Real Estate. Lower your running costs, prove your building's performance.
Your buildings face a mandatory Energy Performance Certificate, your tenants and lenders now ask for green credentials, and your electricity account keeps climbing. Measure where the cost sits, reduce what you can, and prove the rest.
Your EPC deadline has passed. The penalty is R5 million.
South African regulations require certain buildings to obtain and publicly display an Energy Performance Certificate. The obligation applies to privately owned buildings above 2,000 square metres and publicly owned buildings above 1,000 square metres, where the building is used as an office, a place of assembly or a place of instruction. The compliance deadline was 7 December 2025 and has passed.
| Building type | Threshold |
|---|---|
| Privately owned offices, places of assembly and places of instruction | net floor area above 2,000 square metres |
| Publicly owned offices, places of assembly and places of instruction | net floor area above 1,000 square metres |
Non-compliance carries penalties of up to R5 million, imprisonment of up to five years, or both. Compliance across the market remains low, which means a large number of qualifying buildings are currently outside the system rather than inside it. If any building in your portfolio crosses the threshold and has no certificate on display, the exposure is live rather than pending.
An EPC rates your building's measured energy performance against a benchmark for its type. Obtaining one requires twelve months of metered consumption data and an assessment by an accredited body, which is why the process takes planning rather than a single site visit.
Delta Carbon supports your commercial and public buildings through the Energy Performance Certificate process, from consumption data through to certification.
Your electricity account concentrates in three places
In most South African commercial buildings the load concentrates in three places: HVAC, lighting and hot water. That makes your portfolio retrofits predictable in a way industrial work rarely is, because the same interventions apply across most of your assets.
HVAC
HVAC is the largest single consumer and usually the oldest equipment in your building. Chiller replacement, controls and scheduling, and correcting a system that has drifted out of commissioning all reduce your consumption without touching tenant comfort.
Lighting
Lighting is the fastest payback and the easiest to verify, particularly in your common areas, parking and back-of-house where fittings run far longer than occupancy requires.
Hot water
Hot water is the load most often ignored. Heat pumps replace your electric resistance geysers and boilers for a fraction of the energy input, which matters most in hospitality, residential and healthcare assets where hot water demand is constant.
Rooftop solar
Rooftop solar suits your commercial property well, because daytime consumption and daytime generation line up closely. Where the roof and the load profile support it, self-generation reduces both your electricity account and your scope 2 emissions in the same intervention.
You pay for the upgrade. Your tenant sees the saving.
The split incentive is the reason most commercial efficiency work does not happen. Your capital sits with the landlord while the utility saving accrues to whoever pays the bill, so the party who would fund the work is not the party who benefits from it. Left unresolved, your building keeps paying for waste and your green credentials stay unclaimed.
Two things resolve it in practice. The first is measurement, because a verified saving can be apportioned, recovered or reflected in your lease negotiation rather than argued about. The second is funding structure: a financing partner can fund the work and be paid from the verified savings, which removes the capital question from your side of the table entirely.
Cut every building's running cost from one partner
Measure where your portfolio's electricity account is highest, plan the retrofits that pay back fastest, then deliver and verify so the saving shows up on your metered data, not on a promise.
Portfolio position and plan
A GHG inventory across your portfolio, covering purchased electricity as the dominant scope 2 load and the scope 3 categories your investors now ask about, then a costed decarbonisation roadmap that sequences your buildings by opportunity rather than treating the portfolio as one asset.
See carbon accounting and GHG inventory→Retrofit and generate
HVAC, lighting and controls retrofits, heat pump replacement of your electric hot water, and rooftop solar with battery storage where your roof and load profile support it. Delivered outright or funded under an ESCo model so the capital question does not stall the work.
See energy-efficiency retrofits→Certification and recovered cost
Support through your Energy Performance Certificate process, measurement and verification on your retrofit savings, and bill verification across your portfolio, which catches municipal billing errors, tariff misallocation and metering faults that are otherwise absorbed month after month.
See bill verification and performance monitoring→Portfolios like yours are already paying less
Delta Carbon's efficiency and retrofit work, and its bill verification and performance monitoring work, covers multi-site retailers and property portfolios like yours, running on the KAIA and Roots monitoring platforms. Section 12L energy performance measurement and verification has been delivered for industrial and commercial clients, including Consol.
Three moves that lower your portfolio's running cost
Establish which of your buildings carry an obligation.
Which of your assets cross the EPC threshold, which have certificates, and which do not. This is a short exercise with a hard compliance answer at the end of it.
Verify your bills before changing anything.
Portfolio-wide bill verification frequently recovers your cost with no capital spend at all, which funds the credibility for everything that follows.
Retrofit your worst performers first.
The consumption data from step one ranks your portfolio, so your capital goes where the return is highest rather than where the asset is most visible.
Find out which of your buildings are exposed
A consultation establishes which assets in your portfolio need an Energy Performance Certificate, where your consumption is highest, and what a retrofit programme would cost and save. If you have buildings above the threshold with no certificate on display, that is the right place to start.