Open Access Energy’s (OAE) Energypro wheeling software platform has completed September’s allocation and settlement for SolarAfrica’s 114 MW SunCentral 1. It divided 7.57 GWh of energy among three commercial and industrial customers, each on its own contract. According to the companies, this makes SunCentral 1 the first utility-scale, multi-buyer wheeling project in Africa to be settled on locally developed, purpose-built software.
Most wheeling arrangements link one plant to one buyer. SunCentral 1, which reached commercial operation in September, shares a single plant’s output across a group of customers on the national grid, each with its own power purchase agreement (PPA), pattern of use and share of the electricity.
Energypro was built by the South African company to settle that kind of arrangement. Each month, the platform takes in the plant’s generation, each customer’s consumption at its delivery points and the terms of each customer’s PPA with SolarAfrica. It then allocates the plant’s electricity across the customers, starting with those who have fixed-volume commitments. It prepares the nomination information SolarAfrica submits to Eskom and, at month-end, produces the settlement data SolarAfrica uses to bill each customer.
That month-end process is central to the arrangement. The parties need to agree how much of the plant’s electricity went to each customer, on which terms and what each party owes. As privately generated electricity is wheeled to multiple buyers, systems that allocate, reconcile and settle it are becoming increasingly important to project viability.
“South Africa is building a new electricity market, and it shouldn’t have to run on software designed for someone else’s grid,” said Gerjo Hoffman, CEO of Open Access Energy. “We built Energypro here, for these rules. SunCentral 1 proves it works at scale.”
“Energisation is the milestone everyone sees, and we were proud to mark it. But the real test of a wheeling deal comes every month-end, when the customer’s bill has to reflect exactly what was promised,” Hoffman added. “Every unit of electricity must be accounted for, with every party working from the same number. That is what Energypro does.”
OAE does not own, trade or sell electricity. It acts as a neutral party between buyers and sellers, running transactions between the power plant, the grid and the customers it supplies.
“As an Independent Power Producer that sells wheeling, we rely heavily on reliable software to serve our commercial and industrial customers as we continue to bring more of our utility-scale generation sites online,” said Vincent Labuschagne, chief operating officer at SolarAfrica.
“Open Access Energy has been excellent in providing day-to-day digital services and support. In addition, they worked alongside our teams to tailor Energypro to our business models and transaction flows, greatly helping us take the lead in providing wheeling to our customers.”
SunCentral 1 is the first of three 114 MW plants in the 342 MW first phase of SolarAfrica’s planned 1 GW SunCentral development. SunCentral 2 is in the later stages of construction, and construction of SunCentral 3 is expected to begin shortly.