Modern electrical systems rarely operate on a perfect 50 Hz sine wave. IT equipment, LED lighting, EV chargers, and industrial drives all introduce harmonics, unwanted frequencies that distort voltage and current across your network.
Unchecked harmonics cause overheating, wasted energy, equipment malfunction and serious safety risks. Managing them is essential for stable, efficient and reliable electrical performance. In severe cases, harmonic distortion can overload neutrals and transformers, increasing heat and failure risk.
Who Should Address Harmonics?
We install power-quality analysers at key points in your electrical network to capture harmonics, voltage, current and events over a representative period. The data is compared against industry standards to pinpoint where distortion is coming from and how it is moving through your system.
Using these insights, we assess the best options, such as passive or active filters, PFC adjustments or configuration changes, and consider future site plans to avoid creating new issues later. You receive clear recommendations with expected benefits, costs and risks, prioritised by impact and value.
We work with your contractors or preferred suppliers to deliver the agreed solutions, commission the equipment and re-measure performance to confirm improvements. You also receive full documentation for compliance and records, with optional ongoing monitoring to flag new issues before they escalate.
Reduces overheating, stress and premature failures.
Stabilises voltage, reduces nuisance tripping and ensures smooth operation.
Cleaner waveforms improve energy performance and cut unnecessary consumption.
Prevents neutral overloads, electrical noise and damaging surges.
Our team prioritises your satisfaction, providing personalised solutions and expert guidance to ensure a seamless experience that exceeds expectations every time.
Join our extensive network of existing customers who have benefited from substantial cost savings through tailored solutions and strategic approaches.
Our proven strategies and dedicated support has already helped our existing customers save more than £3.2m on their energy bills. Join us and discover how much you could save.
Electrical harmonics are voltage or current distortions that occur when non-linear loads draw power from the supply. These distortions alter the normal waveform, causing inefficiency and additional stress on electrical equipment. Common sources include variable speed drives, computers, LED lighting, and other electronic devices.
Harmonics can cause overheating in cables, transformers, and motors, reducing their lifespan and reliability. They also lead to nuisance tripping of circuit breakers, inaccurate meter readings, and increased energy losses. Left unaddressed, these issues can raise operating costs and result in costly unplanned downtime.
Detection begins with a detailed site survey and waveform analysis. Our engineers measure voltage and current levels across the network to identify deviations from the ideal sinusoidal pattern. This diagnostic step allows us to determine the severity, sources, and specific frequencies of harmonic distortion.
After assessment, solutions may include installing passive or active harmonic filters, balancing loads, or adjusting equipment settings. In some cases, modifying supply connections or replacing older non-compliant equipment helps prevent distortion. We tailor each solution to the site’s unique electrical profile for the best long-term outcome.
Mitigating harmonics improves energy efficiency, reduces equipment wear, and lowers maintenance costs. It also helps maintain voltage stability, prevents overheating, and enhances overall power quality. For many businesses, this translates into smoother operations, fewer faults, and measurable cost savings.
We recommend conducting an assessment whenever new equipment is installed or energy usage patterns change. For larger or more complex facilities, annual or bi-annual reviews help ensure ongoing compliance and performance. Regular testing allows early detection of emerging issues before they impact operations or safety.
