Voltage Optimisation: Could Your Business Be Using More Electricity Than It Needs?

With electricity costs remaining a significant consideration for UK manufacturers and commercial businesses, finding ways to improve energy efficiency continues to be an important priority.

While solar PV, LED lighting and energy monitoring are often at the forefront of energy-saving projects, voltage optimisation is another technology that can offer opportunities to reduce electricity consumption in suitable buildings.

For factories, warehouses and commercial premises, understanding the voltage being supplied to electrical equipment could reveal opportunities to improve efficiency and reduce operating costs.

What Is Voltage Optimisation?

Voltage optimisation is an electrical energy-saving technology designed to regulate and, where appropriate, reduce the voltage supplied to equipment within a building.

In the UK, the nominal low-voltage supply is 230V, although the actual voltage delivered to a site can vary within permitted limits.

Where incoming voltage is consistently higher than equipment requires, some electrical loads may consume more energy than necessary.

A commercial voltage optimisation system can regulate the incoming voltage to a more suitable level, potentially reducing energy consumption across compatible equipment.

However, the savings depend heavily on the type of electrical loads connected and how they respond to changes in voltage.

Why Industrial Energy Consumption Matters

Manufacturing facilities and large commercial buildings can have substantial electrical demand, with machinery, motors, lighting, ventilation and other equipment operating for extended periods.

Even relatively small improvements in energy efficiency can be valuable where electricity consumption is high.

Potential benefits of a correctly specified voltage optimisation installation can include:

• Reduced electricity consumption on suitable voltage-dependent loads
• Lower electricity operating costs
• Improved voltage regulation
• Reduced energy wastage
• Potential reduction in associated carbon emissions
• Support for wider energy-efficiency initiatives

Not every electrical installation will achieve the same results, making an initial assessment essential before considering an investment.

Is Voltage Optimisation Suitable for Every Building?

One of the biggest misconceptions surrounding voltage optimisation systems is that reducing voltage automatically produces significant savings across all electrical equipment.

In reality, modern manufacturing facilities often contain variable-speed drives, electronically controlled machinery, LED lighting and other equipment that may already regulate their own power consumption.

These loads may deliver little or no energy saving from a reduction in supply voltage.

Other equipment, particularly certain voltage-dependent loads, may offer greater opportunities.

This is why reviewing a site’s electrical demand, incoming voltage and connected equipment is important when determining whether voltage optimisation is commercially worthwhile.

Assessing the Potential Savings

Before installing a voltage optimisation system, businesses should understand how their existing electrical infrastructure operates.

An assessment may include:

• Monitoring incoming supply voltage
• Reviewing electricity consumption and demand
• Identifying major electrical loads
• Assessing equipment operating requirements
• Reviewing existing LV distribution infrastructure
• Evaluating potential energy savings
• Considering installation requirements and downtime

This information can help determine whether voltage optimisation is appropriate and whether the expected savings justify the investment.

Supporting Industrial Energy Efficiency

At QUEST Electrical, we recognise that effective energy-saving projects should begin with understanding how electricity is being used rather than assuming a particular technology will deliver savings.

Our experience in industrial electrical installations, LV switchgear, power distribution and energy monitoring allows us to assess voltage optimisation opportunities alongside the wider electrical requirements of a facility.

For suitable commercial and industrial sites, voltage optimisation can form part of a broader energy-efficiency strategy alongside LED lighting upgrades, power factor correction, solar PV and electrical energy monitoring.

As businesses continue to look for ways to control operating costs, assessing existing electrical infrastructure could be an important step towards identifying achievable energy savings.

Considering voltage optimisation for your factory, warehouse or commercial premises? Contact QUEST Electrical to discuss your existing electrical supply and potential energy-saving opportunities.

Find out more about our commercial and industrial Voltage Optimisation installations.