Italy Residential Energy Storage Case Study: Modular 6.6–19.8kWh Home Battery Solution for the Italian Solar Market

Project Overview

• Location: Verona, Veneto Region, Italy
• Customer Type: Regional Solar & Energy Solutions Provider
• Application: Solar Self-Consumption + Home Backup Power
• Product: ACE RESS-PE20-L2 Low-Voltage Modular Residential ESS
• Capacity Range: 6.6kWh–19.8kWh
• Installation Environment: Indoor & Outdoor (IP65)
• Project Focus: Flexible, scalable residential battery storage solution for 4–10kW rooftop solar systems

As rooftop solar adoption continues to grow across Northern Italy, ACE Battery partnered with a regional solar energy solutions provider to deploy a standardized residential energy storage system capable of serving a wide range of household energy needs.

The objective was to simplify project deployment, improve installation flexibility, and provide homeowners with a reliable battery storage solution for solar self-consumption and backup power applications.

Customer Background & Challenges

The customer serves homeowners across Northern Italy, where rooftop solar systems typically range from 4kW to 10kW.

As demand for residential battery storage increased, the company needed a standardized energy storage system capable of supporting different household sizes while simplifying inventory management and installation processes.

Several market factors influenced the project requirements:

• Summer temperatures frequently exceeding 35°C, creating demand for reliable outdoor installations
• Widespread use of low-voltage residential inverter ecosystems
• Increasing homeowner interest in solar self-consumption and backup power
• Growing adoption of smart energy monitoring solutions
• Future residential electrification trends, including EV chargers and heat pumps

In addition, Italy's residential renewable energy incentive programs continue to support solar-plus-storage adoption, making home battery systems increasingly attractive to homeowners seeking to maximize solar utilization.

Customer Key Requirements

ACE Solution: Customized RESS-PE20-L2 Residential ESS System

To meet the project specifications, ACE Battery developed a customized residential energy storage solution based on the RESS-PE20-L2 low-voltage modular system. The solution combined a mature standard battery architecture with market-specific configuration for the Italian residential solar market.

Platform-Based Customization

ACE used the RESS-PE20-L2 as the core product platform and configured it into a scalable 6.6–19.8kWh residential battery solution.

Instead of introducing multiple independent battery models, ACE helped the customer standardize around one modular platform. This allowed the same system architecture to be used across small homes, family houses, and larger villas, while still supporting future capacity expansion.

Installation Configuration

For the Italian market, ACE configured the system for both indoor and outdoor residential installation.

The IP65-rated enclosure made the battery suitable for garages, utility rooms, covered terraces, and outdoor residential spaces. This configuration helped the customer handle different site conditions without changing the core battery platform.

Low-Voltage System Adaptation

We retained the 48V low-voltage architecture to match the customer's existing residential solar ecosystem.

This configuration reduced installation complexity for local technicians and supported easier integration with low-voltage hybrid inverter systems commonly used in residential solar projects.

Inverter Communication Setup

We configured the system communication through CAN Bus and RS485 protocols to support integration with the customer's preferred inverter platforms.

This enabled the RESS-PE20-L2 to be used in both new rooftop solar installations and retrofit battery storage projects.

Smart Monitoring and Backup Configuration

ACE configured the solution with app-based monitoring, SOC tracking, operating data visibility, alarm notifications, and remote diagnostic functions.

When paired with compatible hybrid inverters, the system also supports backup power operation for selected household loads during grid interruptions.

Residential Design Customization

For visible home installations, ACE supplied a clean white enclosure and low-noise operating design.

This helped the battery system better match residential environments such as garages, utility rooms, and covered outdoor areas, where both appearance and comfort matter to homeowners.

Safety and Reliability Configuration

ACE integrated LiFePO4 battery chemistry with an intelligent BMS protection strategy.

The system includes cell-level monitoring, temperature monitoring, overcharge protection, over-discharge protection, short-circuit protection, and multi-layer fault detection to support stable long-term operation in residential energy storage applications.

Future Expansion Support

We also reserved flexibility for the customer's future product development needs, including private-label branding, documentation customization, additional inverter adaptation, and capacity expansion for homes with EV chargers or heat pumps.

Outcome Summary

By adopting the customized RESS-PE20-L2 platform, the customer was able to standardize its residential ESS offering for 4–10kW rooftop solar projects in Northern Italy. The solution provided flexible capacity expansion, indoor and outdoor installation support, low-voltage inverter integration, smart monitoring, and backup power readiness within a single modular battery platform.

Need a Customized Residential ESS System for Your Market?

As a professional energy storage manufacturer, ACE Battery supports energy brands, solar solution providers, and residential ESS companies with market-specific battery system customization.

Whether your project requires capacity configuration, inverter communication adaptation, private-label branding, enclosure design customization, or regional certification support, ACE can help develop a residential energy storage solution tailored to your target market.

Talk to ACE Battery’s ESS Experts here.