diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d11126c218..57d023d308 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -78,12 +78,21 @@ jobs:
             exit 1
           fi
 
+      #Deployment
       - name: Deploy
         if: github.ref == 'refs/heads/main' || github.ref == 'refs/heads/dev'
+        env:
+          ORG_GRADLE_PROJECT_signingKey: ${{ secrets.MAVENCENTRAL_SIGNINGKEY }}
+          ORG_GRADLE_PROJECT_signingPassword: ${{ secrets.MAVENCENTRAL_SIGNINGPASS }}
+          ORG_GRADLE_PROJECT_user: ${{ secrets.MAVENCENTRAL_USER }}
+          ORG_GRADLE_PROJECT_password: ${{ secrets.MAVENCENTRAL_PASS }}
         run: |
-          ./gradlew publish\
-            -Puser=${{ secrets.MAVENCENTRAL_USER }} \
-            -Ppassword=${{ secrets.MAVENCENTRAL_PASS }} \
-            -Psigning.keyId=${{ secrets.MAVENCENTRAL_SIGNINGKEYID }} \
-            -Psigning.password=${{ secrets.MAVENCENTRAL_SIGNINGPASS }} \
-            -Psigning.secretKeyRingFile=${{ secrets.MAVENCENTRAL_SIGNINGKEY }}
+          if [ "${GITHUB_REF}" == "refs/heads/main" ]; then
+            currentVersion=$(./gradlew -q currentVersion)
+          else
+            currentVersion=$(./gradlew -q devVersion)
+          fi
+          
+          echo "currentVersion=$currentVersion"
+
+          ./gradlew publish -PdeployVersion=$currentVersion
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c5e8f10c65..f8795209c4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -37,6 +37,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Added weatherData HowTo for Copernicus ERA5 data [#967](https://github.com/ie3-institute/simona/issues/967)
 - Add some quote to 'printGoodbye' [#997](https://github.com/ie3-institute/simona/issues/997)
 - Add unapply method for ThermalHouseResults [#934](https://github.com/ie3-institute/simona/issues/934)
+- Implemented GitHub Actions Pipeline [#939](https://github.com/ie3-institute/simona/issues/939)
 - Added `ApparentPower` to differentiate between different power types [#794](https://github.com/ie3-institute/simona/issues/794)
 - Update/enhance config documentation [#1013](https://github.com/ie3-institute/simona/issues/1013)
 - Create `CITATION.cff` [#1035](https://github.com/ie3-institute/simona/issues/1035)
@@ -149,6 +150,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fix initialisation freezing on empty primary data [#981](https://github.com/ie3-institute/simona/issues/981)
 - Shallow fetch in CI [#1041](https://github.com/ie3-institute/simona/issues/1041)
 - Correct wrong use of term "wall clock time" [#727](https://github.com/ie3-institute/simona/issues/727)
+- Fixed Deployment of `simona` to `Maven Central` in new GHA Pipeline [#1029](https://github.com/ie3-institute/simona/issues/1029)
 
 ## [3.0.0] - 2023-08-07
 
diff --git a/build.gradle b/build.gradle
index 54c2bf0b95..bfb0d52427 100644
--- a/build.gradle
+++ b/build.gradle
@@ -54,7 +54,7 @@ apply from: scriptsLocation + 'scoverage.gradle' // scoverage scala code coverag
 apply from: scriptsLocation + 'deploy.gradle'
 apply from: scriptsLocation + 'semVer.gradle'
 apply from: scriptsLocation + 'mavenCentralPublish.gradle'
-apply from: scriptsLocation + 'branchName.gradle'
+apply from: scriptsLocation + 'branchName.gradle' // checks naming scheme of branches
 
 configurations {
   scalaCompilerPlugin
diff --git a/gradle/scripts/branchName.gradle b/gradle/scripts/branchName.gradle
index b1357b16f1..99ba2c5097 100644
--- a/gradle/scripts/branchName.gradle
+++ b/gradle/scripts/branchName.gradle
@@ -18,7 +18,7 @@ tasks.register('checkBranchName') {
     def isValid = patterns.any { pattern -> branchName ==~ pattern }
 
     if (!isValid) {
-      throw new GradleException("Error: Check Branch name format (e.g., ps/#1337-FeatureName).")
+      throw new GradleException("Error: Check Branch name format (e.g., ps/#1337-FeatureName). Current branch name is $branchName.")
     }
 
     println "Branch name is $branchName"
diff --git a/gradle/scripts/mavenCentralPublish.gradle b/gradle/scripts/mavenCentralPublish.gradle
index c006100df7..9003d01c4c 100644
--- a/gradle/scripts/mavenCentralPublish.gradle
+++ b/gradle/scripts/mavenCentralPublish.gradle
@@ -10,17 +10,11 @@ task javadocJar(type: Jar, dependsOn: javadoc) {
   from javadoc.destinationDir
 }
 
-
 if (project.hasProperty('user') && project.hasProperty('password') && project.hasProperty('deployVersion')) {
 
   // snapshot version differs from normal version
   String versionString = project.getProperty('deployVersion')
 
-  signing {
-    required { !versionString.endsWith('SNAPSHOT') }
-    if (required)
-      sign(publishing.publications)
-  }
 
   publishing {
     publications {
@@ -87,9 +81,15 @@ if (project.hasProperty('user') && project.hasProperty('password') && project.ha
         }
       }
     }
+    signing {
+      useInMemoryPgpKeys(
+          findProperty('signingKey'),
+          findProperty('signingPassword')
+          )
+      sign publishing.publications.mavenJava
+    }
   }
 
-
   model {
     tasks.generatePomFileForMavenJavaPublication {
       destination = file("$buildDir/generated-pom.xml")
@@ -98,7 +98,6 @@ if (project.hasProperty('user') && project.hasProperty('password') && project.ha
 }
 
 def removeTestDependenciesFromPom(pom) {
-
   pom.withXml {
     def root = asNode()
     // eliminate test-scoped dependencies (no need in maven central POMs)
diff --git a/gradle/scripts/semVer.gradle b/gradle/scripts/semVer.gradle
index ec680a487b..c330089323 100644
--- a/gradle/scripts/semVer.gradle
+++ b/gradle/scripts/semVer.gradle
@@ -1,13 +1,13 @@
 // tasks for semantic versioning using semver-gradle https://github.com/ethauvin/semver-gradle
 
-task currentVersion {
-  doFirst{
+tasks.register('currentVersion') {
+  doFirst {
     println semver.semver
   }
 }
 
-task devVersion {
-  doFirst{
+tasks.register('devVersion') {
+  doFirst {
     println "${semver.major}.${semver.minor}-SNAPSHOT"
   }
 }