Wattuneed - Your Expert in Photovoltaic Solutions

Solar kit installed on the roof of a house as well as inside it, offering a renewable energy solution.

Solar kits

Solar kit installed on the roof of a house as well as inside it, offering a renewable energy solution.
Our selection of products for the assembly and accessories of your installation

Mounts &
accessories

Our selection of products for the assembly and accessories of your installation
Discover our range of hybrid inverters

Hybrid
inverters

Discover our range of hybrid inverters
Solar panels: rigid all-black, rigid traditional blue, and flexible

Solar panels

Solar panels: rigid all-black, rigid traditional blue, and flexible
Become the architect of your own energy and build your solar kit step by step. Become the architect of your own energy and build your solar kit step by step.
Tigo TS4-A-O 700W - Smart anti-shading solar optimizer Tigo TS4-A-O 700W - Smart anti-shading solar optimizer
Customise your quotation in just a few minutes. Customise your quotation in just a few minutes.
Sofar Solar BTS lithium battery: Flash commissioning - Single button start; latest generation high-density LiFePO4 cells; total scalability up to 6 batteries at the price of €1,378 incl. VAT. Wattuneed New Product: Deye SE-F5 PRO-C 5.12 kWh LiFePO4 solar battery, 10-year warranty and unlimited scalability, priced at €1,157.97 incl. VAT.
Popular products

Latest posts

PV string: what measurements and values should you expect?
PV string: what measurements and values should you expect?
Posted in: Electrical wiring and equipment
08/12/2026
346 views

Polarity, Voc, Isc, operating current and insulation resistance: expected PV string values and how to measure them...

PV string: what measurements and values should you expect?
EN 50549: will your inverter be accepted by the grid?
EN 50549: will your inverter be accepted by the grid?
Posted in: Monitoring and Diagnostics, Comparisons & Buying Guides
07/30/2026
5971 views

NF EN 50549-1 applies to Enedis projects up to 36 kVA, but every European country still requires its own certificate,...

EN 50549: will your inverter be accepted by the grid?
Solar voltage drop: how to calculate and avoid it
Solar voltage drop: how to calculate and avoid it
Posted in: Electrical wiring and equipment
07/19/2026
1588 views

Calculate DC/AC voltage drop and size 48 V battery cables, busbars and Deye or WKS inverter connections without...

Solar voltage drop: how to calculate and avoid it
AC Coupling 2026: Guide to 6 Hybrid Inverter Configurations
AC Coupling 2026: Guide to 6 Hybrid Inverter Configurations
Posted in: Inverters, Sizing & Selection, Installation & Configuration
07/16/2026
53120 views

Master the 6 AC Coupling configurations to add batteries to your existing photovoltaic installation: Deye, Sofar,...

AC Coupling 2026: Guide to 6 Hybrid Inverter Configurations

Popular posts

Deye Hybrid Inverter Configuration: Complete Engineering Manual 2026
Deye Hybrid Inverter Configuration: Complete Engineering Manual 2026
Posted in: Installation & Configuration, Comparisons & Buying Guides
01/12/2026
131991 views
Comprehensive technical guide to Deye hybrid inverter configuration: energy bus architecture, critical BMS...
Deye Hybrid Inverter Configuration: Complete Engineering ...
French legislation on photovoltaic installations
French legislation on photovoltaic installations
Posted in: Solar kits, Economy & Regulation
03/26/2025
75678 views
This comprehensive guide details French legislation governing photovoltaic installations, from administrative...
French legislation on photovoltaic installations
AC Coupling 2026: Guide to 6 Hybrid Inverter Configurations
AC Coupling 2026: Guide to 6 Hybrid Inverter Configurations
Posted in: Inverters, Sizing & Selection, Installation & Configuration
07/16/2026
53120 views
Master the 6 AC Coupling configurations to add batteries to your existing photovoltaic installation: Deye, Sofar,...
AC Coupling 2026: Guide to 6 Hybrid Inverter Configurations
Complete guide: Installing and setting up the Marstek Venus battery
Complete guide: Installing and setting up the Marstek Venus battery
Posted in: Solar batteries, Technologies & chemicals
07/08/2025
52098 views
Find out how to easily install and set up your Marstek Venus battery to optimise your home solar energy storage.
Complete guide: Installing and setting up the Marstek Ven...
Representational image of the electrical diagrams available on our website

Assembly diagrams

Assembly diagrams
Our solar simulator and its production chart

Production simulator

Production simulator
Discover our various articles on photovoltaics in our blog.

Discover our blog

Discover our blog

Off-grid solar kit: solar autonomy in 2026 with L'ArchiPelle

With L'ArchiPelle and Julien, we speak unfiltered about solar autonomy in 2026: batteries, hybrid inverters, profitability, and real technical choices for your off-grid solar kit.

Julien Mawet (Wattuneed) discusses real technical choices with Brian from L'ArchiPelle

Discover L'ArchiPelle on YouTube: exclusive videos on self-sufficiency and permaculture! Discover the channel right now!