Tackling the Barriers to Solar Battery Storage in Manufacturing

Tackling the barriers to solar battery storage, and what it takes to move beyond panels on a roof

Solar battery storage adoption in South Africa’s manufacturing sector has grown significantly. But most installations are still operating well below their potential. Here’s why, and what closing that gap actually requires.

Solar energy is gaining real momentum in South Africa. The country recently added over 4,400 megawatts of solar panels, excluding government procurement and utility-scale installations. Much of that capacity sits in the commercial and industrial sectors, driven largely by manufacturers looking to reduce their exposure to grid volatility and rising electricity tariffs.

But most of that capacity is still operating at the surface level. Panels are generating power. That power is being self-consumed. And the more comprehensive energy independence that manufacturers are looking for, through solar battery storage, hybrid systems, and resilient design, remains out of reach for many.

The gap isn’t primarily a technology problem. It comes down to three practical barriers: cost, reliability, and support, according to Eduardo Werninghaus, CEO at WEG Africa. Until all three are addressed together, manufacturers tend to stop at the panel.

Why manufacturers limit their solar investment

Panels coupled to a hybrid solar inverter can supply some of a facility’s lighter operational energy needs. But to power heavier machinery and processes that run around the clock, solar alone has real limitations.

The most obvious is sunlight dependency: there is no generation at night, and cloudy days bring notable dips in output. There’s also the challenge of certain machinery types that require slow starts or experience significant swings in power draw. These load profiles are difficult to manage with a basic solar installation.

Many manufacturers still treat solar as a complementary source, not a viable alternative to grid energy. That’s a rational position given what most installations can actually do, but it’s often also a reflection of limited access to the expertise needed to design and support more comprehensive solar battery storage systems.

Comprehensive solar and hybrid energy solutions are more specialised, says Werninghaus. They require an end-to-end capability across generation, storage, system integration, and ongoing support, and not many providers can credibly deliver across all of those areas.

The three barriers, and why they have to be solved together

The decision to invest in a more comprehensive energy system usually stalls in one of three places: the business case doesn’t hold up, confidence in long-term reliability is low, or there’s no clear support model once the system is running. In practice, these three barriers reinforce each other.

An end-to-end OEM with the right value chain can address all three, and that’s increasingly what separates manufacturers who make the move from those who don’t.

•       Cost: Manufacturers are unlikely to invest in comprehensive energy infrastructure without a clear business case. An end-to-end OEM’s value chain covers equipment, engineering, and the commercial expertise to align with a manufacturer’s specific requirements, including space constraints, load fluctuations, compliance, and deployment complexity. Economies of scale and local manufacturing capability also help reduce cost of ownership over time.
•       Reliability: To justify the investment, manufacturers need confidence that the system will continue to deliver, not just at commissioning, but across its operational life. Reliability depends on having the right components working together: solar panels, BESS (battery energy storage systems), control software, and, where needed, hybrid sources such as generators or steam turbines. An end-to-end OEM can design and integrate these elements with control over components, skills, and system behaviour.
•       Support: Without adequate, responsive support, even a well-designed system can leave a manufacturer exposed. End-to-end OEMs that control their supply chains, especially those with a local manufacturing and service footprint, are better positioned to provide consistent maintenance, parts availability, and skilled intervention when it’s needed.

If you’d like to talk through what a BESS or hybrid system would involve for your site, get in touch with our team.

What an end-to-end energy solution actually looks like

A genuine end-to-end energy solution is built around an OEM that has established capability across the full value chain, from generation and transmission through to distribution, load usage, and storage. That thread of connected products and services is what makes it possible to meet cost, reliability, and support requirements simultaneously, rather than trading one off against another.

In practice, this means a manufacturer working with an E2E OEM gets system design that accounts for their specific load profile and operational requirements, equipment that is engineered to work together rather than patched together from different vendors, and a support model that doesn’t fragment accountability across multiple suppliers.

The result is a system that can be justified financially, trusted operationally, and maintained practically. That’s the combination that allows manufacturers to move from panels on a roof to genuine energy independence.

Solar is an asset, but only when the system is right

Solar is an abundant, cost-effective energy source. For manufacturers, it represents a real opportunity to reduce operating costs, build resilience against grid events, and improve long-term energy planning. But that opportunity is only fully realised when the installation goes beyond the basics.

The manufacturers who are making the most of solar are those who have moved past self-consumption and towards a solar battery storage system that actively manages supply, demand, and storage, with the support infrastructure to keep it performing over time.

That shift doesn’t happen by default. It requires the right OEM, the right system design, and a support model that holds up in practice. When those elements are in place, solar stops being a hedge and starts being a genuine competitive advantage.

Is your facility getting the most from its energy investment?

Whether you’re running a basic solar installation and want to understand what more is possible, or you’re evaluating a comprehensive hybrid energy system for the first time, our team can help you work through the options. Speak to our team to pressure-test a specific application, or become a WEG systems integrator if you’re ready to deliver solar battery storage solutions for your own customers.