diff --git a/include/cantera/cython/wrappers.h b/include/cantera/cython/wrappers.h
index 69fc5f6ef..f20867365 100644
--- a/include/cantera/cython/wrappers.h
+++ b/include/cantera/cython/wrappers.h
@@ -75,7 +75,6 @@ KIN_1D(getRevRatesOfProgress)
 KIN_1D(getNetRatesOfProgress)
 
 KIN_1D(getEquilibriumConstants)
-KIN_1D(getActivationEnergies)
 KIN_1D(getFwdRateConstants)
 KIN_1D(getRevRateConstants)
 
diff --git a/include/cantera/kinetics/InterfaceKinetics.h b/include/cantera/kinetics/InterfaceKinetics.h
index 169eeea77..9829c2725 100644
--- a/include/cantera/kinetics/InterfaceKinetics.h
+++ b/include/cantera/kinetics/InterfaceKinetics.h
@@ -173,7 +173,6 @@ public:
     virtual void getFwdRateConstants(doublereal* kfwd);
     virtual void getRevRateConstants(doublereal* krev,
                                      bool doIrreversible = false);
-    virtual void getActivationEnergies(doublereal* E);
 
     //! @}
     //! @name Reaction Mechanism Construction
diff --git a/include/cantera/kinetics/Kinetics.h b/include/cantera/kinetics/Kinetics.h
index 7b2ec9ba2..57e7d7fb1 100644
--- a/include/cantera/kinetics/Kinetics.h
+++ b/include/cantera/kinetics/Kinetics.h
@@ -740,18 +740,6 @@ public:
         err("getFwdRateConstants");
     }
 
-    /**
-     * Return the activation energies in Kelvin.
-     *
-     * length is the number of reactions
-     *
-     * @param E     Ouptut vector of activation energies. Length: m_ii.
-     * @deprecated To be removed in Cantera 2.2.
-     */
-    virtual void getActivationEnergies(doublereal* E) {
-        err("getActivationEnergies");
-    }
-
     //! @}
     //! @name Reaction Mechanism Construction
     //! @{
diff --git a/interfaces/cython/cantera/_cantera.pxd b/interfaces/cython/cantera/_cantera.pxd
index 05353001c..975ec753a 100644
--- a/interfaces/cython/cantera/_cantera.pxd
+++ b/interfaces/cython/cantera/_cantera.pxd
@@ -543,7 +543,6 @@ cdef extern from "cantera/cython/wrappers.h":
     cdef void kin_getNetRatesOfProgress(CxxKinetics*, double*) except +
 
     cdef void kin_getEquilibriumConstants(CxxKinetics*, double*) except +
-    cdef void kin_getActivationEnergies(CxxKinetics*, double*) except +
     cdef void kin_getFwdRateConstants(CxxKinetics*, double*) except +
     cdef void kin_getRevRateConstants(CxxKinetics*, double*) except +
 
diff --git a/interfaces/cython/cantera/kinetics.pyx b/interfaces/cython/cantera/kinetics.pyx
index 6246c7d23..de9ad25ef 100644
--- a/interfaces/cython/cantera/kinetics.pyx
+++ b/interfaces/cython/cantera/kinetics.pyx
@@ -197,11 +197,6 @@ cdef class Kinetics(_SolutionBase):
         def __get__(self):
             return get_reaction_array(self, kin_getEquilibriumConstants)
 
-    property activation_energies:
-        """Activation energies for all reactions [K]."""
-        def __get__(self):
-            return get_reaction_array(self, kin_getActivationEnergies)
-
     property forward_rate_constants:
         """
         Forward rate constants for all reactions. Units are a combination of
diff --git a/src/clib/ct.cpp b/src/clib/ct.cpp
index 2bc55cf1a..ddcef1fb9 100644
--- a/src/clib/ct.cpp
+++ b/src/clib/ct.cpp
@@ -997,18 +997,6 @@ extern "C" {
         }
     }
 
-    int kin_getActivationEnergies(int n, size_t len, double* E)
-    {
-        try {
-            Kinetics& k = KineticsCabinet::item(n);
-            k.checkReactionArraySize(len);
-            k.getActivationEnergies(E);
-            return 0;
-        } catch (...) {
-            return handleAllExceptions(-1, ERR);
-        }
-    }
-
     int kin_getDelta(int n, int job, size_t len, double* delta)
     {
         try {
diff --git a/src/clib/ct.h b/src/clib/ct.h
index 9662274f7..2a0ffa9b7 100644
--- a/src/clib/ct.h
+++ b/src/clib/ct.h
@@ -107,7 +107,6 @@ extern "C" {
 
     CANTERA_CAPI int kin_getFwdRateConstants(int n, size_t len, double* kfwd);
     CANTERA_CAPI int kin_getRevRateConstants(int n, int doIrreversible, size_t len, double* krev);
-    CANTERA_CAPI int kin_getActivationEnergies(int n, size_t len, double* E);
     CANTERA_CAPI int kin_getDelta(int n, int job, size_t len, double* delta);
     CANTERA_CAPI int kin_getCreationRates(int n, size_t len, double* cdot);
     CANTERA_CAPI int kin_getDestructionRates(int n, size_t len, double* ddot);
diff --git a/src/kinetics/InterfaceKinetics.cpp b/src/kinetics/InterfaceKinetics.cpp
index c18048f24..5a154e8c0 100644
--- a/src/kinetics/InterfaceKinetics.cpp
+++ b/src/kinetics/InterfaceKinetics.cpp
@@ -495,13 +495,6 @@ void InterfaceKinetics::getRevRateConstants(doublereal* krev, bool doIrreversibl
     }
 }
 
-void InterfaceKinetics::getActivationEnergies(doublereal* E)
-{
-    warn_deprecated("Kinetics::getActivationEnergies",
-                    "To be removed in Cantera 2.2.");
-    copy(m_E.begin(), m_E.end(), E);
-}
-
 void InterfaceKinetics::updateROP()
 {
     _update_rates_T();