From 42c55e4cfecc42a313069a094690e6fb7366c56b Mon Sep 17 00:00:00 2001
From: Timothy Nunn <timothy.nunn@ukaea.uk>
Date: Wed, 5 Nov 2025 10:47:36 +0000
Subject: [PATCH] Use Clarbel instead of OSQP to solve QPP in VMCON

---
 process/solver.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/process/solver.py b/process/solver.py
index 6a6d90e255..2a4ddb88c5 100644
--- a/process/solver.py
+++ b/process/solver.py
@@ -4,6 +4,7 @@
 import logging
 from abc import ABC, abstractmethod
 
+import cvxpy
 import numpy as np
 from pyvmcon import (
     AbstractProblem,
@@ -217,7 +218,7 @@ def _ineq_cons_satisfied(
                 np.array(self.bndu),
                 max_iter=global_variables.maxcal,
                 epsilon=self.tolerance,
-                qsp_options={"adaptive_rho_interval": 25},
+                qsp_options={"solver": cvxpy.CLARABEL},
                 initial_B=bb,
                 callback=_solver_callback,
                 additional_convergence=_ineq_cons_satisfied