Preliminary Solar Designer

Shape a solar system around your energy needs.

Optimize your equipment, review live PVWatts simulation and battery state-of-charge, then lay out panels on your roof satellite imagery.

Step 1 of 3

System sizing & simulation

Fine-tune your solar capacity, inverter, and battery storage with live hour-by-hour simulation before physical roof placement.

Target Solar: 0.0 kW (0 panels)Daily use: 0 kWh

1. Select System Architecture Mode

All-in-One Storage

Integrated battery & inverter in a single unit. No separate inverter required.

Built-in inverter included

Inverter + Modular Battery

Separate hybrid solar inverter paired with expandable modular battery storage.

Customizable capacity

Solar Only (No Battery)

Grid-tied solar for maximum daytime bill reduction with standard grid fallback.

Lowest upfront cost

2. Solar Panel Model & Sizing

Solar Panel Model

Number of Panels: 0 panels (0.00 kW)

Target for ~0 kWh/dayRecommended: 1 panels (0.7 kW)

Solar InverterBuilt-in to All-in-One

Integrated Inverter (5 kW)

The selected Reference All-in-One 5 kW / 10 kWh includes a built-in hybrid inverter. No separate inverter is needed.

Battery StorageAll-in-One Unit

10 kWh storage · 5 kW charge / 5 kW discharge · 90% round-trip efficiency.

PVWatts & Zero-Export Battery Simulation

Model the energy flow hour by hour.

Solar serves your property load first, then charges the selected storage unit. Surplus is curtailed; grid export is zero.

Active Storage Configuration

Reference All-in-One 5 kW / 10 kWh (10 kWh)

5 kW charge · 5 kW discharge · 90% efficiency · Built-in 5 kW inverter

Load profileDaily target (kWh)

Calculate production to see annual solar, grid import, battery dispatch, and customer economics.

Stage 1 economics

Customer economics & financing

Calculate production to model the current utility cost, residual grid cost, annual savings, cash position, and financing scenario from simulated grid imports.

Domestic · EasipayK0.7686/kWh before VAT · PNG Power Q2 2026 · customer totals include 10% VAT

Keep or discuss this preliminary design

Save, download or send this preliminary design to our PNG technical engineering team.