Peak load

What is peak load? It is the situation when a high demand for electricity arises at the same time. Think of the evening hours when households are cooking, heat pumps are turning on and electric cars are being charged at the same time. The power grid then has to supply much more than average in a short period of time, leading to pressure and possible failures.

Bob Hermans

Bob Hermans

19/9/2025
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Peak loads can cause higher costs for businesses and households and require continuous investments in the power grid. Smart management of these moments is therefore essential for efficient and sustainable energy use. Frax supports this with innovative Battery Energy Storage Systems (BESS), which enable you to get a grip on your consumption and better absorb peaks.

Peak load and the impact on efficiency

The power grid is designed for average demand, not extreme peaks. When peak loads occur, the system becomes unbalanced and functions less efficiently. This can lead to voltage differences, capacity constraints and higher costs. For grid operators, it means expensive and time-consuming grid reinforcement, while the use of less renewable resources sometimes becomes unavoidable. Thus, peak load delays the path to a fully sustainable energy system.

This is how you keep peak load under control

You can't always prevent peak loads, but you can manage them. Understanding your consumption helps to shift or temporarily absorb peaks. Energy storage plays a key role here. With Frax's BESS solutions, you store energy and use it during peak moments, a process also known as peak shaving. That way, you reduce your grid draw when the pressure is greatest.

Also curtailment - the temporary storage or switching off of excess energy - prevents unnecessary load on the grid. Frax offers practical plug-and-play solutions for this, from Indoor and Cabinet to a robust battery container. This allows you to keep peak loads manageable while working towards a more stable energy system.

Causes of peak load in the power grid

The growth of electric vehicles, heat pumps and induction cooking creates higher and concentrated power demand. During cold or busy periods, these peaks increase rapidly. In addition, the deployment of solar and wind energy leads to moments of surplus, followed by new demand peaks. This mismatch between generation and consumption increases the pressure on the power grid.

Future of peak load in a sustainable energy system

As society continues to electrify, peak load energy becomes more common. Grid expansion alone is not enough; smart solutions are needed. Energy storage and peak shaving make it possible to smooth peaks and make better use of renewable energy. Frax supports this with scalable systems from compact Indoor and Cabinet solutions to large-scale Container and Elion all designed to completely unburden installers.

Ready to tackle peak load smartly?

Peak load is becoming an ongoing challenge. With Frax's plug-and-play Battery Energy Storage Systems, you maintain control, reduce costs and contribute to a stable and sustainable grid. Whether you choose Indoor, Cabinet, Container or a specialized Battery Container, you'll find the right solution at Frax. Get in touch to find out how we help you control peak loads smartly.

This post was last updated on: 

18/9/2025

Bob Hermans

Founder & CEO

After being active in the energy market for more than a decade, I decided to found Frax in 2023. With Frax, I want to support installers with smart, plug-and-play battery storage systems that really make a difference. My passion lies in renewable energy and innovation, and I believe that simple, reliable solutions are the key to a future with more efficient energy use.

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