v5.8.0 – Calibrated SIBELGA gas conversion + editable factor

What's new

Changed

• SIBELGA (Brussels) default gas conversion factor: 11.2 → 11.39 kWh/m³. Calibrated against a full 359-day SIBELGA gas bill (1481 m³ → 16 865 kWh). The old 11.2 placeholder under-counted gas energy by ~1.65%.

Added

• 📐 Update Gas Conversion Factor — a new option in the integration's Configure menu to change the kWh/m³ factor after setup, no reinstall needed.

Upgrade notes

• New installs use 11.39 automatically.
• Existing installs keep their configured value. To adopt the calibrated default (or your own), go to Settings → Devices & Services → Belgium Energy Costs → Configure → 📐 Update Gas Conversion Factor.
• The most accurate factor is your own: divide the kWh billed on your annual statement by the m³ consumed over the same period.