diff --git a/src/main/java/de/ph87/data/common/DateTimeHelpers.java b/src/main/java/de/ph87/data/common/DateTimeHelpers.java
new file mode 100644
index 0000000..639b42c
--- /dev/null
+++ b/src/main/java/de/ph87/data/common/DateTimeHelpers.java
@@ -0,0 +1,16 @@
+package de.ph87.data.common;
+
+import lombok.NonNull;
+
+import java.time.Instant;
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
+
+public class DateTimeHelpers {
+
+  @NonNull
+  public static ZonedDateTime ZDT(final long epochSeconds) {
+    return ZonedDateTime.ofInstant(Instant.ofEpochSecond(epochSeconds), ZoneId.systemDefault());
+  }
+
+}
diff --git a/src/main/java/de/ph87/data/demo/DemoService.java b/src/main/java/de/ph87/data/demo/DemoService.java
index 13be757..288ae69 100644
--- a/src/main/java/de/ph87/data/demo/DemoService.java
+++ b/src/main/java/de/ph87/data/demo/DemoService.java
@@ -11,9 +11,9 @@ import org.springframework.context.event.EventListener;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
-import static de.ph87.data.grid.GridReceiver.GRID_DELIVERY_SERIES_NAME;
-import static de.ph87.data.grid.GridReceiver.GRID_PURCHASE_SERIES_NAME;
-import static de.ph87.data.photovoltaic.PhotovoltaicMqttReceiver.PHOTOVOLTAIC_ENERGY_SERIES_NAME;
+import static de.ph87.data.electricity.grid.GridReceiver.GRID_DELIVERY_SERIES_NAME;
+import static de.ph87.data.electricity.grid.GridReceiver.GRID_PURCHASE_SERIES_NAME;
+import static de.ph87.data.electricity.photovoltaic.PhotovoltaicReceiver.PHOTOVOLTAIC_ENERGY_SERIES_NAME;
 
 @Slf4j
 @Service
diff --git a/src/main/java/de/ph87/data/electricity/ElectricityHelpers.java b/src/main/java/de/ph87/data/electricity/ElectricityHelpers.java
new file mode 100644
index 0000000..2b5d6c2
--- /dev/null
+++ b/src/main/java/de/ph87/data/electricity/ElectricityHelpers.java
@@ -0,0 +1,28 @@
+package de.ph87.data.electricity;
+
+public class ElectricityHelpers {
+
+  public static double energyToKWh(final double energy, final String energyUnit) {
+    return switch (energyUnit) {
+      case "mWh" -> energy / 1000000;
+      case "Wh" -> energy / 1000;
+      case "kWh" -> energy;
+      case "MWh" -> energy * 1000;
+      case "GWh" -> energy * 1000000;
+      default -> throw new RuntimeException();
+    };
+  }
+
+  @SuppressWarnings("unused")
+  public static double powerToW(final double power, final String powerUnit) {
+    return switch (powerUnit) {
+      case "mW" -> power / 1000;
+      case "W" -> power;
+      case "kW" -> power * 1000;
+      case "MW" -> power * 1000000;
+      case "GW" -> power * 1000000000;
+      default -> throw new RuntimeException();
+    };
+  }
+
+}
diff --git a/src/main/java/de/ph87/data/grid/GridInbound.java b/src/main/java/de/ph87/data/electricity/grid/GridInbound.java
similarity index 84%
rename from src/main/java/de/ph87/data/grid/GridInbound.java
rename to src/main/java/de/ph87/data/electricity/grid/GridInbound.java
index 4d23366..d25e88e 100644
--- a/src/main/java/de/ph87/data/grid/GridInbound.java
+++ b/src/main/java/de/ph87/data/electricity/grid/GridInbound.java
@@ -1,11 +1,11 @@
-package de.ph87.data.grid;
+package de.ph87.data.electricity.grid;
 
 import lombok.Getter;
 import lombok.ToString;
 
 import java.time.ZonedDateTime;
 
-import static de.ph87.data.series.period.consumption.ConsumptionController.ZDT;
+import static de.ph87.data.common.DateTimeHelpers.ZDT;
 
 @Getter
 @ToString
diff --git a/src/main/java/de/ph87/data/grid/GridReceiver.java b/src/main/java/de/ph87/data/electricity/grid/GridReceiver.java
similarity index 56%
rename from src/main/java/de/ph87/data/grid/GridReceiver.java
rename to src/main/java/de/ph87/data/electricity/grid/GridReceiver.java
index 26f2d04..02a697a 100644
--- a/src/main/java/de/ph87/data/grid/GridReceiver.java
+++ b/src/main/java/de/ph87/data/electricity/grid/GridReceiver.java
@@ -1,9 +1,9 @@
-package de.ph87.data.grid;
+package de.ph87.data.electricity.grid;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import de.ph87.data.mqtt.MqttEvent;
-import de.ph87.data.series.measure.MeasureEvent;
+import de.ph87.data.series.consumption.ConsumptionEvent;
 import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -11,6 +11,8 @@ import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.context.event.EventListener;
 import org.springframework.stereotype.Service;
 
+import static de.ph87.data.electricity.ElectricityHelpers.energyToKWh;
+
 @Slf4j
 @Service
 @RequiredArgsConstructor
@@ -39,33 +41,10 @@ public class GridReceiver {
     }
 
     final double purchaseKWh = energyToKWh(inbound.purchaseWh, "Wh");
-    applicationEventPublisher.publishEvent(new MeasureEvent(GRID_PURCHASE_SERIES_NAME, inbound.meter, inbound.date, purchaseKWh));
+    applicationEventPublisher.publishEvent(new ConsumptionEvent(GRID_PURCHASE_SERIES_NAME, inbound.meter, inbound.date, purchaseKWh));
 
     final double deliveryKWh = energyToKWh(inbound.deliveryWh, "Wh");
-    applicationEventPublisher.publishEvent(new MeasureEvent(GRID_DELIVERY_SERIES_NAME, inbound.meter, inbound.date, deliveryKWh));
-  }
-
-  public static double energyToKWh(final double energy, final String energyUnit) {
-    return switch (energyUnit) {
-      case "mWh" -> energy / 1000000;
-      case "Wh" -> energy / 1000;
-      case "kWh" -> energy;
-      case "MWh" -> energy * 1000;
-      case "GWh" -> energy * 1000000;
-      default -> throw new RuntimeException();
-    };
-  }
-
-  @SuppressWarnings("unused")
-  public static double powerToW(final double power, final String powerUnit) {
-    return switch (powerUnit) {
-      case "mW" -> power / 1000;
-      case "W" -> power;
-      case "kW" -> power * 1000;
-      case "MW" -> power * 1000000;
-      case "GW" -> power * 1000000000;
-      default -> throw new RuntimeException();
-    };
+    applicationEventPublisher.publishEvent(new ConsumptionEvent(GRID_DELIVERY_SERIES_NAME, inbound.meter, inbound.date, deliveryKWh));
   }
 
 }
diff --git a/src/main/java/de/ph87/data/photovoltaic/PhotovoltaicMqttReceiver.java b/src/main/java/de/ph87/data/electricity/photovoltaic/PhotovoltaicReceiver.java
similarity index 58%
rename from src/main/java/de/ph87/data/photovoltaic/PhotovoltaicMqttReceiver.java
rename to src/main/java/de/ph87/data/electricity/photovoltaic/PhotovoltaicReceiver.java
index 6eabf35..6e25f09 100644
--- a/src/main/java/de/ph87/data/photovoltaic/PhotovoltaicMqttReceiver.java
+++ b/src/main/java/de/ph87/data/electricity/photovoltaic/PhotovoltaicReceiver.java
@@ -1,7 +1,7 @@
-package de.ph87.data.photovoltaic;
+package de.ph87.data.electricity.photovoltaic;
 
 import de.ph87.data.mqtt.MqttEvent;
-import de.ph87.data.series.measure.MeasureEvent;
+import de.ph87.data.series.consumption.ConsumptionEvent;
 import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -13,12 +13,13 @@ import java.time.ZonedDateTime;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-import static de.ph87.data.series.period.consumption.ConsumptionController.ZDT;
+import static de.ph87.data.common.DateTimeHelpers.ZDT;
+import static de.ph87.data.electricity.ElectricityHelpers.energyToKWh;
 
 @Slf4j
 @Service
 @RequiredArgsConstructor
-public class PhotovoltaicMqttReceiver {
+public class PhotovoltaicReceiver {
 
   public static final String PHOTOVOLTAIC_ENERGY_SERIES_NAME = "photovoltaic.energyKWh";
 
@@ -42,30 +43,7 @@ public class PhotovoltaicMqttReceiver {
     final double energy = Double.parseDouble(matcher.group("energy"));
     final String energyUnit = matcher.group("energyUnit");
     final double energyKWh = energyToKWh(energy, energyUnit);
-    applicationEventPublisher.publishEvent(new MeasureEvent(PHOTOVOLTAIC_ENERGY_SERIES_NAME, serial, date, energyKWh));
-  }
-
-  public static double energyToKWh(final double energy, final String energyUnit) {
-    return switch (energyUnit) {
-      case "mWh" -> energy / 1000000;
-      case "Wh" -> energy / 1000;
-      case "kWh" -> energy;
-      case "MWh" -> energy * 1000;
-      case "GWh" -> energy * 1000000;
-      default -> throw new RuntimeException();
-    };
-  }
-
-  @SuppressWarnings("unused")
-  public static double powerToW(final double power, final String powerUnit) {
-    return switch (powerUnit) {
-      case "mW" -> power / 1000;
-      case "W" -> power;
-      case "kW" -> power * 1000;
-      case "MW" -> power * 1000000;
-      case "GW" -> power * 1000000000;
-      default -> throw new RuntimeException();
-    };
+    applicationEventPublisher.publishEvent(new ConsumptionEvent(PHOTOVOLTAIC_ENERGY_SERIES_NAME, serial, date, energyKWh));
   }
 
 }
diff --git a/src/main/java/de/ph87/data/series/Series.java b/src/main/java/de/ph87/data/series/Series.java
index 6fe1695..6b7e4de 100644
--- a/src/main/java/de/ph87/data/series/Series.java
+++ b/src/main/java/de/ph87/data/series/Series.java
@@ -1,6 +1,6 @@
 package de.ph87.data.series;
 
-import de.ph87.data.series.period.Period;
+import de.ph87.data.series.consumption.period.Period;
 import jakarta.annotation.Nullable;
 import jakarta.persistence.*;
 import lombok.*;
diff --git a/src/main/java/de/ph87/data/series/SeriesService.java b/src/main/java/de/ph87/data/series/SeriesService.java
index 56ecaf1..1b73dca 100644
--- a/src/main/java/de/ph87/data/series/SeriesService.java
+++ b/src/main/java/de/ph87/data/series/SeriesService.java
@@ -1,8 +1,8 @@
 package de.ph87.data.series;
 
-import de.ph87.data.series.measure.MeasureEvent;
-import de.ph87.data.series.measure.MeasureEventTooOld;
-import de.ph87.data.series.period.PeriodService;
+import de.ph87.data.series.consumption.ConsumptionEvent;
+import de.ph87.data.series.consumption.ConsumptionEventTooOld;
+import de.ph87.data.series.consumption.period.PeriodService;
 import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -22,9 +22,9 @@ public class SeriesService {
 
   private final PeriodService periodService;
 
-  @EventListener(MeasureEvent.class)
-  public void onMeasureEvent(@NonNull final MeasureEvent event) {
-    log.debug("Handling MeasureEvent: {}", event);
+  @EventListener(ConsumptionEvent.class)
+  public void onConsumptionEvent(@NonNull final ConsumptionEvent event) {
+    log.debug("Handling ConsumptionEvent: {}", event);
     final Optional<Series> seriesOptional = seriesRepository.findByNameOrAliasesContains(event.getName(), event.getName());
     if (seriesOptional.isEmpty()) {
       log.warn("No series found with name or alias: \"{}\"", event.getName());
@@ -34,8 +34,8 @@ public class SeriesService {
     final Series series = seriesOptional.get();
     log.debug("Series found: {}", series);
     try {
-      periodService.onMeasureEvent(series, event);
-    } catch (MeasureEventTooOld e) {
+      periodService.onConsumptionEvent(series, event);
+    } catch (ConsumptionEventTooOld e) {
       log.warn(e.toString());
     }
   }
diff --git a/src/main/java/de/ph87/data/series/period/consumption/Consumption.java b/src/main/java/de/ph87/data/series/consumption/Consumption.java
similarity index 88%
rename from src/main/java/de/ph87/data/series/period/consumption/Consumption.java
rename to src/main/java/de/ph87/data/series/consumption/Consumption.java
index 4142a1f..5e29507 100644
--- a/src/main/java/de/ph87/data/series/period/consumption/Consumption.java
+++ b/src/main/java/de/ph87/data/series/consumption/Consumption.java
@@ -1,14 +1,14 @@
-package de.ph87.data.series.period.consumption;
+package de.ph87.data.series.consumption;
 
-import de.ph87.data.series.period.Period;
-import de.ph87.data.series.period.consumption.unit.Unit;
+import de.ph87.data.series.consumption.period.Period;
+import de.ph87.data.series.consumption.unit.Unit;
 import jakarta.persistence.*;
 import lombok.*;
 
 import java.io.Serializable;
 import java.time.ZonedDateTime;
 
-import static de.ph87.data.series.period.consumption.slice.SliceService.DL;
+import static de.ph87.data.series.consumption.slice.SliceService.DL;
 
 @Entity
 @Getter
diff --git a/src/main/java/de/ph87/data/series/period/consumption/ConsumptionController.java b/src/main/java/de/ph87/data/series/consumption/ConsumptionController.java
similarity index 83%
rename from src/main/java/de/ph87/data/series/period/consumption/ConsumptionController.java
rename to src/main/java/de/ph87/data/series/consumption/ConsumptionController.java
index 9f5ddd9..a95e497 100644
--- a/src/main/java/de/ph87/data/series/period/consumption/ConsumptionController.java
+++ b/src/main/java/de/ph87/data/series/consumption/ConsumptionController.java
@@ -1,8 +1,9 @@
-package de.ph87.data.series.period.consumption;
+package de.ph87.data.series.consumption;
 
-import de.ph87.data.series.period.consumption.slice.Slice;
-import de.ph87.data.series.period.consumption.slice.SliceService;
-import de.ph87.data.series.period.consumption.unit.Unit;
+import de.ph87.data.common.DateTimeHelpers;
+import de.ph87.data.series.consumption.slice.Slice;
+import de.ph87.data.series.consumption.slice.SliceService;
+import de.ph87.data.series.consumption.unit.Unit;
 import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -10,8 +11,6 @@ import org.springframework.http.HttpStatus;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.server.ResponseStatusException;
 
-import java.time.Instant;
-import java.time.ZoneId;
 import java.time.ZonedDateTime;
 import java.util.ArrayList;
 import java.util.List;
@@ -53,7 +52,7 @@ public class ConsumptionController {
   @NonNull
   @GetMapping("{seriesId}/{unitName}/between/{beginEpochSeconds}/{endEpochSeconds}")
   public List<List<Number>> between(@PathVariable final long seriesId, @PathVariable final String unitName, @PathVariable final long beginEpochSeconds, @PathVariable final long endEpochSeconds) {
-    return between(seriesId, Unit.valueOf(unitName), ZDT(beginEpochSeconds), ZDT(endEpochSeconds));
+    return between(seriesId, Unit.valueOf(unitName), DateTimeHelpers.ZDT(beginEpochSeconds), DateTimeHelpers.ZDT(endEpochSeconds));
   }
 
   @NonNull
@@ -78,9 +77,4 @@ public class ConsumptionController {
     return numbers;
   }
 
-  @NonNull
-  public static ZonedDateTime ZDT(final long epochSeconds) {
-    return ZonedDateTime.ofInstant(Instant.ofEpochSecond(epochSeconds), ZoneId.systemDefault());
-  }
-
 }
diff --git a/src/main/java/de/ph87/data/series/consumption/ConsumptionEvent.java b/src/main/java/de/ph87/data/series/consumption/ConsumptionEvent.java
new file mode 100644
index 0000000..7932654
--- /dev/null
+++ b/src/main/java/de/ph87/data/series/consumption/ConsumptionEvent.java
@@ -0,0 +1,26 @@
+package de.ph87.data.series.consumption;
+
+import lombok.Getter;
+import lombok.NonNull;
+import lombok.RequiredArgsConstructor;
+import lombok.ToString;
+
+import java.time.ZonedDateTime;
+
+@Getter
+@ToString
+@RequiredArgsConstructor
+public class ConsumptionEvent {
+
+  @NonNull
+  private final String name;
+
+  @NonNull
+  private final String periodName;
+
+  @NonNull
+  private final ZonedDateTime date;
+
+  private final double value;
+
+}
diff --git a/src/main/java/de/ph87/data/series/consumption/ConsumptionEventTooOld.java b/src/main/java/de/ph87/data/series/consumption/ConsumptionEventTooOld.java
new file mode 100644
index 0000000..d6364e3
--- /dev/null
+++ b/src/main/java/de/ph87/data/series/consumption/ConsumptionEventTooOld.java
@@ -0,0 +1,12 @@
+package de.ph87.data.series.consumption;
+
+import de.ph87.data.series.consumption.period.Period;
+import lombok.NonNull;
+
+public class ConsumptionEventTooOld extends Exception {
+
+  public ConsumptionEventTooOld(@NonNull final Period period, @NonNull final ConsumptionEvent event) {
+    super("Date of received Event older than last stored one: event=%s, period=%s".formatted(event, period));
+  }
+
+}
diff --git a/src/main/java/de/ph87/data/series/period/consumption/ConsumptionRepository.java b/src/main/java/de/ph87/data/series/consumption/ConsumptionRepository.java
similarity index 80%
rename from src/main/java/de/ph87/data/series/period/consumption/ConsumptionRepository.java
rename to src/main/java/de/ph87/data/series/consumption/ConsumptionRepository.java
index 02168d9..4b031de 100644
--- a/src/main/java/de/ph87/data/series/period/consumption/ConsumptionRepository.java
+++ b/src/main/java/de/ph87/data/series/consumption/ConsumptionRepository.java
@@ -1,8 +1,7 @@
-package de.ph87.data.series.period.consumption;
+package de.ph87.data.series.consumption;
 
-import de.ph87.data.series.Series;
-import de.ph87.data.series.period.Period;
-import de.ph87.data.series.period.consumption.unit.Unit;
+import de.ph87.data.series.consumption.period.Period;
+import de.ph87.data.series.consumption.unit.Unit;
 import lombok.NonNull;
 import org.springframework.data.repository.CrudRepository;
 
@@ -20,6 +19,4 @@ public interface ConsumptionRepository extends CrudRepository<Consumption, Consu
 
   List<Consumption> findAllByIdPeriodAndIdUnitAndIdAlignedGreaterThanEqualAndIdAlignedLessThanEqualOrderByIdAlignedAsc(@NonNull Period period, @NonNull Unit unit, @NonNull ZonedDateTime begin, @NonNull ZonedDateTime end);
 
-  void deleteAllByIdPeriodSeries(Series oil);
-
 }
diff --git a/src/main/java/de/ph87/data/series/period/consumption/ConsumptionService.java b/src/main/java/de/ph87/data/series/consumption/ConsumptionService.java
similarity index 80%
rename from src/main/java/de/ph87/data/series/period/consumption/ConsumptionService.java
rename to src/main/java/de/ph87/data/series/consumption/ConsumptionService.java
index b65da1c..21511b6 100644
--- a/src/main/java/de/ph87/data/series/period/consumption/ConsumptionService.java
+++ b/src/main/java/de/ph87/data/series/consumption/ConsumptionService.java
@@ -1,8 +1,7 @@
-package de.ph87.data.series.period.consumption;
+package de.ph87.data.series.consumption;
 
-import de.ph87.data.series.measure.MeasureEvent;
-import de.ph87.data.series.period.Period;
-import de.ph87.data.series.period.consumption.unit.Unit;
+import de.ph87.data.series.consumption.period.Period;
+import de.ph87.data.series.consumption.unit.Unit;
 import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -20,7 +19,7 @@ public class ConsumptionService {
 
   private final ConsumptionRepository consumptionRepository;
 
-  public void onMeasureEvent(@NonNull final Period period, @NonNull final MeasureEvent event) {
+  public void onConsumptionEvent(@NonNull final Period period, @NonNull final ConsumptionEvent event) {
     for (final Unit unit : Unit.values()) {
       final ZonedDateTime aligned = unit.align(event.getDate());
       final Optional<Consumption> existingOptional = consumptionRepository.findByIdPeriodAndIdUnitAndIdAligned(period, unit, aligned);
diff --git a/src/main/java/de/ph87/data/series/period/Period.java b/src/main/java/de/ph87/data/series/consumption/period/Period.java
similarity index 83%
rename from src/main/java/de/ph87/data/series/period/Period.java
rename to src/main/java/de/ph87/data/series/consumption/period/Period.java
index 34fa386..5211e39 100644
--- a/src/main/java/de/ph87/data/series/period/Period.java
+++ b/src/main/java/de/ph87/data/series/consumption/period/Period.java
@@ -1,7 +1,7 @@
-package de.ph87.data.series.period;
+package de.ph87.data.series.consumption.period;
 
 import de.ph87.data.series.Series;
-import de.ph87.data.series.measure.MeasureEvent;
+import de.ph87.data.series.consumption.ConsumptionEvent;
 import jakarta.persistence.*;
 import lombok.*;
 
@@ -47,7 +47,7 @@ public class Period {
   @Column(nullable = false)
   private double lastValue;
 
-  public Period(@NonNull final Series series, @NonNull final MeasureEvent event) {
+  public Period(@NonNull final Series series, @NonNull final ConsumptionEvent event) {
     this.series = series;
     this.name = event.getPeriodName();
     this.firstDate = event.getDate();
diff --git a/src/main/java/de/ph87/data/series/period/PeriodRepository.java b/src/main/java/de/ph87/data/series/consumption/period/PeriodRepository.java
similarity index 77%
rename from src/main/java/de/ph87/data/series/period/PeriodRepository.java
rename to src/main/java/de/ph87/data/series/consumption/period/PeriodRepository.java
index ccb8d20..4563ef4 100644
--- a/src/main/java/de/ph87/data/series/period/PeriodRepository.java
+++ b/src/main/java/de/ph87/data/series/consumption/period/PeriodRepository.java
@@ -1,6 +1,5 @@
-package de.ph87.data.series.period;
+package de.ph87.data.series.consumption.period;
 
-import de.ph87.data.series.Series;
 import lombok.NonNull;
 import org.springframework.data.repository.CrudRepository;
 
@@ -11,6 +10,4 @@ public interface PeriodRepository extends CrudRepository<Period, Long> {
 
   List<Period> findAllBySeriesIdAndLastDateGreaterThanAndFirstDateLessThan(long seriesId, @NonNull ZonedDateTime wantedEnd, @NonNull ZonedDateTime wantedBegin);
 
-  void deleteAllBySeries(Series oil);
-
 }
diff --git a/src/main/java/de/ph87/data/series/period/PeriodService.java b/src/main/java/de/ph87/data/series/consumption/period/PeriodService.java
similarity index 80%
rename from src/main/java/de/ph87/data/series/period/PeriodService.java
rename to src/main/java/de/ph87/data/series/consumption/period/PeriodService.java
index 4d0c8c1..1afeacb 100644
--- a/src/main/java/de/ph87/data/series/period/PeriodService.java
+++ b/src/main/java/de/ph87/data/series/consumption/period/PeriodService.java
@@ -1,10 +1,10 @@
-package de.ph87.data.series.period;
+package de.ph87.data.series.consumption.period;
 
 import de.ph87.data.series.Series;
 import de.ph87.data.series.SeriesMode;
-import de.ph87.data.series.measure.MeasureEvent;
-import de.ph87.data.series.measure.MeasureEventTooOld;
-import de.ph87.data.series.period.consumption.ConsumptionService;
+import de.ph87.data.series.consumption.ConsumptionEvent;
+import de.ph87.data.series.consumption.ConsumptionEventTooOld;
+import de.ph87.data.series.consumption.ConsumptionService;
 import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -21,19 +21,19 @@ public class PeriodService {
 
   private final ConsumptionService consumptionService;
 
-  public void onMeasureEvent(@NonNull final Series series, @NonNull final MeasureEvent event) throws MeasureEventTooOld {
+  public void onConsumptionEvent(@NonNull final Series series, @NonNull final ConsumptionEvent event) throws ConsumptionEventTooOld {
     final Period period = getOrCreatePeriod(series, event);
     period.setLastDate(event.getDate());
     period.setLastValue(event.getValue());
-    consumptionService.onMeasureEvent(period, event);
+    consumptionService.onConsumptionEvent(period, event);
   }
 
   @NonNull
-  private Period getOrCreatePeriod(@NonNull final Series series, @NonNull final MeasureEvent event) throws MeasureEventTooOld {
+  private Period getOrCreatePeriod(@NonNull final Series series, @NonNull final ConsumptionEvent event) throws ConsumptionEventTooOld {
     if (series.getPeriod() != null) {
       log.debug("Last Period exists: {}", series.getPeriod());
       if (isEventTooOld(series.getPeriod(), event)) {
-        throw new MeasureEventTooOld(series.getPeriod(), event);
+        throw new ConsumptionEventTooOld(series.getPeriod(), event);
       }
       if (isPeriodValid(series.getPeriod(), event)) {
         log.debug("Last Period still VALID.");
@@ -49,11 +49,11 @@ public class PeriodService {
     return newPeriod;
   }
 
-  private static boolean isEventTooOld(@NonNull final Period period, @NonNull final MeasureEvent event) {
+  private static boolean isEventTooOld(@NonNull final Period period, @NonNull final ConsumptionEvent event) {
     return !period.getLastDate().isBefore(event.getDate());
   }
 
-  private boolean isPeriodValid(@NonNull final Period period, @NonNull final MeasureEvent event) {
+  private boolean isPeriodValid(@NonNull final Period period, @NonNull final ConsumptionEvent event) {
     if (!period.getName().equals(event.getPeriodName())) {
       log.debug("Period name changed: old={}, new={}", period.getName(), event.getPeriodName());
       return false;
diff --git a/src/main/java/de/ph87/data/series/period/consumption/slice/Slice.java b/src/main/java/de/ph87/data/series/consumption/slice/Slice.java
similarity index 91%
rename from src/main/java/de/ph87/data/series/period/consumption/slice/Slice.java
rename to src/main/java/de/ph87/data/series/consumption/slice/Slice.java
index b97edbb..7785a3f 100644
--- a/src/main/java/de/ph87/data/series/period/consumption/slice/Slice.java
+++ b/src/main/java/de/ph87/data/series/consumption/slice/Slice.java
@@ -1,7 +1,7 @@
-package de.ph87.data.series.period.consumption.slice;
+package de.ph87.data.series.consumption.slice;
 
-import de.ph87.data.series.period.consumption.Consumption;
-import de.ph87.data.series.period.consumption.unit.Unit;
+import de.ph87.data.series.consumption.Consumption;
+import de.ph87.data.series.consumption.unit.Unit;
 import lombok.Getter;
 import lombok.NonNull;
 import lombok.Setter;
diff --git a/src/main/java/de/ph87/data/series/period/consumption/slice/SliceService.java b/src/main/java/de/ph87/data/series/consumption/slice/SliceService.java
similarity index 95%
rename from src/main/java/de/ph87/data/series/period/consumption/slice/SliceService.java
rename to src/main/java/de/ph87/data/series/consumption/slice/SliceService.java
index b99c516..3b2e953 100644
--- a/src/main/java/de/ph87/data/series/period/consumption/slice/SliceService.java
+++ b/src/main/java/de/ph87/data/series/consumption/slice/SliceService.java
@@ -1,10 +1,10 @@
-package de.ph87.data.series.period.consumption.slice;
+package de.ph87.data.series.consumption.slice;
 
-import de.ph87.data.series.period.Period;
-import de.ph87.data.series.period.PeriodRepository;
-import de.ph87.data.series.period.consumption.Consumption;
-import de.ph87.data.series.period.consumption.ConsumptionRepository;
-import de.ph87.data.series.period.consumption.unit.Unit;
+import de.ph87.data.series.consumption.Consumption;
+import de.ph87.data.series.consumption.ConsumptionRepository;
+import de.ph87.data.series.consumption.period.Period;
+import de.ph87.data.series.consumption.period.PeriodRepository;
+import de.ph87.data.series.consumption.unit.Unit;
 import jakarta.annotation.Nullable;
 import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
diff --git a/src/main/java/de/ph87/data/series/period/consumption/unit/Unit.java b/src/main/java/de/ph87/data/series/consumption/unit/Unit.java
similarity index 97%
rename from src/main/java/de/ph87/data/series/period/consumption/unit/Unit.java
rename to src/main/java/de/ph87/data/series/consumption/unit/Unit.java
index b0340b0..6c29898 100644
--- a/src/main/java/de/ph87/data/series/period/consumption/unit/Unit.java
+++ b/src/main/java/de/ph87/data/series/consumption/unit/Unit.java
@@ -1,4 +1,4 @@
-package de.ph87.data.series.period.consumption.unit;
+package de.ph87.data.series.consumption.unit;
 
 import lombok.NonNull;
 
diff --git a/src/main/java/de/ph87/data/series/period/consumption/unit/UnitJpaConverter.java b/src/main/java/de/ph87/data/series/consumption/unit/UnitJpaConverter.java
similarity index 91%
rename from src/main/java/de/ph87/data/series/period/consumption/unit/UnitJpaConverter.java
rename to src/main/java/de/ph87/data/series/consumption/unit/UnitJpaConverter.java
index 78dbfc0..48a9d20 100644
--- a/src/main/java/de/ph87/data/series/period/consumption/unit/UnitJpaConverter.java
+++ b/src/main/java/de/ph87/data/series/consumption/unit/UnitJpaConverter.java
@@ -1,4 +1,4 @@
-package de.ph87.data.series.period.consumption.unit;
+package de.ph87.data.series.consumption.unit;
 
 import jakarta.persistence.AttributeConverter;
 import jakarta.persistence.Converter;
diff --git a/src/main/java/de/ph87/data/series/measure/MeasureEvent.java b/src/main/java/de/ph87/data/series/measure/MeasureEvent.java
index a4aa0e4..3d1edad 100644
--- a/src/main/java/de/ph87/data/series/measure/MeasureEvent.java
+++ b/src/main/java/de/ph87/data/series/measure/MeasureEvent.java
@@ -15,9 +15,6 @@ public class MeasureEvent {
   @NonNull
   private final String name;
 
-  @NonNull
-  private final String periodName;
-
   @NonNull
   private final ZonedDateTime date;