The first Silence S04 vehicles in series production at ACCIONA’s new automotive factory –located in Barcelona’s Zona Franca– have already started to roll off the assembly line.

The new plant, spanning over 60,000m2, combines state-of-the-art technology with a highly experienced team of professionals, many of whom come from the traditional automotive sector.

Everything from chassis construction and the coat of paint to the assembly of all components is carried out in the Zona Franca Factory. Batteries will also be produced at this facility in the future, although in this initial phase they will come from the company’s factory in the nearby town of Sant Boi de Llobregat.

The first nanocar, the Silence S04, combines technology and a compact size to create a four-wheeled vehicle that is 100% electric and specially designed for urban driving.

The two-seater model –which combines the safety and comfort of a car with the agility of a motorcycle– paves the way to the urban mobility of the future with a comfortable, safe, sustainable vehicle that is also easy to park due to its small size.

The comfort of the S04 goes beyond parking ease, as it is specially designed to optimize the interior space. The two seats have a staggered arrangement, which provides spaciousness and greater freedom of movement to the occupants. The trunk, with a capacity of 247 liters, can store shopping bags or two passengers’ usual luggage.

The first version on the market is the L7e, equipped with two batteries, which offers 14kW of power, reaches 85km/h and has a homologated range of 149 kilometers. This will be followed later on by the L6e, the version without a driving license requirement, with one battery and 6kW of power, which reaches a maximum speed of 45km/h.

The batteries are removable and come with wheels and a handle for convenient and safe trolley-like transport. In addition to charging the batteries directly in the vehicle, this model also makes it possible to remove them and charge them easily from any socket.

Thanks to this system, the user can buy the S04 without batteries, saving almost 40% on the cost of purchasing the vehicle.


Silence is ACCIONA’s electric vehicle brand. With its own technology, it develops zero-emission motorcycles and cars with exchangeable batteries. In 2022, Silence ranked as the leading European brand in sales of electric motorcycles for the fourth consecutive period, with an 18% market share. Silence will soon launch the S04, a small, urban two-seater electric car, also with exchangeable batteries.
ACCIONA is a global company and a leader in the provision of regenerative solutions for a decarbonized economy. Its business offer includes renewable energy, water treatment and management, eco-efficient transportation and mobility systems, resilient infrastructures, etc. The company has been carbon neutral since 2016. ACCIONA recorded sales of €11.2 billion in 2022 and has a business presence in more than 40 countries.