
Control your energy?
Our All-in-One Kit with installation in France, for carefree energy autonomy!

Discover our turnkey solution to produce your own electricity using solar power. Our basic kit includes 20 solar panels featuring the latest technologies, a single-phase Sofar Solar ESI inverter of 6 kVa, two Sofar Solar BTS 5K battery, a mounting system suitable for tile roofs, and all the components necessary for installation. We select the most efficient products to optimize the energy production of your installation.
Why choose solar energy?
By opting for a solar installation, you are choosing to:
- Reduce your electricity bill
- Decrease your carbon footprint
- Increase the value of your property
- Become more energy independent
A personalized quote for your project
We offer a customized study to determine the ideal configuration for your installation. By sending us a few photos of your roof and providing your electricity consumption along with the type of connection (single-phase or three-phase), we can provide you with an accurate quote.
A fast and professional installation
Once your project is approved, our qualified installers will handle the setup of your solar system as quickly as possible. We guarantee a meticulous installation in compliance with current standards.
The benefits of choosing Wattuneed
- Expertise: Benefit from our expertise to achieve a successful project.
- Quality: High-performance materials and professional installation.
- Simplicity: A turnkey solution to make your life easier.
- Warranty: We provide ongoing support for your installation and the installer offers a ten-year warranty.
An offer tailored to your needs
Our offer is valid for installations accessible without the use of major lifting equipment on ground level or R+1 (first floor). For projects requiring more complex access conditions, we will work together to find the best technical and economic solution. It may be necessary to make adjustments to the budget and materials based on the previously mentioned criteria. Access to the property must be straightforward without complexity and on an unprotected site. Travel expenses are covered for the first 50 km. Beyond that, mileage costs of €1 will be applied.
Want to know more?
Feel free to contact us for a free and personalized quote: info@wattuneed.com
Take the step towards energy independence!
Solar panels

Discover the solar jewel in our kit! Selected from the latest technologies, this panel offers unrivalled efficiency.
See its product sheet in our panels section to find out more.
And don't forget, we offer you the flexibility to choose the panel model you prefer.
We invite you to consult our solar production simulator to determine exactly what your solar production will be.
Different cell types
| 
Perc (Passivated Emitter and Rear Cell) | 
N-Type | 
HJT |

Efficiency | Approximately 19-22% | Approximately 20-23%. | Environ 21-24% |

Cost | Moderate | High | Very high |

Temperature coefficient | Approximately -0.3 à 0.4% per °C | Approximately -0.3% per °C | Approximately -0.2% Per °C |

Annual degradation | Approximately 0.5 - 07% | Approximately 0.4 - 0.5% | Less than 0.5% |

Durability | Good | Very good | Excellent |



Sofar Solar ESI 6 kVa - ESI 6K-S1
Discover the quintessence of solar energy conversion with the Sofar ESI photovoltaic inverter. Designed by solar industry leader Sofar Solar, this inverter embodies the pinnacle of modern solar technology.
Unrivalled reliability: The Sofar ESI inverter offers unrivalled reliability and durability, thanks to its high-quality components, guaranteeing flawless operation even under the most demanding conditions.
Optimum efficiency: benefit from optimum conversion of solar energy into electricity, thanks to the exceptional efficiency of the Sofar ESI inverter. Every ray of sunlight is captured and transformed into usable electrical power to meet your energy needs.
Superior versatility: The Sofar ESI inverter stands out for its remarkable versatility, suitable for a variety of applications and system configurations, whether for residential or commercial installation.
Advanced features: Equipped with state-of-the-art features such as two MPPT inputs, the Sofar ESI inverter maximizes the yield of your solar system, fully exploiting the potential of your photovoltaic installation.
Quality guarantee: With Sofar Solar, quality is assured. Enjoy total peace of mind with an extended warranty on your Sofar ESI inverter, guaranteeing years of reliable, worry-free performance.
Opt for solar excellence with the Sofar ESI photovoltaic inverter, and transform your solar energy into a clean, renewable source of electricity for your home or business.



Sofar Solar BTS 5 K Lithium Battery
Discover the power of the future with SOFARSOLAR's intelligent 5 kWh residential energy storage system. Designed to provide an advanced energy storage solution, our brand-new system combines 4 LiFePO4 battery modules with a distribution unit, offering remarkable capacity in a compact format.
Thanks to its modular, stackable design, extending your battery capacity is now quick and easy. Installation is child's play, thanks to quick-connect cables, so you can quickly enjoy the benefits of your new storage system.
And that's not all! With the option of connecting up to two systems in parallel, you can achieve an impressive energy storage capacity of 40 kWh, ensuring reliable energy autonomy for your home.
Invest in the future of home energy with the SOFARSOLAR energy storage system. Free yourself from energy constraints and start enjoying a more sustainable and intelligent life today!


Investment Bonuses for Self-Consumption
The State encourages the installation of solar panels by offering a bonus adjusted according to the capacity of the installation. However, it is subject to strict criteria, reserving its allocation to eligible households.
Who can benefit from the self-consumption bonus, and what are the eligibility requirements?
The self-consumption bonus is conditioned by photovoltaic self-consumption and the sale of surplus, which is mandatory for designated buyers, with rates revised quarterly. Opt for solar panels on your roof with overlay installation, requiring the intervention of a certified professional and a power limited to 100 kWc. Ground-mounted panels are not eligible.
What is the amount of the bonus awarded for self-consumption?
The photovoltaic self-consumption bonus depends on the size of your installation and varies each quarter. It is determined by four categories based on the peak power of the installations:
- Less than 3 kWc
- Between 3 and 9 kWc
- Between 9 and 36 kWc
- And Between 36 et 100 kWc (the limit not to exceed to remain eligible for the self-consumption bonus).
In summary: a more powerful installation translates into a lower bonus, hence the importance of optimizing your self-consumption.
Below are the bonus rates for installations (from 1 November 2024 to 31 January 2025):
- 220 € per kWc for installations under 3 kWc ;
- 160 € per kWc for installations between 3 and 9 kWc ;
- 190 € per kWc for installations between 9 and 36 kWc ;
- 100 € per kWc for installations between 36 and 100 kWc ;
To estimate your bonus, multiply the rates by your installation's capacity. For example, a 7 kWc installation would be eligible for €1,540 (€220 x 7 kWc).
The Energy Regulation Commission adjusts the self-consumption bonus quarterly based on the number of new requests for connection to the distribution network, such as Enedis. The current rates are accessible here
What steps must be taken to access this bonus?
The self-consumption bonus request is automatically activated after your photovoltaic installation is connected. Once validated, the amount remains fixed despite quarterly rate variations.
When is the bonus paid?
The bonus is paid by a designated buyer one year after commissioning, along with the income from surplus sales, except for installations over 9 kWc, which receive 80% immediately and the rest over four years.

Remuneration for Surplus Sale
Owners of self-consumption solar installations with surplus sales provide green electricity to neighboring households by selling the excess to designated buyers like EDF OA. Enedis covers the connection costs, thereby encouraging the energy transition to renewable energy.
What amount is granted for the purchase of excess electricity?
The purchase amount for surplus electricity depends on the installed capacity and fluctuates quarterly, defined according to four categories based on the peak power of the installations.
Below are the rates (from 1 November 2024 to 31 January 2025) as follows:
- 0,1269 € per kWc for installations of less than 3 kWc ;
- 0,1269 € per kWc for installations between 3 and 9 kWc ;
- 0,0761 € per kWc for installations between 9 and 36 kWc ;
- 0,0761 € per kWc for installations between 36 and 100 kWc ;
Once the contract is established, this rate remains constant for a period of 20 years, covering the entire duration of the agreement.
Who can benefit from the surplus sale remuneration?
To benefit from self-consumption with surplus sales, the solar panels must be installed on a roof and connected to the electrical grid to inject the surplus. Isolated sites are not eligible. The excess electricity produced is sold to a designated buyer in the absence of storage
What administrative steps need to be taken?
The application for the self-consumption bonus is activated automatically after your photovoltaic installation is connected. Once validated, the amount remains fixed despite the quarterly tariff variations.
Make an initial work declaration to the town hall.
Seek the services of an expert for the installation of solar panels.
Submit a connection request to the relevant authorities.
Establish a contract with a mandatory buyer.
When and how to invoice the surplus sale?
For invoicing the surplus electricity, the process is quick and simple: once a year, on the anniversary date of the contract's start, take a meter reading.
