Bill Validation / Bureau Services

Industry statistics suggest that utility invoices contain errors of between 3% and 5% by value. With ever more complex contracts being used, this figure looks set to continue.

Validating invoices can be a time-consuming and frustrating exercise. Optima can help by using the optima™ Utility Billing System (UBS), which is a proven, highly effective, fully auditable energy accounting system used specifically for the purpose of validating and managing the payment of invoices, received in either electronic or paper form.

UBS performs over 60 separate checks to identify any errors on supplier invoices. That means that we can quickly identify any overcharges that may have incurred. All elements of the invoices are validated, including the supplier’s contract rates, invoiced consumption, meter configuration, third party pass through charges etc.

“Optima secured for us considerable financial savings, over £38,500 to date, but as importantly the customer support has been first class”.


  • Ensures invoice information is consistent with your tariff
  • Even the most complex invoices validated
  • Historical invoice validation – up to last 6 years

Want to see more? Get in touch to arrange a consultation


About us
Established in 1988 originally as a partnership and incorporated in 1991, Optima develop and support advanced software for managing and analysing energy data for some of the largest energy users and consultants in the UK.

  • BSI 27001 certified
  • BSI 22301 certified
  • BSI 9001 certified