diff --git a/src/main/angular/config.less b/src/main/angular/config.less
new file mode 100644
index 0000000..30e7e29
--- /dev/null
+++ b/src/main/angular/config.less
@@ -0,0 +1,27 @@
+/* bright theme */
+
+@foreground: gray;
+@background: white;
+
+@consumption: orange;
+@purchase: orangered;
+@production: dodgerblue;
+@self: forestgreen;
+@delivery: magenta;
+
+@consumptionBack: @consumption;
+@purchaseBack: @purchase;
+@productionBack: @production;
+@selfBack: @self;
+@deliveryBack: @delivery;
+
+/* dark theme */
+
+@foreground: gray;
+@background: #11171b;
+
+@consumptionBack: #856938;
+@purchaseBack: #71361d;
+@productionBack: #2d4255;
+@selfBack: #2b4e2b;
+@deliveryBack: #753475;
diff --git a/src/main/angular/src/app/app.component.html b/src/main/angular/src/app/app.component.html
index c1e9121..db697e7 100644
--- a/src/main/angular/src/app/app.component.html
+++ b/src/main/angular/src/app/app.component.html
@@ -6,7 +6,7 @@
 
   <div class="content">
     <div class="entry consumption" [class.zero]="powerConsumption?.zero">
-      <div class="name">Verbrauch</div>
+      <div class="name">Bedarf</div>
       <div class="percent">&nbsp;</div>
       <div class="value">{{ powerConsumption?.formatted }}</div>
     </div>
@@ -15,13 +15,13 @@
       <div class="percent">{{ powerPurchasePercent?.formatted }}</div>
       <div class="value">{{ powerPurchase?.formatted }}</div>
     </div>
-    <div class="entry production" [class.zero]="powerProduced?.zero">
+    <div class="entry production" [class.zero]="powerProduction?.zero">
       <div class="name">Produktion</div>
       <div class="percent">{{ powerProducedPercent?.formatted }}</div>
-      <div class="value">{{ powerProduced?.formatted }}</div>
+      <div class="value">{{ powerProduction?.formatted }}</div>
     </div>
     <div class="entry self" [class.zero]="powerSelf?.zero">
-      <div class="name">Eigenverbrauch</div>
+      <div class="name">Eigenbedarf</div>
       <div class="percent">{{ powerSelfPercent?.formatted }}</div>
       <div class="value">{{ powerSelf?.formatted }}</div>
     </div>
@@ -32,14 +32,14 @@
     </div>
   </div>
 
+  <app-percent-bar [produktion]="powerProduction" [self]="powerSelf" [purchase]="powerPurchase" [delivery]="powerDelivery"></app-percent-bar>
+
 </div>
 
 <div class="section">
 
   <div class="title">
     Energie
-    <span class="live" *ngIf="interval">Live</span>
-    <span class="archive" *ngIf="!interval">Archiv</span>
   </div>
 
   <div class="option">
@@ -56,7 +56,7 @@
 
   <div class="content">
     <div class="entry consumption" [class.zero]="aggregations.energyConsumed?.zero">
-      <div class="name">Verbrauch</div>
+      <div class="name">Bedarf</div>
       <div class="percent">&nbsp;</div>
       <div class="value">{{ aggregations.energyConsumed?.formatted }}</div>
     </div>
@@ -71,17 +71,19 @@
       <div class="value">{{ aggregations.energyProduced?.delta?.formatted }}</div>
     </div>
     <div class="entry self" [class.zero]="aggregations.energySelf?.zero">
-      <div class="name">Eigenverbrauch</div>
+      <div class="name">Eigenbedarf</div>
       <div class="percent">{{ aggregations.energySelfPercent?.formatted }}</div>
       <div class="value">{{ aggregations.energySelf?.formatted }}</div>
     </div>
     <div class="entry delivery" [class.zero]="aggregations.energyDelivered?.delta?.zero">
-      <div class="name">Eingespeist</div>
+      <div class="name">Einspeisung</div>
       <div class="percent">{{ aggregations.energyDeliveredPercent?.formatted }}</div>
       <div class="value">{{ aggregations.energyDelivered?.delta?.formatted }}</div>
     </div>
   </div>
 
+  <app-percent-bar [produktion]="aggregations.energyProduced?.delta" [self]="aggregations.energySelf" [purchase]="aggregations.energyPurchased?.delta" [delivery]="aggregations.energyDelivered?.delta"></app-percent-bar>
+
 </div>
 
 <router-outlet/>
diff --git a/src/main/angular/src/app/app.component.less b/src/main/angular/src/app/app.component.less
index adf0d31..5df8cd7 100644
--- a/src/main/angular/src/app/app.component.less
+++ b/src/main/angular/src/app/app.component.less
@@ -1,5 +1,7 @@
+@import "../../config.less";
+
 .section {
-  margin-bottom: 1em;
+  margin-bottom: 2em;
 
   .back {
     float: left;
@@ -12,7 +14,6 @@
   .title {
     clear: left;
     font-weight: bold;
-    font-size: 120%;
     text-align: center;
   }
 
@@ -28,7 +29,6 @@
 
       .name {
         float: left;
-        font-weight: bold;
       }
 
       .value {
@@ -39,7 +39,7 @@
         float: right;
         padding-top: 0.5em;
         font-size: 60%;
-        width: 3.5em;
+        width: 4.5em;
         text-align: right;
       }
 
@@ -62,25 +62,25 @@
 }
 
 .consumption {
-  color: orange;
+  color: @consumption;
 }
 
 .purchase {
-  color: orangered;
+  color: @purchase;
 }
 
 .production {
-  color: dodgerblue;
+  color: @production;
 }
 
 .self {
-  color: forestgreen;
+  color: @self;
 }
 
 .delivery {
-  color: magenta;
+  color: @delivery;
 }
 
 .zero {
-  filter: opacity(30%);
+  filter: opacity(20%);
 }
diff --git a/src/main/angular/src/app/app.component.ts b/src/main/angular/src/app/app.component.ts
index 553dbe7..5dcd749 100644
--- a/src/main/angular/src/app/app.component.ts
+++ b/src/main/angular/src/app/app.component.ts
@@ -5,11 +5,11 @@ import {AggregationWrapperDto} from './series/AggregationWrapperDto';
 import {SeriesService} from './series/series.service';
 import {Subscription} from 'rxjs';
 import {Value} from './value/Value';
-import {NgIf} from '@angular/common';
+import {PercentBarComponent} from './percent-bar/percent-bar.component';
 
 @Component({
   selector: 'app-root',
-  imports: [RouterOutlet, NgIf],
+  imports: [RouterOutlet, PercentBarComponent],
   templateUrl: './app.component.html',
   styleUrl: './app.component.less'
 })
@@ -25,7 +25,7 @@ export class AppComponent implements OnInit, OnDestroy {
 
   private readonly subs: Subscription[] = [];
 
-  get powerProduced(): Value | undefined {
+  get powerProduction(): Value | undefined {
     return this.seriesService.powerProduced.series?.lastValue;
   }
 
@@ -42,19 +42,19 @@ export class AppComponent implements OnInit, OnDestroy {
   }
 
   get powerSelf(): Value | undefined {
-    return this.powerProduced?.minus(this.powerDelivery);
+    return this.powerProduction?.minus(this.powerDelivery);
   }
 
   get powerConsumption(): Value | undefined {
-    return this.powerBalance?.plus(this.powerProduced);
+    return this.powerPurchase?.plus(this.powerProduction);
   }
 
   get powerProducedPercent(): Value | undefined {
-    return this.powerProduced?.percent(this.powerConsumption);
+    return this.powerProduction?.percent(this.powerConsumption);
   }
 
   get powerSelfPercent(): Value | undefined {
-    return this.powerSelf?.percent(this.powerProduced);
+    return this.powerSelf?.percent(this.powerProduction);
   }
 
   get powerPurchasePercent(): Value | undefined {
@@ -62,7 +62,7 @@ export class AppComponent implements OnInit, OnDestroy {
   }
 
   get powerDeliveryPercent(): Value | undefined {
-    return this.powerDelivery?.percent(this.powerProduced);
+    return this.powerDelivery?.percent(this.powerProduction);
   }
 
   constructor(
diff --git a/src/main/angular/src/app/percent-bar/percent-bar.component.html b/src/main/angular/src/app/percent-bar/percent-bar.component.html
new file mode 100644
index 0000000..216986a
--- /dev/null
+++ b/src/main/angular/src/app/percent-bar/percent-bar.component.html
@@ -0,0 +1,20 @@
+<div class="bar">
+  <div class="part purchase" *ngIf="barPurchasePercent" [style.width]="barPurchasePercent.value + '%'">
+    <div class="text">
+      {{ _purchase?.formatted }}<br>
+      {{ purchasePercent?.formatted }}
+    </div>
+  </div>
+  <div class="part self" *ngIf="barSelfPercent" [style.width]="barSelfPercent.value + '%'">
+    <div class="text">
+      {{ _self?.formatted }}<br>
+      {{ selfPercent?.formatted }}
+    </div>
+  </div>
+  <div class="part delivery" *ngIf="barDeliveryPercent" [style.width]="barDeliveryPercent.value + '%'">
+    <div class="text">
+      {{ _delivery?.formatted }}<br>
+      {{ deliveryPercent?.formatted }}
+    </div>
+  </div>
+</div>
diff --git a/src/main/angular/src/app/percent-bar/percent-bar.component.less b/src/main/angular/src/app/percent-bar/percent-bar.component.less
new file mode 100644
index 0000000..3733aee
--- /dev/null
+++ b/src/main/angular/src/app/percent-bar/percent-bar.component.less
@@ -0,0 +1,30 @@
+@import "../../../config.less";
+
+.bar {
+  position: relative;
+  color: white;
+
+  .part {
+    float: left;
+    white-space: nowrap;
+    font-size: 40%;
+
+    .text {
+      padding-left: 0.25em;
+    }
+    border-radius: 0.5em;
+  }
+
+  .self {
+    background-color: @selfBack;
+  }
+
+  .purchase {
+    background-color: @purchaseBack;
+  }
+
+  .delivery {
+    background-color: @deliveryBack;
+  }
+
+}
diff --git a/src/main/angular/src/app/percent-bar/percent-bar.component.ts b/src/main/angular/src/app/percent-bar/percent-bar.component.ts
new file mode 100644
index 0000000..4897f38
--- /dev/null
+++ b/src/main/angular/src/app/percent-bar/percent-bar.component.ts
@@ -0,0 +1,78 @@
+import {Component, Input} from '@angular/core';
+import {Value} from '../value/Value';
+import {NgIf} from '@angular/common';
+
+@Component({
+  selector: 'app-percent-bar',
+  imports: [
+    NgIf
+  ],
+  templateUrl: './percent-bar.component.html',
+  styleUrl: './percent-bar.component.less'
+})
+export class PercentBarComponent {
+
+  protected _produktion: Value | undefined;
+
+  @Input()
+  set produktion(produktion: Value | undefined) {
+    this._produktion = produktion;
+    this.update();
+  }
+
+  protected _self: Value | undefined;
+
+  @Input()
+  set self(self: Value | undefined) {
+    this._self = self;
+    this.update();
+  }
+
+  protected _purchase: Value | undefined;
+
+  @Input()
+  set purchase(purchase: Value | undefined) {
+    this._purchase = purchase;
+    this.update();
+  }
+
+  protected _delivery: Value | undefined;
+
+  @Input()
+  set delivery(delivery: Value | undefined) {
+    this._delivery = delivery;
+    this.update();
+  }
+
+  @Input()
+  percent: boolean = false;
+
+  protected consumption: Value | undefined;
+
+  protected barSum: Value | undefined;
+
+  protected selfPercent: Value | undefined;
+
+  protected purchasePercent: Value | undefined;
+
+  protected deliveryPercent: Value | undefined;
+
+  protected barSelfPercent: Value | undefined;
+
+  protected barPurchasePercent: Value | undefined;
+
+  protected barDeliveryPercent: Value | undefined;
+
+  private update() {
+    this.consumption = this._self?.plus(this._purchase);
+    this.selfPercent = this._self?.percent(this.consumption);
+    this.purchasePercent = this._purchase?.percent(this.consumption);
+    this.deliveryPercent = this._delivery?.percent(this._produktion);
+
+    this.barSum = this.consumption?.plus(this._delivery);
+    this.barSelfPercent = this._self?.percent(this.barSum);
+    this.barPurchasePercent = this._purchase?.percent(this.barSum);
+    this.barDeliveryPercent = this._delivery?.percent(this.barSum);
+  }
+
+}
diff --git a/src/main/angular/src/app/series/AggregationWrapperDto.ts b/src/main/angular/src/app/series/AggregationWrapperDto.ts
index 7f3e6ac..d51b119 100644
--- a/src/main/angular/src/app/series/AggregationWrapperDto.ts
+++ b/src/main/angular/src/app/series/AggregationWrapperDto.ts
@@ -48,11 +48,11 @@ export class AggregationWrapperDto {
     this.energySelf = this.energyProduced?.delta.minus(this.energyDelivered?.delta);
   }
 
-  static fromJson(json: any): AggregationWrapperDto {
+  static fromJson(json: any, locale: string): AggregationWrapperDto {
     return new AggregationWrapperDto(
       json['alignment'] as Alignment,
       new Date(json['date']),
-      (json['aggregations'] as any[]).map(a => a.hasOwnProperty('delta') ? MeterAggregate.fromJson(a) : VaryingAggregate.fromJson(a)),
+      (json['aggregations'] as any[]).map(a => a.hasOwnProperty('delta') ? MeterAggregate.fromJson(a, locale) : VaryingAggregate.fromJson(a, locale)),
     );
   }
 
diff --git a/src/main/angular/src/app/series/Series.ts b/src/main/angular/src/app/series/Series.ts
index 6f9937d..0ca700e 100644
--- a/src/main/angular/src/app/series/Series.ts
+++ b/src/main/angular/src/app/series/Series.ts
@@ -15,7 +15,7 @@ export class Series {
     //
   }
 
-  static fromJson(json: any): Series {
+  static fromJson(json: any, locale: string): Series {
     const decimals = validateNumber(json['decimals']);
     const unit = Unit.fromJson(json['unit']);
     return new Series(
@@ -24,7 +24,7 @@ export class Series {
       validateString(json['title']),
       decimals,
       unit,
-      Value.fromJson(json['lastValue'], json['unit'], unit, decimals),
+      Value.fromJson(json['lastValue'], unit, decimals, locale),
     );
   }
 
diff --git a/src/main/angular/src/app/series/meter/MeterAggregate.ts b/src/main/angular/src/app/series/meter/MeterAggregate.ts
index 84f9ff8..1c3d096 100644
--- a/src/main/angular/src/app/series/meter/MeterAggregate.ts
+++ b/src/main/angular/src/app/series/meter/MeterAggregate.ts
@@ -11,11 +11,11 @@ export class MeterAggregate extends Aggregate {
     super(series);
   }
 
-  static fromJson(json: any): MeterAggregate {
-    const series = Series.fromJson(json['series']);
+  static fromJson(json: any, locale: string): MeterAggregate {
+    const series = Series.fromJson(json['series'], locale);
     return new MeterAggregate(
       series,
-      Value.fromJson(json['delta'], series, series.unit, series.decimals),
+      Value.fromJson(json['delta'], series.unit, series.decimals, locale),
     );
   }
 
diff --git a/src/main/angular/src/app/series/series.service.ts b/src/main/angular/src/app/series/series.service.ts
index fb0b555..b6bb422 100644
--- a/src/main/angular/src/app/series/series.service.ts
+++ b/src/main/angular/src/app/series/series.service.ts
@@ -1,4 +1,4 @@
-import {Injectable} from '@angular/core';
+import {Inject, Injectable, LOCALE_ID} from '@angular/core';
 import {ApiService} from '../core/api.service';
 import {Alignment} from './Alignment';
 import {AggregationWrapperDto} from './AggregationWrapperDto';
@@ -34,6 +34,7 @@ export class SeriesService {
   ]
 
   constructor(
+    @Inject(LOCALE_ID) readonly locale: string,
     protected readonly api: ApiService,
   ) {
     //
@@ -57,7 +58,7 @@ export class SeriesService {
     if (this.subs.length !== 0) {
       return;
     }
-    this.subs.push(this.api.subscribe(['Series'], Series.fromJson, series => this.update(series)));
+    this.subs.push(this.api.subscribe(['Series'], j => Series.fromJson(j, this.locale), series => this.update(series)));
     this.subs.push(this.api.subscribeConnection(connected => {
       if (connected) {
         this.all();
@@ -97,7 +98,7 @@ export class SeriesService {
   }
 
   all(next?: Next<Series[]>) {
-    this.api.getList(['Series', 'all'], Series.fromJson, list => {
+    this.api.getList(['Series', 'all'], j => Series.fromJson(j, this.locale), list => {
       list.forEach(item => this.update(item));
       if (next) {
         next(list);
@@ -106,7 +107,7 @@ export class SeriesService {
   }
 
   aggregations(alignment: Alignment, offset: number, next: Next<AggregationWrapperDto>) {
-    this.api.getSingle(['Series', 'agg', 'all', alignment.name, 'offset', offset], AggregationWrapperDto.fromJson, next);
+    this.api.getSingle(['Series', 'agg', 'all', alignment.name, 'offset', offset], j => AggregationWrapperDto.fromJson(j, this.locale), next);
   }
 
 }
diff --git a/src/main/angular/src/app/series/varying/VaryingAggregate.ts b/src/main/angular/src/app/series/varying/VaryingAggregate.ts
index c00164b..e5c7050 100644
--- a/src/main/angular/src/app/series/varying/VaryingAggregate.ts
+++ b/src/main/angular/src/app/series/varying/VaryingAggregate.ts
@@ -12,9 +12,9 @@ export class VaryingAggregate extends Aggregate {
     super(series);
   }
 
-  static fromJson(json: any): VaryingAggregate {
+  static fromJson(json: any, locale: string): VaryingAggregate {
     return new VaryingAggregate(
-      Series.fromJson(json['series']),
+      Series.fromJson(json['series'], locale),
       json['min'] as number,
       json['avg'] as number,
       json['max'] as number,
diff --git a/src/main/angular/src/app/value/Value.ts b/src/main/angular/src/app/value/Value.ts
index c90a189..93a527e 100644
--- a/src/main/angular/src/app/value/Value.ts
+++ b/src/main/angular/src/app/value/Value.ts
@@ -1,25 +1,18 @@
 import {Unit} from "./Unit";
 import {validateNumber} from "../core/validators";
-import {Series} from "../series/Series";
 
 export class Value {
 
-  static readonly EMPTY: Value = new Value(0, Unit._UNKNOWN_, 1);
-
   constructor(
     readonly value: number,
     readonly unit: Unit,
     readonly decimals: number,
-  ) {
+    readonly locale: string) {
     //
   }
 
-  static fromJson(value: any, series: Series, unit: Unit, decimals: number): Value {
-    return new Value(
-      validateNumber(value),
-      unit,
-      decimals,
-    );
+  static fromJson(value: any, unit: Unit, decimals: number, locale: string): Value {
+    return new Value(validateNumber(value), unit, decimals, locale);
   }
 
   get zero(): boolean {
@@ -27,25 +20,25 @@ export class Value {
   }
 
   get formatted(): string {
-    return `${this.value.toFixed(this.decimals)} ${this.unit.unit}`;
+    return `${this.value.toLocaleString(this.locale, {maximumFractionDigits: this.decimals, minimumFractionDigits: this.decimals})} ${this.unit.unit}`;
   }
 
   negate() {
-    return new Value(-this.value, this.unit, this.decimals);
+    return new Value(-this.value, this.unit, this.decimals, this.locale);
   }
 
   plus(other: Value | undefined): Value | undefined {
     if (!other) {
       return undefined;
     }
-    return new Value(this.value + other.value, this.unit, this.decimals);
+    return new Value(this.value + other.value, this.unit, this.decimals, this.locale);
   }
 
   minus(other: Value | undefined): Value | undefined {
     if (!other) {
       return undefined;
     }
-    return new Value(this.value - other.value, this.unit, this.decimals);
+    return new Value(this.value - other.value, this.unit, this.decimals, this.locale);
   }
 
   notNegative(): Value {
@@ -59,14 +52,14 @@ export class Value {
     if (this.value === 0) {
       return this;
     }
-    return new Value(0, this.unit, this.decimals);
+    return new Value(0, this.unit, this.decimals, this.locale);
   }
 
   percent(other: Value | undefined): Value | undefined {
     if (!other || other.value === 0) {
       return undefined;
     }
-    return new Value(this.value / other.value * 100, Unit.PERCENT, 0);
+    return new Value(this.value / other.value * 100, Unit.PERCENT, 0, this.locale);
   }
 
 }
diff --git a/src/main/angular/src/styles.less b/src/main/angular/src/styles.less
index ed16151..20bd6c3 100644
--- a/src/main/angular/src/styles.less
+++ b/src/main/angular/src/styles.less
@@ -1,11 +1,22 @@
+@import "../config.less";
+
 body {
   font-family: sans-serif;
   font-size: 6vw;
   user-select: none;
+  background-color: @background;
+  color: @foreground;
+  margin: 0;
 }
 
-button, input, select {
+button {
+  all: unset;
   font-size: inherit;
+  padding: 0 0.25em;
+  background-color: #002433;
+  color: #008fca;
+  border: unset;
+  border-radius: 10%;
 }
 
 div {