What is the ideal energy balance between various energy resources? Should we embrace renewable energy, and phase out fossil fuels entirely? Would this approach be able to meet the country’s growth needs? The halted nuclear build programme promises 9,6 GW of power, but can the country afford it?
The German approach has seen a total disruption to the role of traditional baseload suppliers, which are effectively now relegated to being top-up suppliers for when renewables companies cannot meet demand due to low solar irradiance or calm winds. The addition of rooftop and embedded power generation systems has resulted in traditional large utility business models seeming suddenly outdated.
This is perhaps reflected in the more than 50% reduction in share prices over the last two years for the two largest utilities in that country.
Upon reflection, the South African Independent Power Producers (IPPs) model has emerged as quite effective. Prospective power producers bid for 20-year periods at a fixed price. With this model, the country at least knows what it has to deal with and can plan accordingly.
Unfortunately, now even that IPP model is in some doubt, after former Energy Minister Mmamoloko Kubayi told IPPs to accept less than 77c per kWh, if they want to secure power purchase agreements.
However, as a solution, there is also the fact that building power plants is a tool to catalyse industrial development. Coal fired power plant Medupi, for instance, injected significant investment into the economy, and we do require some excess capacity to facilitate economic growth.
The energy debate tends to become polarised into the renewables-or-nothing camp and the big baseload, monopoly state-owned enterprise camp. To say it’s an either/or question is a little simplistic.
There is a balance to be struck. Every electricity source has a role to play. Solar, especially in South Africa, is a no-brainer, we are endowed with some of the best resources on the planet. Our sunlight is dependable. A solar farm in the Northern Cape can supply a steady, reliable stream of power that can be fed into the grid. It is also scalable, and storage of renewable power is becoming more feasible as batteries become more economically efficient.
If we could find policy certainty, an optimal energy mix would probably involve several large anchor power stations, with a significant renewables component. Gas also has a role to play. The proposed African Renaissance Pipeline has yet to materialise, but what few realise is that gas doesn’t require pipelines thousands of km long. Gas is a commodity. It can be purchased on the global market and shipped in.
At Medupi and Kusile, not much of the core technology is home grown. Most of the investment in capital equipment is in hardware sourced from overseas.
Even with renewable energy, this is the case, if one considers the components that go into a wind power station, the turbines come from overseas.
As far as operations and maintenance goes, increasingly wind farms are operated online from control rooms situated a large distance from the site including overseas. In the rare case of a malfunction, a staffer monitoring a screen in Europe can pick up a phone and send out a local technician. There aren’t many careers in that.
South Africa should use the opportunity of the current foreign direct investment in power plants – coal fired and renewable – to grow local expertise and build a power technology industry.
In conclusion, there is no silver bullet supply solution for the South African energy situation. We will succeed by choosing the energy mix that best suits us and our economy but we need a functional policy environment and transparent governance processes to enable this.