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29 changes: 29 additions & 0 deletions message_ix_models/tools/bilateralize/load_and_solve.py
Original file line number Diff line number Diff line change
Expand Up @@ -242,6 +242,32 @@ def remove_pao_coal_constraint(
scen.remove_par("relation_upper", relupp_df)


# %% Ensure balance equality (no commodity left at shipped/piped level)
def ensure_balance_equality(scen: message_ix.Scenario, log, covered_tec):
"""
Ensure that there is no leftover shipped/piped commodity
"""
log.info("Remove import/export balance equality sets")
be_rem = scen.set("balance_equality")
be_rem = be_rem[
(be_rem["level"].str.contains("import"))
| (be_rem["level"].str.contains("export"))
]
with scen.transact("remove balance equality for import/export"):
scen.remove_set("balance_equality", be_rem)

log.info("Add balance equality sets")
be_df = scen.par("output")
for tec in covered_tec:
log.info(f"---Add {tec}")
tecdf = be_df[be_df["technology"].str.contains(tec)].copy()
comdf = tecdf[["commodity", "level"]].drop_duplicates()
comdf = comdf[comdf["level"].isin(["piped", "shipped"])].drop_duplicates()

with scen.transact(f"add balance equality sets for {tec}"):
scen.add_set("balance_equality", comdf)


# %% Write just the GDX files
def save_to_gdx(mp: ixmp.Platform, scenario, output_path: str):
"""
Expand Down Expand Up @@ -423,6 +449,9 @@ def load_and_solve(
# Remove PAO coal and gas constraints on MESSAGEix-GLOBIOM
remove_pao_coal_constraint(scen=scen, log=log, MESSAGEix_GLOBIOM=MESSAGEix_GLOBIOM)

# Ensure balance equality
ensure_balance_equality(scen=scen, log=log, covered_tec=covered_tec)

# Solve or save scenario
solve_or_save(
mp=mp,
Expand Down
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