OpusFlow runs a billing engine every night that checks all active contracts and automatically generates invoices for any that are due. There is no manual step required and no risk of a billing run being forgotten because someone was on holiday. The system also includes built-in safeguards that prevent a customer from ever being billed twice for the same period.

Yes. The heat pump calculator sits inside the same quotation flow as the PV Designer and battery calculator, so your consultant can cover solar design, battery sizing, and heat pump assessment in a single appointment and present a combined proposal with a full renewable energy picture — including a joint ROI calculation — in one branded PDF. No switching between tools, no separate follow-up visits.

1. Complete the form with your own details
2. Enter the referral’s details via the same form (step 2);
3. OpusFlow reviews the referral and contacts the referred person
4. When the referral subscribes to an OpusFlow subscription, both you and the referred installer receive €250.
5. Terms & conditions apply, you can read the full terms here

Yes. Field technicians clock in and out against specific projects directly from the OpusFlow mobile app. Those hours appear in real time in the back-office view, feed into project cost tracking, and route through your approval workflow before they’re finalized. No paper, no WhatsApp messages, and no end-of-month reconstruction from memory.

Yes! You can design your invoices entirely in your own corporate identity. Logo, layout and colors, everything is on your terms.

Yes. OpusFlow’s Multi-Entity Finance feature lets you manage multiple companies, labels, or subsidiaries from a single account. Each entity gets its own branding, invoice number sequences, payment terms, and accounting integration. Projects and quotes are automatically linked to the correct entity, so there’s no risk of invoices going out under the wrong logo or routing to the wrong general ledger.

OpusFlow lets you create service and maintenance contracts, send them to customers for digital signature, and then automate the entire billing cycle that follows. Once a contract is active, invoices generate and payments are collected on the schedule you define — without anyone on your team needing to trigger it manually. It is designed to turn one-off installation projects into predictable, recurring revenue without adding to your team’s workload.