Commercial solar should reduce operating costs and strengthen your business. But if your site’s electrical environment is working against it, even a well-designed solar system may produce less energy than expected.
Huon Hoogesteger of Smart Commercial Energy recently spoke with Aaron Grant of Qub about the hidden commercial impact of poor power quality. Their discussion explored how electrical issues can increase energy consumption, shorten equipment life and restrict solar generation, as well as how advanced monitoring can turn complex data into practical business decisions.
Power quality describes the condition of the electricity supplied to and moving through a facility.
A site can continue operating while electrical disturbances quietly waste energy, generate heat and place additional stress on equipment. As businesses invest in solar, batteries and electrification, maintaining a healthy electrical environment becomes increasingly important.
The energy transition is valuable, but each site must be ready to support the new technology being installed.
Poor power quality often remains hidden until it starts affecting operations.
Rising electrical and mechanical maintenance costs
Motors or variable speed drives failing prematurely
Flickering lights or frequent lamp failures
Excessive heat in switch rooms
Energy consumption that cannot be fully explained
Unplanned operational downtime
Solar generation falling below expectations
These symptoms do not always reveal the underlying cause. A problem that appears to originate from the grid may instead be generated within the facility or by another connected part of the site.
Reliable data is essential before deciding on a solution.
A commercial solar system does not operate independently. It forms part of the site’s wider electrical system.
If voltage, harmonics or other electrical conditions move outside an inverter’s operating limits, the solar system may reduce its output or temporarily disconnect to protect itself. This is known as curtailment.
The result can be a correctly designed and fully operational solar system that still produces less energy than forecast.
At one agricultural site, existing power quality issues could have significantly curtailed a proposed solar installation. Identifying the risk before installation helped protect the customer’s expected generation and financial return.
This is why commercial solar should not be treated as an off-the-shelf product. It is a long-term energy system that must be designed around the way each site behaves.
Aaron Grant has seen projects involving harmonic filtering reduce energy consumption by approximately 6% to 20%, with an indicative average of around 15%. Actual results depend on the site, its electrical loads and the specific issue being corrected.
The financial value can extend well beyond electricity savings. Improving power quality may help a business:
Reduce energy lost as heat
Improve equipment efficiency
Lower maintenance expenditure
Extend the life of electrical assets
Reduce operational downtime
Recover lost solar generation
For manufacturers, avoiding downtime can be considerably more valuable than the direct energy saving.
For suitable sites, power quality improvements may deliver an indicative payback period of between one and two years. In some cases, the return can be achieved in less than a year because energy, maintenance and downtime savings combine to strengthen the financial outcome.
Every investment case should be based on measured site data, not an assumed saving.
The objective is not to sell a standard product. It is to identify whether a genuine, financially worthwhile opportunity exists and then design the right solution for the site.
Basic electricity data shows how much energy a business consumes. Advanced monitoring can reveal how that energy is behaving.
A monitoring-led approach can help businesses:
Establish an accurate energy baseline
Identify electrical losses
Detect emerging equipment problems
Assess the risk of solar curtailment
Separate grid-related issues from onsite issues
Prioritise improvements according to commercial value
Verify results after implementation
Inform future solar, battery and electrification decisions
The collaboration between Smart Commercial Energy and Qub adds another layer of technical visibility. By monitoring energy use, solar performance and power quality, both teams can help customers make informed decisions throughout the life of their energy systems.
This reflects the Smart Commercial Energy approach: understand the site first, design the solution around the data and remain invested in the long-term result.
Poor power quality can quietly erode the value of commercial solar through wasted energy, equipment failures, downtime and lost generation.
With the right monitoring in place, businesses can identify these risks earlier and turn technical information into commercially valuable action.
Speak with the Smart Commercial Energy team about protecting your solar performance and identifying the next financially valuable step in your energy strategy.