diff --git a/src/main/java/com/sheepit/client/Client.java b/src/main/java/com/sheepit/client/Client.java
index ef4c8ac..3410e00 100644
--- a/src/main/java/com/sheepit/client/Client.java
+++ b/src/main/java/com/sheepit/client/Client.java
@@ -1089,6 +1089,9 @@ import okhttp3.HttpUrl;
 	protected Error.Type confirmJob(Job ajob, int checkpoint) {
 		String url_real = String.format(LOCALE, "%s&rendertime=%d&memoryused=%s", ajob.getValidationUrl(), ajob.getProcessRender().getRenderDuration(),
 				ajob.getProcessRender().getPeakMemoryUsed());
+		if (ajob.getSpeedSamplesRendered() > 0.0) {
+			url_real +=  String.format(LOCALE, "&speedsamples=%s", ajob.getSpeedSamplesRendered());
+		}
 		this.log.debug(checkpoint, "Client::confirmeJob url " + url_real);
 		this.log.debug(checkpoint, "path frame " + ajob.getOutputImagePath());
 		
diff --git a/src/main/java/com/sheepit/client/Job.java b/src/main/java/com/sheepit/client/Job.java
index 87a87b3..21bd569 100644
--- a/src/main/java/com/sheepit/client/Job.java
+++ b/src/main/java/com/sheepit/client/Job.java
@@ -24,7 +24,6 @@ import com.sheepit.client.Error.Type;
 import com.sheepit.client.os.OS;
 import lombok.Data;
 import lombok.Getter;
-import org.simpleframework.xml.util.Match;
 
 import java.io.BufferedReader;
 import java.io.File;
@@ -78,6 +77,7 @@ import java.util.regex.Pattern;
 	private String blenderShortVersion;
 	private String blenderLongVersion;
 	private boolean synchronousUpload;
+	private float speedSamplesRendered; // only used for powerdetection project
 	private RenderProcess render;
 	private boolean askForRendererKill;
 	private boolean userBlockJob;
@@ -113,6 +113,7 @@ import java.util.regex.Pattern;
 		render = new RenderProcess(log_);
 		blenderShortVersion = null;
 		blenderLongVersion = null;
+		speedSamplesRendered = 0;
 	}
 	
 	public void block() {
@@ -398,6 +399,7 @@ import java.util.regex.Pattern;
 						return Error.Type.RENDERER_OUT_OF_MEMORY;
 					}
 					
+					updateSpeedSamplesRendered(line, progress);
 					updateRenderingStatus(line, progress);
 					Type error = detectError(line);
 					if (error != Error.Type.OK) {
@@ -600,6 +602,24 @@ import java.util.regex.Pattern;
 		return newProgress;
 	}
 	
+	private void updateSpeedSamplesRendered(String line, int progress) {
+		// Looking for "Rendered 1281 samples in 66.319402 seconds"
+		Pattern pattern = Pattern.compile("^Rendered (\\d+) samples in ([\\d.]+) seconds$");
+		Matcher matcher = pattern.matcher(line);
+		
+		if (matcher.find()) {
+			int amount = Integer.parseInt(matcher.group(1));
+			float duration = Float.parseFloat(matcher.group(2));
+			
+			if (duration != 0 && amount != 0) {
+				this.speedSamplesRendered = amount / duration;
+			}
+		}
+		
+		// should we use this, instead ???
+		// "Average time per sample: 0.052112 seconds"
+	}
+	
 	private void updateRenderingStatus(String line, int progress) {
 		if (getUpdateRenderingStatusMethod() == null || getUpdateRenderingStatusMethod().equals(Job.UPDATE_METHOD_BY_REMAINING_TIME)) {
 			String search_remaining = "remaining:";