Plan Battery Charge and Discharge Windows from Your Own Forecast

How to Use This Tool

Simulate an editable hourly battery policy without connecting to equipment. Plan solar battery charge and discharge windows from user-entered load, generation and tariffs, with state-of-charge limits and exportable actions.

The work this page finishes

A battery capacity alone does not show which forecast hours create surplus, when a reserve blocks discharge or how an editable price rule changes grid use. For Battery Window Planner, keeping source order beside the computed artifact lets a user repair only the failed entries and reproduce the same batch later.

Deterministic workflow

For each supplied hour, charge from solar surplus up to usable capacity after efficiency, then discharge against deficit only when rate meets the entered threshold and reserve remains. For Battery Window Planner, a run is capped at 5,000 items and 2 MB, preventing an accidental oversized paste while preserving successful rows when another row fails.

Why a dedicated interface helps

Compare scenarios by changing the reserve, threshold and forecast; transfer the result only to equipment settings approved for the actual battery and tariff. For Battery Window Planner, a purpose-built form exposes every assumption and returns the same ordered structure on every run, which is more practical than reconciling shifting conversational output.

Assumptions

• Each row represents one hour.
• Discharge efficiency is included in the user's usable-capacity convention.
• Rates and forecasts are user-supplied scenarios, not live data.

For Battery Window Planner, keep an untouched copy for comparison after import; the browser performs the work locally, but local software and extensions are not controlled by this page.

Limitations and review boundary

It neither fetches forecasts nor controls equipment and omits inverter limits, degradation, taxes, export compensation, demand charges and electrical safety requirements. For Battery Window Planner, the implementation neither follows user-entered links nor evaluates their contents, and it displays material as plain text rather than active HTML.

Verification and provenance

Fixtures derived from the displayed rule and NREL — Battery Storage were reviewed on 2026-08-26; they include normal, empty or invalid, and partial-failure behavior. The example stores midday surplus, preserves a 2 kWh reserve and discharges only in the final higher-rate hour.