diff --git a/src/ac/ed/lurg/ModelConfig.java b/src/ac/ed/lurg/ModelConfig.java
index 7acc7e5416224e95da4d641365d39a300f06e886..3d43a15150da48509b8e256e078a63adcdfd249b 100644
--- a/src/ac/ed/lurg/ModelConfig.java
+++ b/src/ac/ed/lurg/ModelConfig.java
@@ -153,13 +153,16 @@ public class ModelConfig {
 	public static final double PASTURE_HARVEST_FRACTION = getDoubleProperty("PASTURE_HARVEST_FRACTION", 0.25);
 	public static final double MEAT_EFFICIENCY = getDoubleProperty("MEAT_EFFICIENCY", 1.0);  // 'meat' is includes feed conversion ratio already, this is tech. change or similar
 	public static final double IRRIGIATION_EFFICIENCY = getDoubleProperty("IRRIGIATION_EFFICIENCY", 0.5);
-	public static final double LAND_CHANGE_COST = getDoubleProperty("LAND_CHANGE_COST", 0.5);
+	public static final double LAND_CHANGE_COST = getDoubleProperty("LAND_CHANGE_COST", 0.8);
 	public static final double MIN_FEED_RATE = getDoubleProperty("MIN_FEED_RATE", 0.15);
 	public static final double SEED_AND_WASTE_FRACTION = getDoubleProperty("SEED_AND_WASTE_FRACTION", 0.15);  
 
 	public static final double TECHNOLOGY_CHANGE_ANNUAL_RATE = getDoubleProperty("TECHNOLOGY_CHANGE_ANNUAL_RATE", 0.0);
 	public static final int TECHNOLOGY_CHANGE_START_STEP = getIntProperty("TECHNOLOGY_CHANGE_START_STEP", 0);
 	
+	public static final double BIOENERGY_CHANGE_ANNUAL_RATE = getDoubleProperty("BIOENERGY_CHANGE_ANNUAL_RATE", 0.0);
+	public static final int BIOENERGY_CHANGE_START_YEAR = getIntProperty("BIOENERGY_CHANGE_START_YEAR", 2010);
+
 	public static final double MARKET_LAMBA = getDoubleProperty("MARKET_LAMBA", 0.5); // controls international market price adjustment rate
 	public static final double POPULATION_AGGREG_LIMIT = getDoubleProperty("POPULATION_AGGREG_LIMIT", 40.0);  // in millions, smaller countries are aggregated on a regional basis
 	
@@ -168,7 +171,7 @@ public class ModelConfig {
 	public static final double OTHER_INTENSITY_COST = getDoubleProperty("OTHER_INTENSITY_COST", 0.3);
 	public static final double OTHER_INTENSITY_PARAM = getDoubleProperty("OTHER_INTENSITY_PARAM", 3.22);
 
-	public static final double IRRIG_COST_SCALE_FACTOR = getDoubleProperty("IRRIG_COST_SCALE_FACTOR", 0.01);
+	public static final double IRRIG_COST_SCALE_FACTOR = getDoubleProperty("IRRIG_COST_SCALE_FACTOR", 0.02);
 	public static final double FERTILISER_COST_PER_T = getDoubleProperty("FERTILISER_COST_PER_T", 0.87 * 1.4 * 2); // £900/t N *  1.4$/£ * 2NPK/N
 	public static final double FERTILISER_MAX_COST = FERTILISER_COST_PER_T * MAX_FERT_AMOUNT/1000;
 	
diff --git a/src/ac/ed/lurg/demand/DemandManager.java b/src/ac/ed/lurg/demand/DemandManager.java
index f3e5d6d058d5de108ee129261fbde7ed6667f24e..d3c15d30377c40e4853187fecf69fe4f327906ca 100644
--- a/src/ac/ed/lurg/demand/DemandManager.java
+++ b/src/ac/ed/lurg/demand/DemandManager.java
@@ -75,7 +75,11 @@ public class DemandManager {
 		// could adjust for year somehow, but not doing this yet
 		if (bioenergyBaseDemand != null && bioenergyBaseDemand.containsKey(country)) {
 			Double d = bioenergyBaseDemand.get(country).get(commodity);
-			return d == null ? 0 : d.doubleValue();
+			
+			int yearsOfChange = year - ModelConfig.BIOENERGY_CHANGE_START_YEAR;
+			double bioenergyDemandAdj = yearsOfChange > 0 ?  (1.0 +  yearsOfChange * ModelConfig.BIOENERGY_CHANGE_ANNUAL_RATE) : 1.0 ;
+
+			return d == null ? 0 : d.doubleValue() * bioenergyDemandAdj;
 		}
 		return 0.0;
 	}
diff --git a/src/ac/ed/lurg/yield/LPJYieldResponseMapReader.java b/src/ac/ed/lurg/yield/LPJYieldResponseMapReader.java
index c2f003babc70f30b7194c9ee790e83ea473a44a3..792daf85c75bcebf36900206514940ed95dc9d9e 100644
--- a/src/ac/ed/lurg/yield/LPJYieldResponseMapReader.java
+++ b/src/ac/ed/lurg/yield/LPJYieldResponseMapReader.java
@@ -53,7 +53,7 @@ public class LPJYieldResponseMapReader {
 		
 		AbstractTabularRasterReader<YieldResponsesItem> nppReader = new AbstractTabularRasterReader<YieldResponsesItem>("\\s+", 10, yieldRaster) {
 			protected void setData(RasterKey key, YieldResponsesItem item, Map<String, Double> rowValues) {
-				double adjFactor = 2 * 10 * ModelConfig.PASTURE_HARVEST_FRACTION;  // 2 for carbon units,  10 for kg/m2 to t/ha, and 0.5 for half grazed
+				double adjFactor = 2.2 * 10 * ModelConfig.PASTURE_HARVEST_FRACTION;  // 2.2 for carbon units,  10 for kg/m2 to t/ha, and 0.5 for half grazed
 								
 				for (FertiliserRate fert : FertiliserRate.values()) {
 					double pastureYield;