- Before
- Answers for 148,600 accounts in arrears, $97.7M, on one dunning path. “I know half my field visits go to people who can't pay. I can't prove what changes if I stop.”
- Now
- Moves the lines on the quadrant and sees who moves and what it does to cash, cost, bad debt, complaints and disconnections before she sends a challenger.
One line moved, from the quadrant to an approved challenger
Lumina Utilities serves electricity and water. On Tuesday 13 October 2026 at 08:40, its collections manager opens the arrears book: 148,600 accounts 30 days or more behind, $97.7M. Here is what happens next, screen by screen, in the working solution.
- 0108:40
The arrears book on two axes, not one
Rosa Delgado · Collections managerRosa answers for every account in arrears. Her home screen places each one by ability to pay against willingness to pay, scored at 06:12. Live strategy C-14, live since Tue 2 Jun and approved by Helen Marsh, puts the won't-pay line at willingness 50, the can't-pay line at ability 35, the plan-offer line at 30 and the field-visit floor at $300. That gives 112,751 reminders, 16,781 payment arrangements, 7,492 arrangements with outreach, 11,019 on the disconnection path and 557 held as protected.
“Drag a line on the left, or click a value under a slider. The forecast is worked out against live before anything changes for a customer.”
- 02Overnight
Every account scored, checked and booked by morning
Ability scorer, Willingness scorer, Protection check, Treatment plannerThe overnight run read 148,600 accounts from billing, payments and arrears ageing to 05:40. The ability scorer weighed each bill against estimated income, bureau hardship flags from the file of 11 Oct and assistance enrolment. The willingness scorer read payments, promises and replies to 1.9M contacts in 18 months. The protection check held 557, and the treatment planner booked the week under C-14.
“41,180 texts · 9,620 letters · 3,480 calls · 298 field visits this week, each to a supervisor”
- 03Next
A red dot with a field visit booked for Wed 21 Oct
Marisol Ortega · Customer, 14 Fennel Row, HarboursideMarisol owes $1,284 on electricity and water, 74 days behind. Her ability score is 41: her bill is about 9% of estimated household income against a Harbourside median of 3%, the bureau has flagged hardship since 18 Aug, and her payments shrank from $148 in June to $45 in August. Her willingness is 36 because three letters since 26 Aug went unanswered. On 28 Jul she called in: “my hours were cut at the warehouse”.
Under C-14: “Final notice sent · field visit booked for Wed 21 Oct”
- 04One drag
The can't-pay line moves from 35 to 45
Rosa Delgado · Collections managerRosa clicks 45 under the can't-pay line, and draft C-15 opens against live. 3,339 accounts change treatment: 3,216 move from the disconnection path to arrangement and outreach, and 123 the protection check was already holding move there too. Marisol's dot turns green. The forecast on the right updates before anything goes live.
“If C-15 went live”: field visits 3,870 → 2,786 · disconnections 2,322 → 1,672 · estimated benefit +$2.17M a year
- 05Under the draft
Marisol gets a plan instead of a truck
Treatment plannerUnder C-15 Marisol moves to “Can't pay, not in touch”. The treatment planner proposes an arrangement of $72 a month for 18 months with a referral to the Lumina Bill Help Fund, inside the rules of at most 24 months and no more than 6% of estimated monthly income. Rosa can send the plan by text or make the referral from the same screen.
“Cannot pay now and is not answering letters: a support-team call first, then the plan by text.”
- 06The forecast
C-15 against C-14, replayed on Lumina's own outcomes
Strategy simulatorThe simulation replays 18 months of treatment outcomes for the draft. Over 90 days: cash collected $53.08M (+$0.18M), cost to collect $1.41M (−$0.27M), disconnections 1,672 (−650) and 533 complaints. Bad debt over the next 12 months falls to $6.21M (−$0.37M). The sensitivity curve shows where the can't-pay line should sit, and where the history is too thin to trust.
“The benefit keeps rising past 45, but so does the band: only 380 won't-pay customers with ability above 45 were offered a plan in 18 months. Test 45 first, then read the result.”
- 07The working
Where the $2.17M comes from
Strategy simulatorThe benefit is built in plain view: cash gained, +$0.72M, and cost to collect saved, +$1.08M, are each the 90-day change counted four times for a year; bad debt avoided, +$0.37M, is the 12-month write-off forecast. The simulator's run lists each step, from the overnight scores to the replay of 212,480 treatments since Apr 2025, and the outcome rates it used for every treatment.
Disconnection path under C-15: $113 cost per account and 38.0 complaints per 1,000, against $21 and 5.0 for arrangement + outreach
- 08Before any notice
Protected homes stay off the field list, whatever the lines say
Protection checkUnder C-14 the protection check holds 557 accounts off the disconnection path: 118 medical certificate or life support, 196 assistance application pending, 141 age 75+ or registered disability, 64 bereavement or hardship, and 38 disputed bills. Each hold shows its evidence and a re-check date. Edith Carmichael's oxygen concentrator certificate, from her GP practice on 14 Sep, is held to Mar 2027 and cannot be released.
“0 protected customers sent a field visit since 2 Jun”
- 09Send
Sent as a 10% challenger, not switched on for everyone
Rosa Delgado · Collections managerRosa stops at 45 and sends C-15 as a challenger: 10% of accounts, 14,860 chosen at random, starting Mon 19 Oct for 60 days, with a forecast of +$2.17M a year if promoted. The approver is Helen Marsh, Head of Credit & Collections.
“The protection check applies to both cells, and every field order still needs a credit supervisor's signature.”
- 10Approved
Helen approves, and the test is queued
Helen Marsh · Head of Credit & CollectionsHelen approves C-15 as a 10% challenger, and test T-035 is queued to start Mon 19 Oct on 14,860 accounts. Beside it, T-031 shows how a challenger earns promotion: text first, letter on day 7, lifted payment within 14 days from 57.1% to 61.2% at 97% confidence over 60 days. The test analyst reports; promotion needs Helen.
“Test analyst: the challenger is ahead at 97% confidence over the full 60 days. Promotion needs Helen Marsh.”