Goal: From roof planning to commissioning —
clear, practical and manufacturer-independent.

Presenter: Alexander Kaub
Founder of a major solar training academy in Southeast Asia, former PV expert assessor and environmental engineer.

Part 1: Understand, Plan & Select

  1. Start with the roof: Make roof planning easier.
  2. Understand datasheets: Connect panels correctly, plan voltage and current, and account for temperature effects.
  3. Strings & MPPTs: Design strings correctly, understand parallel connections and allocate MPPT trackers appropriately.
  4. Handle difficult roofs: Practical solutions for different orientations and shading.
  5. Reduce shading losses: Identify, assess and minimise the main causes.
  6. Select the right equipment: Choose suitable solar panels, inverters and battery storage.

Part 2: From Installation to Commissioning

  1. Roof installation: Mounting-system basics for rafter and purlin roofs and common mistakes to avoid.
  2. Direct current (DC): Practical cable routing and wiring.
  3. Protection concepts: Surge protection, combiner boxes and generator junction boxes.
  4. Safety & durability: Earthing, equipotential bonding, corrosion protection and lightning protection.
  5. Avoid mistakes: Identify and correct common planning and installation errors.
  6. Commissioning & documentation: Checklists, maintenance and yield monitoring.

Your benefit: make more informed decisions, reduce project risks and reach a technically suitable solar solution faster, with clear checklists and practical guidance.

The content is aimed at building owners and professional companies. Electrical work must always follow the rules and qualification requirements applicable at the installation location.

Configure a Single-Phase Victron SystemConfigure a Three-Phase Victron System

5 Steps to Your Victron System

  • Choose Your Inverter/Charger

    Choose according to your needs: a MultiPlus-II for single- or multi-unit systems, Quattro-II with an additional AC input, EasySolar as an integrated solution with inverter/charger, GX device and solar charger, or Multi RS Solar with an integrated solar charge controller.

  • Victron Energy SmartSolar MPPT 250/70 MC4 & Tr VE.Can | Solarladeregler

    Choose Your Solar Charger and/or Solar Inverter

    Victron MPPT solar chargers charge the battery directly from the solar array with very high efficiency. AC-coupled solar inverters can supply household loads and can also be integrated into suitable Victron backup or off-grid designs. Both approaches can be combined for flexibility and resilience.

  • Pylontech US5000 PV-Speicher

    Choose Your Battery Storage

    Victron systems are compatible with high-quality low-voltage battery storage, including widely used 48 V solutions. Battery capacity should be matched to inverter power, battery limits, load profile and the desired level of autonomy rather than selected by one fixed rule.

  • Choose Your Accessories

    Victron Energy offers coordinated accessories ranging from GX control devices and energy meters to protection components, communication interfaces and cables. Choose the components required for your specific system and get free technical advice if you are unsure.

  • Choose Your Solar Panels

    For Victron MPPT solar chargers, panel voltage and current must be matched carefully to the controller’s voltage, current and power limits. Use the current datasheets of the exact panels and MPPT selected when designing each string.

Victron Solar System – Off-Grid Example: Technology, Installation & Economics

No Question Goes Unanswered

Should I choose a MultiPlus with an integrated GX device or use a separate GX device such as Cerbo GX?

At a comparable overall price, a separate Cerbo GX generally offers more interfaces, connection options and flexibility for future expansion. An integrated GX device can still be attractive where compact installation and fewer separate components are priorities.

How do I connect the different Victron devices to each other?

Use a GX device, usually the Cerbo GX, as the central monitoring and control unit. Depending on the device, communication uses VE.Bus, VE.Can, VE.Direct or supported wireless connections. Follow the current connection diagram and manual for the exact devices used, including CAN-bus termination where required.

Should I connect my solar panels to an AC solar inverter or to an MPPT solar charge controller?

Both approaches have advantages. An AC solar inverter converts solar power directly to AC for household loads, while an MPPT solar charger charges the DC battery directly. Many Victron systems combine AC-coupled solar and DC-coupled MPPT charging to balance direct consumption, battery charging and resilience.

How can I integrate a solar inverter into a Victron system, and what should I consider?

A solar inverter can be connected on the normal grid side of the Victron system or, in a correctly designed AC-coupled setup, on a Victron-backed AC output. The second approach can allow compatible solar generation to continue during a grid outage, but it must follow Victron’s current AC-coupling, frequency-shifting, phase and sizing rules for the exact equipment.

Why do I need to enter values in VEConfigure during commissioning, and how does it work?

VEConfigure defines important inverter/charger and battery-related operating parameters. For grid-parallel installations, use the current grid code, approved firmware and settings required for the installation country and system. If ESS is used, configure the current ESS assistant and operating strategy. For Pylontech and other managed batteries, follow Victron’s current compatibility documentation for the exact model and firmware.

When do I need a Lynx Distributor or Lynx Power In?

The Lynx Distributor provides structured DC distribution with fused connection points for batteries, inverter/chargers, solar chargers and other DC equipment. The Lynx Power In is a simpler distribution point and can be useful where external protection is already provided. Very small systems can sometimes be designed without Lynx components if all required fusing, busbars and cable protection are implemented correctly.

30+ Years of Experience

Sustainable Solutions

Expert Service & Advice

Comprehensive Solar Knowledge

30+ Years of Experience

Sustainable Solutions

Expert Service & Advice

Comprehensive Solar Knowledge

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