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References: Operation and maintenance of PV systems

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Customised cleaning process for PV system in a cement plant

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Revamping – refurbishment of a 4 MW photovoltaic plant

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Customised cleaning process for PV system in a cement plant

PV-Dachanlage Reinigung | © Pfalzwerke
The challenge

Photovoltaic systems in industrial environments place special demands on operation and maintenance. At the cement plant's rooftop system, stubborn cement dust accumulated on the modules – conventional PV cleaning methods were unable to remove the dirt. Without a tailor-made solution, significant yield losses were imminent.

The project at a glance

  • Stubborn cement dust contamination 

    rendered conventional PV cleaning methods ineffective

  • Development of a special O&M cleaning process
  • Result: Long-term cleaning and consistently high PV yields

The Pfalzwerke solution

Reinigung Solaranlage | © Pfalzwerke
As an experienced partner in the field of photovoltaic O&M services, we developed an innovative process in collaboration with a service partner.

  • Biodegradable substances reliably dissolve even extremely stubborn deposits

  • Cleaning robots with special spray technology adapted to the requirements of the PV system

  • Optimised cleaning interval from twice a year to just once a year today

Reinigung Photovoltaikmodule Sonnenuntergang | © Pfalzwerke

The result

The photovoltaic system reliably delivers maximum yields, and cleaning is environmentally sustainable and economically efficient.

Monitoring, Maintenance and Beyond

This solution shows that the operation and maintenance of PV systems at Pfalzwerke involves more than just standard services such as monitoring and maintenance.

Our specialised services range from special cleaning and drone thermography to technical retrofits. This is how we ensure the long-term performance and value retention of your photovoltaic investment – even under special conditions.

Get advice now & receive a quote
Alexander Pulz
Head of Operations and Maintenance (O&M) B2B - Business Solutions
Pfalzwerke Aktiengesellschaft
Wredestraße 35 67059 Ludwigshafen
+49621 585-3555
Alexander Pulz | © Pfalzwerke
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Revamping Deesen – Efficient refurbishment of a 4 MW photovoltaic plant

The challenge

The photovoltaic system, commissioned in 2013, began showing irregular faults in inverters from a specific batch after several years of operation. The goal was to ensure the long-term performance and operational reliability of the 4 MWp system – with minimal downtime and a forward-looking use of resources.

The project at a glance

  • The photovoltaic system showed intermittent inverter failures
  • Preventive and long-term optimization was carried out during operation
  • Result: Reliability and efficiency of the system permanently ensured

The Pfalzwerke solution

Revamping with a focus on efficiency and future orientation

With its many years of experience in the PV sector and its own planning expertise, we developed a tailor-made concept for the targeted repair of the photovoltaic system. Instead of carrying out standardised replacement measures, the focus was on preventive and long-term optimisation:

  • Defective and potentially affected inverters were repaired or preventively overhauled

  • Plant operation remained largely stable during the work

  • Short intervention time: After only about a week, the 4 MW plant was fully operational again

  • High cost-effectiveness: Efficient implementation with an optimal cost-benefit ratio

The result: this targeted repair work enabled us to ensure the long-term reliability and efficiency of the plant – a prime example of future-oriented revamping of photovoltaic systems.

Monitoring, Maintenance and Beyond

This project is part of our extensive operations portfolio. For every customer, we assess whether a cost-effective repair or a technically optimized revamping solution offers the greatest value.
Get advice now & receive a quote
Alexander Pulz
Abteilungsleiter O&M B2B - Business Solutions
Pfalzwerke Aktiengesellschaft
Wredestraße 35 67059 Ludwigshafen
+49621 585-3555
Alexander Pulz | © Pfalzwerke
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Pfalzwerke Hauptgebäude | © Pfalzwerke

Why choose Pfalzwerke as your O&M partner?

  • Over 150 PV plants managed in Germany, the Netherlands and the United Kingdom (UK) with more than 600 MWp
  • Active in the PV business since 2003 – in Germany, the Netherlands and the UK
  • Over 1,500 employees in the Pfalzwerke Group
  • 110+ years of experience in energy