diff --git a/opm/input/eclipse/EclipseState/Runspec.hpp b/opm/input/eclipse/EclipseState/Runspec.hpp
index b524a9a5e..963fb6ca6 100644
--- a/opm/input/eclipse/EclipseState/Runspec.hpp
+++ b/opm/input/eclipse/EclipseState/Runspec.hpp
@@ -472,6 +472,7 @@ public:
     bool co2Storage() const noexcept;
     bool h2Storage() const noexcept;
     bool micp() const noexcept;
+    bool mech() const noexcept;
 
     bool operator==(const Runspec& data) const;
     static bool rst_cmp(const Runspec& full_state, const Runspec& rst_state);
@@ -496,6 +497,7 @@ public:
         serializer(m_co2storage);
         serializer(m_h2storage);
         serializer(m_micp);
+        serializer(m_mech);
     }
 
 private:
@@ -517,6 +519,7 @@ private:
     bool m_co2storage;
     bool m_h2storage;
     bool m_micp;
+    bool m_mech;
 };
 
 
diff --git a/src/opm/input/eclipse/EclipseState/Runspec.cpp b/src/opm/input/eclipse/EclipseState/Runspec.cpp
index 80d5e9392..f7455b844 100644
--- a/src/opm/input/eclipse/EclipseState/Runspec.cpp
+++ b/src/opm/input/eclipse/EclipseState/Runspec.cpp
@@ -624,6 +624,7 @@ Runspec::Runspec( const Deck& deck )
     , m_co2storage (false)
     , m_h2storage (false)
     , m_micp (false)
+    , m_mech (false)
 {
     if (DeckSection::hasRUNSPEC(deck)) {
         const RUNSPECSection runspecSection{deck};
@@ -671,6 +672,12 @@ Runspec::Runspec( const Deck& deck )
                               "for details on the used model.";
             OpmLog::note(msg);
         }
+
+        if (runspecSection.hasKeyword<ParserKeywords::MECH>()) {
+            m_mech = true;
+            const std::string msg = "Simulation will solve for mechanical quantities";
+            OpmLog::note(msg);
+        }
     }
 }
 
@@ -692,6 +699,7 @@ Runspec Runspec::serializationTestObject()
     result.m_co2storage = true;
     result.m_h2storage = true;
     result.m_micp = true;
+    result.m_mech = true;
 
     return result;
 }
@@ -766,6 +774,11 @@ bool Runspec::micp() const noexcept
     return this->m_micp;
 }
 
+bool Runspec::mech() const noexcept
+{
+    return this->m_mech;
+}
+
 std::time_t Runspec::start_time() const noexcept
 {
     return this->m_start_time;
@@ -805,6 +818,7 @@ bool Runspec::rst_cmp(const Runspec& full_spec, const Runspec& rst_spec) {
         full_spec.m_co2storage == rst_spec.m_co2storage &&
         full_spec.m_h2storage == rst_spec.m_h2storage &&
         full_spec.m_micp == rst_spec.m_micp &&
+        full_spec.m_mech == rst_spec.m_mech &&
         Welldims::rst_cmp(full_spec.wellDimensions(), rst_spec.wellDimensions());
 }
 
@@ -822,7 +836,8 @@ bool Runspec::operator==(const Runspec& data) const {
            this->m_nupcol == data.m_nupcol &&
            this->m_co2storage == data.m_co2storage &&
            this->m_h2storage == data.m_h2storage &&
-           this->m_micp == data.m_micp;
+           this->m_micp == data.m_micp &&
+           this->m_mech == data.m_mech;
 }
 
 
diff --git a/src/opm/input/eclipse/share/keywords/900_OPM/M/MECH b/src/opm/input/eclipse/share/keywords/900_OPM/M/MECH
new file mode 100644
index 000000000..5aefd943a
--- /dev/null
+++ b/src/opm/input/eclipse/share/keywords/900_OPM/M/MECH
@@ -0,0 +1,6 @@
+{
+  "name": "MECH",
+  "sections": [
+    "RUNSPEC"
+  ]
+}
diff --git a/src/opm/input/eclipse/share/keywords/keyword_list.cmake b/src/opm/input/eclipse/share/keywords/keyword_list.cmake
index de5a8508d..27de33947 100644
--- a/src/opm/input/eclipse/share/keywords/keyword_list.cmake
+++ b/src/opm/input/eclipse/share/keywords/keyword_list.cmake
@@ -1113,6 +1113,7 @@ set( keywords
      900_OPM/G/GCOMPIDX
      900_OPM/G/GASDENT
      900_OPM/G/GASJT
+     900_OPM/M/MECH
      900_OPM/M/MICP
      900_OPM/M/MICPPARA
      900_OPM/M/MINNPCOL
diff --git a/tests/parser/RunspecTests.cpp b/tests/parser/RunspecTests.cpp
index 3398853d6..815d92ae0 100644
--- a/tests/parser/RunspecTests.cpp
+++ b/tests/parser/RunspecTests.cpp
@@ -1112,3 +1112,25 @@ BOOST_AUTO_TEST_CASE(NUPCOL) {
     BOOST_CHECK_EQUAL(np.value(), min_value);
 }
 
+BOOST_AUTO_TEST_CASE(Mech) {
+    const std::string input = R"(
+    RUNSPEC
+    OIL
+    GAS
+    WATER
+    MECH
+    )";
+
+    Parser parser;
+
+    auto deck = parser.parseString(input);
+
+    Runspec runspec( deck );
+    const auto& phases = runspec.phases();
+    BOOST_CHECK_EQUAL( 3U, phases.size() );
+    BOOST_CHECK( phases.active( Phase::OIL ) );
+    BOOST_CHECK( phases.active( Phase::GAS ) );
+    BOOST_CHECK( phases.active( Phase::WATER ) );
+    BOOST_CHECK( runspec.mech() );
+}
+