diff --git a/web/src/components/CaseBuilder/ProfiledUnits/ProfiledUnits.tsx b/web/src/components/CaseBuilder/ProfiledUnits/ProfiledUnits.tsx
index a016f85..3351305 100644
--- a/web/src/components/CaseBuilder/ProfiledUnits/ProfiledUnits.tsx
+++ b/web/src/components/CaseBuilder/ProfiledUnits/ProfiledUnits.tsx
@@ -23,6 +23,7 @@ import { ColumnDefinition } from "tabulator-tables";
 import { offerDownload } from "../../Common/io";
 import FileUploadElement from "../../Common/Buttons/FileUploadElement";
 import { useRef } from "react";
+import { createProfiledUnit } from "../../../core/Operations/profiledUnitOps";
 
 interface ProfiledUnitsProps {
   scenario: UnitCommitmentScenario;
@@ -98,7 +99,14 @@ const ProfiledUnitsComponent = (props: ProfiledUnitsProps) => {
     });
   };
 
-  const onAdd = () => {};
+  const onAdd = () => {
+    const [newScenario, err] = createProfiledUnit(props.scenario);
+    if (err) {
+      props.onError(err.message);
+      return;
+    }
+    props.onDataChanged(newScenario);
+  };
 
   return (
     <div>
diff --git a/web/src/core/Operations/busOperations.test.ts b/web/src/core/Operations/busOperations.test.ts
index 20263e6..14c18c5 100644
--- a/web/src/core/Operations/busOperations.test.ts
+++ b/web/src/core/Operations/busOperations.test.ts
@@ -30,18 +30,10 @@ test("changeBusData", () => {
   [scenario, err] = changeBusData("b3", "Load (MW) 04:00", "99", scenario);
   assert.equal(err, null);
 
-  assert.deepEqual(scenario, {
-    Parameters: {
-      Version: "0.4",
-      "Power balance penalty ($/MW)": 1000.0,
-      "Time horizon (h)": 5,
-      "Time step (min)": 60,
-    },
-    Buses: {
-      b1: { "Load (MW)": [99, 34.38835, 33.45083, 99, 33.25044] },
-      b2: { "Load (MW)": [14.03739, 13.48563, 13.11797, 12.9009, 13.03939] },
-      b3: { "Load (MW)": [27.3729, 26.29698, 25.58005, 25.15675, 99] },
-    },
+  assert.deepEqual(scenario.Buses, {
+    b1: { "Load (MW)": [99, 34.38835, 33.45083, 99, 33.25044] },
+    b2: { "Load (MW)": [14.03739, 13.48563, 13.11797, 12.9009, 13.03939] },
+    b3: { "Load (MW)": [27.3729, 26.29698, 25.58005, 25.15675, 99] },
   });
 });
 
@@ -54,35 +46,19 @@ test("changeBusData with invalid numbers", () => {
 test("deleteBus", () => {
   let scenario = TEST_DATA_1;
   scenario = deleteBus("b2", scenario);
-  assert.deepEqual(scenario, {
-    Parameters: {
-      Version: "0.4",
-      "Power balance penalty ($/MW)": 1000.0,
-      "Time horizon (h)": 5,
-      "Time step (min)": 60,
-    },
-    Buses: {
-      b1: { "Load (MW)": [35.79534, 34.38835, 33.45083, 32.89729, 33.25044] },
-      b3: { "Load (MW)": [27.3729, 26.29698, 25.58005, 25.15675, 25.4268] },
-    },
+  assert.deepEqual(scenario.Buses, {
+    b1: { "Load (MW)": [35.79534, 34.38835, 33.45083, 32.89729, 33.25044] },
+    b3: { "Load (MW)": [27.3729, 26.29698, 25.58005, 25.15675, 25.4268] },
   });
 });
 
 test("renameBus", () => {
   let [scenario, err] = renameBus("b2", "b99", TEST_DATA_1);
   assert(err === null);
-  assert.deepEqual(scenario, {
-    Parameters: {
-      Version: "0.4",
-      "Power balance penalty ($/MW)": 1000.0,
-      "Time horizon (h)": 5,
-      "Time step (min)": 60,
-    },
-    Buses: {
-      b1: { "Load (MW)": [35.79534, 34.38835, 33.45083, 32.89729, 33.25044] },
-      b99: { "Load (MW)": [14.03739, 13.48563, 13.11797, 12.9009, 13.03939] },
-      b3: { "Load (MW)": [27.3729, 26.29698, 25.58005, 25.15675, 25.4268] },
-    },
+  assert.deepEqual(scenario.Buses, {
+    b1: { "Load (MW)": [35.79534, 34.38835, 33.45083, 32.89729, 33.25044] },
+    b99: { "Load (MW)": [14.03739, 13.48563, 13.11797, 12.9009, 13.03939] },
+    b3: { "Load (MW)": [27.3729, 26.29698, 25.58005, 25.15675, 25.4268] },
   });
 });
 
diff --git a/web/src/core/Operations/busOperations.ts b/web/src/core/Operations/busOperations.ts
index 74b0bf8..cc80c9e 100644
--- a/web/src/core/Operations/busOperations.ts
+++ b/web/src/core/Operations/busOperations.ts
@@ -6,34 +6,27 @@
 
 import { Buses, UnitCommitmentScenario } from "../fixtures";
 import { ValidationError } from "../Validation/validate";
+import { generateTimeslots } from "../../components/Common/Forms/DataTable";
 
-const generateUniqueBusName = (scenario: UnitCommitmentScenario) => {
-  let newBusName = "b";
+export const generateUniqueName = (container: any, prefix: string): string => {
   let counter = 1;
-  let name = `${newBusName}${counter}`;
-  while (name in scenario.Buses) {
+  let name = `${prefix}${counter}`;
+  while (name in container) {
     counter++;
-    name = `${newBusName}${counter}`;
+    name = `${prefix}${counter}`;
   }
   return name;
 };
 
-const generateDefaultBusLoad = (scenario: UnitCommitmentScenario) => {
-  const T =
-    scenario.Parameters["Time horizon (h)"] *
-    (60 / scenario.Parameters["Time step (min)"]);
-  return new Array(T).fill(0);
-};
-
 export const createBus = (scenario: UnitCommitmentScenario) => {
-  const load = generateDefaultBusLoad(scenario);
-  let name = generateUniqueBusName(scenario);
+  const name = generateUniqueName(scenario.Buses, "b");
+  const timeslots = generateTimeslots(scenario);
   return {
     ...scenario,
     Buses: {
       ...scenario.Buses,
       [name]: {
-        "Load (MW)": load,
+        "Load (MW)": Array(timeslots.length).fill(0),
       },
     },
   };
diff --git a/web/src/core/Operations/parameterOperations.test.ts b/web/src/core/Operations/parameterOperations.test.ts
index c7ae767..5127369 100644
--- a/web/src/core/Operations/parameterOperations.test.ts
+++ b/web/src/core/Operations/parameterOperations.test.ts
@@ -15,18 +15,16 @@ import { TEST_DATA_1, TEST_DATA_2 } from "../fixtures.test";
 test("changeTimeHorizon: Shrink 1", () => {
   const [newScenario, err] = changeTimeHorizon(TEST_DATA_1, "3");
   assert(err === null);
-  assert.deepEqual(newScenario, {
-    Parameters: {
-      Version: "0.4",
-      "Power balance penalty ($/MW)": 1000.0,
-      "Time horizon (h)": 3,
-      "Time step (min)": 60,
-    },
-    Buses: {
-      b1: { "Load (MW)": [35.79534, 34.38835, 33.45083] },
-      b2: { "Load (MW)": [14.03739, 13.48563, 13.11797] },
-      b3: { "Load (MW)": [27.3729, 26.29698, 25.58005] },
-    },
+  assert.deepEqual(newScenario.Parameters, {
+    Version: "0.4",
+    "Power balance penalty ($/MW)": 1000.0,
+    "Time horizon (h)": 3,
+    "Time step (min)": 60,
+  });
+  assert.deepEqual(newScenario.Buses, {
+    b1: { "Load (MW)": [35.79534, 34.38835, 33.45083] },
+    b2: { "Load (MW)": [14.03739, 13.48563, 13.11797] },
+    b3: { "Load (MW)": [27.3729, 26.29698, 25.58005] },
   });
 });
 
@@ -51,23 +49,21 @@ test("changeTimeHorizon: Shrink 2", () => {
 test("changeTimeHorizon grow", () => {
   const [newScenario, err] = changeTimeHorizon(TEST_DATA_1, "7");
   assert(err === null);
-  assert.deepEqual(newScenario, {
-    Parameters: {
-      Version: "0.4",
-      "Power balance penalty ($/MW)": 1000.0,
-      "Time horizon (h)": 7,
-      "Time step (min)": 60,
+  assert.deepEqual(newScenario.Parameters, {
+    Version: "0.4",
+    "Power balance penalty ($/MW)": 1000.0,
+    "Time horizon (h)": 7,
+    "Time step (min)": 60,
+  });
+  assert.deepEqual(newScenario.Buses, {
+    b1: {
+      "Load (MW)": [35.79534, 34.38835, 33.45083, 32.89729, 33.25044, 0, 0],
     },
-    Buses: {
-      b1: {
-        "Load (MW)": [35.79534, 34.38835, 33.45083, 32.89729, 33.25044, 0, 0],
-      },
-      b2: {
-        "Load (MW)": [14.03739, 13.48563, 13.11797, 12.9009, 13.03939, 0, 0],
-      },
-      b3: {
-        "Load (MW)": [27.3729, 26.29698, 25.58005, 25.15675, 25.4268, 0, 0],
-      },
+    b2: {
+      "Load (MW)": [14.03739, 13.48563, 13.11797, 12.9009, 13.03939, 0, 0],
+    },
+    b3: {
+      "Load (MW)": [27.3729, 26.29698, 25.58005, 25.15675, 25.4268, 0, 0],
     },
   });
 });
diff --git a/web/src/core/Operations/profiledUnitOps.test.ts b/web/src/core/Operations/profiledUnitOps.test.ts
new file mode 100644
index 0000000..76dd431
--- /dev/null
+++ b/web/src/core/Operations/profiledUnitOps.test.ts
@@ -0,0 +1,36 @@
+/*
+ * UnitCommitment.jl: Optimization Package for Security-Constrained Unit Commitment
+ * Copyright (C) 2020-2025, UChicago Argonne, LLC. All rights reserved.
+ * Released under the modified BSD license. See COPYING.md for more details.
+ */
+
+import { TEST_DATA_1, TEST_DATA_BLANK } from "../fixtures.test";
+import assert from "node:assert";
+import { createProfiledUnit } from "./profiledUnitOps";
+
+test("createUnit", () => {
+  const [newScenario, err] = createProfiledUnit(TEST_DATA_1);
+  assert(err === null);
+  assert.deepEqual(newScenario.Generators, {
+    pu1: {
+      Bus: "b1",
+      Type: "Profiled",
+      "Cost ($/MW)": 12.5,
+      "Maximum power (MW)": [10, 12, 13, 15, 20],
+      "Minimum power (MW)": [0, 0, 0, 0, 0],
+    },
+    pu2: {
+      Bus: "b1",
+      Type: "Profiled",
+      "Cost ($/MW)": 0,
+      "Maximum power (MW)": [0, 0, 0, 0, 0],
+      "Minimum power (MW)": [0, 0, 0, 0, 0],
+    },
+  });
+});
+
+test("createUnit with blank file", () => {
+  const [newScenario, err] = createProfiledUnit(TEST_DATA_BLANK);
+  assert(err !== null);
+  assert.equal(err.message, "Profiled unit requires an existing bus.");
+});
diff --git a/web/src/core/Operations/profiledUnitOps.ts b/web/src/core/Operations/profiledUnitOps.ts
new file mode 100644
index 0000000..6075002
--- /dev/null
+++ b/web/src/core/Operations/profiledUnitOps.ts
@@ -0,0 +1,37 @@
+/*
+ * UnitCommitment.jl: Optimization Package for Security-Constrained Unit Commitment
+ * Copyright (C) 2020-2025, UChicago Argonne, LLC. All rights reserved.
+ * Released under the modified BSD license. See COPYING.md for more details.
+ */
+
+import { UnitCommitmentScenario } from "../fixtures";
+import { generateTimeslots } from "../../components/Common/Forms/DataTable";
+import { generateUniqueName } from "./busOperations";
+import { ValidationError } from "../Validation/validate";
+
+export const createProfiledUnit = (
+  scenario: UnitCommitmentScenario,
+): [UnitCommitmentScenario, ValidationError | null] => {
+  const busNames = Object.keys(scenario.Buses);
+  if (busNames.length === 0) {
+    return [scenario, { message: "Profiled unit requires an existing bus." }];
+  }
+  const timeslots = generateTimeslots(scenario);
+  const name = generateUniqueName(scenario.Generators, "pu");
+  return [
+    {
+      ...scenario,
+      Generators: {
+        ...scenario.Generators,
+        [name]: {
+          Bus: busNames[0]!,
+          Type: "Profiled",
+          "Cost ($/MW)": 0,
+          "Minimum power (MW)": Array(timeslots.length).fill(0),
+          "Maximum power (MW)": Array(timeslots.length).fill(0),
+        },
+      },
+    },
+    null,
+  ];
+};
diff --git a/web/src/core/fixtures.test.ts b/web/src/core/fixtures.test.ts
index e0cc41d..47d069c 100644
--- a/web/src/core/fixtures.test.ts
+++ b/web/src/core/fixtures.test.ts
@@ -12,7 +12,17 @@ export const TEST_DATA_1: UnitCommitmentScenario = {
     b2: { "Load (MW)": [14.03739, 13.48563, 13.11797, 12.9009, 13.03939] },
     b3: { "Load (MW)": [27.3729, 26.29698, 25.58005, 25.15675, 25.4268] },
   },
+  Generators: {
+    pu1: {
+      Bus: "b1",
+      Type: "Profiled",
+      "Cost ($/MW)": 12.5,
+      "Maximum power (MW)": [10, 12, 13, 15, 20],
+      "Minimum power (MW)": [0, 0, 0, 0, 0],
+    },
+  },
 };
+
 export const TEST_DATA_2: UnitCommitmentScenario = {
   Parameters: {
     Version: "0.4",
@@ -27,4 +37,15 @@ export const TEST_DATA_2: UnitCommitmentScenario = {
   },
 };
 
+export const TEST_DATA_BLANK: UnitCommitmentScenario = {
+  Parameters: {
+    Version: "0.4",
+    "Power balance penalty ($/MW)": 1000.0,
+    "Time horizon (h)": 5,
+    "Time step (min)": 60,
+  },
+  Buses: {},
+  Generators: {},
+};
+
 test("fixtures", () => {});