First, let’s talk about why voltage optimisation is so important. In the UK, electricity is typically supplied at an average of 242 volts. However, most electrical equipment operates most efficiently at around 220 volts. This discrepancy means that businesses are often supplied with more voltage than they actually need, leading to wasted energy, higher costs, and potential equipment strain. Over time, this overvoltage can increase electricity bills by as much as 8%.
Voltage optimisation steps in as a solution by acting as a buffer between the grid and your equipment, ensuring that only the optimal voltage is supplied. By managing voltage levels, businesses can reduce energy costs, minimise wear on equipment, and contribute to a lower carbon footprint.
Step 1: Assess Your Current Voltage Levels
To begin with, it’s essential to understand your current voltage levels. Most businesses have equipment that relies on a stable power supply, but few are aware of how much voltage they’re actually receiving versus what they need. This is where a voltage audit comes into play.
Using data loggers or smart meters, businesses can monitor their voltage over a set period (typically four to six weeks). These devices provide a comprehensive overview of voltage stability, helping to identify any fluctuations, surges, or dips that could be affecting equipment performance and energy efficiency.
Example: Us here at Powerdown 220, a leading provider of voltage optimisation solutions, recommend a non-intrusive monitoring period to gain a complete picture of your site’s power needs. Our experts say that the data collected allows businesses to calculate potential savings accurately—often down to within a 1% margin. Armed with this data, companies can assess if voltage optimisation would offer measurable financial benefits.
Step 2: Understand Your Equipment’s Voltage Sensitivity
Not all equipment is affected equally by voltage fluctuations. Understanding the difference between voltage-dependentand voltage-independent equipment is key to maximising the benefits of voltage optimisation.
- Voltage-dependent equipment (like motors and traditional lighting) varies its power consumption with voltage changes, making it a prime candidate for savings through VO.
- Voltage-independent equipment (such as modern LED lighting) does not respond to voltage variations, so VO will have less impact on these devices.
By identifying which of your systems are voltage-dependent, you can estimate the energy savings potential more accurately. Voltage optimisation can deliver an average of 8% savings, but for highly voltage-dependent sites, savings could reach as high as 12%.
Step 3: Determine the Right Voltage Optimisation Technology
Once you have a clear understanding of your current voltage supply and equipment needs, it’s time to select the right voltage optimisation technology. Here are a few common options:
- Fixed Voltage Optimisers: These units reduce voltage by a fixed amount, ideal for sites with stable voltage levels and loads.
- Dynamic Voltage Optimisers: These units adjust the voltage in real-time, responding to fluctuations to provide stable power. Dynamic VO systems are best suited for businesses with fluctuating loads or sensitive equipment.
By choosing the right technology, businesses can ensure they’re optimising their voltage effectively and achieving the maximum possible savings.
Real-World Application: Kinnerton Confectionery, for instance, installed a Powerdown220 voltage optimiser and now saves 7.52% on energy bills, along with 40 tonnes of carbon emissions annually. The results speak for themselves: effective voltage management has financial and environmental rewards.
Step 4: Monitor and Adjust
Voltage optimisation isn’t a “set it and forget it” solution. Once installed, it’s essential to monitor the system’s performance and make adjustments as needed. This can be achieved through remote monitoring systems, which many modern VO units offer.
These systems track energy, financial, and carbon savings in real-time, allowing you to see the tangible benefits of voltage optimisation and make any necessary adjustments. The insights gained from this data ensure that your VO unit operates at peak efficiency and continues to deliver savings over time.