Enerthia Energy works across four areas — Energy Consultancy, Business Development, Product & Service Endorsement, and Funding. This one sits in the consultancy space: rooftop solar registration is paperwork that protects an asset a business already owns, and the free window closes on 30 September 2026.
- South Africa has passed 8.3 GW of installed rooftop solar, most of it on commercial roofs.
- Registration is free until 30 September 2026, for systems up to 50 kW.
- Eskom will not automatically fine or disconnect anyone who has not registered.
- The real exposure is the insurance claim, not the fee.
What is rooftop solar registration, and who has to do it?
It is the formal declaration of a grid-tied solar system to the distributor that supplies the property. Eskom requires registration of grid-connected rooftop systems below 100 kW, and until 30 September 2026 it has waived the registration fee for systems up to 50 kW, having extended that window by six months from the end of March. A smart meter comes at no cost under the same process — worth up to R10 000 urban, R36 000 rural.
The reason it catches businesses out is framing. A plant bought during load shedding felt like equipment: a private purchase, a line on the asset register. But once it is connected on the same side of the meter as the utility supply, it is part of the distribution network, and the distributor wants it on record.
What happens if a system is not registered?
Less than most owners fear, and more than they realise. Eskom has confirmed it will not automatically fine or disconnect customers for failing to register, and it has dropped its earlier requirement that a registered professional sign off every installation. Nobody is coming to throw a switch. The fee simply returns once the waiver lapses, and the system stays undeclared.
The cost lands elsewhere. An undeclared generating asset has no paper trail, and the moment an underwriter, a buyer or a lender needs that trail, its absence stops being theoretical.
Which documents does a rooftop solar registration need?
The core file is short: a Certificate of Compliance, an inverter test certificate, and a test report for the installation. Insurers routinely ask for more — the full invoice listing panel brands, types, sizes and quantities, the inverters and batteries, and, where the roof carries load, a structural engineer’s certificate.
Where the application goes depends on who supplies the property. An Eskom-supplied site applies to Eskom. A site in a municipal supply area goes through that municipality, which runs its own forms and requirements, and those differ from town to town. It is the same split that governs municipal grid connection in South Africa, and where multi-site portfolios lose the most time.
How does registration affect insurance, resale and refinancing?
This is what decides whether the exercise is worth an afternoon. Insurers have changed how they look at these systems. Marius Kemp, Head of Personal Underwriting at Santam, put it plainly: insurers are no longer covering electrical upgrades, they are underwriting decentralised power plants. A rooftop array carries fire risk, structural load and a live interface with the grid, and underwriters price that against evidence — the same evidence registration asks for.
Resale and refinancing follow the same logic on a longer fuse. A building changes hands, a lender refinances, a tenant runs due diligence before a long lease. Somebody asks for the documents on the solar plant. An undocumented generating asset does not lift the value of that building; it raises questions, and questions cost time. The same discipline applies to the contractual side of any generation on a property, including an electricity wheeling arrangement across a property portfolio.
Most of that 8.3 GW went up fast, and it went up on shopping centres, warehouses and farms rather than household roofs. For one building the file is an afternoon. For a property group with fifteen sites across three municipalities, it is a project that needs an owner. That is the kind of work our energy consultancy does — taking an existing asset and making it documented, compliant, insurable and transferable. Enerthia also supports business development, endorses proven products and service providers, and funds projects through a network of 40 renewable energy investment partners with capacity up to R10 billion.
If the panels are already on the roof, this week is about the paperwork, not the plant.