From b51a5f100386d371d6e9e8d6cbf7226703d0aa65 Mon Sep 17 00:00:00 2001
From: LKuemmel <lena.kuemmel@openwb.de>
Date: Tue, 28 Oct 2025 15:35:16 +0100
Subject: [PATCH] pv start with 3 phases: fix power calculation

---
 packages/control/counter.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/control/counter.py b/packages/control/counter.py
index 9725f8f6d5..695d6ff284 100644
--- a/packages/control/counter.py
+++ b/packages/control/counter.py
@@ -253,7 +253,7 @@ def _control_range_offset(self):
 
     def get_usable_surplus(self, feed_in_yield: float) -> float:
         # verbleibender EVU-Überschuss unter Berücksichtigung der Einspeisegrenze und Speicherleistung
-        return (-self.calc_surplus() - self.data.set.released_surplus +
+        return (-self.calc_surplus() + self.data.set.released_surplus -
                 self.data.set.reserved_surplus - feed_in_yield)
 
     SWITCH_ON_FALLEN_BELOW = "Einschaltschwelle während der Wartezeit unterschritten."