The role of photovoltaics in industrial revamping: revalued assets
Many Italian companies, particularly in the manufacturing and logistics sectors, still carry on their balance sheets photovoltaic systems installed during the golden years of the Conto Energia incentive scheme (2010–2013). Today, these assets have surpassed half of their theoretical useful life.
However, viewing them merely as “aging systems requiring maintenance” is a strategic mistake. A 12–15-year-old plant naturally experiences performance decline: out-of-warranty inverters, modules affected by degradation phenomena (e.g., PID), and worn cabling can significantly reduce productivity, sometimes leading to efficiency losses between 10% and 20%, depending on components, maintenance history, and operating conditions.
Industrial photovoltaic revamping is not simply a repair expense—it is a financial lever. Thanks to technological advancements, obsolete components can now be replaced with high-performance solutions, transforming a declining asset into a regenerated one capable of generating new cash flows.
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Revamping vs. repowering: definitions for business decision-makers
Before evaluating the investment, it is necessary to distinguish between the two types of intervention, as they have different regulatory and tax implications.
Revamping (refurbishment):
A conservative intervention aimed at restoring the system’s original performance. Faulty inverters or degraded panels are replaced while keeping the nominal capacity essentially unchanged (with limited variations, to be assessed on a case-by-case basis depending on the applicable incentive scheme and GSE provisions).
Repowering (capacity upgrade):
A true technological upgrade of the system. Old modules (e.g., 250 Wp) are replaced with next-generation modules (e.g., 550 Wp), using the same surface area or even reducing it. The goal is to increase installed capacity in order to produce more energy.
For energy-intensive companies, a capacity upgrade (the additional capacity portion) is often the most rational choice: it allows increased self-consumption by leveraging existing, already amortized infrastructure (cables, substations, rooftop space).
Would you like to explore the topic further and understand which solution is truly the most advantageous for your business context? Discover our dedicated guide: Photovoltaic revamping and repowering: which strategy for your company.
Financial impact: CAPEX, OPEX and depreciation
From a CFO’s perspective, combining revamping and repowering shifts costs from “Operating expenses” to “Investments”. Here is how the operation affects key financial items:
- Capitalizable CAPEX: the extraordinary intervention increases the asset’s value on the balance sheet, enabling a new tax depreciation schedule.
- EBITDA impact (reduced OPEX): replacing aging inverters and components (revamping) lowers corrective maintenance costs and reduces downtime, improving operating margin.
- Incremental cash flow: additional kWh generated through capacity upgrades (repowering) translate into lower grid purchases or dedicated energy sales.
- Compliance risk mitigation: regulatory upgrades (e.g., interface protection devices) reduce the latent risk of losing historical incentives.
Financial instruments: impacts on cash flow and the balance sheet (OIC vs IFRS)
The most common concern among plant owners is: “If I modify the system, will I lose the old Conto Energia incentive?”. The answer is no, provided the process correctly follows the GSE operational procedures and SIAD requirements. The relevant framework is based on the principle of accounting or physical separation:
- The original capacity continues to receive the historical incentive tariff.
- The additional capacity does not receive incentives, but generates value through self-consumption or market sales.
For a practical deep dive into procedures and how to manage the incentivized portion versus the additional portion, read the guide: Repowering 2010–2013 systems and GSE procedures.
Cost-benefit analysis: how much does an upgrade cost?
Many clients ask: how much does it cost to upgrade a 100 kW industrial photovoltaic system? There is no standard figure, as costs depend on the condition of the balance of system (BOS), the type of inverters required, and grid connection costs.
However, a repowering intervention generally has a lower cost per kWp compared to a new greenfield installation, since cable ducts, substations, and basic authorization procedures can often be reused. In many cases, the investment may amount to between 50% and 60% of a new installation.
Note: the range varies significantly depending on the actual reuse of the BOS, the condition of the support structures, and any upgrades required for the grid connection.
Drivers that accelerate ROI (in many cases leading to payback within 5 years, depending on self-consumption levels, BOS condition, and connection costs):
- Efficiency recovery: restoring production to 100% of its potential.
- Additional self-consumption: covering new energy needs (e.g., heat pumps, electric vehicle fleets).
- Tax incentives: access to tax credits (e.g., Transition 5.0) if the intervention meets innovation and energy consumption reduction requirements.
* The percentages and payback estimates provided are general indications. Economic feasibility must be verified using real data on energy production, self-consumption, and specific grid connection conditions.
If power charges and demand peaks also weigh on the business plan, integrating a BESS (battery energy storage system) can improve operational stability and cost predictability. Learn more: Industrial peak shaving and BESS systems.
The role of the technical partner in managing bureaucratic procedures
Revamping is not just an electrical intervention. It is a complex administrative process. Poorly managing communication with the GSE (via the SIAD portal) or the grid operator can, in the worst-case scenario, lead to the suspension of incentives.
Southenergy acts as a single point of contact: from instrumental diagnostics to assess the asset’s health, to business planning for the CFO, through to the full management of TICA and GSE procedures. We ensure that every technological upgrade fully complies with the rules required to maintain historical tariff schemes.
The role of the technical partner in managing bureaucratic procedures
Turn maintenance costs into a high-yield investment. Request a technical and financial assessment of your photovoltaic asset.
FAQ – Frequently Asked Questions
Ordinary maintenance (e.g., cleaning, replacing a fuse) is an operating expense (OPEX) that is fully deductible in the fiscal year. Revamping or repowering that results in a significant increase in productivity, useful life, or installed capacity is considered extraordinary maintenance and is capitalizable (CAPEX): the cost is added to the asset’s value and depreciated over time.
Yes, if there is an increase in power injected into the grid. A new grid connection procedure (TICA) must be initiated with the network operator for the additional capacity. If the intervention is limited to revamping (component replacement without increasing nominal capacity), a prior notification is usually sufficient.
ROI is calculated by comparing the CAPEX of the intervention with the total cash flows generated:
(Value of recovered energy through efficiency gains + Value of additional energy from capacity upgrades + Savings from avoided corrective maintenance costs).
Absolutely. Our in-house technical office manages the entire bureaucratic process: from feasibility assessment, to the grid connection procedure, through to updating the GSE SIAD portal, ensuring continuity of historical incentives and correct registration of all modifications.
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