Offices, shops could hold answers to South Africa’s power woes
South Africa’s commercial property industry has the potential to ease the country’s power crisis, with enough roof space to generate 4.7 GW of electricity, a new study has found.
Retail, office and industrial properties in the country’s five biggest cities have 68.7-million square meters of rooftops that have no solar panels, according to the study by Gmaven, a South African real estate software and data services company.
Installing solar panels on two-thirds of commercial properties in those cities’ main nodes would cost as much as R55-billion, yet they could generate electricity that leads to R12.3-billion of savings each year, Gmaven said. Just 6.4% of the 41 000 properties it surveyed already have panels in place.
South Africa’s government has cited rooftop solar as one of the solutions to a 15-year power crisis that has worsened to the extent that rotational blackouts have been imposed almost every day this year, the worst of them lasting as as long as 12 hours a day.
Properties held by Resilient REIT, a real estate investment trust, plan to have 68 MW of installed solar capacity by the end of this year, while Growthpoint Properties is aiming for 46 MW by 2026, according to Gmaven.
The study didn’t assess the cost of battery backup to store excess solar power generated during the day.
“Unlike in the residential space, the commercial property sector’s major electricity consumption is during daytime hours,” Gmaven said. “The industry’s peak power needs are broadly matched by peak solar radiation.”
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