Technical FAQs 4

Should I add solar panels to my existing system?

If you add solar panels to an existing system, you can increase your solar electricity generation, extend the life of your installation, and create further savings on utility energy costs.

How can on-site solar PV & energy storage improve sustainability?

To achieve sustainability goals while meeting the increasing electricity demands of electrification, organizations are pairing on-site solar PV generation with on-site energy storage. These systems, which are considered as “behind-the-meter” (BTM) systems, allow facilities to maximize the benefits of on-site renewable generation.

How much does it cost to add more solar panels?

The cost of adding extra solar panels varies based on several factors, including the number of panels, the installation’s complexity, and if any other upgrades are required. Additional solar capacity typically costs between $800 and $1,600 per panel, though every project is different.

Can on-site storage be used alongside solar PV?

If a utility restricts the exports from a facility to the grid, the use of on-site storage alongside solar PV can provide a solution to avoid costly infrastructure upgrades, thus increasing the feasibility of larger on-site PV installations.

Photovoltaic Storage & BESS Technical Resources


Expert insights on photovoltaic energy storage systems, BESS solutions, mobile power containers, EMS management systems, commercial storage, industrial storage, containerized storage, and outdoor power generation for South African and African markets

Add solar panels to on-site energy

Welcome to our technical resource page for Add solar panels to on-site energy! Here, we provide comprehensive information about photovoltaic energy storage systems, BESS solutions, mobile power containers, EMS management systems, commercial storage, industrial storage, containerized storage, and outdoor power generation. Our professional engineering solutions are designed for residential, commercial, industrial, and utility applications across South Africa and Africa.

We provide professional photovoltaic storage and BESS solutions to customers across South Africa, including Western Cape, Gauteng, KwaZulu-Natal, Eastern Cape, Free State, and neighboring African countries including Namibia, Botswana, Zimbabwe, Mozambique, Zambia, Tanzania, and Kenya.
Our expertise in photovoltaic energy storage systems, BESS solutions, mobile power containers, EMS management systems, commercial storage, industrial storage, and containerized storage ensures reliable performance for various applications. Whether you need residential photovoltaic storage, commercial BESS systems, industrial energy storage, mobile power containers, or utility-scale photovoltaic projects, WALMER ENERGY has the engineering expertise to deliver optimal results with competitive pricing and reliable technical support.

How Onsite Solar Can Transform Your Energy

Dec 5, 2025 · What is onsite solar? Onsite solar is an asset installed in the same location where the energy generated will be consumed. For each

Onsite Solar | ENGIE Impact

1 day ago · On-site Solar offers a holistic solution for organizations seeking multi-site onsite solar implementation. It provides numerous benefits,

The 4 Steps To Deploying Onsite Energy Systems

Mar 27, 2024 · Onsite energy systems, often combining solar, batteries, wind, fuel cells, and other technologies, allow companies to generate and store their own power right at their facilities.

The 4 Steps To Deploying Onsite Energy

Mar 27, 2024 · Onsite energy systems, often combining solar, batteries, wind, fuel cells, and other technologies, allow companies to generate and

Installation of Renewable Energy

Here are the most common onsite renewable energy options: Solar Electricity: Solar panels are ideal for businesses with high daytime electricity use and sun-exposed roofs or other available

On-site Photovoltaic for prosumer businesses | Enel Group

Aug 27, 2025 · On-site photovoltaics: what it is and how it works Solar panels capture sunlight and transform it into direct current; inverters then convert it into alternating current and make it

Lightweight Roof Solar: Navigating Dead Load Limits and

1 day ago · This comprehensive guide addresses the critical challenge of installing solar on low-load commercial roofs (TPO/metal). Learn why traditional glass PV exceeds dead load limits

Onsite Solar | ENGIE Impact

1 day ago · On-site Solar offers a holistic solution for organizations seeking multi-site onsite solar implementation. It provides numerous benefits, including environmental friendliness by

How the benefits of onsite solar and storage are redefining energy

Dec 1, 2025 · Modern solar panels typically have lifespans of 25–30 years, and while maintenance and inverter replacements may add minor costs over time, these are generally

How Onsite Solar Can Transform Your Energy Strategy | Trio

Dec 5, 2025 · What is onsite solar? Onsite solar is an asset installed in the same location where the energy generated will be consumed. For each kilowatt-hour (kWh) the onsite solar asset

Why it may be worth it to add solar panels to your existing

Feb 10, 2025 · If you add solar panels to an existing system, you can increase your solar electricity generation, extend the life of your installation, and create further savings on utility

Maximizing the Benefits of On-Site Renewable Energy

Nov 15, 2024 · To achieve sustainability goals while meeting the increasing electricity demands of electrification, organizations are pairing on-site solar PV generation with on-site energy

Onsite Solar Panels for Businesses: A Smart Way to Power

Jul 11, 2025 · Businesses, no matter the size, are rethinking how they fuel their operations, and solar panels have become a viable solution. Rising energy costs, carbon reduction targets,

WALMER ENERGY Engineering Support Team

Engineering Support for Photovoltaic Storage & BESS Projects

Our certified engineering team provides comprehensive technical support for all installed photovoltaic storage and BESS systems. From initial system design and engineering to ongoing maintenance, optimization, and performance monitoring, WALMER ENERGY ensures your photovoltaic storage and BESS solutions operate at peak efficiency throughout their lifecycle, with 24/7 monitoring available for critical industrial and commercial applications.

Contact Engineering Support

Stay Updated on Photovoltaic Storage & BESS Technology

Subscribe to our technical newsletter for the latest innovations in photovoltaic energy storage systems, BESS solutions, mobile power containers, lithium batteries, EMS management systems, and industry developments across Africa. Stay informed about cutting-edge solutions in renewable energy technology.