Programm Photovoltaik Ausgabe 2008 ... - Bundesamt für Energie BFE

PV-BUK
Eidgenössisches Departement für
Umwelt, Verkehr, Energie und Kommunikation UVEK
Bundesamt für Energie BFE
BETRIEBS- UND UNTERHALTSKOSTEN VON
PV-ANLAGEN
Annual Report 2007
Author and Co-Authors S. Stettler, P. Toggweiler
Institution / Company Enecolo AG
Address Lindhofstrasse 52, CH - 8617 Mönchaltorf
Telephone, E-mail, Homepage +41 (0) 44 994 90 00; info@enecolo.ch; www.solarstrom.ch
Project- / Contract Number 102070 / 152575
Duration of the Project (from – to) 1. März 2007 – 31. Januar 2008
Date 13.12.2007
ABSTRACT
Several organisations in Switzerland assume for PV systems maintenance costs of 12 to 16 Rp./kWh.
These costs are not only higher than the maintenance costs of thermal or hydraulic power plants but
also higher than the power generation costs for conventional power (hydro, nuclear, coal). This would
mean, that PV systems can’t compete with conventional power plants due to their high maintenance
costs.
Goal of the project PV-BUK was to determine the costs for facility management, to estimate the future
cost development and to propose activities for further decrease of the operation and maintenance
costs for photovoltaic systems. The study was financed by the Swiss Federal Office for Energy, the
utility of Zurich (ewz) and the Energiefachstelle Basel. Project partner were the companies ENVI-
SION, BE Netz and project leader Enecolo AG. Additionally the work was coordinated with the diploma
thesis „Betriebs- und Unterhaltkosten von PV-Anlagen“ from Mr. Reich, University of Biberach.
In 2007 information about the actual cost situation was collected by literature study, but also in interviews
and surveys with PV experts and PV owners. Afterwards, all results were discussed at a workshop
with about 20 Swiss PV experts. The results show that the operation costs per kWh energy yield
decrease if the size of the PV system and the specific yield of the PV system increase. The major part
of the maintenance costs is used for spare parts, especially for the inverter. Some matters of expense
show a wide range of costs, e.g. roof rental, insurances and costs for administration.
In future the maintenance costs will decrease further, mainly because they are partly linked with the
investment costs (e.g. insurance costs). Main optimisation potential exists in the monitoring of the PV
systems and a fast service in case of malfunctions.
In 2008 the project team will propose average maintenance costs for several reference PV systems
and a catalogue of measures to lower the maintenance costs of PV systems.
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