In a context of decline in public support mechanisms, mylight150 is reconfiguring its offer around an energy management box intended to transform solar surplus… into euros!
Publi-Information 
There profitability of residential photovoltaic installations has entered a new phase because, with the reduction in the surplus buy-back tariff and changes to the tax frameworkhistorical economic models are running out of steam. It is in this context that mylight150, both an energy supplier and designer of control solutions, launched the Robin box, designed to optimize self-consumption and promote the electricity produced in a different way.
mylight150 is a French company dedicated to optimizing solar self-consumption. Both an electricity supplier and a designer of control solutions, it is developing an integrated offer combining energy management boxes, virtual storage and intelligent control. The company supports around 30,000 customers, with an application allowing production, consumption and associated gains to be monitored in real time. It relies on a network of partner installers in order to deploy its solutions throughout the country.
A change of framework that rebuilds the economic equation of solar
For several years, theobligation to repurchase photovoltaic surplus by EDF has constituted a pillar of the profitability of domestic installations. This framework has gradually evolved: the tfeed-in price is now around €0.04/kWha level which no longer allows production surpluses to be significantly valorized, particularly in the summer period.
At the same time, regulations have introduced new levers. A decree published in 2024 notably established a VAT rate reduced to 5.5% for installations integrating both low-carbon panels and an energy management systemcompared to 20% previously. A differential which can represent more than 1,000 euros for the individuals concerned.
In this context, theequipment in control solutions gradually appears as a structuring element of residential solar installationsand it is in this area that mylight150 has repositioned its offer, by simplifying its range around energy management boxes. The objective: no longer consider the surplus as a loss or a simple addition, but as a resource to be exploited over time.
THE Robin box is part of this logic, by combining usage management, virtual storage and financial recovery mechanisms.
Robin: management, storage and monetization of surplus
Automated management of energy-intensive uses
THE Robin box acts directly on the main consumption areas of housing – water heater, heat pump and electric vehicle charging station – in order tooptimize their operation according to solar production as network conditions.
Its operation is based on several complementary levers:
– activation of equipment at times when photovoltaic production is maximum, in order to maximize self-consumption ;
– Shifting uses outside peak hours, relying on electricity market price signalsto which mylight150 has access as a provider;
– The redistribution to the customer of part of the gains generated via network balancing mechanisms.
The whole thing is controlled automatically via a dedicated application, without necessary user intervention. The winnings generated are visible in real time and can be transferred directly to the bank account.
With the Robin box, on average, savings linked to self-consumption and virtual storage can reach 1,000 euros per year. Added to this are cash rewards of up to 500 euros per year when several pieces of equipment are controlled. An initial usage report showed, in 2025, an accumulation of 565 euros over a single year for an equipped customer. © mylight150
Virtual storage to smooth production over time
Beyond piloting, Robin introduces virtual storage of solar surplus without ceiling : each kilowatt hour not consumed is thus converted into energy credit, which can be used later to reduce the bill.
This mechanism allows shift the use of energy produced in summer towards periods of high consumptionespecially in winter. It works with physical batteries, which continue to manage short-term surpluses, while the virtual battery takes care of unabsorbed volumes over a longer period of time. Thus, the virtual battery is not in opposition to the physical battery: the two are complementary. The physical battery manages daily surpluses, the virtual battery captures what it cannot absorb and uses it over several months.
Here is the example of a real case in Avignon – household of two people: for an annual consumption of 7,600 kWh, a photovoltaic installation of 4.5 kWp made up of 10 panels (€8,490) supplemented by a single-phase box at €2,000 and a tailor-made subscription of 100 kWh at €16.99/month, including free intelligent control, would achieve approximately 1 €165 in savings per year, a prize pool of +€316 and up to 96% energy autonomy for a return on investment over 7 years. © mylight150
A hybrid positioning to capture more value
THE positioning of mylight150 is based on dual skills: on the one hand the design of hardware control solutions and on the other the supply of electricity. This configuration allows it to act simultaneously on both physical and economic flows.
A single manufacturer does not have direct access to electricity market signals. Conversely, a supplier lacking management tools cannot intervene on the actual consumption of equipment. By combining these two dimensions, mylight150 activates additional levers that single-sector players cannot activate: spot market prices, physical network flows, Enedis reward mechanisms.
On an industrial level, the boxes are assembled in France, in partnership with players specializing in electrical panels. The components mainly come from European suppliers, including Schneider Electric. This structuring supports the company’s growth on the market. According to Enedis connection data in the first quarter of 2025, mylight150 represented around 15% of new solar installations associated with an energy contract, compared to 3% two years earlier. © mylight150
“We are big enough to no longer be ignored. But the question that remains is simple: when the State leaves the game, who guarantees that your solar installation continues to earn you something? This is exactly what the Robin box set does.” explains Ondine Suavet, the CEO of mylight150.
t / © mylight150
