', 'electricity'],
       to_anchor: 550,
     },
+    'BTU/s': {
+      name: 'unit.btu-per-second',
+      tags: ['heat transfer', 'thermal energy'],
+      to_anchor: 778.16937,
+    },
     'BTU/h': {
       name: 'unit.btu-per-hour',
       tags: ['heat transfer', 'thermal energy', 'HVAC'],
       to_anchor: 0.216158,
     },
+    'BTU/d': {
+      name: 'unit.btu-per-day',
+      tags: ['heat transfer', 'thermal energy'],
+      to_anchor: 0.00900613,
+    },
+    'MBtu/s': {
+      name: 'unit.btu-per-second',
+      tags: ['heat transfer', 'thermal energy'],
+      to_anchor: 778169.37,
+    },
+    'MBtu/h': {
+      name: 'unit.btu-per-hour',
+      tags: ['heat transfer', 'thermal energy'],
+      to_anchor: 216.158,
+    },
+    'MBtu/d': {
+      name: 'unit.btu-per-day',
+      tags: ['heat transfer', 'thermal energy'],
+      to_anchor: 9.00613,
+    },
+    'MMBtu/s': {
+      name: 'unit.btu-per-second',
+      tags: ['heat transfer', 'thermal energy'],
+      to_anchor: 778169370,
+    },
+    'MMBtu/h': {
+      name: 'unit.btu-per-hour',
+      tags: ['heat transfer', 'thermal energy'],
+      to_anchor: 216158,
+    },
+    'MMBtu/d': {
+      name: 'unit.btu-per-day',
+      tags: ['heat transfer', 'thermal energy'],
+      to_anchor: 9006.13,
+    },
   },
 };
 
diff --git a/ui-ngx/src/assets/locale/locale.constant-en_US.json b/ui-ngx/src/assets/locale/locale.constant-en_US.json
index a98b2aecf9..06a461b412 100644
--- a/ui-ngx/src/assets/locale/locale.constant-en_US.json
+++ b/ui-ngx/src/assets/locale/locale.constant-en_US.json
@@ -6124,6 +6124,8 @@
         "electron-volts": "Electron volts",
         "joules-per-coulomb": "Joules per Coulomb",
         "british-thermal-unit": "British Thermal Units",
+        "thousand-british-thermal-unit": "Thousand British Thermal Units",
+        "million-british-thermal-unit": "Million British Thermal Units",
         "foot-pound": "Foot-pound",
         "calorie": "Calorie",
         "small-calorie": "Small Calorie",
@@ -6154,8 +6156,15 @@
         "watt-per-square-inch": "Watts per square inch",
         "kilowatt-per-square-inch": "Kilowatts per square inch",
         "horsepower": "Horsepower",
-        "btu-per-hour": "British thermal units/hour",
-        "btu-per-second": "British thermal units/second",
+        "btu-per-hour": "British thermal units per hour",
+        "btu-per-second": "British thermal units per second",
+        "btu-per-day": "British thermal units per day",
+        "mbtu-per-hour": "Thousand British thermal units per hour",
+        "mbtu-per-second": "Thousand British thermal units per second",
+        "mbtu-per-day": "Thousand British thermal units per day",
+        "mmbtu-per-hour": "Million British thermal units per hour",
+        "mmbtu-per-second": "Million British thermal units per second",
+        "mmbtu-per-day": "Million British thermal units per day",
         "foot-pound-per-second": "foot-pound per second",
         "coulomb": "Coulomb",
         "millicoulomb": "Millicoulombs",