Unnamed and unverified accounts
Delays in move-in or move-out information can leave consumption on interim accounts that may be difficult to recover.
Energy billing
Find the failures behind customer and revenue impact.
Billing errors are rarely isolated events. They can trigger complaints, debt, operational rework and revenue leakage. The opportunity is to connect the outcome to its root cause and act earlier.
Billing performance
Find the pattern behind the outcome.
Billing problems can begin with data, process, system or communication failures. Connecting the signals reveals where customer harm, revenue leakage and operational effort are being created.
AccuracyReads, tariffs, account configuration and consumption
data
Customer impactComplaints, bill shock, disputes and avoidable debt
Commercial impactRevenue variance, reversals, rework and cost-to-serve
The problem
Billing issues compound across the customer journey.
The final bill or reversal is often only the visible symptom. Understanding the full chain is essential to fixing the process rather than repeatedly correcting the outcome.
Inaccurate reads and configuration
Meter, tariff and account-data issues can create incorrect bills, disputes and repeated manual intervention.
Unclear and inconsistent journeys
Customers may struggle to understand what information is required, who is responsible and how to resolve a disputed bill.
Reversals, rework and leakage
Historic reversals and recurring failure patterns can hide material revenue variance and increase cost-to-serve.
Home moves opportunity
Identify change of tenancy earlier and more reliably.
Energy can be used immediately when someone moves into a property, even if a named account has not been established. If engagement is delayed, consumption can accumulate on unnamed or unverified accounts, making responsibility harder to establish and the resulting debt more difficult to recover.
10–15%Estimated share of total debt and arrears linked to change of
tenancy
1m+Households for which suppliers are estimated to have no
customer details
£4.79bnTotal domestic energy debt and arrears in Q1 2026
Sources: Energy UK, change-of-tenancy debt analysis; Ofgem, Tackling Energy Debt in the Supplier Home-Moves Process.
1
Detect
Find references to house moves across calls, messages, account notes and operational data.
2
Connect
Link the customer signal to the relevant premise, account, meter and billing journey.
3
Intervene
Prompt the next appropriate action, improve guidance and resolve missing information earlier.
4
Measure
Quantify additional moves identified, debt avoided, operational effort reduced and customer outcomes improved.
From insight to control
Move from correction to prevention.
A problem-led approach can be applied across historic reversals, back-billing, tariff configuration, inaccurate meter reads and other recurring sources of billing failure.
Establish the exposure
Identify affected customers, calculate revenue variance and size the operational effort tied to the issue.
Find recurring root causes
Connect billing outcomes to processes, system events, data quality and customer journeys.
Focus remediation
Direct attention to the causes creating the greatest customer harm, commercial loss or repeated rework.
Prevent recurrence
Track trends, controls and emerging failure patterns so that issues are surfaced before they scale.
Relevant proof
From billing symptoms to root causes.
Optima has helped energy and utilities providers quantify billing exposure, trace operational drivers and build repeatable analytics and remediation capability.
Historic billing reversals
Optima built an automated analytical solution that identified, quantified and tracked historic bill reversals across operational teams, replacing manual investigation with repeatable monthly insight.
- £4m revenue variance identified and quantified
- First comprehensive view of reversal drivers
- Data-led prioritisation of operational improvements
End-to-end billing remediation
Optima reconciled CRM tariff configuration with billing systems, mapped the complete customer journey and identified affected accounts, root causes and impacted processes.
- Clearer understanding of billing discrepancies
- Prioritised corrective action and customer communication
- Stronger foundation for billing accuracy and control
Start a conversation
Where is customer value leaking in your energy business?
We can help you understand the debt, churn, billing and customer-value signals already in your data, identify the highest-value opportunities and move from analysis to action quickly.