Nestack Agent Care
Industries / Energy & Utilities / Billing-support agent

Energy AI agent · Billing & tariff

Billing & Tariff Support AI Agent

Retrieve the bill and the filed tariff sheet that priced it, explain the charge against that sheet, surface the escalation route, and leave the arrangement itself to a billing adviser.

4–6 weeksTypical delivery
Your stackDeployment
Tariff-citedAdviser review
Agent CareAfter launch

What this agent does

Explains the bill, without repricing it

In
01

Ingesting the account, the disputed bill and the tariff schedule in effect from supported billing, CIS or meter-data sources.

02

Normalising rate codes, meter reads and charge lines, and carrying each one forward with its source.

Reason
03

Explaining each charge against the filed sheet that priced it, line by line.

04

Applying the jurisdiction, rate class and tariff version configured for that account.

05

Citing the tariff sheet and its effective date rather than paraphrasing a rate.

Decide
06

Flagging a meter doubt, a high-bill enquiry or a hardship signal as a dispute, not an enquiry.

07

Routing arrangements, adjustments and disconnection questions to a billing adviser.

Out
08

Retaining the enquiry, the sheet cited, the adviser's answer and the escalation offered against the account.

09

Executing write actions only inside the approval boundaries agreed during implementation.

Product statement

The agent explains and cites; a billing adviser decides what is charged, adjusted or arranged, and the utility answers to the regulator for the tariff.

Example workflow

One enquiry, bill to answer

AgentHuman
1Bill enquiry receivedPhone, web chat, email or a callback from the billing queue
2Bill and tariff retrievedThe billed period, the meter reads, the rate class and the sheet in effect for it
3Explanation draftedCharge lines, the sheet cited and confidence
4Controls appliedTariff-citation checks, jurisdiction rules, dispute-signal flags and confidence threshold
No human action required

Stages 1 to 4 run unaided, and nothing is charged, adjusted or arranged at any of them — the adviser's lane opens at the confidence gate.

5DecisionDivides at the confidence threshold
High confidence

Goes to the billing adviser to release.

Low confidence

Adds a tariff-desk read first.

Adviser review

The answer is held with the sheet it cites, its dispute flags and the confidence.

Approve · Correct · Send to tariff desk
Approved — released to the customer
6Billing record updatedOnly where write access and approval policy allow it
7Outcome evaluatedCitation accuracy, adviser corrections, dispute classification and repeat contacts
Corrections

Each adviser correction is counted in the evaluation.

What should not run autonomously

Human approval stays in control

Outside the boundary — human approval required8 items
Quoting a rate that is not on the filed sheet.
Agreeing a payment arrangement outside the tariff.
Disconnecting service, or restoring it afterwards.
Deciding a medical-necessity or hardship claim.
Automation boundaryAgent acts unaided
Retrieve the bill and the filed tariff sheet that priced it.
Explain each charge against that sheet and its effective date.
Record a doubt about the meter or the bill as a dispute.
Surface the escalation route and hold the answer for an adviser.
Any write happens inside the boundaries agreed at implementation, never ahead of the adviser.
Adjusting a bill, waiving a charge or issuing a credit.
Issuing an estimated bill, or the true-up after it.
Determining eligibility for an assistance programme.
Changes to tariff mapping or escalation thresholds.

Example output

One bill enquiry, annotated

Everything the agent says is attached to the sheet it was read from.

Billing answer · single enquiryIllustrative example
Account
Charge explained
Billed amount
Tariff sheet cited
Confidence
Escalation
Residential electric
Summer usage crossing two tier thresholds
$318.42
Filed Schedule E-1
91%
PUC complaint route stated
As receivedTaken from the billing record and the tariff sheet in effect — nothing on this side is written by the agent.
Tariff basis used Filed rate schedule Meter reads of record Tier thresholds on the sheet
Why this answerIt cites the sheet that priced the bill rather than restating a rate.
ActionApproveCorrectSend to tariff desk
What the score decidesBelow the configured threshold the answer picks up a tariff-desk read before it.

Value

Where AI adds value

The same four claims, placed at the point in the workflow where each one applies.

Where the value landsValue 01 – 04
Every bill enquiryFrom the billing record
03Explanation

Read the sheet that priced it

Draw on the filed tariff, the meter reads and the back-billing and notice rules configured for that jurisdiction.

01Approved path

Read the tariff, not around it

Routine charge explanations arrive already cited to a sheet.

02Human review

Put advisers where the dispute is

Dispute signals and low-confidence answers are marked, so the adviser's read starts where the exposure sits.

04Build an evidence trail

The answer, the tariff sheet behind it and the adviser who released it stay on the account.

Integrations

Typical integrations

Five system groups connect to the same agent. Which of them are in scope is decided in discovery.

Billing and CISOracle CC&B · SAP IS-U
Hansen · Gentrack
Metering and usageMDMS · AMI head-end
Green Button exports
Tariff and ratesFiled tariff library
Rate engine · rate schedules

Agent

Billing & tariff support

Reads the bill
Cites the sheet
Holds for an adviser

Contact and workflowSalesforce · Genesys
Case and complaint systems
Observability & evaluationOpenTelemetry · Langfuse
Supported monitoring/evaluation sources

Integration availability depends on the client's existing systems and API access.

Agent controls

Six layers between the model and the customer

Every layer wraps the next. What none of them catches is in the map below.

L6 · Outermost — last line of defenceInward → L1 · closest to the model
L6Rollback / safe modePull the agent back to bill retrieval when evaluation or production signals degrade.Roll back
L5Version monitoringTrack model, prompt, tariff-version and jurisdiction-configuration changes.Track
L4TraceabilityRecord the enquiry, the sheet cited, the answer, the correction and the release.Record
L3Adviser releaseHold answers for a named adviser; it governs release, not whether a released answer was right.Gate
L2Tariff guardrailsTest answers against the filed sheet and the jurisdiction rules; a failure returns the answer.Restrict
L1Confidence thresholdsRoute low-confidence answers to a tariff-desk read before the adviser sees them.Require review
Model coreAnswer produced — charge lines, the sheet cited, dispute flags and confidence
L1 – L2Test whether an answer may stand
L3Puts the release in an adviser's hands
L4 – L5Keep the answer and the tariff sheet behind it
L6Falls back to bill retrieval when signals degrade

How Nestack evaluates it

Evaluate the whole enquiry — not only the sentence the customer hears.

Coverage runs the whole depth of the workflow, and every layer is cut by slice.

Surface — the answer the customer hears
Depth of coverage ▼
E1Final-output evaluationDid every rate in the answer appear on the sheet cited?
E2Step-level evaluationDid the agent use the right account, tariff version and jurisdiction rules?
E3Tool evaluationDid it read the correct bill and the correct tariff schedule?
E4Confidence calibrationDo low-confidence answers actually attract more adviser corrections?
E5Slice evaluationHow does performance change across specific rate classes?
E6Business outcomeHow many answers needed a correction after the customer had relied on one?
Floor — the outcome the utility answers for

Failure modes

Where each failure originates in the agent

Seven ways an answer goes wrong, by the stage it starts.

Agent lifecycleDirection of processing →
01 · Retrieval1 mode
JK-03

Superseded tariff sheet

A rate read from a schedule no longer in effect.

Stage gathersBill, meter reads, rate class and the tariff of record
02 · Reasoning2 modes
JK-04

Rate stated from memory

A rate is paraphrased instead of read off the filed sheet.

JK-06

Escalation discouraged

The customer is steered away from a meter test or a complaint.

Stage proposesThe charge explanation, the sheet cited and confidence
03 · Tool / write2 modes
JK-02

Arrangement implied

An answer commits the utility to terms outside the tariff.

JK-05

Dispute logged as an enquiry

A meter doubt is closed as resolved rather than raised.

Stage writesOnly where write access and approval policy allow it
04 · Output1 mode
JK-01

Rate not on the filed sheet

A quoted figure does not appear in the filed schedule.

Stage returnsThe answer the adviser releases and
05 · Change / Version1 mode
JK-07

Silent tariff regression

A model or mapping change widens what the agent will assert.

Stage tracksModel, prompt, tariff mapping and jurisdiction config
Sev-1 · acts outside the boundary Sev-2 · a wrong rate reaches the customer Sev-3 · source degrades, enquiry routes to review

Affected slices

Overall accuracy can hide one bad cohort

Break the correction rate down by rate class before you trust it. A small number of billing cohorts absorb most of the rework, so Nestack reports the adviser-correction rate by slice, not only in total.

Slice performance — reported separately, not only in aggregateIllustrative example
SliceFailure rateLift Lift vs. thresholdStatus
Back-billed and make-up bills5.3%3.4× Review
Estimated-read accounts4.5%2.9× Review
Time-of-use and demand rates2.8%1.8× Watch
Standard single-rate bills1.1%0.7× Normal
Bar: adviser-correction-rate lift vs. single-rate baseline · scale 0–4.0× · tick marks the 2.0× review threshold 2 of 4 slices over threshold

Evidence-linked improvement

A cycle ends in a test, not an apology

The loop shuts when the miss is a case in the suite, not when it has been explained. That suite is what the next bill enquiry answered is measured against.

Improvement cycle · five stagesSwitchback — the path turns at Improve and returns at Learn
01Detect

Adviser-correction rate rises in a rate class.

02Diagnose

Pull the enquiries and the sheets cited behind them until the cause narrows to one.

03Improve

Whatever changes ships against a version, with the enquiries that prompted it attached.

04Verify

Nothing ships until the affected cases pass a second time.

05Learn

The suite grows by one case; so does the tariff mapping.

Learn → DetectThe return edge. The next detection is measured against a longer suite than this one.

Typical build scope

Twelve workstreams across six weeks

The build scope read against the delivery timeline. Week structure follows the six-week plan — discovery, sources, enquiry workflow, evaluation, integration, then production validation and handover.

Workstream Week 1Week 2Week 3Week 4Week 5Week 6
01Billing workflow discovery and automation-boundary definition.
02Billing, CIS and meter source assessment.
03Tariff mapping, rate classes and jurisdiction rules.
04Bill and tariff-sheet retrieval.
05Explanation logic and citation binding.
06Confidence scoring and dispute routing.
07Adviser review workflow.
08Billing-system and CIS integration.
09Rate-citation regression cases.
10Guardrails and escalation controls.
11Enquiry-trail instrumentation.
12Deployment, documentation and Agent Care handover.
12 workstreams · 6 weeks · bar shows the weeks a workstream is active — several run in parallel Final scope and sequence confirmed in discovery

Engagement tiers

What each tier includes

Rows are the capabilities named in each tier's scope. Higher tiers include everything below them.

Capability✓ in scope · — not at this tier PilotOne rate class, one jurisdiction ProductionProduction billing systems AdvancedMultiple jurisdictions / tariffs
Introduced at Pilot
Explanation cited to the filed sheet
Adviser release
Citation-accuracy baseline
Introduced at Production
Reporting by rate class
Adviser review in your systems
Approved write-back
Billing-system integration
Introduced at Advanced
Multi-state billing rules
Multi-stage billing approvals
High enquiry volume
Multi-jurisdiction tariff controls
Build price From $5,000 From $8,000 Custom quote
Final build priceConfirmed after discovery based on integrations, workflow complexity, transaction volume, approval controls and deployment requirements.
Separate from buildBuild pricing is separate from recurring Agent Care, which covers managed monitoring, evaluations, incidents and verified improvements after launch.

What we need from you

What you bring, and what we build with it

Each input maps to a piece of build scope and a week in the delivery timeline.

You bringWe build with it
01Your bill formats and the accounts behind them Bill and tariff-sheet retrieval and field mappingWeek 1
02Representative bill enquiries and the answers given Explanation baseline and tariff-sheet citation bindingWeek 2
03Your filed tariff sheets and their effective dates Tariff mapping, rate classes and jurisdiction rulesWeek 1
04Access to relevant APIs, feeds or exports Billing, CIS and metering assessment, then integration setupWeek 2
05Answers you would not want relied on Citation cases and failure-mode testingWeek 4
06Where an answer must stop and wait for an adviser Confidence scoring, dispute routing, guardrails and escalation controlsWeek 3
07Named billing advisers to release answers Adviser review workflow, then pilot and production validationWeeks 5–6
Nothing else is required Deployment, documentation and Agent Care handover are ours.

Delivery timeline

Four phases across six weeks

The bands follow real work rather than a plan, so evaluation and pilot genuinely share the fifth week.

Phase W1W2W3W4W5W6
Discovery W1
Build W2 – W3
Evaluate W4 – W5
Pilot & Launch W5 – W6
Week focus W1Billing workflow discovery, tariff mapping and the automation boundary W2Billing and metering integration, and the explanation baseline W3Enquiry workflow, confidence logic and escalation controls W4Evaluation suite, citation checks and failure-mode testing W5Billing-system integration, pilot enquiries and targeted corrections W6One billing cycle answered under supervision, then Agent Care handover
Reading the bandA band covers the weeks its work is named in, and nothing else. The week 5 overlap is real, not padding.
At the end of W6Once the cycle validates, Agent Care owns the running agent.
DurationSix-week plan shown · typical delivery 4–6 weeks depending on scope confirmed in discovery.

Next step · Energy AI agent

Build a billing agent around your filed tariff, not around your call scripts.

Show us your bill enquiries, the tariff sheets behind them and who releases an answer. If you bring those, we'll map the workflow, set the automation boundary and name what stays with the adviser.

Nestack Agents · Billing & tariff supportAGT-EN-03 · Agent Care available after launch