Tenesol: photovoltaic (PV) panels & solar power specialist

On grid back-up systems

When energy storage becomes essential

Increasingly huge expectations

The expanding use of on-grid photovoltaic systems in the building sector will make the addition of an energy storage function essential. Commercial or industrial building managers wish to be able to coordinate their solar energy production in the best possible way. In this case, the ability to store the energy generated by solar panels becomes a key issue.

A guarantee of flexibility

Storing energy gives our customers total flexibility in managing their energy input.  One of the features of photovoltaic solar power production is that it is not constant throughout the day. This is energy produced "when the sun shines": the installation's production peaks during its greatest exposure to sunlight. Depending on the building's purpose, the power consumption peak periods can be at other times of the day, for example when the light fades and the temperature drops. Each installation will thus be able to benefit from tailor-made coordination. The on-going quality of the current will be guaranteed.

A guarantee of safety

Storage provides an emergency backup in a power cut. The manager could for example opt to relieve the electrical grid during peak hours.

The problem of storage: the example of our participation in the Sol-Ion project

A Franco-German research consortium has been created under the Sol-Ion project to find innovative solutions to optimise the storage of energy generated by photovoltaic solar panels. The aim of the Sol-Ion project is to power electrical applications whilst re-injecting unused solar power into the grid. After more than eighteen months of work, the Tenesol Research & Development teams are now entering the full-scale field testing phase. The next step will be industrialisation of the optimum solution. Every component in this solution is key, in particular the technology adopted for the batteries, lithium-ion, a solution that is highly-efficient and extremely resistant to the charging and discharging cycles to ensure optimum system operation.
Self-consumption is therefore possible with this system, which has an ergonomic interface for monitoring the installation's consumption and production. It encourages energy savings as users can monitor their consumption in real time.

This project is part of the Smart Grid development.