PLEXOS battery inventory: what's shipped, buildable, and in ExportGroup constraints

[nick-gorman]

What this issue is

A side-by-side inventory of every battery PLEXOS ships in the
Draft 2026 ISP Step Change Model.xml against the batteries IASR ships
for the equivalent 7.5 workbook. The IASR side is drawn from two
workbook tables: new_entrants_summary (the 1h/2h/4h/8h + Distributed
Resources batteries) and consumer_energy_resources_summary (the
Coordinated CER Storages and V2G batteries, Fuel type == Battery).

Two tables follow — one for REZ-level batteries (keyed by REZ ID +
duration), one for sub-region-level batteries (keyed by sub-region +
duration). Each row shows the IASR name, the PLEXOS name, which IASR
table the match came from, the PLEXOS Max Units Built value, and
which ExportGroup_* constraints (if any) the PLEXOS object is a
member of.

The headline of why this exists: working through the custom-constraints
templater turned up several non-obvious choices in how PLEXOS represents
batteries (multiple LP variables per physical battery, most with
Max Units Built = 0; 4h variants present as objects but absent from
the export constraints; CER/V2G batteries that live in a separate IASR
table ISPyPSA doesn't currently template). This is a static record of
those facts that other workstreams can refer back to.

Key findings

LP variable counts:

• PLEXOS ships 416 Battery objects in total. 174 are existing /
  committed plants (or other non-new-entrant batteries) — these mostly
  have Max Units Built "Not set" or 0 because they're already built,
  not because they're non-buildable variants; they still carry their
  existing capacity.
• The remaining 242 are new-entrant battery LP variables (REZ-named,
  sub-region-named, and constraint-scoped variants). Only 39 of the
  242 have Max Units Built > 0 (can be built); 136 are Max = 0
  and 67 are "Not set". PLEXOS creates several parallel LP variables per
  physical new-entrant battery — e.g. a buildable sub-region-named
  variant plus a Max = 0 constraint-scoped variant that sits inside
  the export constraint — so most new-entrant variants are LP variables
  that can never carry built capacity.

REZ-named (Q1 Battery - 2h style) batteries:

• IASR ships 3 batteries per REZ (2h/4h/8h) across all 42 REZ IDs.
• PLEXOS ships matching objects for all but V3 (no V3 Battery - *
  exists in the PLEXOS XML, despite IASR carrying it).
• Of the 114 REZ-named PLEXOS Battery objects (the standard
  Q/N/S/T/V REZs; the DN1/DN2/DN3 group is counted separately),
  only 10 are buildable (Max Units Built > 0), and those sit on
  just 6 REZ IDs (N2, N3, N5, N9, Q4, T3). Every other
  REZ ID's 2h and 8h objects are Max = 0 and all 4h objects are
  "Not set" — i.e. for the other ~32 REZ IDs, no REZ-named battery can
  be built at all.
• Every REZ-named 4h variant has Max Units Built "Not set" and
  is absent from every ExportGroup_* constraint. The PLEXOS default
  behaviour for unset Max Units Built is not confirmed (see open
  questions); could be "unlimited" or "0".
• REZ-named batteries that DO appear in ExportGroup_* constraints
  are exclusively 2h and 8h — none at 4h. Examples:
  Q1 Battery - 2h/8h in ExportGroup_NQ1; Q4 Battery - 2h/8h in
  ExportGroup_CQ1; S5/S7/S8 Battery - 2h/8h in ExportGroup_NSA1;
  etc.

Sub-region-named (SQ Battery - 2h style) batteries:

• IASR ships 4-5 variants per sub-region (1h, 2h, 4h, 8h, plus a
  Distributed Resources entry) across all 15 sub-regions.
• PLEXOS' sub-region-named buildability varies widely by sub-region:
  • Fully buildable at 2h/4h/8h: CSA, MEL, SNW. (CSA also at
    Distributed Resources: 0, but the four named durations are 50000.)
  • Partially buildable: NSA (2h+8h=50000, 4h=0), SQ
    (2h+4h=50000, 8h=0), NQ (4h only), GG (4h only), CNSW
    (4h+8h+DR=50000), NNSW (8h only), SNSW (8h only), TAS (4h only),
    WNV (4h only).
  • All-zero (no buildable sub-region-named variant at any
    duration): CQ, SESA, SEV (sub-region-named only — see
    constraint-scoped variants below).

Constraint-scoped variants (SWQLD1 Battery - 2h style) — the seven
groups:

• Seven constraint-scoped prefixes (SWQLD1, SQ1, MN1, NSA1,
  NET1, SEVIC1, SWV1) each shipping objects at 2h, 4h, and 8h.
  The 2h and 8h are members of the matching ExportGroup_*
  constraint; the 4h is not in any export constraint.
• All 2h constraint-scoped variants have Max Units Built = 0. The 8h
  side varies — see the sub-region table for full per-group values.
  Summary of the four patterns observed:
  • SWQLD1, SQ1 — 8h constraint-scoped Max=50000, sub-region-named
    8h Max=0.
  • MN1, NSA1 — 8h constraint-scoped Max=50000, sub-region-named 8h
    Max=50000 (both buildable, only the constraint-scoped one is in the
    constraint).
  • SEVIC1 — 8h constraint-scoped Max=0, sub-region-named 8h
    Max=50000.
  • NET1, SWV1 — 8h constraint-scoped Max=0, sub-region-named 8h
    Max=0 (nothing buildable on either variant at either duration).
• All 4h constraint-scoped variants have Max Units Built "Not set".

CER / V2G batteries (in the CER table, not new_entrants_summary):

• <sub-region> Battery - Coordinated CER Storages Area* (one per
  sub-region, sometimes two — MEL, SNSW, SNW, WNV) and <sub-region> V2G Area* (one per sub-region, sometimes two). All have
  Max Units Built "Not set" and none are in ExportGroup_*.
• These are in IASR — in consumer_energy_resources_summary
  (Fuel type == Battery), keyed by sub-region with no duration. They
  are NOT in new_entrants_summary, so they only show up as matches
  here because this comparison loads the CER table too.
• ISPyPSA doesn't currently template the CER table
  (CER units participate in custom constraints — revisit name-matching when CER new entrants are added #104), so the custom-constraints templater can't
  resolve them and drops the constraint-side references — but the gap is
  "CER table not templated", not "missing from IASR".

IASR-only entries (no PLEXOS Battery counterpart):

• The V3 REZ's 2h/4h/8h batteries appear in IASR but no PLEXOS
  V3 Battery - * object exists. Reason unclear; flagged as a sample
  for AEMO clarification.

Column legend for both tables below: IASR source names the workbook
table the match came from (new entrants = new_entrants_summary;
CER = consumer_energy_resources_summary; — = no match on that
side). PLEXOS Max Units Built shows Not set when the property is
absent on the PLEXOS object (distinct from an explicit 0). — in the
name columns = no counterpart on that side.

REZ-level batteries

REZ ID	Duration	IASR name	PLEXOS name	IASR source	PLEXOS Max Units Built	PLEXOS ExportGroup membership
DN1	2h	DREZ Dubbo Battery - 2h	DN1 Dubbo Battery - 2h	new entrants	0	CNSW1
DN1	4h	DREZ Dubbo Battery - 4h	DN1 Dubbo Battery - 4h	new entrants	Not set	CNSW1
DN1	8h	DREZ Dubbo Battery - 8h	DN1 Dubbo Battery - 8h	new entrants	50000	CNSW1
DN2	2h	DREZ Yass Battery - 2h	DN2 Yass Battery - 2h	new entrants	0	(no ExportGroup)
DN2	4h	DREZ Yass Battery - 4h	DN2 Yass Battery - 4h	new entrants	Not set	(no ExportGroup)
DN2	8h	DREZ Yass Battery - 8h	DN2 Yass Battery - 8h	new entrants	0	(no ExportGroup)
DN3	2h	DREZ Marulan Battery - 2h	DN3 Marulan Battery - 2h	new entrants	0	(no ExportGroup)
DN3	4h	DREZ Marulan Battery - 4h	DN3 Marulan Battery - 4h	new entrants	Not set	(no ExportGroup)
DN3	8h	DREZ Marulan Battery - 8h	DN3 Marulan Battery - 8h	new entrants	0	(no ExportGroup)
N1	2h	N1 Battery - 2h	N1 Battery - 2h	new entrants	0	(no ExportGroup)
N1	4h	N1 Battery - 4h	N1 Battery - 4h	new entrants	Not set	(no ExportGroup)
N1	8h	N1 Battery - 8h	N1 Battery - 8h	new entrants	0	(no ExportGroup)
N12	2h	N12 Battery - 2h	N12 Battery - 2h	new entrants	0	(no ExportGroup)
N12	4h	N12 Battery - 4h	N12 Battery - 4h	new entrants	Not set	(no ExportGroup)
N12	8h	N12 Battery - 8h	N12 Battery - 8h	new entrants	0	(no ExportGroup)
N13	2h	N13 Battery - 2h	N13 Battery - 2h	new entrants	0	SWNSW2
N13	4h	N13 Battery - 4h	N13 Battery - 4h	new entrants	Not set	(no ExportGroup)
N13	8h	N13 Battery - 8h	N13 Battery - 8h	new entrants	0	SWNSW2
N2	2h	N2 Battery - 2h	N2 Battery - 2h	new entrants	50000	(no ExportGroup)
N2	4h	N2 Battery - 4h	N2 Battery - 4h	new entrants	Not set	(no ExportGroup)
N2	8h	N2 Battery - 8h	N2 Battery - 8h	new entrants	50000	(no ExportGroup)
N3	2h	N3 Battery - 2h	N3 Battery - 2h	new entrants	50000	(no ExportGroup)
N3	4h	N3 Battery - 4h	N3 Battery - 4h	new entrants	Not set	(no ExportGroup)
N3	8h	N3 Battery - 8h	N3 Battery - 8h	new entrants	0	(no ExportGroup)
N4	2h	N4 Battery - 2h	N4 Battery - 2h	new entrants	0	SWNSW2
N4	4h	N4 Battery - 4h	N4 Battery - 4h	new entrants	Not set	(no ExportGroup)
N4	8h	N4 Battery - 8h	N4 Battery - 8h	new entrants	0	SWNSW2
N5	2h	N5 Battery - 2h	N5 Battery - 2h	new entrants	50000	SWNSW2
N5	4h	N5 Battery - 4h	N5 Battery - 4h	new entrants	Not set	(no ExportGroup)
N5	8h	N5 Battery - 8h	N5 Battery - 8h	new entrants	50000	SWNSW2
N6	2h	N6 Battery - 2h	N6 Battery - 2h	new entrants	0	(no ExportGroup)
N6	4h	N6 Battery - 4h	N6 Battery - 4h	new entrants	Not set	(no ExportGroup)
N6	8h	N6 Battery - 8h	N6 Battery - 8h	new entrants	0	(no ExportGroup)
N7	2h	N7 Battery - 2h	N7 Battery - 2h	new entrants	0	(no ExportGroup)
N7	4h	N7 Battery - 4h	N7 Battery - 4h	new entrants	Not set	(no ExportGroup)
N7	8h	N7 Battery - 8h	N7 Battery - 8h	new entrants	0	(no ExportGroup)
N8	2h	N8 Battery - 2h	N8 Battery - 2h	new entrants	0	(no ExportGroup)
N8	4h	N8 Battery - 4h	N8 Battery - 4h	new entrants	Not set	(no ExportGroup)
N8	8h	N8 Battery - 8h	N8 Battery - 8h	new entrants	0	(no ExportGroup)
N9	2h	N9 Battery - 2h	N9 Battery - 2h	new entrants	50000	N9_Hydrogen
N9	4h	N9 Battery - 4h	N9 Battery - 4h	new entrants	Not set	(no ExportGroup)
N9	8h	N9 Battery - 8h	N9 Battery - 8h	new entrants	50000	N9_Hydrogen
Q1	2h	Q1 Battery - 2h	Q1 Battery - 2h	new entrants	0	NQ1, Q1_Hydrogen
Q1	4h	Q1 Battery - 4h	Q1 Battery - 4h	new entrants	Not set	(no ExportGroup)
Q1	8h	Q1 Battery - 8h	Q1 Battery - 8h	new entrants	0	NQ1, Q1_Hydrogen
Q10	2h	Q10 Battery - 2h	Q10 Battery - 2h	new entrants	0	(no ExportGroup)
Q10	4h	Q10 Battery - 4h	Q10 Battery - 4h	new entrants	Not set	(no ExportGroup)
Q10	8h	Q10 Battery - 8h	Q10 Battery - 8h	new entrants	0	(no ExportGroup)
Q2	2h	Q2 Battery - 2h	Q2 Battery - 2h	new entrants	0	NQ1
Q2	4h	Q2 Battery - 4h	Q2 Battery - 4h	new entrants	Not set	(no ExportGroup)
Q2	8h	Q2 Battery - 8h	Q2 Battery - 8h	new entrants	0	NQ1
Q3	2h	Q3 Battery - 2h	Q3 Battery - 2h	new entrants	0	NQ1
Q3	4h	Q3 Battery - 4h	Q3 Battery - 4h	new entrants	Not set	(no ExportGroup)
Q3	8h	Q3 Battery - 8h	Q3 Battery - 8h	new entrants	0	NQ1
Q4	2h	Q4 Battery - 2h	Q4 Battery - 2h	new entrants	0	CQ1, Q4_Hydrogen
Q4	4h	Q4 Battery - 4h	Q4 Battery - 4h	new entrants	Not set	(no ExportGroup)
Q4	8h	Q4 Battery - 8h	Q4 Battery - 8h	new entrants	50000	CQ1, Q4_Hydrogen
Q5	2h	Q5 Battery - 2h	Q5 Battery - 2h	new entrants	0	(no ExportGroup)
Q5	4h	Q5 Battery - 4h	Q5 Battery - 4h	new entrants	Not set	(no ExportGroup)
Q5	8h	Q5 Battery - 8h	Q5 Battery - 8h	new entrants	0	(no ExportGroup)
Q6	2h	Q6 Battery - 2h	Q6 Battery - 2h	new entrants	0	(no ExportGroup)
Q6	4h	Q6 Battery - 4h	Q6 Battery - 4h	new entrants	Not set	(no ExportGroup)
Q6	8h	Q6 Battery - 8h	Q6 Battery - 8h	new entrants	0	(no ExportGroup)
Q7	2h	Q7 Battery - 2h	Q7 Battery - 2h	new entrants	0	Q7_Hydrogen, SQ1
Q7	4h	Q7 Battery - 4h	Q7 Battery - 4h	new entrants	Not set	(no ExportGroup)
Q7	8h	Q7 Battery - 8h	Q7 Battery - 8h	new entrants	0	Q7_Hydrogen, SQ1
Q8	2h	Q8 Battery - 2h	Q8 Battery - 2h	new entrants	0	SQ1, SWQLD1
Q8	4h	Q8 Battery - 4h	Q8 Battery - 4h	new entrants	Not set	(no ExportGroup)
Q8	8h	Q8 Battery - 8h	Q8 Battery - 8h	new entrants	0	SQ1, SWQLD1
Q9	2h	Q9 Battery - 2h	Q9 Battery - 2h	new entrants	0	(no ExportGroup)
Q9	4h	Q9 Battery - 4h	Q9 Battery - 4h	new entrants	Not set	(no ExportGroup)
Q9	8h	Q9 Battery - 8h	Q9 Battery - 8h	new entrants	0	(no ExportGroup)
S1	2h	S1 Battery - 2h	S1 Battery - 2h	new entrants	0	(no ExportGroup)
S1	4h	S1 Battery - 4h	S1 Battery - 4h	new entrants	Not set	(no ExportGroup)
S1	8h	S1 Battery - 8h	S1 Battery - 8h	new entrants	0	(no ExportGroup)
S2	2h	S2 Battery - 2h	S2 Battery - 2h	new entrants	0	(no ExportGroup)
S2	4h	S2 Battery - 4h	S2 Battery - 4h	new entrants	Not set	(no ExportGroup)
S2	8h	S2 Battery - 8h	S2 Battery - 8h	new entrants	0	(no ExportGroup)
S3	2h	S3 Battery - 2h	S3 Battery - 2h	new entrants	0	MN1
S3	4h	S3 Battery - 4h	S3 Battery - 4h	new entrants	Not set	(no ExportGroup)
S3	8h	S3 Battery - 8h	S3 Battery - 8h	new entrants	0	MN1
S4	2h	S4 Battery - 2h	S4 Battery - 2h	new entrants	0	MN1
S4	4h	S4 Battery - 4h	S4 Battery - 4h	new entrants	Not set	(no ExportGroup)
S4	8h	S4 Battery - 8h	S4 Battery - 8h	new entrants	0	MN1
S5	2h	S5 Battery - 2h	S5 Battery - 2h	new entrants	0	NSA1, NSA1 North
S5	4h	S5 Battery - 4h	S5 Battery - 4h	new entrants	Not set	(no ExportGroup)
S5	8h	S5 Battery - 8h	S5 Battery - 8h	new entrants	0	NSA1, NSA1 North
S6	2h	S6 Battery - 2h	S6 Battery - 2h	new entrants	0	(no ExportGroup)
S6	4h	S6 Battery - 4h	S6 Battery - 4h	new entrants	Not set	(no ExportGroup)
S6	8h	S6 Battery - 8h	S6 Battery - 8h	new entrants	0	(no ExportGroup)
S7	2h	S7 Battery - 2h	S7 Battery - 2h	new entrants	0	NSA1, NSA1 North
S7	4h	S7 Battery - 4h	S7 Battery - 4h	new entrants	Not set	(no ExportGroup)
S7	8h	S7 Battery - 8h	S7 Battery - 8h	new entrants	0	NSA1, NSA1 North
S8	2h	S8 Battery - 2h	S8 Battery - 2h	new entrants	0	NSA1, NSA1 North
S8	4h	S8 Battery - 4h	S8 Battery - 4h	new entrants	Not set	(no ExportGroup)
S8	8h	S8 Battery - 8h	S8 Battery - 8h	new entrants	0	NSA1, NSA1 North
T1	2h	T1 Battery - 2h	T1 Battery - 2h	new entrants	0	NET1
T1	4h	T1 Battery - 4h	T1 Battery - 4h	new entrants	Not set	(no ExportGroup)
T1	8h	T1 Battery - 8h	T1 Battery - 8h	new entrants	0	NET1
T2	2h	T2 Battery - 2h	T2 Battery - 2h	new entrants	0	(no ExportGroup)
T2	4h	T2 Battery - 4h	T2 Battery - 4h	new entrants	Not set	(no ExportGroup)
T2	8h	T2 Battery - 8h	T2 Battery - 8h	new entrants	0	(no ExportGroup)
T3	2h	T3 Battery - 2h	T3 Battery - 2h	new entrants	50000	(no ExportGroup)
T3	4h	T3 Battery - 4h	T3 Battery - 4h	new entrants	Not set	(no ExportGroup)
T3	8h	T3 Battery - 8h	T3 Battery - 8h	new entrants	50000	(no ExportGroup)
V1	2h	V1 Battery - 2h	V1 Battery - 2h	new entrants	0	(no ExportGroup)
V1	4h	V1 Battery - 4h	V1 Battery - 4h	new entrants	Not set	(no ExportGroup)
V1	8h	V1 Battery - 8h	V1 Battery - 8h	new entrants	0	(no ExportGroup)
V2	2h	V2 Battery - 2h	V2 Battery - 2h	new entrants	0	(no ExportGroup)
V2	4h	V2 Battery - 4h	V2 Battery - 4h	new entrants	Not set	(no ExportGroup)
V2	8h	V2 Battery - 8h	V2 Battery - 8h	new entrants	0	(no ExportGroup)
V3	2h	V3 Battery - 2h	—	new entrants	Not set	—
V3	4h	V3 Battery - 4h	—	new entrants	Not set	—
V3	8h	V3 Battery - 8h	—	new entrants	Not set	—
V4	2h	V4 Battery - 2h	V4 Battery - 2h	new entrants	0	WV1
V4	4h	V4 Battery - 4h	V4 Battery - 4h	new entrants	Not set	(no ExportGroup)
V4	8h	V4 Battery - 8h	V4 Battery - 8h	new entrants	0	WV1
V5	2h	V5 Battery - 2h	V5 Battery - 2h	new entrants	0	SWV1
V5	4h	V5 Battery - 4h	V5 Battery - 4h	new entrants	Not set	(no ExportGroup)
V5	8h	V5 Battery - 8h	V5 Battery - 8h	new entrants	0	SWV1
V6	2h	V6 Battery - 2h	V6 Battery - 2h	new entrants	0	(no ExportGroup)
V6	4h	V6 Battery - 4h	V6 Battery - 4h	new entrants	Not set	(no ExportGroup)
V6	8h	V6 Battery - 8h	V6 Battery - 8h	new entrants	0	(no ExportGroup)
V7	2h	V7 Battery - 2h	V7 Battery - 2h	new entrants	0	WNV1
V7	4h	V7 Battery - 4h	V7 Battery - 4h	new entrants	Not set	(no ExportGroup)
V7	8h	V7 Battery - 8h	V7 Battery - 8h	new entrants	0	WNV1

Sub-region-level batteries

Includes the seven constraint-scoped prefix groups (SWQLD1/SQ1/MN1/NSA1/NET1/SEVIC1/SWV1) since their IASR counterparts are at sub-region level, plus the Coordinated CER Storages and V2G batteries from the CER table.

Sub-region	Duration	IASR name	PLEXOS name	IASR source	PLEXOS Max Units Built	PLEXOS ExportGroup membership
CNSW	1h	CNSW Battery - 1h	CNSW Battery - 1h	new entrants	0	(no ExportGroup)
CNSW	2h	CNSW Battery - 2h	CNSW Battery - 2h	new entrants	0	(no ExportGroup)
CNSW	4h	CNSW Battery - 4h	CNSW Battery - 4h	new entrants	50000	(no ExportGroup)
CNSW	8h	CNSW Battery - 8h	CNSW Battery - 8h	new entrants	50000	(no ExportGroup)
CNSW	Coordinated CER Storages	CNSW Battery - Coordinated CER Storages	CNSW Battery - Coordinated CER Storages Area1	CER	Not set	(no ExportGroup)
CNSW	Distributed Resources	CNSW Battery - Distributed Resources	CNSW Battery - Distributed Resources Area1	new entrants	13675	(no ExportGroup)
CNSW	V2G	CNSW V2G	CNSW V2G Area1	CER	Not set	(no ExportGroup)
CQ	1h	CQ Battery - 1h	CQ Battery - 1h	new entrants	0	(no ExportGroup)
CQ	2h	CQ Battery - 2h	CQ Battery - 2h	new entrants	0	(no ExportGroup)
CQ	4h	CQ Battery - 4h	CQ Battery - 4h	new entrants	0	(no ExportGroup)
CQ	8h	CQ Battery - 8h	CQ Battery - 8h	new entrants	0	(no ExportGroup)
CQ	Coordinated CER Storages	CQ Battery - Coordinated CER Storages	CQ Battery - Coordinated CER Storages Area1	CER	Not set	(no ExportGroup)
CQ	Distributed Resources	CQ Battery - Distributed Resources	CQ Battery - Distributed Resources Area1	new entrants	0	(no ExportGroup)
CQ	V2G	CQ V2G	CQ V2G Area1	CER	Not set	(no ExportGroup)
CSA	1h	CSA Battery - 1h	CSA Battery - 1h	new entrants	0	(no ExportGroup)
CSA	2h	CSA Battery - 2h	CSA Battery - 2h	new entrants	50000	(no ExportGroup)
CSA	2h	CSA Battery - 2h	MN1 Battery - 2h	new entrants	0	MN1
CSA	4h	CSA Battery - 4h	CSA Battery - 4h	new entrants	50000	(no ExportGroup)
CSA	4h	CSA Battery - 4h	MN1 Battery - 4h	new entrants	Not set	(no ExportGroup)
CSA	8h	CSA Battery - 8h	CSA Battery - 8h	new entrants	50000	(no ExportGroup)
CSA	8h	CSA Battery - 8h	MN1 Battery - 8h	new entrants	50000	MN1
CSA	Coordinated CER Storages	CSA Battery - Coordinated CER Storages	CSA Battery - Coordinated CER Storages Area1	CER	Not set	(no ExportGroup)
CSA	Distributed Resources	CSA Battery - Distributed Resources	CSA Battery - Distributed Resources Area1	new entrants	0	(no ExportGroup)
CSA	V2G	CSA V2G	CSA V2G Area1	CER	Not set	(no ExportGroup)
GG	1h	GG Battery - 1h	GG Battery - 1h	new entrants	0	(no ExportGroup)
GG	2h	GG Battery - 2h	GG Battery - 2h	new entrants	0	(no ExportGroup)
GG	4h	GG Battery - 4h	GG Battery - 4h	new entrants	50000	(no ExportGroup)
GG	8h	GG Battery - 8h	GG Battery - 8h	new entrants	0	(no ExportGroup)
GG	Coordinated CER Storages	GG Battery - Coordinated CER Storages	GG Battery - Coordinated CER Storages Area1	CER	Not set	(no ExportGroup)
GG	Distributed Resources	GG Battery - Distributed Resources	GG Battery - Distributed Resources Area1	new entrants	2370	(no ExportGroup)
GG	V2G	GG V2G	GG V2G Area1	CER	Not set	(no ExportGroup)
MEL	1h	MEL Battery - 1h	MEL Battery - 1h	new entrants	0	(no ExportGroup)
MEL	2h	MEL Battery - 2h	MEL Battery - 2h	new entrants	50000	(no ExportGroup)
MEL	4h	MEL Battery - 4h	MEL Battery - 4h	new entrants	50000	(no ExportGroup)
MEL	8h	MEL Battery - 8h	MEL Battery - 8h	new entrants	50000	(no ExportGroup)
MEL	Coordinated CER Storages	MEL Battery - Coordinated CER Storages	MEL Battery - Coordinated CER Storages Area1	CER	Not set	(no ExportGroup)
MEL	Coordinated CER Storages	MEL Battery - Coordinated CER Storages	MEL Battery - Coordinated CER Storages Area2	CER	Not set	(no ExportGroup)
MEL	Distributed Resources	MEL Battery - Distributed Resources	MEL Battery - Distributed Resources Area1	new entrants	0	(no ExportGroup)
MEL	Distributed Resources	MEL Battery - Distributed Resources	MEL Battery - Distributed Resources Area2	new entrants	0	(no ExportGroup)
MEL	V2G	MEL V2G	MEL V2G Area1	CER	Not set	(no ExportGroup)
MEL	V2G	MEL V2G	MEL V2G Area2	CER	Not set	(no ExportGroup)
NNSW	1h	NNSW Battery - 1h	NNSW Battery - 1h	new entrants	0	(no ExportGroup)
NNSW	2h	NNSW Battery - 2h	NNSW Battery - 2h	new entrants	0	(no ExportGroup)
NNSW	4h	NNSW Battery - 4h	NNSW Battery - 4h	new entrants	0	(no ExportGroup)
NNSW	8h	NNSW Battery - 8h	NNSW Battery - 8h	new entrants	50000	(no ExportGroup)
NNSW	Coordinated CER Storages	NNSW Battery - Coordinated CER Storages	NNSW Battery - Coordinated CER Storages Area1	CER	Not set	(no ExportGroup)
NNSW	Distributed Resources	NNSW Battery - Distributed Resources	NNSW Battery - Distributed Resources Area1	new entrants	0	(no ExportGroup)
NNSW	V2G	NNSW V2G	NNSW V2G Area1	CER	Not set	(no ExportGroup)
NQ	1h	NQ Battery - 1h	NQ Battery - 1h	new entrants	0	(no ExportGroup)
NQ	2h	NQ Battery - 2h	NQ Battery - 2h	new entrants	0	(no ExportGroup)
NQ	4h	NQ Battery - 4h	NQ Battery - 4h	new entrants	50000	(no ExportGroup)
NQ	8h	NQ Battery - 8h	NQ Battery - 8h	new entrants	0	(no ExportGroup)
NQ	Coordinated CER Storages	NQ Battery - Coordinated CER Storages	NQ Battery - Coordinated CER Storages Area1	CER	Not set	(no ExportGroup)
NQ	Distributed Resources	NQ Battery - Distributed Resources	NQ Battery - Distributed Resources Area1	new entrants	0	(no ExportGroup)
NQ	V2G	NQ V2G	NQ V2G Area1	CER	Not set	(no ExportGroup)
NSA	1h	NSA Battery - 1h	NSA Battery - 1h	new entrants	0	(no ExportGroup)
NSA	2h	NSA Battery - 2h	NSA Battery - 2h	new entrants	50000	(no ExportGroup)
NSA	2h	NSA Battery - 2h	NSA1 Battery - 2h	new entrants	0	NSA1
NSA	4h	NSA Battery - 4h	NSA Battery - 4h	new entrants	0	(no ExportGroup)
NSA	4h	NSA Battery - 4h	NSA1 Battery - 4h	new entrants	Not set	(no ExportGroup)
NSA	8h	NSA Battery - 8h	NSA Battery - 8h	new entrants	50000	(no ExportGroup)
NSA	8h	NSA Battery - 8h	NSA1 Battery - 8h	new entrants	50000	NSA1
NSA	Coordinated CER Storages	NSA Battery - Coordinated CER Storages	NSA Battery - Coordinated CER Storages Area1	CER	Not set	(no ExportGroup)
NSA	Distributed Resources	NSA Battery - Distributed Resources	NSA Battery - Distributed Resources Area1	new entrants	0	(no ExportGroup)
NSA	V2G	NSA V2G	NSA V2G Area1	CER	Not set	(no ExportGroup)
SESA	1h	SESA Battery - 1h	SESA Battery - 1h	new entrants	0	(no ExportGroup)
SESA	2h	SESA Battery - 2h	SESA Battery - 2h	new entrants	0	(no ExportGroup)
SESA	4h	SESA Battery - 4h	SESA Battery - 4h	new entrants	0	(no ExportGroup)
SESA	8h	SESA Battery - 8h	SESA Battery - 8h	new entrants	0	(no ExportGroup)
SESA	Coordinated CER Storages	SESA Battery - Coordinated CER Storages	SESA Battery - Coordinated CER Storages Area1	CER	Not set	(no ExportGroup)
SESA	Distributed Resources	SESA Battery - Distributed Resources	SESA Battery - Distributed Resources Area1	new entrants	0	(no ExportGroup)
SESA	V2G	SESA V2G	SESA V2G Area1	CER	Not set	(no ExportGroup)
SEV	1h	SEV Battery - 1h	SEV Battery - 1h	new entrants	0	(no ExportGroup)
SEV	2h	SEV Battery - 2h	SEV Battery - 2h	new entrants	0	(no ExportGroup)
SEV	2h	SEV Battery - 2h	SEVIC1 Battery - 2h	new entrants	0	SEVIC1
SEV	4h	SEV Battery - 4h	SEV Battery - 4h	new entrants	0	(no ExportGroup)
SEV	4h	SEV Battery - 4h	SEVIC1 Battery - 4h	new entrants	Not set	(no ExportGroup)
SEV	8h	SEV Battery - 8h	SEV Battery - 8h	new entrants	50000	(no ExportGroup)
SEV	8h	SEV Battery - 8h	SEVIC1 Battery - 8h	new entrants	0	SEVIC1
SEV	Coordinated CER Storages	SEV Battery - Coordinated CER Storages	SEV Battery - Coordinated CER Storages Area1	CER	Not set	(no ExportGroup)
SEV	Distributed Resources	SEV Battery - Distributed Resources	SEV Battery - Distributed Resources Area1	new entrants	0	(no ExportGroup)
SEV	V2G	SEV V2G	SEV V2G Area1	CER	Not set	(no ExportGroup)
SNSW	1h	SNSW Battery - 1h	SNSW Battery - 1h	new entrants	0	(no ExportGroup)
SNSW	2h	SNSW Battery - 2h	SNSW Battery - 2h	new entrants	0	(no ExportGroup)
SNSW	4h	SNSW Battery - 4h	SNSW Battery - 4h	new entrants	0	(no ExportGroup)
SNSW	8h	SNSW Battery - 8h	SNSW Battery - 8h	new entrants	50000	(no ExportGroup)
SNSW	Coordinated CER Storages	SNSW Battery - Coordinated CER Storages	SNSW Battery - Coordinated CER Storages Area1	CER	Not set	(no ExportGroup)
SNSW	Coordinated CER Storages	SNSW Battery - Coordinated CER Storages	SNSW Battery - Coordinated CER Storages Area2	CER	Not set	(no ExportGroup)
SNSW	Distributed Resources	SNSW Battery - Distributed Resources	SNSW Battery - Distributed Resources Area1	new entrants	0	(no ExportGroup)
SNSW	Distributed Resources	SNSW Battery - Distributed Resources	SNSW Battery - Distributed Resources Area2	new entrants	0	(no ExportGroup)
SNSW	V2G	SNSW V2G	SNSW V2G Area1	CER	Not set	(no ExportGroup)
SNSW	V2G	SNSW V2G	SNSW V2G Area2	CER	Not set	(no ExportGroup)
SNW	1h	SNW Battery - 1h	SNW Battery - 1h	new entrants	0	(no ExportGroup)
SNW	2h	SNW Battery - 2h	SNW Battery - 2h	new entrants	50000	(no ExportGroup)
SNW	4h	SNW Battery - 4h	SNW Battery - 4h	new entrants	50000	(no ExportGroup)
SNW	8h	SNW Battery - 8h	SNW Battery - 8h	new entrants	50000	(no ExportGroup)
SNW	Coordinated CER Storages	SNW Battery - Coordinated CER Storages	SNW Battery - Coordinated CER Storages Area1	CER	Not set	(no ExportGroup)
SNW	Coordinated CER Storages	SNW Battery - Coordinated CER Storages	SNW Battery - Coordinated CER Storages Area2	CER	Not set	(no ExportGroup)
SNW	Distributed Resources	SNW Battery - Distributed Resources	SNW Battery - Distributed Resources Area1	new entrants	0	(no ExportGroup)
SNW	Distributed Resources	SNW Battery - Distributed Resources	SNW Battery - Distributed Resources Area2	new entrants	0	(no ExportGroup)
SNW	V2G	SNW V2G	SNW V2G Area1	CER	Not set	(no ExportGroup)
SNW	V2G	SNW V2G	SNW V2G Area2	CER	Not set	(no ExportGroup)
SQ	1h	SQ Battery - 1h	SQ Battery - 1h	new entrants	0	(no ExportGroup)
SQ	2h	SQ Battery - 2h	SQ Battery - 2h	new entrants	50000	(no ExportGroup)
SQ	2h	SQ Battery - 2h	SQ1 Battery - 2h	new entrants	0	SQ1
SQ	2h	SQ Battery - 2h	SWQLD1 Battery - 2h	new entrants	0	SWQLD1
SQ	4h	SQ Battery - 4h	SQ Battery - 4h	new entrants	50000	(no ExportGroup)
SQ	4h	SQ Battery - 4h	SQ1 Battery - 4h	new entrants	Not set	(no ExportGroup)
SQ	4h	SQ Battery - 4h	SWQLD1 Battery - 4h	new entrants	Not set	(no ExportGroup)
SQ	8h	SQ Battery - 8h	SQ Battery - 8h	new entrants	0	(no ExportGroup)
SQ	8h	SQ Battery - 8h	SQ1 Battery - 8h	new entrants	50000	SQ1
SQ	8h	SQ Battery - 8h	SWQLD1 Battery - 8h	new entrants	50000	SWQLD1
SQ	Coordinated CER Storages	SQ Battery - Coordinated CER Storages	SQ Battery - Coordinated CER Storages Area1	CER	Not set	(no ExportGroup)
SQ	Distributed Resources	SQ Battery - Distributed Resources	SQ Battery - Distributed Resources Area1	new entrants	0	(no ExportGroup)
SQ	V2G	SQ V2G	SQ V2G Area1	CER	Not set	(no ExportGroup)
TAS	1h	TAS Battery - 1h	TAS Battery - 1h	new entrants	0	(no ExportGroup)
TAS	2h	TAS Battery - 2h	NET1 Battery - 2h	new entrants	0	NET1
TAS	2h	TAS Battery - 2h	TAS Battery - 2h	new entrants	0	(no ExportGroup)
TAS	4h	TAS Battery - 4h	NET1 Battery - 4h	new entrants	Not set	(no ExportGroup)
TAS	4h	TAS Battery - 4h	TAS Battery - 4h	new entrants	50000	(no ExportGroup)
TAS	8h	TAS Battery - 8h	NET1 Battery - 8h	new entrants	0	NET1
TAS	8h	TAS Battery - 8h	TAS Battery - 8h	new entrants	0	(no ExportGroup)
TAS	Coordinated CER Storages	TAS Battery - Coordinated CER Storages	TAS Battery - Coordinated CER Storages Area1	CER	Not set	(no ExportGroup)
TAS	Distributed Resources	TAS Battery - Distributed Resources	TAS Battery - Distributed Resources Area1	new entrants	0	(no ExportGroup)
TAS	V2G	TAS V2G	TAS V2G Area1	CER	Not set	(no ExportGroup)
WNV	1h	WNV Battery - 1h	WNV Battery - 1h	new entrants	0	(no ExportGroup)
WNV	2h	WNV Battery - 2h	SWV1 Battery - 2h	new entrants	0	SWV1
WNV	2h	WNV Battery - 2h	WNV Battery - 2h	new entrants	0	(no ExportGroup)
WNV	4h	WNV Battery - 4h	SWV1 Battery - 4h	new entrants	Not set	(no ExportGroup)
WNV	4h	WNV Battery - 4h	WNV Battery - 4h	new entrants	50000	(no ExportGroup)
WNV	8h	WNV Battery - 8h	SWV1 Battery - 8h	new entrants	0	SWV1
WNV	8h	WNV Battery - 8h	WNV Battery - 8h	new entrants	0	(no ExportGroup)
WNV	Coordinated CER Storages	WNV Battery - Coordinated CER Storages	WNV Battery - Coordinated CER Storages Area1	CER	Not set	(no ExportGroup)
WNV	Coordinated CER Storages	WNV Battery - Coordinated CER Storages	WNV Battery - Coordinated CER Storages Area2	CER	Not set	(no ExportGroup)
WNV	Distributed Resources	WNV Battery - Distributed Resources	WNV Battery - Distributed Resources Area1	new entrants	0	(no ExportGroup)
WNV	Distributed Resources	WNV Battery - Distributed Resources	WNV Battery - Distributed Resources Area2	new entrants	0	(no ExportGroup)
WNV	V2G	WNV V2G	WNV V2G Area1	CER	Not set	(no ExportGroup)
WNV	V2G	WNV V2G	WNV V2G Area2	CER	Not set	(no ExportGroup)

Open questions

1. What does PLEXOS treat "Not set" Max Units Built as? Every 4h
   variant — across both REZ-named and constraint-scoped batteries —
   has no Max Units Built property explicitly set. PLEXOS' default behaviour
   here isn't documented in the XML; it might be "unlimited build" or
   "0", and the interpretation changes whether those LP variables can
   actually take capacity in PLEXOS' own dispatch. Worth confirming.

2. Why does PLEXOS' export-constraint coverage stop at 2h and 8h?
   The 4h variants exist as Battery objects but aren't members of any
   ExportGroup_* constraint. The 1h and Distributed Resources
   sub-region-named variants also aren't in any export constraint.
   Whether this is a deliberate "shorter durations don't bind on
   sustained-period exports" call or a coverage gap isn't clear from
   the XML.

3. Why does the constraint-scoped set's 8h Max Units Built split
   four ways across the seven groups? SWQLD1/SQ1 carry buildable
   capacity at 8h;
   MN1/NSA1 carry it at 8h and have a parallel buildable sub-region
   variant; SEVIC1 only has buildable capacity on the out-of-constraint
   sub-region 8h; NET1/SWV1 have nothing buildable on either variant
   at either duration. The pattern doesn't follow any obvious physical
   logic.

4. Where is V3 Battery - * in PLEXOS? IASR ships V3 batteries at
   2h, 4h, and 8h but no corresponding PLEXOS object exists. Genuine
   coverage gap or modelled under a different name?

5. CER batteries (Coordinated CER Storages + V2G) live in
   consumer_energy_resources_summary, not new_entrants_summary.
   They match PLEXOS objects one-for-one (modulo the Area* suffix),
   have Max Units Built not set, and aren't in any ExportGroup_*.
   ISPyPSA doesn't currently template the CER table
   (CER units participate in custom constraints — revisit name-matching when CER new entrants are added #104) — so the open item is wiring that table in,
   not a missing-from-IASR data gap.