The solar sunset: why decommissioning is the industry’s next structural reckoning
The sun is setting on the first generation of solar assets. How we manage that transition will determine whether the industry’s green promise remains a reality or becomes a cautionary tale. But as our experience has shown, true circularity begins the moment the first module is unbolted. Everything that follows depends on the discipline of execution.
In my opinion, the solar industry is at a critical juncture. The rapid deployment of utility-scale PV assets has led to a growing awareness of the need for end-of-life planning. The first generation of solar assets is now reaching the end of its useful life, and the industry must confront the challenges of decommissioning. Without proper planning and execution, the industry risks becoming a cautionary tale, with its green promise tarnished by poor handling and unclear accountability.
One thing that immediately stands out is the need for early planning. Too often, decommissioning is considered too late, with substantial attention given to yield modelling, grid connection, financing, engineering, procurement, and construction (EPC), while the eventual dismantling of the asset is reduced to a vague cost assumption or a standard contractual clause. This underestimates both the complexity and the strategic importance of the exit phase.
From my perspective, a credible decommissioning plan should include several core elements. It should clearly define responsibilities, including ownership of dismantling, waste handling, recovery routes, and land restoration obligations. It should set out a technical understanding of the installed hardware, including module types, mounting structures, cabling, inverters, substations, and any site-specific constraints. It should also take into account the financial side, including reserves, guarantees, or other mechanisms that ensure sufficient funds will be available when the time comes.
In my experience, the benefits of planning early extend beyond administrative and financial considerations. They also extend into engineering. Projects that are designed with future dismantling in mind can significantly reduce later complexity. This begins with documentation. Accurate records of installed components, layouts, cable routing, serial information, weight of the individual materials used, and any later modifications are invaluable.
One practical example of the growing importance of structured PV decommissioning is the Neustadt solar park in Neustadt an der Weinstraße, Germany. The decommissioning was carried out by PVMRC on behalf of Pfalzwerke and shows clearly that decommissioning is far more than simply removing modules from a site. It is a coordinated process that combines technical planning, safe execution, logistics, material handling, and a constant focus on preserving value.
The Neustadt project also highlights the direct link between decommissioning and repowering. The former 2MW plant is being upgraded with new modules, modern inverters, and optimised cabling to reach almost 4.6MW on the same site, more than doubling the original output. The retained substructure helped conserve material and allowed existing infrastructure to be reused without additional land take.
In my opinion, the Neustadt project reinforces a wider point for the industry: decommissioning is not simply the end of a solar asset’s life. It is a strategic transition phase that can influence economics, compliance, and future land use. The companies that recognise this transition early will be better placed to protect value, meet expectations from investors and regulators, and contribute credibly to a more circular energy economy.
In conclusion, the solar industry must embrace the challenge of decommissioning. By planning early, coordinating closely, and focusing on preserving value, the industry can ensure a smooth transition for its first generation of assets. The sun is setting, but with careful management, the industry can rise again, stronger and more sustainable than ever before.
