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Fix MIP output failure from unconditional dual access in write_capacity #898

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Fix MIP output failure from unconditional dual access in write_capacity #898

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7a34a31
Initial plan
Copilot Jan 20, 2026
c46cfee
Guard dual access in write_capacity.jl with has_duals check
Copilot Jan 20, 2026
b3119e5
Fix typo in write_capacity docstring
Copilot Jan 20, 2026
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8 changes: 5 additions & 3 deletions src/write_outputs/write_capacity.jl
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
@doc raw"""
write_capacity(path::AbstractString, inputs::Dict, setup::Dict, EP::Model))

Function for writing the diferent capacities for the different generation technologies (starting capacities or, existing capacities, retired capacities, and new-built capacities).
Function for writing the different capacities for the different generation technologies (starting capacities or, existing capacities, retired capacities, and new-built capacities).
"""
function write_capacity(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)
gen = inputs["RESOURCES"]
Expand Down Expand Up @@ -49,8 +49,10 @@ function write_capacity(path::AbstractString, inputs::Dict, setup::Dict, EP::Mod
end

capacity_constraint_dual = zeros(size(inputs["RESOURCE_NAMES"]))
for y in ids_with_positive(gen, max_cap_mw)
capacity_constraint_dual[y] = -dual.(EP[:cMaxCap][y])
if has_duals(EP)
for y in ids_with_positive(gen, max_cap_mw)
capacity_constraint_dual[y] = -dual.(EP[:cMaxCap][y])
end
end

capcharge = zeros(size(inputs["RESOURCE_NAMES"]))
Expand Down