diff --git a/tests/test_power_sim.py b/tests/test_power_sim.py
new file mode 100644
index 0000000..2d2fd24
--- /dev/null
+++ b/tests/test_power_sim.py
@@ -0,0 +1,30 @@
+import pytest
+from experiment_utils.power_sim import PowerSim
+from experiment_utils.spark_instance import *
+
+
+def test_power_estimation():
+    """Test power estimation"""
+    p = PowerSim(metric='proportion', relative_effect=False, variants=1,
+                 nsim=1000, alpha=0.05, alternative='two-tailed')
+    try:
+        p.get_power(baseline=[0.33], effect=[0.03], sample_size=[3000])
+        assert True
+    except Exception as e:
+        pytest.fail(f" raised an exception: {e}")
+
+
+def test_plot_power():
+    """Test plot power"""
+    p = PowerSim(metric='proportion', relative_effect=False,
+                 variants=2, alternative='two-tailed',
+                 nsim=100, correction='holm')
+    try:
+        p.grid_sim_power(baseline_rates=[[0.33]],
+                         effects=[[0.01, 0.03], [0.03, 0.05], [0.03, 0.07]],
+                         sample_sizes=[[1000], [5000], [9000]],
+                         threads=16,
+                         plot=True)
+        assert True
+    except Exception as e:
+        pytest.fail(f" raised an exception: {e}")