EnergyModelsX · JulStraus · Apr 9, 2026 · Apr 8, 2026 · Apr 8, 2026 · Apr 8, 2026
diff --git a/NEWS.md b/NEWS.md
@@ -2,6 +2,14 @@
 
 ## Unversioned
 
+### Breaking changes
+
+* Adjusted to the changes introduced in [`EnergyModelsInvestments` 0.9](https://github.com/EnergyModelsX/EnergyModelsInvestments.jl/releases/tag/v0.9.0):
+  * Breaking change required as early retirement is now allowed.
+  * Changed the function call arguments for [`add_investment_constraints`](https://github.com/EnergyModelsX/EnergyModelsInvestments.jl/blob/0c84eb4fabdf6f3c188812a3555b40f2681e916b/src/model.jl#L1).
+
+### Minor updates
+
 * Introduced support in checks for `TwoLevelTree` and `StrategicStochasticProfile`.
 
 ## Version 0.9.5 (2026-03-25)
@@ -59,10 +67,10 @@
 ### Rework of data
 
 * Renamed extension data related functions and types:
-  * `Data` is now called `ExtraData`.
+  * `Data` is now called `ExtensionData`.
   * `create_data` is now called `create_ext_data`.
 * The old version is still accessible, but will be removed in release 0.10.
-* Allow for variable creation for `ExtraData` types and implemented the approach for `InvestmentData` for both `Node`s and `Link`s.
+* Allow for variable creation for `ExtensionData` types and implemented the approach for `InvestmentData` for both `Node`s and `Link`s.
 
 ### Minor updates
 

diff --git a/Project.toml b/Project.toml
@@ -1,7 +1,7 @@
 name = "EnergyModelsBase"
 uuid = "5d7e687e-f956-46f3-9045-6f5a5fd49f50"
 authors = ["Lars Hellemo <Lars.Hellemo@sintef.no>, Julian Straus <Julian.Straus@sintef.no>"]
-version = "0.9.5"
+version = "0.10.0"
 
 [deps]
 JuMP = "4076af6c-e467-56ae-b986-b466b2749572"
@@ -15,7 +15,7 @@ EnergyModelsInvestments = "fca3f8eb-b383-437d-8e7b-aac76bb2004f"
 EMIExt = "EnergyModelsInvestments"
 
 [compat]
-EnergyModelsInvestments = "0.8"
+EnergyModelsInvestments = "0.9"
 JuMP = "1"
 SparseVariables = "0.7.3"
 TimeStruct = "0.9"

diff --git a/ext/EMIExt/constraints.jl b/ext/EMIExt/constraints.jl
@@ -24,10 +24,9 @@ function EMB.constraints_capacity_installed(
         # Extract the investment data, the discount rate, and the strategic periods
         disc_rate = discount_rate(modeltype)
         inv_data = investment_data(n, :cap)
-        𝒯ᴵⁿᵛ = strategic_periods(𝒯)
 
         # Add the investment constraints
-        EMI.add_investment_constraints(m, n, inv_data, :cap, :cap, 𝒯ᴵⁿᵛ, disc_rate)
+        EMI.add_investment_constraints(m, n, inv_data, :cap, :cap, 𝒯, disc_rate)
     else
         for t ∈ 𝒯
             fix(m[:cap_inst][n, t], EMB.capacity(n, t); force = true)
@@ -42,7 +41,6 @@ function EMB.constraints_capacity_installed(
 )
     # Extract the he discount rate and the strategic periods
     disc_rate = discount_rate(modeltype)
-    𝒯ᴵⁿᵛ = strategic_periods(𝒯)
 
     cap_map = Dict(:charge => charge, :level => level, :discharge => discharge)
 
@@ -58,7 +56,7 @@ function EMB.constraints_capacity_installed(
             inv_data = investment_data(n, cap)
 
             # Add the investment constraints
-            EMI.add_investment_constraints(m, n, inv_data, cap, prefix, 𝒯ᴵⁿᵛ, disc_rate)
+            EMI.add_investment_constraints(m, n, inv_data, cap, prefix, 𝒯, disc_rate)
 
         elseif isa(stor_par, EMB.UnionCapacity)
             for t ∈ 𝒯
@@ -77,10 +75,9 @@ function EMB.constraints_capacity_installed(
         # Extract the investment data, the discount rate, and the strategic periods
         disc_rate = discount_rate(modeltype)
         inv_data = investment_data(l, :cap)
-        𝒯ᴵⁿᵛ = strategic_periods(𝒯)
 
         # Add the investment constraints
-        EMI.add_investment_constraints(m, l, inv_data, :cap, :link_cap, 𝒯ᴵⁿᵛ, disc_rate)
+        EMI.add_investment_constraints(m, l, inv_data, :cap, :link_cap, 𝒯, disc_rate)
     else
         for t ∈ 𝒯
             fix(m[:link_cap_inst][l, t], EMB.capacity(l, t); force = true)

diff --git a/src/structures/data.jl b/src/structures/data.jl
@@ -229,18 +229,18 @@ When multiple inputs are provided, a constructor directly creates the correspond
   [`StartInvData`](@extref EnergyModelsInvestments.StartInvData) type for the investment data.
 - **`inv_mode::Investment`** is the chosen investment mode for the technology. The following
   investment modes are currently available:
-  [`BinaryInvestment`](@extref EnergyModelsInvestments),
-  [`DiscreteInvestment`](@extref EnergyModelsInvestments),
-  [`ContinuousInvestment`](@extref EnergyModelsInvestments),
-  [`SemiContinuousInvestment`](@extref EnergyModelsInvestments), or
-  [`FixedInvestment`](@extref EnergyModelsInvestments).
+  [`BinaryInvestment`](@extref EnergyModelsInvestments.BinaryInvestment),
+  [`DiscreteInvestment`](@extref EnergyModelsInvestments.DiscreteInvestment),
+  [`ContinuousInvestment`](@extref EnergyModelsInvestments.ContinuousInvestment),
+  [`SemiContinuousInvestment`](@extref EnergyModelsInvestments.SemiContinuousInvestment), or
+  [`FixedInvestment`](@extref EnergyModelsInvestments.FixedInvestment).
 - **`life_mode::LifetimeMode`** is type of handling the lifetime. Several different
   alternatives can be used:
-  [`UnlimitedLife`](@extref EnergyModelsInvestments),
-  [`StudyLife`](@extref EnergyModelsInvestments),
-  [`PeriodLife`](@extref EnergyModelsInvestments), or
-  [`RollingLife`](@extref EnergyModelsInvestments). If `life_mode` is not specified, the
-  model assumes an [`UnlimitedLife`](@extref EnergyModelsInvestments).
+  [`UnlimitedLife`](@extref EnergyModelsInvestments.UnlimitedLife),
+  [`StudyLife`](@extref EnergyModelsInvestments.StudyLife),
+  [`PeriodLife`](@extref EnergyModelsInvestments.PeriodLife), or
+  [`RollingLife`](@extref EnergyModelsInvestments.RollingLife). If `life_mode` is not
+  specified, the model assumes an [`UnlimitedLife`](@extref EnergyModelsInvestments.UnlimitedLife).
 """
 abstract type SingleInvData <: InvestmentData end
 

diff --git a/test/test_investments.jl b/test/test_investments.jl
@@ -227,7 +227,8 @@ using EnergyModelsInvestments
     # Test results
     # (-724 compared to 0.5.x as RefStorage as emission source does not require a charge
     #  capacity any longer in 0.7.x)
-    @test round(objective_value(m)) ≈ -302624
+    # (-10736 compared to 0.9.x due to the potential of early retirment)
+    @test round(objective_value(m)) ≈ -313360.0
 
     # Test that investments are happening
     𝒯ᴵⁿᵛ = strategic_periods(get_time_struct(case))
@@ -259,10 +260,9 @@ end
         id::Any
         from::EMB.Node
         to::EMB.Node
-        formulation::EMB.Formulation
         data::Vector{<:ExtensionData}
     end
-    function EMB.create_link(m, 𝒯, 𝒫, l::InvDirect, modeltype::EnergyModel, formulation::EMB.Formulation)
+    function EMB.create_link(m, l::InvDirect, 𝒯, 𝒫, modeltype::EnergyModel)
 
         # Generic link in which each output corresponds to the input
         @constraint(m, [t ∈ 𝒯, p ∈ EMB.link_res(l)],
@@ -317,7 +317,7 @@ end
         nodes = [source_1, source_2, sink]
         links = Link[
             OpexDirect("OpexDirect", source_1, sink, Linear()),
-            InvDirect("InvDirect", source_2, sink, Linear(), data_link),
+            InvDirect("InvDirect", source_2, sink, data_link),
         ]
 
         # Creation of the time structure and global data
@@ -359,7 +359,7 @@ end
     )
 
     # Test that investments are happening
-    @test value.(m[:link_cap_add])[ℒ[2],𝒯ᴵⁿᵛ[3]] == 3
+    @test sum(value.(m[:link_cap_add])[ℒ[2], t_inv] for t_inv ∈ 𝒯ᴵⁿᵛ) == 3
 
     # Test that the variables are `link_cap_capex`, `link_cap_current`, `link_cap_add` and
     # `link_cap_rem` are created for the corresponding links while `link_cap_invest_b` and
@@ -679,7 +679,7 @@ EMB.TEST_ENV = true
                 Dict(Power => 1),
             )
             nodes = [source, sink]
-            links = [InvDirect("scr-sink", nodes[1], nodes[2], Linear(), inv_data)]
+            links = [InvDirect("scr-sink", nodes[1], nodes[2], inv_data)]
             T = TwoLevel(4, 10, SimpleTimes(4, 1))
             case = Case(T, products, [nodes, links], [[get_nodes, get_links]])