Load shedding in South Africa is disruptive, but it is no longer unpredictable. Schedules are published, stages are announced, and most households know roughly which blocks of the day their suburb goes dark. What most of us have not done is take that knowledge and build it into how our gate and garage automation behaves. The usual approach is reactive: the power drops, the gate is wherever it happens to be, and the backup battery is asked to cope. This article is about the opposite approach — configuring the automation so the schedule works for you rather than catching you out.
It is worth stating clearly what this is not. Our load shedding backup guide covers battery sizing and how backup power works, and our battery, solar and generator comparison covers which backup option suits which household. Both are about buying capacity. This article is about timing — what the controller can be set to do at particular moments, and why getting that right often costs nothing at all.
Why Timing Matters as Much as Battery Capacity
A backup battery buys you a certain amount of gate travel, and that amount is finite. What determines how much of it you have left when you actually need it is almost entirely a question of what the gate was doing when the power dropped. A gate that is closed, locked and idle places almost no load on the battery at all — it simply sits there holding its charge. A gate caught mid-cycle has to finish or reverse that travel on battery power, and it will be asked to do it at the worst possible moment, with the driver standing in the driveway watching.
This is the core insight behind scheduling automation around load shedding: you are not trying to make the battery bigger, you are trying to make sure the battery is not being spent on a cycle that did not need to happen in the first place. The same battery that struggles through three or four unscheduled openings can comfortably cover a well-timed day.
What Your Automation Can Realistically Be Scheduled To Do
It helps to be honest about the limits here. Mainstream South African gate motor control boards do not know the load shedding schedule and cannot react to it directly — there is no setting that says "close the gate at 18:00 because stage 3 starts at 18:30". What they do have is a set of time-based functions that, used together, get you most of the way there.
Auto-close and timed-close functions
Available on almost every sliding and swing gate controller sold locally. The interval is usually adjustable from a few seconds up to several minutes. Shorter is more secure and puts less battery at risk, but it will frustrate a household that regularly queues cars through the gate. A setting that closes after a comfortable pause, rather than after the longest possible pause, is usually the right compromise.
Timed auxiliary outputs
Many boards include one or more auxiliary outputs that can be configured to switch on for a set duration or hold a set state. These are commonly used for gate warning lights, but the same outputs can drive driveway lighting on a timer, which is useful when an outage lands at dusk and the approach to the gate would otherwise be dark.
Local schedules on third-party relays
Where genuine time-of-day scheduling is needed, the practical route is a small smart relay wired into the motor's spare auxiliary input, configured with a schedule that runs locally on the device rather than depending on a cloud service. We cover the wiring and platform choices in our smart home integration guide. The important caveat for load shedding specifically: a relay that depends on your home Wi-Fi and router will stop obeying schedules the moment the router loses power, so any schedule you genuinely need during an outage must run locally on the relay itself.
What scheduling cannot do
Scheduling will not make a failing battery work, and it will not rescue a gate whose mechanical condition is poor. If the gate is already heavy on its track or the battery is past its service life, no amount of timing will compensate — the maintenance checklist and a battery check come first.
| Function | What it does | Does it still work during load shedding? |
|---|---|---|
| Auto-close timer | Closes the gate automatically after a set pause | Yes, while the backup battery holds |
| Timed auxiliary output | Switches lights or accessories for a set duration | Yes, on battery, but adds draw |
| Local relay schedule | Fires the gate at a set time of day | Only if the relay runs its schedule locally |
| Cloud/app schedule | Fires the gate from a phone app | No, if router or internet is down |
| Intercom release | Visitor-triggered opening | Depends on the intercom's own backup |
Building a Schedule Around Your Actual Slots
The useful version of this exercise needs four things written down, not guessed at.
- Your real slots, not your impression of them. Pull the actual published schedule for your block and stage. The common mistake is planning around the schedule as it was months ago, or around a neighbour's block rather than your own.
- Which parts are fixed and which move with the stage. Lower stages tend to shift the same blocks around less; higher stages add slots and move them earlier. Plan for the shape of your current stage, but note what changes at the next one up.
- Your recharge window. The gap between the power returning and the next slot starting is the only time your battery gets recharged. Write this down as a number of hours.
- Your pre-slot cut-off. A time, roughly fifteen to thirty minutes before the slot begins, after which nobody opens the gate for anything that can wait.
The Pre-Slot Close
That last item deserves its own section, because it is the one change that produces the biggest practical difference. If the household rule is that the gate is left alone in the half hour before a known slot, then the power drops with the gate shut, locked and idle, the battery near full, and the motor cool. Nothing needs to happen on battery power at all. Anyone arriving home in the first minutes of the outage can still open and close the gate normally on backup, and the battery is not starting that job already depleted by an avoidable cycle.
Combined with a sensible auto-close interval, this usually needs no new hardware whatsoever — it is a household habit plus one menu setting. It is also far more reliable than expecting somebody to be home and watching the clock, because the auto-close handles the case where the gate was opened for a visitor at the worst possible time and nobody went back out to check it.
Settings That Behave Differently During an Outage
| Setting | Normal behaviour | During load shedding | What to do |
|---|---|---|---|
| Auto-close interval | Closes after a set pause | Still works, but every close costs battery | Keep it enabled; shorten slightly at higher stages |
| Piracy/anti-tamper lock | Locks gate against forced pushing | Valuable — gate is unattended in the dark | Leave enabled, never disable for convenience |
| Warning light output | Flashes during gate travel | Extra draw on an already stressed battery | Acceptable; disable only if battery is marginal |
| App/cloud control | Opens from your phone | Usually dead with the router | Keep a remote or keypad as the fallback |
| Manual release | Key-operated disconnect | Last resort if the battery dies | Know where the key is, and test the mechanism |
That last row matters more than most people expect. If the battery does die during a long outage, the manual release is the only way left to get a car out, and it is worth knowing exactly how yours operates before you need it in the dark. Our manual release guide covers the different mechanisms across sectional doors, roller doors and gate motors.
Recharge Windows Between Slots
Every backup battery needs mains time to recover, and the recharge window between two consecutive slots is the whole game at higher stages. A battery that has genuinely been discharged needs several hours to come back properly; a battery that was only lightly used may recover in less. The problem is compounding — if the window is too short, the battery starts the next slot from a lower state of charge, then the one after that from lower still. This is the mechanism behind the short practical battery life we see on properties in high-stage areas, which we cover in detail in our battery lifespan article.
The scheduling implication is straightforward: protect the recharge window the way you protect the slots themselves. Avoid non-essential gate cycles in the hour or so after power returns, and let the charger do its work undisturbed. It is also worth noting that none of this has any effect on your bill — gate automation is not a time-of-use optimisation problem, as we explain in our running cost article. The payoff is reliability and battery longevity, not savings.
Test It Before You Need It
None of this can be verified from the couch. Once your auto-close interval is set and the household understands the pre-slot cut-off, deliberately test it: open the gate, let the auto-close run, confirm it closes fully and re-locks, and confirm the battery indicator reads where you expect. Then do the same with the garage door. It takes ten minutes and it converts a theoretical plan into something you actually know works — which is a far better discovery than the alternative at half past six in the evening.
Frequently Asked Questions
Can a gate motor be programmed to close automatically before load shedding starts?
Not by reacting to the schedule itself — standard control boards do not know it. What they can do is auto-close after a set pause once the gate is open, which means a gate opened at an awkward moment is shut and idle again well before the next outage begins.
Does scheduling automation around load shedding reduce my electricity bill?
No. The control board draws roughly the same continuous standby current regardless of the hour, so shifting gate activity across a time-of-use tariff saves almost nothing. The benefit is reliability and battery preservation, not cost.
How long does a gate motor backup battery need to recharge between slots?
Several hours of mains supply to recover properly after a real discharge, and longer if it started the recharge already partly depleted. Short windows between slots are why batteries in high-stage areas age quickly.
Should I turn my gate motor off during load shedding?
Generally no. It stops the charging circuit working when power returns, disables intercom or app access sharing the same supply, and risks leaving the gate in an unknown state. Leave it powered and fix the timing instead.
A backup battery is what gets you through an outage, but the schedule is what decides how much of it you use up getting there. Set the auto-close, agree a pre-slot cut-off with the household, and protect the recharge window — three changes that cost nothing and usually make the difference between a gate that rides out load shedding and one that does not.