OPHELIA project launch: a solar canopy demonstrator along the ViaRhônaAug 31, 2023
The OPHELIA research project aims to promote the development of linear photovoltaic power plants by installing solar panels on long, narrow land surfaces (running alongside dikes, roads, railways, etc.). Selected in 2023 as the winner of the “DEMO TASE” call for proposals launched by the French Agency for Ecological Transition (ADEME), and developed by five partners (CNR, Nexans, Schneider Electric, SNCF, and SuperGrid Institute), OPHELIA is a research project focused on the electrical architecture of linear photovoltaic power plants and their integration into the built environment.
A solar canopy demonstrator will be deployed over a near-900-meter section of the ViaRhôna—a cycling route following the Rhône River—in the Vaucluse department by 2028.
Set to showcase a truly disruptive technology, the OPHELIA project will help accelerate regional photovoltaic development without creating any land-use conflicts, as it will make use of linear land that has already been developed.
A promising future for linear photovoltaic power plants
Though faced with a scarcity of land available for new projects, the photovoltaic industry remains key to hitting the energy transition targets set by the French State. Long linear photovoltaic power plants provide a response to land scarcity, as they help optimize the use of long, narrow land surfaces and structures that have already been designated for other uses (dikes, spaces alongside railways, roads, cycle paths, etc.), leaving natural spaces they are. The wedges of land in question retain their original use while electricity production becomes a complementary activity. France’s gross development potential is estimated at more than 60,000 kilometers, corresponding to an installed capacity of nearly 60 GWp.
With the OPHELIA project, CNR and its partners will be testing a medium-voltage direct current electrical architecture and paving the way for the development of projects on long linear land, spanning at least 20 kilometers.
Disruptive technology developed for long-distance power transmission
In line with two of the photovoltaic industry’s goals, the OPHELIA project aims to exploit linear land running alongside existing infrastructure and reduce long cable-related electrical losses by developing technological building blocks that make it possible to replace alternating current with medium-voltage direct current (MVDC).
OPHELIA is an innovative R&D project comprising electrical architecture design, prototype production, and on-site testing.
“ Nexans is proud to be involved in the OPHELIA project to develop a new, optimized electrical architecture for linear photovoltaic power plants. The replacement of alternating current by medium-voltage direct current for power transmission purposes marks a technological breakthrough that reduces power losses. Innovation capable of facilitating the energy transition and sustainable electrification is a key focus for us as well as a means of developing new solutions like this demonstrator, helping to reduce our impact on the environment. ”
Max-André DelannoyTechnical and Innovation Vice President at Nexans
The demonstrator will consist of a series of three solar canopies, installed over around 900 meters of the ViaRhôna cycling route—which follows the Rhône River—in Caderousse in the Vaucluse department. Expected to have an installed capacity of around 900 kWp (generating enough electricity to meet the annual needs of approximately 700 people), the demonstrator will comprise 30 solar canopy structures. The panels will be angled toward the east and the west, forming a roof.
The partners involved in the project will be given the opportunity to design and conduct on-site testing of an electrical architecture and all the equipment required to transmit MVDC electricity from the point of production to the point of delivery.
The construction and testing phases are scheduled to take place between 2025 and 2028, following three years of engineering design studies, R&D, and prototype development.
An innovation-focused project supported by the French State and executed by ADEME
The OPHELIA project was selected as the winner of the “Technologies Avancées pour les Systèmes Énergétiques : DEMO TASE” call for proposals launched by ADEME in 2022.
Representing a total investment of over €20 million, the project is co-funded by the French State (contributing around 40% of funding) as part of the France 2030 investment plan, which is being executed by ADEME in a bid to enhance the country’s industrial competitiveness and future technology development.
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