diff --git a/server/.env.example b/server/.env.example
index a649a0b..4281f55 100644
--- a/server/.env.example
+++ b/server/.env.example
@@ -4,6 +4,8 @@ STRIPE_WEBHOOK_SECRET=whsec_your_webhook_secret_here
 
 # Wren Climate API
 WREN_API_TOKEN=35c025d9-5dbb-404b-85aa-19b09da0578d
+# Set to 'true' for testing (no real offsets created), 'false' for production
+WREN_DRY_RUN=true
 
 # Server Configuration
 PORT=3001
diff --git a/server/routes/webhooks.js b/server/routes/webhooks.js
index f33091b..639901f 100644
--- a/server/routes/webhooks.js
+++ b/server/routes/webhooks.js
@@ -144,6 +144,13 @@ async function fulfillOrder(order, session) {
   try {
     console.log(`🌱 Fulfilling order ${order.id} via Wren API...`);
 
+    // Determine if we should use dry run mode based on environment
+    const isDryRun = process.env.WREN_DRY_RUN === 'true';
+
+    if (isDryRun) {
+      console.log('⚠️  DRY RUN MODE: No real offset will be created');
+    }
+
     // Create Wren offset order
     const wrenOrder = await createWrenOffsetOrder({
       tons: order.tons,
@@ -151,7 +158,7 @@ async function fulfillOrder(order, session) {
       customerEmail: session.customer_details?.email || order.customer_email,
       currency: order.currency,
       amountCents: order.total_amount,
-      dryRun: false, // Set to true for testing without creating real offsets
+      dryRun: isDryRun,
     });
 
     // Update order with Wren order ID