Your network rejected your solar or battery application?
Don't panic — a DNSP knock-back is common, and it's usually a solvable condition rather than a permanent no. Here's the honest, jargon-free explainer on why it happens and exactly how to get connected.
Reviewed by Josh, Mission Green Energy Team · Updated July 2026
Is a DNSP rejection
actually the end of the road?
Almost never. In most cases it's a condition or a fixable error, not a permanent refusal — and the majority of homes that get a knock-back end up connected once the application is adjusted.
Your DNSP — Distribution Network Service Provider, the company that owns the poles and wires in your area — has to approve any system that connects to the grid. When it says no, it's rarely a comment on you or your home. It's usually that the local network can't accept the exact thing that was requested at your address, most often the amount of power you asked to export. That's a solvable problem, not a dead end.
The single most useful thing you can do first is read the exact wording of the response, because the outcomes look similar but mean very different things:
- Approved with an export condition — the most common result. You can install, generate and use your own power; the network just caps how much you send back to the grid. This is not a rejection.
- Rejected pending changes — a fixable issue: a non-approved inverter, a per-phase capacity problem, or missing paperwork. Adjust and resubmit.
- Hard rejection — genuinely rare for a normally sized home system, and usually tied to a badly constrained part of the network where a zero-export or flexible arrangement is the way through.
Below we walk through each reason honestly and what actually fixes it. If you'd rather just have someone read your letter and tell you where you stand, that's what a free assessment is for.
Why did my DNSP
reject my application?
There are really only a handful of reasons, and most of them are conditions or errors rather than a flat no. Here are the ones we see most often.
The network can't take your export
By far the most common reason. The local grid in your street can't absorb the export level requested, so the network applies a capped, flexible or zero export limit instead of a full approval. You can still install and use your own solar — you just export less.
Inverter capacity per phase
Networks limit how much inverter capacity connects to each phase. Single-phase homes are often capped at around 5 kW of inverter per phase; ask for more without a plan to manage it and the application can be knocked back.
Grid-protection settings
Your inverter must meet the Australian standard AS/NZS 4777 for grid connection, including the required protection and demand-response modes (DRM). If the settings or region profile aren't right, the network won't sign off.
Non-approved inverter
Most DNSPs publish an approved inverter list. A model that isn't on it — or a firmware version the network hasn't accepted — is a common, easily avoided rejection when the right unit is specced up front.
Paperwork issues
Sometimes it's simply administrative: a missing or incorrect single-line diagram, the wrong connection form, an incorrect model number, or a mismatch between what's drawn and what's proposed. Frustrating, but quick to fix.
A constrained pocket of the grid
Some areas are genuinely near their hosting limit — lots of solar already installed nearby. Here the network may require zero-export or a flexible-export connection. It's a real constraint, but rarely a total block.
What is an export limit,
and can I still install solar?
An export limit caps how much power you send back to the grid — not how much you generate or use. In most cases you can still install, still generate, and still self-consume everything you use.
This is the reason most "rejections" aren't really rejections at all. An export limit is a cap, measured in kilowatts, on how much your system is allowed to push out to the grid. It says nothing about how much solar you can produce or how much you can use in your own home — only what leaves your property. Your inverter is simply configured not to export more than the allowed amount.
The common flavours are:
- Static export limit — a fixed number, often 5 kW, that your inverter never exceeds regardless of what the grid is doing.
- Zero-export limit — in a heavily constrained area, you use all of your own solar on site and export nothing. It sounds harsh, but for a home that self-consumes well (or has a battery) the impact is often modest.
- Flexible / dynamic export — the smart option, covered below, where the amount you can export changes with local grid conditions.
Here's the part sellers rarely stress: a large share of a system's value comes from self-consumption, not export — and with feed-in tariffs low, exported energy earns relatively little anyway. So a sensible export limit usually has a smaller effect on your savings than the word "limit" suggests. To see how self-consumption drives the maths, read is solar worth it in 2026? and our home battery guide.
What is flexible
or dynamic export?
Instead of being locked to one fixed number all day, your inverter talks to the network and exports more when there's spare capacity and less when the grid is busy. It's often the best way to turn a tight cap into a generous real-world outcome.
Flexible export (also called dynamic export or a dynamic connection) is a smarter alternative to a fixed cap. Rather than being stuck at, say, 5 kW every hour of every day, your system is allowed to export a higher amount most of the time, with the network only pulling the limit down during the small number of hours when your area is actually congested.
In practice, that often means you export far more energy over a year than a static limit would allow, because the constrained hours are the exception, not the rule. Two things are needed to use it:
- A compatible inverter that supports the network's dynamic connection protocol.
- A DNSP that offers the scheme in your area — availability differs between distributors and is expanding over time.
Where it's offered, flexible export is frequently the answer to a static-limit knock-back: instead of arguing over a fixed number, you accept a dynamic arrangement that gives you a better outcome most of the year. An installer who works with your network regularly will know whether it's available for your address.
Can I install a battery
if my network limits export?
Yes — and a battery can be an answer to an export limit, not a casualty of it. If you can't export your surplus for much, storing it and using it after dark is often worth more anyway.
When the network caps or zeroes your export, the energy you'd otherwise have sent to the grid for a low feed-in tariff has to go somewhere useful. A battery is the obvious home for it: your surplus daytime solar charges the battery, and you discharge it in the evening when you'd otherwise be buying expensive grid power. All of that happens behind your export point, so it works within the network's rules — an export limit doesn't stop a battery from earning its keep.
Two honest caveats so you go in clear-eyed:
- The connection still has to be approved and the system configured to respect the export condition. Some networks look carefully at the combined inverter capacity of solar plus battery, which is exactly the kind of detail a good installer handles in the application rather than leaving to chance.
- If blackout backup also matters to you, that has to be specced in deliberately — a battery doesn't automatically keep the lights on. We spell out which circuits stay on before you buy, as covered in our battery guide.
So an export limit is rarely a reason to abandon a battery. If anything, it's often a reason to consider one — see our honest verdict on home batteries for whether it stacks up for your usage.
Is there anything I should
do myself while I sort this out?
A connection problem is a paperwork-and-design problem, not a job for you on a ladder. The honest answer is to leave the equipment alone and let licensed people handle the electrical side.
A DNSP rejection is resolved with forms, diagrams and inverter settings — none of which require you to touch anything live. Please don't try to "fix" a connection issue at the hardware. Our clear safety line:
- Only isolate if it's safe and simple. The most you should ever do yourself is a basic inverter restart via its own isolator switch, following the steps in your inverter's manual — and only if it's safe and straightforward to reach and operate.
- Call a professional for anything more. For anything beyond a simple, safe reset, contact a licensed electrician, your installer, or a CEC-accredited service.
- Never open equipment, touch DC wiring, or work at height. All electrical work must be done by a licensed electrician. Don't open the inverter or battery, don't touch any DC cabling, and don't go onto the roof yourself.
If a fault code or shutdown has you worried, the honest move is to check your inverter or battery manual or the manufacturer's support page for what it means — we won't guess at brand-specific codes — and then call your installer. The connection paperwork can be handled entirely off the roof.
How do I get a rejected
application approved?
The fix depends entirely on the reason on the letter. Match the reason to the remedy — and lean on an installer who knows your specific network.
Accept a capped or flexible limit
If it's an export-limit condition, the usual path is to accept a static, zero or flexible export limit and configure the inverter to comply. In many cases you still install exactly what you wanted.
Resize or go three-phase
If it's an inverter capacity or per-phase limit, the answer is often a slightly smaller inverter, a three-phase arrangement, or export limiting to stay inside the cap without losing much value.
Use an approved, correctly set inverter
If it's a compliance issue, the system needs an inverter that's on the network's approved list, set to the required AS/NZS 4777 protection and demand-response settings for your region.
Supply what's missing and resubmit
If it's administrative, the missing single-line diagram, form or model number is simply supplied and the application resubmitted — often the fastest fix of all.
Match the design to a state's rules
Rules and constraints vary by network and state — for example, export handling differs across distributors. A design that suits New South Wales may differ from one for Victoria or Queensland.
Use an installer who knows your DNSP
The single most effective move: work with an accredited installer who deals with your specific DNSP regularly and knows what it will and won't approve before the application goes in.
Who handles the DNSP approval,
me or my installer?
Your installer should — and with Mission Green, we manage the DNSP pre-approval and the compliant system design for you as a standard part of the job.
You should not have to become a grid-connection expert to get solar or a battery installed. A good installer lodges the connection application, supplies the single-line diagram and inverter details, proposes an export arrangement the network is likely to accept, and configures the inverter to the required AS/NZS 4777 settings — so the approval is sorted before anything is installed, not discovered as a nasty surprise afterwards.
That's exactly how we work. Mission Green handles the DNSP pre-approval and compliant design up front, because getting the paperwork and the export arrangement right the first time is the difference between a smooth install and a stalled one. It's an unglamorous compliance edge — and a genuinely useful one.
And to be clear on safety once more: resolving a connection issue never requires you to open equipment, touch DC wiring or work at height. All electrical work must be done by a licensed electrician; anything beyond a simple, safe inverter restart via its isolator per the manual should go to your installer or a CEC-accredited service.
So — what should you do next?
Read the exact reason on your letter, then match it to the remedy — and let an installer who knows your network do the heavy lifting.
A DNSP knock-back is one of the most fixable problems in the whole solar and battery process. In the large majority of cases it's an export condition you can happily live with, a capacity or compliance detail that's easily adjusted, or plain paperwork. The honest advice is simple: don't read "rejected" as "impossible", don't rush into a redesign before you understand the reason, and work with someone who deals with your specific network so it's right the first time. If a flexible-export or zero-export arrangement is offered, take a hard look — it's often a better outcome than it sounds.
DNSP rejections
Your questions, answered.
Usually because the local network cannot accept what was requested at your address — not because you have done anything wrong. The most common reason is that the network cannot take the requested export level, so it applies a capped, flexible or zero export limit rather than a full-blown refusal. Other frequent reasons are inverter capacity limits per phase (single-phase homes are often capped at around 5 kW of inverter per phase), required grid-protection or compliance settings under AS/NZS 4777 (including demand response modes), an inverter make or model that is not on the network's approved list, or simply paperwork issues like a missing single-line diagram or the wrong form. Most of these are conditions or fixable errors, not a permanent no. The honest first step is to read the exact wording of the response, because 'rejected' and 'approved with an export condition' are very different outcomes and are often confused.
An export limit is a cap the network places on how much power your system is allowed to send back to the grid, measured in kilowatts. It does not limit how much solar you can generate or use yourself — only what you export. In most cases an export limit is not a rejection at all: you can still install the solar or battery, keep generating, and self-consume everything you use on site, while the inverter is simply configured not to push more than the allowed amount out to the grid. A common example is a static export limit of 5 kW, or in constrained parts of the network a zero-export limit, where you use all your own solar but export nothing. Because so much of a system's value comes from self-consumption rather than export, a sensible export limit often has a smaller effect on your savings than people fear.
Flexible export (also called dynamic or dynamic connection) is a smarter alternative to a fixed cap. Instead of being locked to a single number like 5 kW all day, your inverter talks to the network and is allowed to export more when the local grid has spare capacity and less when it is congested. In practice this usually means you can export a higher amount most of the time, with the network only pulling the limit down during the small number of hours when the area is constrained. It needs a compatible inverter and a network that offers the scheme in your area, and availability differs between distributors. Where it is offered, a flexible-export connection is often the best way to turn a tight static limit into a much more generous real-world outcome.
Yes, in most cases — and a battery can actually be a good answer to an export limit rather than a casualty of it. If the network caps or zeroes your export, storing your surplus solar in a battery and using it in the evening is often more valuable than exporting it for a low feed-in tariff anyway, so the limit hurts less than it first appears. The battery is charged from your own daytime solar and discharged when you need it, all behind your export point, so it works within the network's rules. The connection still has to be approved and the system configured to respect the export condition, and some networks treat the combined inverter capacity carefully, which is exactly the kind of detail an experienced installer handles in the application. If keeping the lights on in an outage also matters, note that backup has to be specced in deliberately.
Start by reading the exact reason on the response, because the fix depends entirely on it. If it is an export-limit condition, the usual path is to accept a capped, zero or flexible export limit and configure the inverter to comply. If it is an inverter capacity or per-phase limit, the answer is often a smaller inverter, a three-phase arrangement, or export limiting to stay within the cap. If it is a compliance issue, the system needs an inverter that is on the network's approved list and set to the required AS/NZS 4777 protection and demand-response settings. If it is paperwork, the missing single-line diagram, form or model number is simply supplied and resubmitted. The single most effective move is to work with an accredited installer who deals with your specific DNSP regularly and knows what that network will and will not approve before the application goes in.
Your installer should handle it, and with Mission Green we manage the DNSP pre-approval and the compliant system design for you as a standard part of the job. A good installer lodges the connection application, supplies the single-line diagram and inverter details, proposes an export arrangement the network is likely to accept, and configures the inverter to the required settings — so the approval is sorted before anything is installed, not discovered as a problem afterwards. You should never have to open equipment, touch any DC wiring, or work at height to resolve a connection issue; all electrical work must be done by a licensed electrician, and anything beyond a simple, safe inverter restart via its isolator per the manual should go to your installer or a CEC-accredited service. If your current application has stalled or been knocked back, we are happy to review the wording and tell you honestly what it will take to get connected.