diff --git a/src/ac/ed/lurg/ModelConfig.java b/src/ac/ed/lurg/ModelConfig.java
index a3d22d561d31953daabc072b7c6cac432ba34836..93d587d5f6f4dbd55788e611c58810e1e745dd51 100755
--- a/src/ac/ed/lurg/ModelConfig.java
+++ b/src/ac/ed/lurg/ModelConfig.java
@@ -444,7 +444,7 @@ public class ModelConfig {
 	public static final double TIMBER_FOREST_CONVERSION_COST = getDoubleProperty("TIMBER_FOREST_CONVERSION_COST", 0.7);
 	public static final double CARBON_FOREST_CONVERSION_COST = getDoubleProperty("CARBON_FOREST_CONVERSION_COST", 10.0);
 	public static final double SOLAR_CONVERSION_COST = getDoubleProperty("SOLAR_CONVERSION_COST", 10.0);
-	public static final double NATURAL_CONVERSION_COST = getDoubleProperty("NATURAL_CONVERSION_COST", 0.15);
+	public static final double NATURAL_CONVERSION_COST = getDoubleProperty("NATURAL_CONVERSION_COST", 0.1);
 	// controls additional cost of natural conversion. Higher cost if higher proportion of land is natural
 	public static final double INFRASTRUCTURE_COST_FACTOR = getDoubleProperty("INFRASTRUCTURE_COST_FACTOR", 0.4);