diff --git a/CHANGELOG.md b/CHANGELOG.md
index ee954f77..0c6e14e5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - Added Bao and Staudt to the list of reviewers [#216](https://github.com/ie3-institute/simonaAPI/issues/216)
 - Documentation for this API [#230](https://github.com/ie3-institute/simonaAPI/issues/230)
+- Added cosPhiRated to `EvModel` [#259](https://github.com/ie3-institute/simonaAPI/issues/259)
 
 #### Changed
 - Updated PSDM to 6.0.0
diff --git a/src/main/java/edu/ie3/simona/api/data/ev/model/EvModel.java b/src/main/java/edu/ie3/simona/api/data/ev/model/EvModel.java
index 2ea3082d..ac2a056b 100644
--- a/src/main/java/edu/ie3/simona/api/data/ev/model/EvModel.java
+++ b/src/main/java/edu/ie3/simona/api/data/ev/model/EvModel.java
@@ -23,15 +23,20 @@ public interface EvModel {
   String getId();
 
   /**
-   * @return the maximum AC charging power of this ev (as active power)
+   * @return the maximum AC charging power of this ev
    */
-  ComparableQuantity<Power> getPRatedAC();
+  ComparableQuantity<Power> getSRatedAC();
 
   /**
    * @return the maximum DC charging power of this ev (as active power)
    */
   ComparableQuantity<Power> getPRatedDC();
 
+  /**
+   * @return power factor of this ev
+   */
+  Double getCosPhiRated();
+
   /**
    * @return the storage capacity of this ev's battery
    */