diff --git a/constructor/nsis/main.nsi.tmpl b/constructor/nsis/main.nsi.tmpl
index c4897dac4..ad07381dd 100644
--- a/constructor/nsis/main.nsi.tmpl
+++ b/constructor/nsis/main.nsi.tmpl
@@ -1113,6 +1113,7 @@ Section "Install"
     File /nonfatal /r __INDEX_CACHE__
     File /r __REPODATA_RECORD__
 
+    @EXTRA_ENV_VARIABLES@
     System::Call 'kernel32::SetEnvironmentVariable(t,t)i("CONDA_SAFETY_CHECKS", "disabled").r0'
     System::Call 'kernel32::SetEnvironmentVariable(t,t)i("CONDA_EXTRA_SAFETY_CHECKS", "no").r0'
     System::Call 'kernel32::SetEnvironmentVariable(t,t)i("CONDA_PKGS_DIRS", "$INSTDIR\pkgs")".r0'
diff --git a/constructor/winexe.py b/constructor/winexe.py
index 345378ce7..fcab7336f 100644
--- a/constructor/winexe.py
+++ b/constructor/winexe.py
@@ -86,6 +86,23 @@ def insert_tempfiles_commands(paths: os.PathLike) -> List[str]:
         lines.append(f"File {path}")
     return lines
 
+def setup_extra_env_variables(info) -> List[str]:
+    """Helper function to insert extra environment variables into nsis template.
+
+    Args:
+        info: Dictionary of information parsed from construct.yaml
+
+    Returns:
+        List[str]: Commands to be inserted into nsi template
+    """
+    lines = []
+    for variable in info.get('extra_env_variables',[]):
+        split = variable.split('=')
+        if len(split)==2:
+            (name, val) = split
+        lines.append(f"""System::Call 'kernel32::SetEnvironmentVariable(t,t)i("{name}", "{val}").r0'""")
+
+    return lines
 
 def custom_nsi_insert_from_file(filepath: os.PathLike) -> str:
     """Insert NSI script commands from file.
@@ -332,6 +349,7 @@ def make_nsi(info, dir_path, extra_files=None, temp_extra_files=None):
                                       '${NAME} ${VERSION} (Python ${PYVERSION} ${ARCH})'
                                       )),
         ('@EXTRA_FILES@', '\n    '.join(extra_files_commands(extra_files, dir_path))),
+        ('@EXTRA_ENV_VARIABLES@', '\n    '.join(setup_extra_env_variables(info))),
         (
             '@CUSTOM_WELCOME_FILE@',
             custom_nsi_insert_from_file(info.get('welcome_file', ''))
diff --git a/examples/scripts/post_install.bat b/examples/scripts/post_install.bat
index 6b80f986a..a4113f8c7 100644
--- a/examples/scripts/post_install.bat
+++ b/examples/scripts/post_install.bat
@@ -4,4 +4,6 @@ if not "%INSTALLER_VER%" == "X" exit 1
 if not "%INSTALLER_PLAT%" == "win-64" exit 1
 if not "%INSTALLER_TYPE%" == "EXE" exit 1
 if "%PREFIX%" == "" exit 1
+if not "%CUSTOM_VARIABLE_1%" == "CUSTOM1" exit 1
+if not "%CUSTOM_VARIABLE_2%" == "CUSTOM2" exit 1
 if not exist "%PREFIX%\pre_install_sentinel.txt" exit 1
diff --git a/examples/scripts/pre_install.bat b/examples/scripts/pre_install.bat
index d1bd0598a..27b788685 100644
--- a/examples/scripts/pre_install.bat
+++ b/examples/scripts/pre_install.bat
@@ -3,4 +3,6 @@ if not "%INSTALLER_VER%" == "X" exit 1
 if not "%INSTALLER_PLAT%" == "win-64" exit 1
 if not "%INSTALLER_TYPE%" == "EXE" exit 1
 if "%PREFIX%" == "" exit 1
+if not "%CUSTOM_VARIABLE_1%" == "CUSTOM1" exit 1
+if not "%CUSTOM_VARIABLE_2%" == "CUSTOM2" exit 1
 echo Added by pre-install script > "%PREFIX%\pre_install_sentinel.txt"