14 Oct 2026
Eskom said solar registration is free. It isn't.
There is a particular kind of South African announcement that sounds generous right up until you read the fine print. The headline says "fee waiver extended indefinitely". The fine print says "mandatory tariff migration, smart meter installation at your cost, new cabling requirements, and a deposit recalculation based on current electricity prices that may run to five or six figures." Eskom's indefinite extension of its solar PV registration fee waiver is, on the surface, welcome news. Underneath the surface, it is one of the more creative pieces of small-print engineering the utility has produced in recent memory — and for property owners across South Africa, the implications are significant enough to warrant a very careful read before anyone signs anything.
The waiver applies to eligible solar PV systems up to 50 kVA connected directly to Eskom's distribution network. The registration fee itself is waived — that part is accurate. What is not prominently advertised is the cascade of associated costs that registration triggers, several of which only become apparent after the process is already underway. By that point, the customer has limited options beyond paying them.
To understand why solar registration is more complicated than it sounds, you need to understand how Eskom's residential tariffs work. There are currently three of them, and the one you end up on after registration is not the one you would choose if given a free choice.
The critical issue is this: the majority of Eskom's direct-supply residential customers are on the Homelight prepaid tariff, paying only for energy consumed with no fixed monthly overhead. The moment they register a solar PV system, they are automatically migrated to the Homeflex tariff — which carries fixed monthly costs that they previously had no obligation to pay. This migration is not presented as a choice. It is a condition of registration.
Beyond the tariff migration, solar registration with Eskom sets off a series of additional costs that are, according to those who have been through the process, often not disclosed clearly upfront. Here is the complete picture:
The deposit recalculation is the sleeper cost in this list — the one that catches most property owners completely off guard. Here is why: when you first connected to Eskom, you paid a deposit equivalent to three months of estimated electricity consumption at the rates in effect at that time. If that was twenty years ago, your deposit was calculated at a fraction of today's electricity tariff. The moment you register a solar PV system and sign a new Eskom supply agreement — which registration requires — your deposit obligation resets to current prices. Twenty years of electricity price increases, applied to your deposit, at once.
If you are a homeowner connected directly to Eskom's network and you currently have a solar PV system installed but unregistered — you are not alone, and you are not necessarily in an untenable position. The question of whether to register is a genuine cost-benefit calculation, not a simple compliance checkbox.
The practical implications of registering include: migrating to Homeflex, paying to install a smart meter and meter box, signing a new supply agreement and paying the updated deposit. Against that, you gain the ability to feed excess solar energy back to the grid and receive a credit — the so-called "wheeling" benefit that registration theoretically enables. Whether that credit justifies the upfront cost depends entirely on your system size, your consumption patterns, and how much excess energy you actually generate.
For homeowners on Homepower postpaid meters who are already paying a fixed monthly charge, the tariff migration cost is less dramatic. For those on Homelight prepaid meters — the majority of Eskom's residential customer base — the migration adds a new and permanent fixed monthly obligation that did not previously exist. Before registering, calculate what the Homeflex tariff will cost you monthly versus what you're paying now, and compare that ongoing differential against any anticipated feed-in benefit.
For owners of commercial property — warehouses, factories, retail centres, office parks — the solar registration picture is considerably more complex and the financial exposure is correspondingly higher. Commercial properties typically have significantly larger electricity consumption profiles, which means the deposit recalculation at current commercial electricity rates can run to very substantial amounts.
The agricultural sector faces the sharpest end of this — with potential deposit recalculations exceeding R100,000 for high-consumption farming operations — but commercial property owners in industrial and retail categories should not assume they are comfortably below that threshold. A busy warehouse with three-phase power and significant equipment running continuously may find its deposit recalculation lands somewhere uncomfortable.
For commercial property investors specifically, this creates a due diligence question that didn't exist two years ago: if you are acquiring a commercial property where the seller has an unregistered solar installation, you need to understand the potential registration cost exposure before you close the deal. That liability may sit with the new owner, and it belongs in your acquisition analysis.
Property investors — particularly those with portfolios spanning multiple residential, commercial or agricultural properties — face the most nuanced calculation of the three groups. Solar installations have become a genuine selling point and a value-add feature for rental properties at all levels of the market. Tenants increasingly factor power security into their leasing decisions. But the registration question complicates the investment case in several ways.
First, an unregistered solar system creates ambiguity in the property's energy compliance profile — which matters when selling, when applying for certain financing structures, and when attracting institutional or corporate tenants who require documentation of energy infrastructure. Second, the costs of bringing an unregistered system into compliance are not trivial, and if those costs have not been factored into the acquisition price or the rental yield model, they represent an unexpected expense on the investment.
Third — and this is the most immediately actionable point for investors — solar as a value driver needs to be assessed net of the full registration cost, not gross of it. An R80,000 solar installation that adds R600 per month to achievable rent looks excellent on paper. The same installation plus R25,000 in registration-related costs changes the payback period and the return on investment meaningfully. Build the full cost into the model, including the possibility of a deposit recalculation, before making any decisions.
