Utility Bill Audit

Optimal rates and recovery for overbilling.

Companies receive hundreds, even thousands, of complex utility bills each month. Energy invoices in particular are full of varying rate and tariff structures, due dates, open/close charges, and more. Due to sheer volume and complexity, most AP departments are focused on simply getting payments sent out the door without auditing bills for errors or comparing charges to contracted rates.


With an Illumis Utility Bill Audit, you get the best of both worlds — optimized utility pricing and error-free payments, with no extra time and effort from your AP department.

Are Utility Bill Errors Draining Your Profits?

Utility bills are one of the top operating expenses for businesses. Between inflation and the pandemic, everyone is watching every dollar going out the door, and finding ways to reduce utility costs is a priority. Companies in all types of industries have turned to utility bill auditing to help build their bottom line.

Uncover Billing Errors and Rate Adjustments

One of the best ways to ensure your energy costs stay in check is to make sure your utility accounts are placed on the optimal utility rate and tariff schedule. Our clients boast that they have achieved substantial savings after our review.


Our experienced team of experts will analyze your historical utility spend, compare it to all available rate plans offered by your providers, and work directly with them to ensure you receive the most advantageous rate. In addition, our utility audit will work to identify tax exemptions that are not being utilized and make sure the exemptions are put in place.


Our expertise in state regulations and billing practices of tariffed providers will help to reduce your operating expenses and recover lost credits and refunds.

Areas of Utility Bill Errors

Rate Structure

Nearly 20% of companies do not have optimal rate structures. This review analyzes your historical utility spend and your provider’s available rate plans to identify the most advantageous rate structure for your organization.

Energy Usage

In some cases, units billed do not match actual meter readings. Our analysts dive into the details behind your utility bills to locate any instances of this error.

Billing Errors

We track down all inaccuracies that stem from incorrect rate hikes, fees, and human error to make sure you are only billed for what you owe.

Company Growth/Changes

Building renovations or closing locations can result in services and meters that are no longer in use but are still being billed. We review all utility bills for this error.

Illumis Global has shown us how to cut energy costs and put over $1.2 million in savings to other budget items.

Tony Brush

President / CEO

Working for Illumis for 21 years, Brush has been instrumental in the growth of the company. Brush served as Vice President at Illumis before stepping into the role of President / CEO and has been involved in all aspects of the company’s business throughout his career.


Brush’s approach to his role centers on the motto of Illumis, Bright Ideas for Better Profits. Known for his loyalty, team building, and tough but fair expectations, he empowers employees to deliver, therefore fostering a company culture that ensures customers can count on people.