OpenNEM API
OpenNEM API provides real-time and historical electricity generation, demand, and pricing data for the Australian National Electricity Market (NEM), including renewable energy breakdown by source.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
HTTPS enforced. No auth means no secret management burden. Open source codebase on GitHub allows dependency inspection. No sensitive data served. Community project without formal security review process.
⚡ Reliability
Best When
An agent needs free, no-auth Australian electricity data — generation mix, pricing, or renewable percentage — for research, sustainability, or monitoring applications.
Avoid When
You need a commercial SLA, non-Australian markets, or real-time data with sub-minute granularity.
Use Cases
- • Monitoring Australian electricity grid renewable energy percentage
- • Real-time electricity price tracking for demand-response applications
- • Historical NEM generation mix analysis for sustainability reporting
- • Research on Australian energy transition and coal phase-out
- • Carbon intensity estimation for Australian cloud/compute workloads
Not For
- • Non-Australian electricity markets
- • Western Australian grid (SWIS/WEM — limited coverage)
- • Individual meter or smart grid data
- • Production SLA-backed energy management systems
Interface
Authentication
No authentication required. Fully open API. No rate limits published; community-maintained project.
Pricing
Open source, community-funded project. No commercial model. Data sourced from AEMO (Australian Energy Market Operator) public feeds.
Agent Metadata
Known Gotchas
- ⚠ API versioning is informal — endpoints change without formal deprecation notices
- ⚠ Data is in Australian Eastern time (AEST/AEDT) — agents must handle DST transitions carefully
- ⚠ 5-minute interval data for NEM is the finest granularity; some regions only report 30-minute
- ⚠ Network regions use AEMO codes (NSW1, VIC1, QLD1, SA1, TAS1) — not state names
- ⚠ Spot prices can be highly volatile (negative to $15,000/MWh) — validate before using in calculations
- ⚠ Community-maintained service has had multi-day outages; no SLA exists
Alternatives
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Scores are editorial opinions as of 2026-03-07.