The verdict in three sentences
With 450 generators spread across banks, telecom sites and clinics in Bamako and the regions, scheduling through WhatsApp groups leads to missed oil changes, avoidable breakdowns and lost contracts. A custom maintenance application costs between FCFA 5 and 12 million in 2026, depending on the level of remote monitoring and integration. Tracking running hours, diesel control and photo intervention reports turn maintenance into a sales argument at renewal time.
Why WhatsApp no longer works for 450 generators
In Bamako, power cuts keep some generators running 8 to 14 hours a day. A 100 kVA generator running 10 hours a day reaches the 250-hour oil change threshold in less than a month. Multiply by 450 machines of different brands and ratings, and the technical director ends up tracking nearly 5,000 preventive interventions a year in WhatsApp chats where photos get lost. The consequences are familiar: engines seized for lack of oil, undetected diesel theft, clients who never see a report and do not renew.
| Indicator (2026 order of magnitude) | WhatsApp scheduling | Maintenance application |
|---|---|---|
| Oil changes done on schedule | 60 to 70% | over 95% |
| Major breakdowns per year across the fleet | 35 to 50 | 10 to 15 |
| Unexplained diesel variance | 8 to 12% | under 3% |
| Time to deliver report to client | 3 to 10 days or never | same day, signed PDF |
| Contract renewal rate | 70 to 75% | 88 to 92% |
| Weekly scheduling time | 10 to 12 h | 2 h |
Features and their price
The core manages each generator's record (brand, rating, site, client, serial number), hour readings by the technician, automatic calculation of oil change, filter and service due dates, and a mobile intervention report with photos, client signature and offline mode. Higher tiers add diesel tracking (deliveries, gauge readings, theoretical consumption), spare parts stock and, optionally, remote monitoring through a GSM box.
| Scope | Content | 2026 budget (order of magnitude) | Timeline |
|---|---|---|---|
| Maintenance core | fleet, hours, due dates, offline photo reports, client PDF | FCFA 5 to 6.5 million | 8 to 10 weeks |
| + Diesel | deliveries, gauge readings, theoretical consumption per kVA, variance alerts | FCFA 6.5 to 8 million | 10 to 12 weeks |
| + Stock and contracts | parts, filters, oil, contracts and intervention billing | FCFA 8 to 10 million | 12 to 14 weeks |
| Full platform | client portal, GSM remote monitoring, management dashboard | FCFA 10 to 12 million | 14 to 18 weeks |
| Remote monitoring box | hours, voltage, fuel level, remote alarm | FCFA 120,000 to 250,000 per generator | per rollout |
| Hosting and maintenance | cloud, SMS, support, upgrades | FCFA 120,000 to 300,000 per month | ongoing |
Offline mode is not optional: at many sites in Kayes, Sikasso or Ségou, the technician has no signal in the generator room. The application stores everything on the phone and syncs when the connection returns.
Diesel, the first source of savings
A 100 kVA generator at 75% load burns about 20 litres of diesel per hour. At around FCFA 775 per litre in 2026, a single hour costs more than FCFA 15,000. On a fleet consuming several million litres a year on behalf of clients, an unexplained 10% variance represents hundreds of millions of FCFA. The application compares deliveries, gauge readings and theoretical consumption calculated from hours and load, then raises an alert beyond a threshold, for example 5%. For clients buying the diesel, this control becomes a service sold in the contract.
Mini case study
Mr Traoré, technical director of a maintenance company in Bamako, manages 450 generators. Last year he suffered 42 major breakdowns at about FCFA 850,000 each on average (parts, labour, contractual penalties), totalling FCFA 35.7 million. With oil changes kept on schedule, he targets 14 breakdowns, saving about FCFA 23.8 million. His renewal rate also rises from 72% to 88% on a contract portfolio of FCFA 180 million a year, nearly FCFA 29 million of revenue retained. Chosen project: core + diesel + stock for FCFA 9 million, plus FCFA 2.4 million a year for hosting. Payback: under 6 months.
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FAQ
Does the app work without a signal on site?
Yes, the technician records hours, photos and signature offline. Sync happens automatically as soon as a 3G or 4G network is available, usually in under 2 minutes.
Does every generator need a monitoring box?
No, manual hour readings are enough to start. Boxes, at FCFA 120,000 to 250,000, pay off first at critical sites such as telecom towers and clinics.
Can our clients see their reports?
Yes, the client portal gives access to PDF reports, due dates and diesel consumption. This is often what lifts renewal from 72% to nearly 90%.
Can we manage several generator brands?
Yes, each model carries its own maintenance intervals, for example 250 hours for oil changes and 500 hours for some filters, configurable by the technical team.
How long until we are operational?
The core is delivered in 8 to 10 weeks, then loading the 450-generator fleet takes 2 to 3 weeks with an Excel import.
Let's scope your project. Tell us your fleet size, service areas and how you currently manage diesel: we will price the scope, an indicative FCFA budget and the go-live timeline. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
