diff --git a/api/expression-parser.api b/api/expression-parser.api
index bccf6dd..00d1425 100644
--- a/api/expression-parser.api
+++ b/api/expression-parser.api
@@ -113,6 +113,7 @@ public final class org/hisp/dhis/lib/expression/ast/NamedFunction : java/lang/En
 	public static final field d2_countIfValue Lorg/hisp/dhis/lib/expression/ast/NamedFunction;
 	public static final field d2_countIfZeroPos Lorg/hisp/dhis/lib/expression/ast/NamedFunction;
 	public static final field d2_daysBetween Lorg/hisp/dhis/lib/expression/ast/NamedFunction;
+	public static final field d2_exponent Lorg/hisp/dhis/lib/expression/ast/NamedFunction;
 	public static final field d2_extractDataMatrixValue Lorg/hisp/dhis/lib/expression/ast/NamedFunction;
 	public static final field d2_floor Lorg/hisp/dhis/lib/expression/ast/NamedFunction;
 	public static final field d2_hasUserRole Lorg/hisp/dhis/lib/expression/ast/NamedFunction;
@@ -122,6 +123,7 @@ public final class org/hisp/dhis/lib/expression/ast/NamedFunction : java/lang/En
 	public static final field d2_lastEventDate Lorg/hisp/dhis/lib/expression/ast/NamedFunction;
 	public static final field d2_left Lorg/hisp/dhis/lib/expression/ast/NamedFunction;
 	public static final field d2_length Lorg/hisp/dhis/lib/expression/ast/NamedFunction;
+	public static final field d2_log Lorg/hisp/dhis/lib/expression/ast/NamedFunction;
 	public static final field d2_maxValue Lorg/hisp/dhis/lib/expression/ast/NamedFunction;
 	public static final field d2_minValue Lorg/hisp/dhis/lib/expression/ast/NamedFunction;
 	public static final field d2_minutesBetween Lorg/hisp/dhis/lib/expression/ast/NamedFunction;
@@ -1398,6 +1400,7 @@ public abstract interface class org/hisp/dhis/lib/expression/spi/ExpressionFunct
 	public fun d2_countIfValue (Lorg/hisp/dhis/lib/expression/spi/VariableValue;Ljava/lang/String;)I
 	public fun d2_countIfZeroPos (Lorg/hisp/dhis/lib/expression/spi/VariableValue;)I
 	public fun d2_daysBetween (Lkotlinx/datetime/LocalDate;Lkotlinx/datetime/LocalDate;)I
+	public fun d2_exponent (Ljava/lang/Number;Ljava/lang/Number;)D
 	public fun d2_extractDataMatrixValue (Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;
 	public fun d2_floor (Ljava/lang/Number;)D
 	public fun d2_hasUserRole (Ljava/lang/String;Ljava/util/List;)Z
@@ -1460,6 +1463,7 @@ public final class org/hisp/dhis/lib/expression/spi/ExpressionFunctions$DefaultI
 	public static fun d2_countIfValue (Lorg/hisp/dhis/lib/expression/spi/ExpressionFunctions;Lorg/hisp/dhis/lib/expression/spi/VariableValue;Ljava/lang/String;)I
 	public static fun d2_countIfZeroPos (Lorg/hisp/dhis/lib/expression/spi/ExpressionFunctions;Lorg/hisp/dhis/lib/expression/spi/VariableValue;)I
 	public static fun d2_daysBetween (Lorg/hisp/dhis/lib/expression/spi/ExpressionFunctions;Lkotlinx/datetime/LocalDate;Lkotlinx/datetime/LocalDate;)I
+	public static fun d2_exponent (Lorg/hisp/dhis/lib/expression/spi/ExpressionFunctions;Ljava/lang/Number;Ljava/lang/Number;)D
 	public static fun d2_extractDataMatrixValue (Lorg/hisp/dhis/lib/expression/spi/ExpressionFunctions;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;
 	public static fun d2_floor (Lorg/hisp/dhis/lib/expression/spi/ExpressionFunctions;Ljava/lang/Number;)D
 	public static fun d2_hasUserRole (Lorg/hisp/dhis/lib/expression/spi/ExpressionFunctions;Ljava/lang/String;Ljava/util/List;)Z
diff --git a/build.gradle.kts b/build.gradle.kts
index d24ca67..7456fd5 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -11,7 +11,7 @@ repositories {
     mavenCentral()
 }
 
-version = "1.4.2-SNAPSHOT"
+version = "1.4.3-SNAPSHOT"
 group = "org.hisp.dhis.lib.expression"
 
 if (project.hasProperty("removeSnapshotSuffix")) {
diff --git a/src/commonMain/kotlin/org/hisp/dhis/lib/expression/ast/NamedFunction.kt b/src/commonMain/kotlin/org/hisp/dhis/lib/expression/ast/NamedFunction.kt
index 014a8e9..ea94282 100644
--- a/src/commonMain/kotlin/org/hisp/dhis/lib/expression/ast/NamedFunction.kt
+++ b/src/commonMain/kotlin/org/hisp/dhis/lib/expression/ast/NamedFunction.kt
@@ -55,6 +55,7 @@ enum class NamedFunction(
     d2_countIfValue("d2:countIfValue", ValueType.NUMBER, ValueType.MIXED, ValueType.MIXED),
     d2_countIfZeroPos("d2:countIfZeroPos", ValueType.NUMBER, ValueType.NUMBER),
     d2_daysBetween("d2:daysBetween", ValueType.NUMBER, ValueType.DATE, ValueType.DATE),
+    d2_exponent("d2:exponent", ValueType.NUMBER, ValueType.NUMBER),
     d2_extractDataMatrixValue("d2:extractDataMatrixValue", ValueType.STRING, ValueType.STRING, ValueType.STRING),
     d2_floor("d2:floor", ValueType.NUMBER, ValueType.NUMBER),
     d2_hasUserRole("d2:hasUserRole", ValueType.BOOLEAN, ValueType.STRING),
@@ -64,6 +65,7 @@ enum class NamedFunction(
     d2_lastEventDate("d2:lastEventDate", ValueType.DATE, ValueType.STRING),
     d2_left("d2:left", ValueType.STRING, ValueType.STRING, ValueType.NUMBER),
     d2_length("d2:length", ValueType.NUMBER, ValueType.STRING),
+    d2_log("d2:log", ValueType.NUMBER, ValueType.NUMBER, ValueType.NUMBER),
     d2_maxValue("d2:maxValue", ValueType.NUMBER, ValueType.MIXED),
     d2_minutesBetween("d2:minutesBetween", ValueType.NUMBER, ValueType.DATE, ValueType.DATE),
     d2_minValue("d2:minValue", ValueType.NUMBER, ValueType.MIXED),
diff --git a/src/commonMain/kotlin/org/hisp/dhis/lib/expression/eval/Calculator.kt b/src/commonMain/kotlin/org/hisp/dhis/lib/expression/eval/Calculator.kt
index 57fc36e..c92586b 100644
--- a/src/commonMain/kotlin/org/hisp/dhis/lib/expression/eval/Calculator.kt
+++ b/src/commonMain/kotlin/org/hisp/dhis/lib/expression/eval/Calculator.kt
@@ -68,7 +68,7 @@ internal class Calculator(
             NamedFunction.isNotNull -> functions.isNotNull(evalToMixed(fn.child(0)))
             NamedFunction.isNull -> functions.isNull(evalToMixed(fn.child(0)))
             NamedFunction.least -> functions.least(evalToNumbers(fn.children()))
-            NamedFunction.log -> if (fn.size() == 1) functions.log(evalToNumber(fn.child(0)))
+            NamedFunction.log, NamedFunction.d2_log -> if (fn.size() == 1) functions.log(evalToNumber(fn.child(0)))
             else functions.log(evalToNumber(fn.child(0))) / functions.log(evalToNumber(fn.child(1)))
             NamedFunction.log10 -> functions.log10(evalToNumber(fn.child(0)))
             NamedFunction.removeZeros -> functions.removeZeros(evalToNumber(fn.child(0)))
@@ -124,6 +124,9 @@ internal class Calculator(
                 evalToDate(fn.child(0)),
                 evalToDate(fn.child(1)))
             NamedFunction.d2_oizp -> functions.d2_oizp(evalToNumber(fn.child(0)))
+            NamedFunction.d2_exponent -> functions.d2_exponent(
+                evalToNumber(fn.child(0)),
+                evalToNumber(fn.child(1)))
             NamedFunction.d2_right -> functions.d2_right(
                 evalToString(fn.child(0)),
                 evalToInteger(fn.child(1)))
diff --git a/src/commonMain/kotlin/org/hisp/dhis/lib/expression/spi/ExpressionFunctions.kt b/src/commonMain/kotlin/org/hisp/dhis/lib/expression/spi/ExpressionFunctions.kt
index 007cbed..eea619a 100644
--- a/src/commonMain/kotlin/org/hisp/dhis/lib/expression/spi/ExpressionFunctions.kt
+++ b/src/commonMain/kotlin/org/hisp/dhis/lib/expression/spi/ExpressionFunctions.kt
@@ -10,6 +10,7 @@ import org.hisp.dhis.lib.expression.math.ZScore
 import kotlin.math.ceil
 import kotlin.math.floor
 import kotlin.math.ln
+import kotlin.math.pow
 
 /**
  * Implementation API for all expression languages functions.
@@ -208,6 +209,10 @@ fun interface ExpressionFunctions {
         return start.daysUntil(end)
     }
 
+    fun d2_exponent(base: Number?, exponent: Number?): Double {
+        return (base ?: 1.0).toDouble().pow((exponent ?: 0).toDouble())
+    }
+
     fun d2_extractDataMatrixValue(gs1Key: String?, value: String?): String? {
         return fromKey(gs1Key!!).format(value)
     }
diff --git a/src/commonMain/kotlin/org/hisp/dhis/lib/expression/syntax/ExpressionGrammar.kt b/src/commonMain/kotlin/org/hisp/dhis/lib/expression/syntax/ExpressionGrammar.kt
index 0398e35..97df64c 100644
--- a/src/commonMain/kotlin/org/hisp/dhis/lib/expression/syntax/ExpressionGrammar.kt
+++ b/src/commonMain/kotlin/org/hisp/dhis/lib/expression/syntax/ExpressionGrammar.kt
@@ -104,7 +104,9 @@ object ExpressionGrammar {
         fn(NamedFunction.d2_count, dataItem),
         fn(NamedFunction.d2_countIfValue, dataItem, expr),
         fn(NamedFunction.d2_daysBetween, expr, expr),
+        fn(NamedFunction.d2_exponent, expr, expr),
         fn(NamedFunction.d2_hasValue, dataItem),
+        fn(NamedFunction.d2_log, expr, expr.maybe()),
         fn(NamedFunction.d2_maxValue, dataItem),
         fn(NamedFunction.d2_minutesBetween, expr, expr),
         fn(NamedFunction.d2_minValue, dataItem),
diff --git a/src/commonTest/kotlin/org/hisp/dhis/lib/expression/function/ExponentTest.kt b/src/commonTest/kotlin/org/hisp/dhis/lib/expression/function/ExponentTest.kt
new file mode 100644
index 0000000..9f936ed
--- /dev/null
+++ b/src/commonTest/kotlin/org/hisp/dhis/lib/expression/function/ExponentTest.kt
@@ -0,0 +1,37 @@
+package org.hisp.dhis.lib.expression.function
+
+import org.hisp.dhis.lib.expression.Expression
+import org.hisp.dhis.lib.expression.ExpressionMode
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+/**
+ * Tests the `d2:exponent` function
+ *
+ * @author Tony Valle
+ */
+internal class ExponentTest {
+
+    @Test
+    fun testExponent() {
+        assertEquals(1.0, evaluate("d2:exponent(49, 0)"))
+        assertEquals(7.0, evaluate("d2:exponent(49, 0.5)"))
+        assertEquals(49.0, evaluate("d2:exponent(49, 1)"))
+        assertEquals(64.0, evaluate("d2:exponent(32, 1.2)") as Double, errorMargin)
+        assertEquals(25.0, evaluate("d2:exponent(0.2, -2)") as Double, errorMargin)
+    }
+
+    @Test
+    fun testExponent_Whitespace() {
+        assertEquals(2.0, evaluate("d2:exponent(2,1)"))
+        assertEquals(2.0, evaluate("d2:exponent( 2, 1)"))
+        assertEquals(2.0, evaluate("d2:exponent(2 , 1 )"))
+        assertEquals(2.0, evaluate("d2:exponent( 2 , 1 )"))
+    }
+
+    private val errorMargin: Double = 0.00000001
+
+    private fun evaluate(expression: String): Any? {
+        return Expression(expression, ExpressionMode.RULE_ENGINE_ACTION).evaluate()
+    }
+}
diff --git a/src/commonTest/kotlin/org/hisp/dhis/lib/expression/function/LogTest.kt b/src/commonTest/kotlin/org/hisp/dhis/lib/expression/function/LogTest.kt
index b4070d5..2414087 100644
--- a/src/commonTest/kotlin/org/hisp/dhis/lib/expression/function/LogTest.kt
+++ b/src/commonTest/kotlin/org/hisp/dhis/lib/expression/function/LogTest.kt
@@ -1,6 +1,7 @@
 package org.hisp.dhis.lib.expression.function
 
 import org.hisp.dhis.lib.expression.Expression
+import org.hisp.dhis.lib.expression.ExpressionMode
 import kotlin.test.Test
 import kotlin.test.assertEquals
 
@@ -25,6 +26,11 @@ internal class LogTest {
         assertEquals(Double.POSITIVE_INFINITY, evaluate("log( 2 , 1 )"))
     }
 
+    @Test
+    fun testD2Log() {
+        assertEquals(3.0, Expression("d2:log(8, 2)", ExpressionMode.RULE_ENGINE_ACTION).evaluate())
+    }
+
     private fun evaluate(expression: String): Any? {
         return Expression(expression).evaluate()
     }