HELLBENDER · Oahu 37-Bus Test Instance

HELLBENDER power-system instance generator · v0.4 prototype

TEST INSTANCES

OʻAHU 37-BUSsmall · HECO island system · 1.2 GW peak

ERCOT ~2.4k-BUSlarge · Texas interconnection · 85 GW peak

MISO+SPP 24k · requires Hellbender batch node

CLIMATE 2026-09-01

HOUR 19:00

System cost

—

$/MWh SERVED · SYSTEM LEVELIZED

Hourly operating cost—

Daily cost (24 h)—

vs. baseline case—

Energy balance

Total demand—MW

Data-center demand—MW

Generation dispatched—MW

Curtailed—MW

Unserved—MW

Firm reserve margin—%

Renewable share—%

CO₂ emissions—t/h

Dispatch by resource

Network state

Buses / branches—

Max branch loading—%

Branches > 90 %—

Losses (DC approx.)—MW

Slack imbalance—MW

DC power flow, 37 buses / 48 branches, solved per hour. Hellbender allocation: 1 node × 24 h-blocks in parallel.

0 BUSES →

MW/BUS

drag a box over buses → assign a generation type on the right. shift-drag adds to selection · middle-drag pans · esc clears

GENERATION TYPE

MARKER

radius ∝ installed MW

square = data-center bus

24-hour dispatch stack · MW

Constraint violations

Selection 0 buses

No buses selected. Drag a box on the map, or click a bus.

Assign generation type

Installed capacity per bus MW

Capacity factors are re-derived per bus from local irradiance, 100 m wind resource and terrain before dispatch.

Selected buses

BUS	TYPE	CAP	P_g	CF	$/MWh

Local resource · —

Select a single bus for its climate and terrain record.

BUILDING CASE · SOLVING DC POWER FLOW …