diff --git a/src/PowerSystemsUnits.jl b/src/PowerSystemsUnits.jl
index 41b2772..c5b9b45 100644
--- a/src/PowerSystemsUnits.jl
+++ b/src/PowerSystemsUnits.jl
@@ -20,6 +20,10 @@ export asqtype, fustrip, UnitfulMissing
 @dimension Money "Money" Currency
 @refunit USD "USD" Currency Money false
 
+# Monetary and Power Units
+@derived_dimension MoneyPerPowerHour Money*𝐋^-2*𝐌^-1*𝐓^2
+@unit USDPerMWh "USDPerMWh" DollarPerMegaWattHour USD/(1000000*Wh) false 
+
 include("utils.jl")
 
 # Pre compilation currently causes issues with seg faults in modules that use this one
diff --git a/test/runtests.jl b/test/runtests.jl
index 8b3fe81..fe9be85 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -3,7 +3,10 @@ using Compat.Test
 using PowerSystemsUnits
 
 using Unitful: @u_str
+using Unitful
+import Unitful: J, W, hr
 
+Unitful.register(PowerSystemsUnits)
 
 @testset "PowerSystemsUnits.jl" begin
     @testset "Units" begin
@@ -15,5 +18,10 @@ using Unitful: @u_str
             y = (offsets)u"minute"
             @test x == y
         end
+        @testset "Power Related Unit" begin
+            @test 1u"Wh" == 1u"W*hr"
+            @test 1u"VARh" == 3600u"J"
+            @test 1u"USDPerMWh" == 1u"USD/(MW*hr)"
+        end
     end
 end