Project Overview

For a two-storey villa with swimming-pool pumps, air-conditioning and evening lighting loads, Longlight configured a hybrid PV + storage system that prioritizes solar self-use while guaranteeing seamless backup when the grid is unstable.

Customer Challenge

The household faced rising electricity tariffs and frequent evening brownouts. The owner needed quiet pure-sine power for appliances, pool equipment and home office gear, without a noisy diesel generator as the first line of defense.

Longlight Solution

We paired an Longlight-INV3 6.2kW / 48V hybrid inverter with dual-MPPT PV input, a wall-mounted Longlight-200 10kWh LiFePO4 battery and 12 × 450W monocrystalline modules. Critical loads are split to a UPS-style output for lights, routers and refrigerators; non-critical loads ride the second AC output.

System Architecture

• Rooftop PV array (450W high-power panels) → dual MPPT of Longlight-INV3
• Longlight-INV3 hybrid inverter manages PV / battery / grid priority
• Longlight-200 10kWh wall ESS with smart BMS for daily cycling
• Optional Wi-Fi module for remote SOC and generation monitoring

Key Products Deployed

Longlight-INV3 Hybrid Solar Inverter 6.2kW 48VCore hybrid inverter 6.2kW 48VView product →

Longlight-200 Wall-mounted LiFePO4 ESS 10kWhWall-mounted LiFePO4 ESS 10kWhView product →

High Power Solar Panel 450W 34VHigh-power rooftop PV modulesView product →

Technical Highlights

• Pure sine wave output protects sensitive electronics
• Seamless switchover keeps critical loads online during outages
• Wall-mounted LiFePO4 design saves floor space in the utility room
• Expandable storage path for future 2nd battery pack

System Snapshot

Results & Benefits

• Daytime self-consumption covers pool pumps and HVAC base load
• Evening peak shaving from battery reduces grid import
• Outage backup for lights, networking and refrigeration without generator start
• Homeowner-ready monitoring for generation and battery SOC

Related Equipment

Longlight-INV3 Hybrid Inverter

Longlight-200 Wall ESS

High Power Solar Panels

Reference solution based on Longlight Energy product portfolio — Solar Inverter & Battery Energy Storage Power Supply.