Place battery components

Drop a battery on the meterkast layer, pick a brand, set capacity in kWh, wire it to your existing inverter — all in the same edit pane.

3 min read · Level: intermediate

Quick answer

Open the Library panel (B) → Storage. Pre-loaded brand templates include Sigenergy, Sessy, Tesla Powerwall, and 1KOMMA5° Heartbeat. A generic template is also available.
Drop the battery on the meterkast/contador layer (this is part of the E-layer in NLCS). The placement snaps to a vertical wall position with clearance around it.
Set capacity in the edit pane that opens. Brand templates pre-fill the available kWh options (e.g. Sessy 5.2 kWh modules; Sigenergy stackable from 8–32 kWh; Powerwall 13.5 kWh). For generic: enter any value.
Connect to the inverter: right-click the battery → Connect to inverter. Diaz draws the DC cable + the AC sense lead, checks polarity, and verifies the inverter brand-compatibility (some inverters only pair with their own battery brand — Diaz warns if you mismatch).
Define the operating mode in the same pane: Self-consumption (default — battery discharges when solar drops below load), Peak shaving (battery handles short load-spikes), or Off-grid backup (battery powers selected circuits when grid drops).
Run the project-summary refresh: View → Refresh summary. The BOM now includes the battery, the cabling, and the (optional) backup-distribution panel. Export PDF or BOM as usual.

Inverter brand mismatch: some battery brands (e.g. Tesla Powerwall) pair only with their own inverter/gateway. If Diaz warns about incompatibility, either pick a matching inverter or switch to a brand that supports AC-coupling.
Local regulation always wins: battery placement (indoor vs garage), fire-rated separation, and ventilation depend on local code. Diaz does not enforce these — confirm with your installer-certification body or the brand installation manual before submitting permits.

Diaz Editor is one-time €99 lifetime for the first 100 founding spots. See the beta page.