Australia (NER / AEMO) — ride-through requirements

The LVRT, HVRT, FRT envelopes a grid-scale battery must meet under Australia (NER / AEMO) (Australia), digitized breakpoint by breakpoint and checked against the clause it came from.

By Sergey Syrvachev — Director of Product Engineering, grid-scale BESS · 10+ GWh delivered

Part of: the grid-code ride-through chart — compare this against 63 other standards in 42 countries.

What this is, and is not. A reading aid compiled from the clause cited below — not a compliance document. The primary text governs. Some values on this page are marked partial: the level is confirmed but at least one duration step could not be read directly from the source.

Breakpoints

Times are seconds from the start of the disturbance. Voltage is per-unit of nominal; frequency in hertz. An LVRT curve is a lower boundary (stay connected while voltage is on or above it), an HVRT curve an upper boundary, and FRT gives the band between its High and Low boundaries.

Event Duty Breakpoints Status
low-voltage ride-through (LVRT) ride-through 0.001s → 0 pu; 0.43s → 0 pu; 0.431s → 0.7 pu; 2s → 0.7 pu; 2.001s → 0.8 pu; 10s → 0.8 pu; 10.001s → 0.9 pu verified
high-voltage ride-through (HVRT) ride-through 0.001s → 1.3 pu; 0.2s → 1.3 pu; 0.201s → 1.25 pu; 2s → 1.25 pu; 2.001s → 1.2 pu; 20s → 1.2 pu; 20.001s → 1.15 pu; 1200s → 1.15 pu; 1200s → 1.1 pu verified
frequency ride-through (FRT) ride-through High: 0.1s → 52 Hz; 120s → 52 Hz; 120.001s → 51 Hz; 600s → 51 Hz; 600.001s → 50.15 Hz | Low: 0.1s → 47 Hz; 10s → 47 Hz; 10.001s → 47.5 Hz partial

Where these values come from

  • LVRT NER as amended by the National Electricity Amendment (Improving the NEM access standards – Package 1) Rule 2025 No. 6 (ERC0393, final rule published 22 May 2025, in force 21 Aug 2025), item [176] substituting S5.2.5.5(c)(2)-(4) and (d)(1)-(9); item [174] substituting S5.2.5.4(a)(6),(7),(8); and NER Table S5.1a.2 column 4 (breaker-fail clearance times 175/250/430 ms). Sources: and NER Chapter 5 (Table S5.1a.2).
  • HVRT NER S5.2.5.4(a)(1)–(6) as substituted by item [174] of the National Electricity Amendment (Improving the NEM access standards – Package 1) Rule 2025 No. 6 (ERC0393), in force 21 Aug 2025 — . Same list independently confirmed in the AEMC's ERC0222 generator technical performance standards pack.
  • FRT NER S5.2.5.3(a)(3) and (b)(1)-(5) as substituted by item [173] of ERC0393 final rule; AEMC Reliability Panel, Frequency Operating Standard effective 9 October 2023, Table A.3 (mainland: containment 47.0–52.0 for protected/multiple contingency events; stabilisation 49.5–50.5 within 2 minutes; recovery 49.85–50.15 within 10 minutes) and Tables A.6/A.7 (Tasmania 47.0–55.0).

Last checked against the source document on .

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