Seven utilities at once. That was part of the assignment when CleanChoice Energy moved its retail operations onto ESG’s software. Alongside those utility onboardings came a migration of its existing customer book and expansion into three state markets. In the company’s published account, one detail makes the whole exercise easier to understand: spreadsheet tracking had become something to replace.
Spreadsheets are wonderfully accommodating. They accept the exception, the extra column, the explanation that everybody remembers until somebody leaves. Growth tests that generosity. CleanChoice’s expansion had outpaced its operating infrastructure. ESG’s answer was an automated, API-driven platform with reconcilable data. The ambition was almost domestic: get the different parts of the business looking at the same records.
- ESG connects energy transactions, pricing, billing and customer operations.
- Its software supports over 40 million customer accounts, the company says.
- The useful lesson: fix the handoffs before adding more volume.
The electricity arrives. The paperwork follows.
ESG, short for Energy Services Group, serves businesses that sell, manage or move energy. Retail electricity and gas suppliers need customer records, utility messages, meter readings and contracts to agree. Pipeline operators and energy asset owners have their own financial, land and operational records. ESG supplies software and services across these jobs, principally in North America and the UK.
Consider the bill. Consumption must reach the right account, under the right contract, with the right charges. Market transactions happen around it. Financial settlement must reconcile what the business owes. A reading can be accurate while the commercial result is wrong because something elsewhere in the chain disagrees. That is the territory ESG occupies.
- 01Meter dataCapture & validate
- 02Market messagesExchange & match
- 03Price + billApply the contract
- 04ReconcileCheck the economics
A simplified view of connected energy operations. Each handoff needs the same underlying facts.
The Energy Smart Cloud is ESG’s umbrella for this connected approach. Titanium brings together retail workflows; in the US, that includes billing and customer engagement alongside transaction management. Its UK offering targets industrial, commercial and SME suppliers with pricing, billing, lifecycle management and market interaction. Smart metering, analytics, consulting and managed services fill out the picture.
A tariff is a promise the software must keep.
A sales team can devise a clever energy contract. Operations then has to deliver it. Titanium’s UK proposition puts pricing and billing together so a configured tariff can become an invoice without a separate trail of manual fixes. Its modular, API-first design is intended to connect with existing systems and data lakes. The point is fewer translations between departments.
There is a practical distinction for buyers here. The UK Titanium page describes a platform for industrial, commercial and SME supply. The American offering addresses a different set of utility and market relationships. A shared product name does not remove those differences. The demonstration needs to follow the buyer’s actual contracts, territories and daily work.
CleanChoice offers one practical example. ESG says the migration replaced spreadsheet tracking, established a shared data foundation and beat expectations for expansion into three state markets. Those are vendor-published results, not a guarantee for the next buyer. Still, the sequence is instructive: growth exposed the weakness; connected records became part of the response.
CleanChoice migration case, published July 2026. Reported by ESG.
The economics require a wider lens than the software invoice. ESG sells SaaS alongside implementation, consulting and managed operations. A buyer should also count billing corrections, manual exception handling, delayed launches and experienced employees’ time. Those costs can sit outside the technology budget while still determining whether the technology was a good purchase.
The customer who wanted to check every number.
In October 2026, FlowX selected ESG for its ERCOT operations. The Texas retail electric provider focuses on energy-intensive customers, including bitcoin miners and large-load data centers. Its requirements were specific: validated usage, operational support, accurate taxes and a granular view of costs. It selected Titanium Billing, transaction management and Settlement Cost Allocation after evaluating alternatives.
“Accuracy and transparency are non-negotiable for our business.”
Pei Hsuan Chiu · CEO, FlowX
ESG’s announcement describes direct help with transmission and distribution service provider issues, CCH tax integration and cost visibility by meter and customer. Together, those details explain the choice better than an abstract promise of digital transformation. A lean team needed dependable records and people who could help resolve the awkward cases.
Corona Energy supplies a different example. Its work with ESG began with a proof-of-concept in 2016. A March 2025 account describes using consulting and FlowManager data to identify settlement imbalances and industry billing discrepancies. The relationship connects operational actions to financial assurance. Better data becomes useful when someone can act on the difference it reveals.
That also explains why services belong beside software in ESG’s business model. Its consulting team describes an aim of making customers self-sufficient by addressing causes of revenue leakage and transferring knowledge. For buyers, that suggests a useful question: when the engagement ends, will the internal team understand the numbers better than it did before?
A software company with an acquisition map.
Founder Lynn Cannon’s business dates to 1998 in Accel-KKR’s investment announcement. Growth equity arrived in 2016. Utiligroup and iSIGMA followed in 2017, extending UK reach and customer-care and billing capabilities. Pandell joined in 2023 with land, GIS, accounting and field software. Whitestar added mapping data and infrastructure planning in 2024.
That history helps explain ESG’s breadth. This is a collection of connected energy capabilities built through both development and acquisition. Partnerships add more: Innowatts brings analytics, while POWWR extends sales, broker and pricing functions. Competitors such as Kraken and Hansen also connect utility customer operations and billing. ESG’s pitch rests on its particular combination of market knowledge, operational services and software.
The asset side broadens the audience considerably. Pandell serves energy businesses with records tied to land, finance and field activity; Whitestar supplies geographic information for planning infrastructure. Those tools sit further upstream than a household invoice. Their inclusion shows how ESG’s appetite has widened from retail transactions to the information surrounding physical energy assets.
Start with one bill.
ESG’s stated values include collaboration and integrity; its forum makes the collaboration tangible. Suppliers, regulators, networks and technology providers meet around the changes their systems must absorb. Its mission links technology to the energy transition. Here, that translates into ordinary operational questions: can the meter communicate, can the tariff run, can the charge be checked?
For a prospective customer, the sensible test is equally concrete. Trace a real contract through pricing, consumption, invoicing and reconciliation. Include an exception. Verify jurisdictional fit, migration quality and support responsibilities. An integrated platform still needs sound records and a team prepared to resolve discrepancies. CleanChoice’s lesson travels beyond energy: before scaling a process, make sure the people running it can agree on what happened.