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Configuration · SolarEdge

SolarEdge Export Limit — G99 Configuration & Curtailment Fix

Your SolarEdge system is curtailing generation because of its export limit configuration. If the monitoring graph shows a flat line during peak sun — even when you have loads running — the export meter or CT clamp is likely misconfigured or has lost communication with the inverter.
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  • SetApp installer-level access
Losing generation to over-curtailment?

If your system flat-lines during peak sun even when household loads are running, the export meter communication has probably dropped — forcing the inverter into fixed limiting. We restore dynamic limiting remotely via SetApp.

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Independent — not affiliated with SolarEdge Technologies.

5.0
13 Trustpilot reviews
Trustpilot Google

I have a GivEnergy system consisting of two batteries, two inverters and a controlling EMS (Energy Management System) which has not worked since Nov 2025. After six months I discovered Solar Tech Support, reached out to them and Ron phoned me back – how often do you get that service? Could not be more helpful – worked directly with me over the phone, outside what I would call normal working hours. Lucid explanations and we were able to discuss the issues and history using camera and email history. As this was a very rare setup, Ron was able to access an EMS expert in the field to confirm the solution. One sunny day in, I am now only paying for standing charge and a few pence for spikes in grid consumption while battery catches up with house demand.

Ian · May 2026 Trustpilot

When my GivEnergy system had an issue, I was completely left without support and had honestly lost all hope. Thankfully, I searched online and found Ron, which completely turned things around. After sending him a message, he responded incredibly fast and called me to assure me that he would get the problem fixed. I really admire his dedicated, supportive nature and his determination to find a solution. With this kind of outstanding attitude and customer service, he has absolutely secured a future customer in me.

Sree · May 2026 Trustpilot

Ron want out of is way to help, nothing was to much. He was very thorough in what he did Very knowledgeable I would highly recommend Ron and his company He did a fantastic job for me. if you have any problems, he'll do his best to help you out and resolve your problem. I wouldn't hesitate to recommend them

Dennis Brown · May 2026 Trustpilot

Ron took me through a diagnostic to confirm my GivEnergy Inverter had a fault. A common one as it turns out with the AC Inverter. As GivEnergy is defunct there is no immediate fix, aside from sourcing 2nd hand replacement. It may be that a fix becomes available over the summer which would make a lot of GivEnergy customers happy (Again)

Tony Deacon · May 2026 Trustpilot

Contacted Ron with a problem and he sorted it out quickly with no problems at all. Very knowledgeable on anything solar/ batteries. I would recommend him to anyone

Phill · May 2026 Trustpilot

I've spoken to Ron a couple of times with issues with my Givenergy installation. Such a friendly knowledge guy very highly recommended. Thank you very much for resolving my issues

michael fairhurst · May 2026 Trustpilot

Contacted Solar Tech Support in desperation. After explaining the issues I had with my system a diagnosis was made and a solution proposed. Fantastic service, even contacted a manufacturer to arrange replacement parts for me. Great communications, explained all they were doing and what I had to do, clearly and precisly. Followed up to confirm all was ok. Excellent service.

Mr Machin · May 2026 Trustpilot

After GivEnergy went into liquidation, just my luck, my battery started playing up (internal board crashed). Contacted my installer - not interested! Found Solar tech support on a Google search. Sooo glad I found this company! Ron is extremely helpful and has plenty of experience. He soon confirmed what the fault was, and helped me to get my system up and running again. Now moved my GivEnergy account to Solar tech support, and will definitely use again if I have more issues. Unusual to find such a helpful company in these times, no morons reading scripts, just direct contact with the engineer.

Keith Ballard · Apr 2026 Trustpilot

Contacted Solar Tech Support when trying to understand what my Givenergy inverter problem might be and what might be my options. Received good/honest advise which backed up my thoughts.

Hugh Speirs · Apr 2026 Trustpilot

Ron is a super star. Two months ago my GivEnergy battery failed a firmware upgrade leaving it a brick. My installer couldn't/wouldn't fix it. GivEnergy couldn't/wouldn't fix it. Then they went into administration and all hope was lost. A flurry of emails later and Ron had diagnosed the fault (failed USB flash drive, something I'd suspected) and talked me through resolving it. Two months of nothing resolved in about 3 hours. It's great to work with someone who pays attention to the details, knows that they're doing (not just following a script) and gets stuff sorted without a fuss or up-charging.

Christopher · Apr 2026 Trustpilot

I can add to the list of customers who had already 'given up' on GivEnergy due to their appalling customer service, and that was before they went into administration (their Trustpilot reviews don't lie!). So you can imagine my desperation when, having changed my ISP and my Inverter, predictably, proving to be the only device that didn't connect automatically to my new network, I found zero prospect of any customer support with GivEnergy having called in the administrators just five days earlier! The salvation came from Solar Tech Support. My IT advisor stumbled across their web site and some very helpful tips for beleaguered GivEnergy customers, as well as an offer to provide direct assistance. Nothing ventured, I decided to drop them an E-Mail, with very low expectations based on my experience of GivEnergy customer support. Within an hour Ron had responded with some pin point advice, and after a few exchanges of E-Mails he had nailed the problem, enabling the combined efforts of my IT advisor and solar installer to resolve it and reconnect my Inverter. Thank you Solar Tech Support, and Ron in particular, for coming to the aid of a deserted and despondent GivEnergy customer. Expert, razor sharp advice and first class customer service, even though I wasn't officially a customer.

customer · Apr 2026 Trustpilot

This company are a rare gem, I had a very unusual problem following a failed firmware upgrade on my GivEnergy kit. I then found out GivEnergy were in administration and had dismissed all their support staff! None of the usual fixes to try and restore my inverter comms would work, and I looked everywhere, forums, GivEnergy youtube support videos - even AI couldn't figure it out. My installer was talking about huge sums for system replacements, and being vague / evasive about if they'd even install replacement GivEnergy inverter. Enter Solar Tech Support, reassuring and knowledgeable from the very start, I've learnt loads about my solar system though the friendly chat while my engineer worked as he diagnosed the problem and figured out a fix procedure that I've not found anywhere else - amazing . If you need solar system repairs - especially if you like me have been left high and dry by GivEnergy, I cannot recommend this company enough. Give them a call.

Andy Thomas · Apr 2026 Trustpilot

I sent a message on their website regarding a problem I have on my Givenergy system. Although not supplied by Ronald, I thought it was worth an email. Within the hour on a Saturday, he phoned and we discussed the problem. He logged in remotely and gave excellent advice. I'm too far away for his on-site help but he did diagnose the problem and was happy also to chat through my thoughts about an upcoming solar/battery install I'm planning. Great bloke.... if only he was nearer!

Philip · Apr 2026 Trustpilot

I have a GivEnergy system consisting of two batteries, two inverters and a controlling EMS (Energy Management System) which has not worked since Nov 2025. After six months I discovered Solar Tech Support, reached out to them and Ron phoned me back – how often do you get that service? Could not be more helpful – worked directly with me over the phone, outside what I would call normal working hours. Lucid explanations and we were able to discuss the issues and history using camera and email history. As this was a very rare setup, Ron was able to access an EMS expert in the field to confirm the solution. One sunny day in, I am now only paying for standing charge and a few pence for spikes in grid consumption while battery catches up with house demand.

Ian · May 2026 Trustpilot

When my GivEnergy system had an issue, I was completely left without support and had honestly lost all hope. Thankfully, I searched online and found Ron, which completely turned things around. After sending him a message, he responded incredibly fast and called me to assure me that he would get the problem fixed. I really admire his dedicated, supportive nature and his determination to find a solution. With this kind of outstanding attitude and customer service, he has absolutely secured a future customer in me.

Sree · May 2026 Trustpilot

Ron want out of is way to help, nothing was to much. He was very thorough in what he did Very knowledgeable I would highly recommend Ron and his company He did a fantastic job for me. if you have any problems, he'll do his best to help you out and resolve your problem. I wouldn't hesitate to recommend them

Dennis Brown · May 2026 Trustpilot

Ron took me through a diagnostic to confirm my GivEnergy Inverter had a fault. A common one as it turns out with the AC Inverter. As GivEnergy is defunct there is no immediate fix, aside from sourcing 2nd hand replacement. It may be that a fix becomes available over the summer which would make a lot of GivEnergy customers happy (Again)

Tony Deacon · May 2026 Trustpilot

Contacted Ron with a problem and he sorted it out quickly with no problems at all. Very knowledgeable on anything solar/ batteries. I would recommend him to anyone

Phill · May 2026 Trustpilot

I've spoken to Ron a couple of times with issues with my Givenergy installation. Such a friendly knowledge guy very highly recommended. Thank you very much for resolving my issues

michael fairhurst · May 2026 Trustpilot

Contacted Solar Tech Support in desperation. After explaining the issues I had with my system a diagnosis was made and a solution proposed. Fantastic service, even contacted a manufacturer to arrange replacement parts for me. Great communications, explained all they were doing and what I had to do, clearly and precisly. Followed up to confirm all was ok. Excellent service.

Mr Machin · May 2026 Trustpilot

After GivEnergy went into liquidation, just my luck, my battery started playing up (internal board crashed). Contacted my installer - not interested! Found Solar tech support on a Google search. Sooo glad I found this company! Ron is extremely helpful and has plenty of experience. He soon confirmed what the fault was, and helped me to get my system up and running again. Now moved my GivEnergy account to Solar tech support, and will definitely use again if I have more issues. Unusual to find such a helpful company in these times, no morons reading scripts, just direct contact with the engineer.

Keith Ballard · Apr 2026 Trustpilot

Contacted Solar Tech Support when trying to understand what my Givenergy inverter problem might be and what might be my options. Received good/honest advise which backed up my thoughts.

Hugh Speirs · Apr 2026 Trustpilot

Ron is a super star. Two months ago my GivEnergy battery failed a firmware upgrade leaving it a brick. My installer couldn't/wouldn't fix it. GivEnergy couldn't/wouldn't fix it. Then they went into administration and all hope was lost. A flurry of emails later and Ron had diagnosed the fault (failed USB flash drive, something I'd suspected) and talked me through resolving it. Two months of nothing resolved in about 3 hours. It's great to work with someone who pays attention to the details, knows that they're doing (not just following a script) and gets stuff sorted without a fuss or up-charging.

Christopher · Apr 2026 Trustpilot

I can add to the list of customers who had already 'given up' on GivEnergy due to their appalling customer service, and that was before they went into administration (their Trustpilot reviews don't lie!). So you can imagine my desperation when, having changed my ISP and my Inverter, predictably, proving to be the only device that didn't connect automatically to my new network, I found zero prospect of any customer support with GivEnergy having called in the administrators just five days earlier! The salvation came from Solar Tech Support. My IT advisor stumbled across their web site and some very helpful tips for beleaguered GivEnergy customers, as well as an offer to provide direct assistance. Nothing ventured, I decided to drop them an E-Mail, with very low expectations based on my experience of GivEnergy customer support. Within an hour Ron had responded with some pin point advice, and after a few exchanges of E-Mails he had nailed the problem, enabling the combined efforts of my IT advisor and solar installer to resolve it and reconnect my Inverter. Thank you Solar Tech Support, and Ron in particular, for coming to the aid of a deserted and despondent GivEnergy customer. Expert, razor sharp advice and first class customer service, even though I wasn't officially a customer.

customer · Apr 2026 Trustpilot

This company are a rare gem, I had a very unusual problem following a failed firmware upgrade on my GivEnergy kit. I then found out GivEnergy were in administration and had dismissed all their support staff! None of the usual fixes to try and restore my inverter comms would work, and I looked everywhere, forums, GivEnergy youtube support videos - even AI couldn't figure it out. My installer was talking about huge sums for system replacements, and being vague / evasive about if they'd even install replacement GivEnergy inverter. Enter Solar Tech Support, reassuring and knowledgeable from the very start, I've learnt loads about my solar system though the friendly chat while my engineer worked as he diagnosed the problem and figured out a fix procedure that I've not found anywhere else - amazing . If you need solar system repairs - especially if you like me have been left high and dry by GivEnergy, I cannot recommend this company enough. Give them a call.

Andy Thomas · Apr 2026 Trustpilot

I sent a message on their website regarding a problem I have on my Givenergy system. Although not supplied by Ronald, I thought it was worth an email. Within the hour on a Saturday, he phoned and we discussed the problem. He logged in remotely and gave excellent advice. I'm too far away for his on-site help but he did diagnose the problem and was happy also to chat through my thoughts about an upcoming solar/battery install I'm planning. Great bloke.... if only he was nearer!

Philip · Apr 2026 Trustpilot
UK export limit thresholds
G98 — up to 3.68 kW/phase · no limit required
G99 — above 3.68 kW/phase · DNO approval + limit
Zero export — no power to grid · some DNO areas

Most UK SolarEdge systems above 3.68 kW have a G99 export limit configured via SetApp. The limit should only restrict grid export — not total generation.

Diagnostics

6-step export limit diagnosis

If your SolarEdge system is generating less than it should during peak sun, the export limit configuration is the first thing to check.

1

Understand what export limiting does and why your system has it

Export limiting controls how much power the inverter sends to the grid. In the UK, systems above 3.68 kW single-phase require G99 approval from the DNO, and most G99 approvals include an export limit — typically 3.68 kW or zero export.

The inverter monitors grid export in real-time using a revenue grade meter or CT clamp at the grid connection point, and automatically reduces output when export approaches the limit. The limit should only affect power sent to the grid — not total generation. Your system should still produce enough to cover household consumption plus the export limit.

2

Check whether your system is curtailing more than it should

The clearest sign of an export limit problem is a flat line on your generation graph during peak sun. Open the SolarEdge monitoring portal and compare your daily generation curve against what the panels should produce. A healthy system follows a smooth bell curve peaking around midday.

If the curve flattens at a consistent level — even when you are running dishwashers, washing machines, or other loads — the export limit is probably misconfigured. With a 3.68 kW export limit and 2 kW household consumption, the inverter should produce up to 5.68 kW before curtailing. If it is flat at 3.68 kW total, the system is ignoring your self-consumption and applying a fixed cap.

3

Identify whether you have dynamic or fixed export limiting

Dynamic limiting uses the meter to track real-time export — the inverter adjusts continuously to keep export below the limit while maximising self-consumption. This is the correct mode for most UK installations.

Fixed limiting applies a hard cap on total output regardless of what you are consuming. If your system curtails even with high household loads, it may be set to fixed mode — or the meter communication has failed.

When the inverter loses contact with the export meter, it falls back to fixed limiting as a safety measure. This is the single most common cause of unnecessary over-curtailment on SolarEdge systems in the UK.

4

Check the CT clamp orientation and meter communication

The CT clamp at the consumer unit must have its arrow pointing toward the grid — not toward the inverter. If the orientation is reversed, the meter reads export as import and vice versa. This causes the inverter to produce more when it should curtail and curtail when it should produce.

Check the RS485 cable between the meter and the inverter communication board — a loose connection causes intermittent communication loss, triggering the fixed-limit fallback. In SetApp or the monitoring portal, the meter status should show as connected with live readings.

Error 3x6E in the event log means the meter is not being detected. Check the meter ID matches the inverter configuration, verify the RS485 connections at both ends, and confirm the meter has power (status LEDs should be lit).

5

Export limit changes require installer-level access

SolarEdge locks export limit configuration behind installer-level authentication in SetApp. Homeowners can view monitoring data but cannot access the export limit, meter configuration, or grid compliance settings. This is a safety measure — incorrect settings can violate your G99 agreement.

If the export limit needs adjusting, it must be done by a qualified installer with SetApp access. If your original installer is no longer available or has gone out of business, STS can reconfigure the system remotely.

6

Book a configuration review if you are losing generation

If your monitoring shows consistent curtailment during peak hours while household loads are running, the system is leaving energy on the table. STS reviews your monitoring data to quantify the loss, checks the export limit configuration remotely via SetApp, and corrects the settings.

Common fixes: restoring dynamic limiting after a meter communication failure, correcting CT clamp polarity, updating the export limit value to match your DNO approval, reconfiguring after an inverter replacement where original settings were not transferred.

Why export limit problems are so common after inverter replacements

SolarEdge HD-Wave inverters have a documented failure rate, and warranty replacements are routine. The problem is that the export limit configuration lives in the inverter — not in the monitoring portal. When a new inverter is fitted, the export limit must be reconfigured from scratch by the installer using SetApp. If the replacement engineer does not have the original DNO approval documents or does not realise an export limit was configured, the new inverter may ship with no limit (violating G99) or with a fixed limit instead of dynamic.

The homeowner often does not notice immediately because the system is generating again. The curtailment only becomes apparent weeks or months later when someone checks the monitoring data and sees the characteristic flat-line during peak production. By that point, significant generation has been wasted.

This also happens when an installer goes out of business and the homeowner cannot get SetApp access to check or modify the configuration. The export limit settings are locked behind the installer's account, and SolarEdge does not provide homeowner access to these parameters. An independent engineer with their own SetApp installer credentials can take over the system configuration and correct the settings.

Export limit issues — all brands
FAQ

Export limit — common questions

An export limit controls the maximum power the inverter sends to the grid. UK systems above 3.68 kW single-phase need G99 approval, which typically includes an export limit condition. SolarEdge uses a revenue grade meter or CT clamp at the grid connection point to measure real-time export — the inverter reduces output when the limit is reached. The limit only affects grid export, not total generation, so the system still produces power for self-consumption.
The most common cause is the meter or CT clamp communication has failed. When the inverter loses contact with the export meter, it falls back to fixed limiting — a hard cap on total output regardless of self-consumption. Other causes include reversed CT clamp orientation, the limit set to zero, or the system configured for fixed mode instead of dynamic. An installer with SetApp access can check and correct the configuration.
No. SolarEdge locks export limit settings behind installer-level authentication in SetApp. Homeowners can view monitoring data but cannot access configuration menus for export limiting, meter setup, or grid compliance. This is a safety measure — incorrect settings can violate your G99 agreement. If changes are needed, a qualified installer with SetApp access must make the adjustment. STS can do this remotely in most cases.
G98 covers systems at 3.68 kW or below per phase — these use a simplified notification process and do not typically need export limiting. G99 covers systems above that threshold and requires prior DNO approval. Most G99 approvals include an export limit, usually set to 3.68 kW to match the G98 threshold. Some DNOs approve higher limits or zero export depending on the local network conditions.
A correctly configured dynamic limit causes minimal loss — it only curtails when export exceeds the limit and household consumption is low. If the configuration is wrong and the system is using fixed limiting or the meter has failed, losses can reach 20–40% of potential generation during summer peak hours. STS analyses your monitoring data to calculate the exact loss and provide evidence of the misconfiguration.
Book

Export limit wrong? We fix it remotely via SetApp.

We review your monitoring data to quantify the generation loss, check the export limit configuration, and correct the settings — without a site visit in most cases.

  • Not affiliated with SolarEdge
  • Remote configuration from £75
  • Installer-level SetApp access

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