Thank you for your diligence. On this occasion the battery was able to be saved but they have given a route to hopefully arrange a repair from the manufacturer.
David Bateman · Jun 2026 Google
Configuration guide · GivEnergy EMS
GivEnergy Energy Management System — Complete Configuration Guide
The GivEnergy EMS coordinates every energy flow in your home — when the battery charges, when it discharges, and when surplus energy is exported. Get it right and your system runs like clockwork. Get it wrong and you'll be importing peak-rate electricity with a full battery sitting doing nothing.
Free remote diagnostic · pay only if we fix it — remote fixes from £75
- Timed charge, discharge & export explained
- The midnight crossing rule
- Target SOC and multi-inverter setups
EMS not working correctly?
If your charge schedule isn't applying, the battery isn't discharging when expected, or your system keeps reverting to the wrong mode, we diagnose EMS configuration issues remotely — identifying schedule conflicts, timezone errors, and API overrides.
Book your free remote diagnosticSettings changing themselves?Not affiliated with GivEnergy Ltd. Independent diagnosis and support.
Ron made more sense in 20 mins than our installer has done over the last 12 months There is a jungle out there and you need someone like Ron to give a comprehensive overview and solution
David · May 2026
Ron was really helpful. He remotely adjusted my battery settings on the same day I contacted him, and at a reasonable price. Great service.
Jackie Palman · Jun 2026 Google
I’ve used Ron a couple of times regarding issues with my Givenergy inverter and batteries after Givenergy went bust. My system stopped working properly so it was a stressful time but Ron resolved the issues and got my system working properly again. He’s really helpful and knowledgeable and I wouldn’t hesitate to recommend him and to use him again if the need arose.
Michael Fairhurst · Jun 2026 Google
I can’t praise this firm enough. After hearing my solar panels rattling in very windy conditions, I contacted Solar Tech (as my installers no longer trade). Ronald was fantastic at explaining what he thought the issue was likely to be. Communication was great throughout keeping me fully updated. The team worked really hard on the day to carry out the necessary work. I can now sleep soundly at night without worrying about the solar panels on my roof. I would thoroughly recommend this firm. Thank you for sorting the problem out.
Carolyn Addison · Jun 2026 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
Overview
What is the GivEnergy EMS?
The Energy Management System is the intelligence layer inside your GivEnergy inverter. It continuously monitors four data streams and uses them to decide what to do with every watt of power in your home.
Solar (PV) generation
Live output from your panels. The EMS prioritises using this locally before charging the battery or exporting.
Grid import & export
Measured by CT clamps on the grid supply. The EMS uses this to detect whether you're importing or exporting and at what rate.
Battery state of charge
Real-time SOC from the BMS. The EMS uses this to apply target SOC limits during charge and discharge operations.
Home consumption
Calculated from generation and grid data. Used to ensure the battery response matches actual demand rather than over or under-supplying.
Your schedule tells the EMS when to run Timed Charge, Timed Discharge, or Timed Export. Between scheduled slots it falls back to Self-Consumption mode, using solar first and only drawing from the grid when needed.
Setup
How to access EMS settings
Via the portal (recommended)
1.Log into givenergy.cloud
2.Go to Dashboard → Inverters
3.Select your inverter card
4.Click Settings to open EMS configuration
The portal provides the most complete view of all EMS options.
Via the app
1.Open GivEnergy app
2.From the home screen, tap the cog icon (top right)
3.This opens inverter and EMS settings
The app exposes the main scheduling options — sufficient for most users.
Charge slots
Setting up Timed Charge
Timed Charge instructs the battery to charge from the grid during your defined slot, regardless of solar availability. This is how you take advantage of cheap overnight electricity rates.
Configuration
Start time
Beginning of your cheap-rate window (e.g. 00:30)
End time
End of cheap-rate window (e.g. 05:30). Must not cross midnight.
Target SOC
The level to charge to (typically 100%). Charging stops when this is reached.
Key rules
·Slots cannot cross midnight — split if needed
·Multiple slots can be used in one day
·Timed Charge is overridden by Timed Export
·During the slot, battery also accepts solar surplus
·Battery stops at target SOC, system returns to self-consumption
Example: Octopus Go (00:30–05:30)
Charge Slot 1: 00:30 → 05:30 | Target SOC: 100%
No midnight split needed — slot sits entirely within one day.
Example: Economy 7 with midnight crossing (23:30–06:30)
Charge Slot 1: 23:30 → 23:59 | Target SOC: 100%
Charge Slot 2: 00:00 → 06:30 | Target SOC: 100%
Split at midnight — both slots work correctly together.
Discharge slots
Setting up Timed Discharge
Timed Discharge forces the battery to supply the household during defined windows, displacing expensive peak-rate grid import. The target SOC sets the minimum the battery will discharge to before stopping.
Configuration
Start time
When peak rate begins (e.g. 16:00)
End time
When peak rate ends (e.g. 22:00)
Target SOC
Minimum battery level. Set to 4% for full utilisation, 20% to preserve some reserve.
Important behaviour
·Discharge stops at target SOC — grid covers remainder
·Battery still charges from solar surplus during a discharge slot
·Timed Charge overrides Timed Discharge if slots overlap
·Timed Export overrides Timed Discharge completely
·Multiple discharge slots can be set for the same day
Example: three-slot discharge day
Discharge Slot 1: 00:00 → 05:00 | Target SOC: 4% (overnight protection)
Discharge Slot 2: 05:00 → 16:00 | Target SOC: 60% (preserve for evening)
Discharge Slot 3: 16:00 → 23:59 | Target SOC: 4% (full evening discharge)
Between 05:00–16:00 the battery retains 60% reserve — enough to power evening peak from battery rather than grid.
Export
Setting up Timed Export
Timed Export pushes stored battery energy to the grid during high-value export windows. It overrides Timed Discharge and requires manual reset once the target is reached.
Timed Export does not automatically resume discharge
Once the battery reaches the Timed Export target SOC, the system stops exporting but does not automatically begin Timed Discharge. The battery will sit at whatever SOC it's at. You must either manually reset the export slot, or sequence a Timed Discharge slot immediately after the export window in your daily schedule. This is the most commonly misunderstood EMS behaviour.
Export slot settings
Export windowThe window when export is valuable (e.g. 16:00–19:00 on Agile)
Target SOCMinimum SOC the battery exports down to (e.g. 33%)
Export rateHow fast to export — set per inverter in kW
Export duration factors
·Total battery capacity (more kWh = longer export)
·Current SOC when export starts
·Target SOC (how far down you're exporting)
·Configured export power limit per inverter
Critical rule
The midnight rule
GivEnergy slots — charge, discharge, or export — must sit entirely within a single 24-hour period. No slot can span midnight. This is a firmware constraint, not a portal bug. It applies in both the app and the portal.
Crosses midnight — will not work
WRONG
Charge Slot 1: 23:30 → 05:30
Spans midnight — ignored or behaves unpredictably
✓ Split at midnight — works correctly
CORRECT
Charge Slot 1: 23:30 → 23:59
Charge Slot 2: 00:00 → 05:30
Both slots apply correctly together
This is the most common reason batteries don't charge overnight
If someone set up your system and the overnight charging has "never quite worked," the midnight rule is usually why. Slots look fine in the interface but simply don't function when they cross 00:00. The fix is straightforward — split the slot at midnight. Check your current schedules and look for any that run from late evening through to early morning.
Best practice
EMS best practice tips
Always do these
✓Align charge slots precisely with cheap-rate window
✓Check portal timezone is set correctly (BST vs GMT shifts)
✓Verify schedule applied by checking Charts the next day
✓Keep discharge targets realistic — 4% for full utilisation, 10–20% if you want EPS reserve
✓Adjust seasonally — summer generation reduces how much overnight charge you actually need
Avoid these
·Slots that cross midnight
·Running manual EMS schedules alongside an API integration (Octopus Intelligent, etc.)
·Setting export target SOC to 0% — leaves nothing for household use
·Overlapping charge and discharge slots at the same time
·Making multiple schedule changes at once — change one thing, observe, then adjust
For tariff selection and how to match your cheap window to the most financially beneficial schedule, see the tariff optimisation guide. For CT clamp issues causing the EMS to misread grid import/export, see the CT clamp direction guide.
GivEnergy EMS — common questions
Check in order: (1) does the slot cross midnight? Split it. (2) Is there an API connection (Octopus Intelligent, etc.) overriding it? Check Connected Apps in the portal. (3) Is the portal timezone set correctly? A BST/GMT mismatch shifts your schedule by an hour. (4) Is the CT clamp pointing the wrong direction? This causes the inverter to misread import as export and vice versa.
Target SOC is the battery level the EMS aims for during a Timed Charge, Discharge, or Export slot. In Timed Charge, charging stops when this level is reached. In Timed Discharge, discharging stops at this level and the system falls back to grid for remaining demand. Setting it to 4% in a discharge slot means the battery delivers nearly all its stored energy before stopping.
Timed Export overrides Timed Discharge, and once the export target SOC is reached, the system stops exporting but does not automatically start discharging. The battery stays at whatever level it reached. You need to either manually reset the export slot or ensure a Timed Discharge slot is scheduled to follow the export window in your daily schedule.
Yes — this is normal and recommended. A typical day has a Timed Charge slot during the cheap overnight window, one or two Timed Discharge slots covering morning and evening peaks, and Self-Consumption mode handling the daytime. The slots must not overlap. Timed Charge takes priority over Timed Discharge if they accidentally overlap.
The remote diagnostic is free — if we can't get your schedule behaving, there's nothing to pay. EMS problems are nearly always configuration (a midnight-crossing slot, a timezone offset, an API override, or a CT-direction error) and we fix those remotely for a flat £75, and only if it works. No site visit needed for schedule configuration. No fix, no fee. Full pricing →
Usually the same day. A single 30-minute remote session covers the schedule, timezone, connected-apps and CT-direction checks, and the fix applies through the portal in about 60 seconds. We then confirm it behaves correctly on the next charge or discharge window.
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EMS schedule not doing what it should?
We review GivEnergy EMS configuration remotely — checking schedules, API integrations, timezone, CT direction, and firmware to find the exact cause and get your system behaving as expected.
- Independent — not affiliated with GivEnergy Ltd
- Full EMS and schedule audit
- Remote diagnosis, usually same day
GivEnergy support — STS
GivEnergy problems? No fix, no fee.
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 £75 if we fix it, free if we don’t.
Ronald Director, Solar Tech Support
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