Distribution network service provider (DNSP)
Thirteen of these, each with its own connection application and export rules — and almost all of them independently arrived at the same 5kW-per-phase cap.
Responsibilities
- Assess and approve applications to connect embedded generation
- Set static and flexible export limits
- Authorise a system to export once metering is in place
- Operate emergency backstop curtailment where a jurisdiction requires it
The distribution counterpart to the transmission network businesses, and the body that decides whether a household's solar may export.
Approval itself is fast. For a standard residential system — up to 10 kW single-phase or 30 kW three-phase — connection approval typically takes 3 to 10 business days. This database does not have a complaint about that step.
Export limits are where the national picture fragments. Almost every DNSP in Australia caps exports at 5 kW per phase, which is a striking convergence: network businesses under separate regulatory determinations independently landing on the same number. Above that, and for anything non-standard, the process becomes longer and more expensive.
And the emergency backstop arrived five separate times. The capability to curtail rooftop solar during minimum-demand events is required by AEMO, and each jurisdiction legislated it on its own schedule with its own threshold:
| Jurisdiction | Backstop |
|---|---|
| South Australia | All systems installed after September 2020 must be capable of remote disconnection (Smarter Homes) |
| Queensland | Inverters larger than 10 kW require a signalling device, from February 2023 |
| Victoria | Systems 200 kW and under, and legacy systems on inverter replacement, from 1 October 2024 |
| Western Australia | Western Power two-pathway export model from 1 May 2026 |
| New South Wales | CSIP-AUS rollout progressively by LGA and postcode from June 2026, complete October-December 2026 |
Same physics, same market operator, same requirement, five commencement dates across six years. See One inverter standard, one accreditation, one subsidy — and five emergency backstops across six years.
Where this body appears in a process
Every point at which Distribution network service provider can hold something up, and why.
| Process | Step | Why it waits | Clock | Typical |
|---|---|---|---|---|
| A household installs rooftop solar and is permitted to export | Network connection approval application | assessment | — | 7 |
| A household installs rooftop solar and is permitted to export | Network authorises export decision | assessment | — | 3 |
| A household installs rooftop solar and is permitted to export | Emergency backstop capability enabled certification | assessment | — | 0 |