Heidelberg · Lesedi Local Municipality
Inverter & Backup Power Installation in Heidelberg
Inverters, lithium batteries and generator changeover systems installed and certified across Heidelberg.
- Work done to SANS 10142-1 by a registered person
- Same-day callouts in Heidelberg
- Written quote before any work starts
Whether you want to ride out an outage or run through a full day without supply, we size and install inverter and battery systems in Heidelberg that do exactly what you asked for — no more, no less.
Known for a heritage town on the south-eastern edge of Gauteng serving surrounding farms, industry and the N3 freight corridor, Heidelberg keeps our teams busy across every kind of installation from single plug points to three-phase distribution.
Because Heidelberg is supplied by Lesedi and Eskom (supply area varies) and falls within Lesedi Local Municipality, there is a clear line between the network's responsibility and yours. It stops at the point of supply. We will tell you honestly which side of that line your fault sits on before you spend money on a private electrician for a network problem.
Backup Power & Inverters services we provide in Heidelberg
Load assessment
We measure what you actually run and tell you what it costs to keep each of it alive — before you commit to a system size.
Inverter installation
Correctly rated inverters installed with proper AC and DC protection, isolation and labelling.
Lithium battery banks
Battery sizing for real autonomy, with correct ventilation, mounting, fusing and communications to the inverter.
Essential-loads sub-board
A separate backed-up board so the circuits that matter stay live and the rest do not drain your battery.
Generator changeover
Manual and automatic changeover panels wired so that back-feeding into the network is impossible.
UPS for offices & equipment
Protecting tills, servers, access control, gates and medical or lab equipment through outages and dips.
Solar-ready installation
Systems wired so panels can be added later without replacing the inverter or redoing the board work.
Repairs to existing systems
Fault finding on inverters that trip, overheat, alarm or no longer charge, and replacing failed batteries.
What we see in Heidelberg
Decades of small alterations
Very few older properties in Heidelberg still match their original circuit layout. Extensions, converted garages, replaced geysers and DIY additions accumulate, and each one leaves the installation slightly further from what anyone documented. We spend as much time working out what was done as we do fixing what failed — which is why a proper circuit schedule is part of our handover.
Business premises and trading hours
With the amount of commercial activity in Heidelberg, a lot of our work here has to happen around someone's trading day. We schedule shutdowns outside business hours where we can, isolate only what we must, and keep the parts of the installation that pay the bills running while we work.
Long service runs and standby supply
Properties around Heidelberg sit on larger stands, which means long cable runs to outbuildings, pumps, boreholes and gates. Voltage drop over distance is a genuine issue here, and so is lightning — long overhead runs act as an invitation. Correct cable sizing, earthing and surge protection matter far more on these properties than they do on a small suburban stand.
The compliance side, explained plainly
Two documents decide whether a solar or inverter installation in Heidelberg is legal, insurable and safe to leave running. Most of the complaints we are called in to fix come down to one of them being missing.
An electrical Certificate of Compliance
Required for every solar or inverter installation regardless of size, because connecting one alters your electrical installation. It is also the first document an insurer asks for after a fire or lightning claim. Only a registered person may issue it, and only after testing the installation.
SSEG registration with Lesedi and Eskom (supply area varies)
Any system connected to the grid — even one that never feeds power back — must be registered as small-scale embedded generation with your supply authority. Registration needs a compliant inverter, a single-line diagram and your COC. A genuinely off-grid system with no grid connection does not need registration, but still needs a COC.
Municipal fees, timelines and any registration amnesties change regularly. We confirm the current position with Lesedi and Eskom (supply area varies) as part of every quote rather than quoting you last year's rules.
How it works in Heidelberg
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1
Site visit & load assessment
We look at your roof, your board and your actual consumption — not a generic package.
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2
Written proposal
System size, components, expected output, what it will and will not run, and the full price.
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3
Installation
Mounting, DC and AC work, board integration and commissioning, usually within two to four days.
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4
Certification & registration
COC issued, documentation handed over, and SSEG registration prepared where the system is grid-tied.
Backup Power & Inverters in Heidelberg — your questions answered
What can I run on an inverter in Heidelberg?
That depends entirely on size. A modest system comfortably covers lights, Wi-Fi, TV, gate motor, alarm and a fridge. Geysers, stoves, kettles, tumble dryers and pool pumps are heavy loads that push you into a much larger and more expensive system — we will show you the numbers either way.
Does an inverter installation need a COC?
Yes. Connecting an inverter alters your electrical installation, so it requires a Certificate of Compliance. Insurers routinely ask for it after fire or surge claims, and a system without one can leave you exposed.
Can I add solar panels later?
Yes, provided the inverter is chosen with that in mind. We size and wire systems in Heidelberg so panels can be added without replacing the core equipment — worth doing even if solar is a year or two away.
How long do batteries last?
Modern lithium batteries are typically rated for thousands of cycles and come with multi-year warranties. Lifespan depends on depth of discharge, temperature and how the system is configured — a badly set-up system ages a battery far faster than the datasheet suggests.
Can you fix a system another company installed?
Yes. We inspect, test and report on what is there, then quote the corrective work. Common problems we find are undersized cabling, missing DC protection, no changeover and no certification.
Is there a callout fee for Heidelberg?
There is a callout and diagnostic fee for fault finding, which we tell you before we are dispatched. For quoted installation work the site visit is normally rolled into the quote. Either way you know the number before anyone gets in a vehicle.
Other services we provide in Heidelberg
Everything below is available in Heidelberg from the same team, on the same terms.
Electrician
Registered electricians on call across Gauteng
Learn moreResidential Electrician
Home electrical work done safely and signed off properly
Learn moreCommercial Electrician
Electrical contractors for offices, retail and hospitality
Learn moreIndustrial Electrician
Plant, motors and three-phase distribution
Learn moreSolar Installation
Grid-tied, hybrid and off-grid solar, installed and certified
Learn moreElectrical COC Certificate
Inspection, testing and certification by a registered person
Learn moreEmergency Electrician
24-hour callouts for electrical emergencies
Learn moreBackup Power & Inverters elsewhere in Gauteng
We cover these areas from the same base, so response times are similar.
Need backup power & inverters in Heidelberg?
Call now for an arrival time, or send the details and we will quote you.