Your correct export limit is determined by your DNO connection conditions — not by what's convenient or what the installer set at commissioning. We can check your MCS documentation, confirm your G98/G99 status, and set the correct value remotely.
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The export limit tells the GivEnergy inverter the maximum power it is allowed to push onto the grid at any moment. The inverter actively enforces this — if solar generation minus household consumption would exceed the limit, the inverter throttles down output rather than exporting above it.
All generation is consumed by the house or stored in the battery. Any surplus above what the house and battery can absorb is curtailed — the panels back off and that energy is lost. Required for some DNO conditions and leasehold properties.
The G98 limit for single-phase UK connections. Correct for most residential installations. Excess generation above household consumption and battery capacity is exported at up to 3.68kW.
If your DNO issued a G99 approval with a specific export cap — e.g. 1,500W or 2,000W — this figure takes precedence. Your connection agreement will state the exact value. Never exceed your DNO-approved limit.
The correct value is determined by your DNO connection conditions — not by what your installer set, not by what seems reasonable, and not by the inverter's maximum capability. Check your documents before changing this setting.
G98 and G99 are the UK grid connection standards that govern how solar and battery systems connect to the distribution network. Which one applies determines your maximum export level and what the DNO must be told.
A system up to 3.68kW in total, such as solar on its own or a single 3.6kW hybrid inverter, falls under G98. The installer notifies the DNO that the system has been connected — no prior approval is required.
G99 applies to anything above the G98 limit of 16 A per phase (3.68 kW single-phase, 11.04 kW three-phase), even with export limited, or to any installation the DNO determines needs assessment. The DNO reviews the application and may impose conditions — including a specific export cap — before issuing approval.
GivEnergy firmware updates regularly reset the export limit to 0W. When this happens, the system continues to generate and the battery continues to charge and discharge — but nothing is exported to the grid. On an export tariff, this means you stop earning export payments immediately, silently, until someone checks the setting.
In summer months, a well-sized system on a G98 connection might export 5–15 kWh per day. At Octopus Flux export rates or SEG rates of 4–15p/kWh, a blocked export limit costs £0.20–£2.25 per day — potentially £50–£300 over a lost summer season before the problem is noticed.
The system appears to be working normally in every other respect. The only sign is that export figures drop to zero in the portal and export payments stop — which many homeowners don't check frequently enough to catch quickly.
The export limit is set remotely via the portal. No site visit or physical access to the inverter is needed.
Steps to set the export limit
Sign in with your account credentials at givenergy.cloud. Go to My Inverter in the left sidebar.
The export limit is found under Advanced Settings — not under System Mode Settings. Look for a field labelled Export Limit, Grid Export Limit, or similar. On some portal versions this may be under Battery Options or a separate Export section.
The field takes a value in watts (W), not kilowatts. Enter 3680 for the standard G98 single-phase limit, or the exact figure from your G99 approval letter. Enter 0 only if zero export is genuinely required. Do not leave the field blank.
After submitting, wait 2–3 minutes for the setting to propagate to the inverter. On a sunny day, check the portal power flow — if solar is generating above household consumption and the battery is full, you should see the grid arrow showing export up to your new limit.
If you're on a Smart Export Guarantee (SEG), Octopus Outgoing, Octopus Flux, or any other export tariff, a blocked export limit directly reduces your income. The export limit is the single most important setting for export revenue.
During a GivEnergy Timed Export window the battery discharges at full power, or at the power you set, depending on the inverter generation. That output covers the house load first, and the excess goes to the grid. It is used on tariffs like Octopus Flux, where export rates are highest at peak times. The export limit caps how much of that excess can reach the grid, even during Timed Export.
If you use Timed Export on Octopus Flux and the export limit has reset to 0W, the battery can still cover the house load, but nothing reaches the grid. The window ends with no export and no export income.
Firmware resets the export limit to 0W — full post-update settings checklist.
See firmware updates →Timed Charge window and tariff configuration — related settings to the export limit.
See battery not charging →A backwards CT can make export appear to be happening when it isn't.
See CT clamp direction →How to read portal data to verify export is working correctly.
See monitoring setup →This is a brand-specific version of our general export limit issues guide, which covers all brands.
Tell us what the portal shows for grid flow, whether you have an export tariff, and when the problem started. We'll identify whether it's the export limit, the CT clamp, the system mode, or something else — and restore it in one session.
I’ve worked on hundreds of GivEnergy systems and know the kit inside out. If yours is playing up, my promise is simple — no fix, no fee: just £125 if we fix it, free if we don’t.
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