Battery sizing, promotions and partial measurements

The app now uses neutral battery scenarios rather than a specific product. The short analysis identifies its first scenario explicitly (5 kWh total, 4.5 kWh usable, 2.5 kW in/out), while the separate size/power study selects among tested alternatives. No new-device model or count is requested. Only genuine owned inventory is labelled existing. Search bounds and recommendations use total kWh consistently; simulation uses 90% usable storage for generic cases. Owned inventory has nominal size and an adjustable usable share, separate from round-trip efficiency. Legacy stored usable capacities and power limits are preserved during conversion. Valid home size input persists immediately and shows recalculated usable kWh.

The current electricity-contract editor exposes fixed and per-kWh promotions together. Gas retains both fields. Blank current discounts mean zero without confirmation. Fixed promotions are not stacked twice; period simulations retain the existing contract-year proration and conditions warning. No personal promotion is installed as a global default.

A partial import selects the entire available measured period instead of its last month. Actual quarters and costs remain period amounts. A secondary annual indication assumes identical daily averages, without season correction. Battery sizing allows at least 90 contiguous days; its year view scales financial/energy results once, never battery size, power, peaks or end state. Missing seasons are not invented. PV investment and heat-pump advice retain their separate data prerequisites.

Validation includes the full test suite, legacy migration, current-contract input handler, total-to-usable conversion, gas/electric stacked promotions, partial-period selection, chronological conservation, missing-quarter rejection, annual-view immutability and worker/package checks. The supplied partial CSV was tested locally through the actual importer and eight neutral storage variants. It was not included in source or deployment. Tariff-independent physical tests and synthetic prices are not personal tariff recommendations. Browser QA confirmed a total size change from 5 to 10 kWh immediately updates usable storage from 4.5 to 9 kWh. The screenshot uses fictitious test inputs.