SATO — Infrastructure, Fire Protection and Networks

Solar Energy · Hybrid retrofit

Hybrid Solar Retrofit with Backup

Owners of an existing photovoltaic system can assess the addition of storage and backup for priority loads. Feasibility depends on the installed inverter, module configuration, electrical service and autonomy goals.

Service scope

Keep the existing system where compatible

A retrofit does not mean every system can accept batteries. The review must confirm electrical architecture, manufacturer support, protection requirements and the proper way to integrate backup.

Existing-system survey

Identify installed capacity, modules, inverter, electrical diagram and available documentation.

Compatibility review

Assess equipment, voltage, operating modes, protections and warranty conditions.

Priority-load definition

Select circuits that should be powered during a grid failure.

Battery sizing

Estimate capacity and runtime from power demand and usage time.

Integration design

Specify inverter, circuits, protections and any required upgrades.

Commissioning and guidance

Test operating modes and explain limits, monitoring and maintenance.

Technical compatibility

Protect the investment without assuming everything can integrate

The decision depends on the existing installation. Some equipment, warranties or configurations may limit options, and this should be clarified before selecting a solution.

Evidence-based decision

The assessment identifies what can remain and what may need replacement.

Backup for what matters

Loads and runtime are defined before batteries are specified.

Lower incompatibility risk

The design documents assumptions, protections and integration conditions.

Assessment stages

Understand the current system before proposing changes

Inverter model and module data are key inputs for evaluating alternatives.

01

Information gathering

We request existing system details, photos, installed capacity and equipment models.

02

Compatibility analysis

We review architecture, electrical limits, warranties and integration options.

03

Backup design

We define priority loads, autonomy and the required equipment.

04

Execution and testing

If feasible, the installation is validated and operating guidance is provided.

Already have solar panels?

Find out whether your system can support batteries and backup.

Share inverter details, installed capacity and the devices you want to keep running during a power outage.

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