How much does transparency matter when proposing a new power or gas offer? With BILLY, supply companies rebuild the customer's full bill and simulate their own offers using the ARERA calculation logic, including from their website.

BILLY rebuilds a customer's complete bill and compares it with the supply company's offers, using the same calculation logic as ARERA. In a few seconds you go from the current bill to a clear, verifiable power or gas proposal.
Why transparency makes the difference in energy sales
In the energy market, a clear and reliable simulation can make all the difference in the customer relationship. Comparing different offers means considering every item on the bill, not just the energy price: without a dedicated tool, the risk is presenting savings that never show up on the invoice.
What BILLY simulates
- Complete simulations: commodity, transport, system charges and VAT.
- Power and gas: a single tool for both supplies, configurable by region.
- Web integration: also available as a widget on the company website.
- Traceability: history of simulations by sales channel.
How it works, in three steps
- The customer's or prospect's bill data is entered.
- BILLY rebuilds the bill using ARERA's calculation logic.
- The supply company's offers are applied and the comparison is available immediately.
More transparency in offers, more tools for the sales network. BILLY is part of QUE MAS Suite and works with the price lists and offers managed in QUE MAS.
Frequently asked questions
What is BILLY?
BILLY is the QUE MAS Suite bill simulator: in a few seconds it rebuilds the power or gas bill of a customer or prospect and applies the supply company's offers to compare them.
What calculation logic is the simulation based on?
Based on the ARERA calculation logic: the simulation includes the energy commodity, transport, system charges and VAT.
Can BILLY be integrated into the company website?
Yes, BILLY is also available as a widget to embed in the supply company's website, with simulation history tracked by channel.
Talk to us
Want to see QUE MAS at work on your data?
A demo with the people who develop the product, on a case similar to yours. No commitment.




