add whatsnew entry for simple_efficiency vectorization test

aman-coder03 · aman-coder03 · commit 56b68acea2f8 · 2026-02-07T03:06:52.000+05:30
diff --git a/docs/sphinx/source/whatsnew/v0.15.1.rst b/docs/sphinx/source/whatsnew/v0.15.1.rst
@@ -28,7 +28,9 @@ Documentation
 
 Testing
 ~~~~~~~
-
+* Add test to verify that :py:func:`~pvlib.transformer.simple_efficiency`
+  produces consistent results for vectorized and scalar inputs.
+  (:pull:`2661`)
 
 Benchmarking
 ~~~~~~~~~~~~
