Glossary
Repowering
Also known as: PV modernisation, System renewal
Repowering is the modernisation of an existing photovoltaic system by replacing modules, inverters or the mounting structure with current technology. Because modern modules achieve considerably higher efficiencies than systems from the 2000s and early 2010s, the yield on the same roof area rises substantially. Repowering typically pays off for ageing systems with expiring feed-in tariffs, frequent defects or sharply increased electricity demand.
The trigger for repowering is rarely a total failure. More often, feed-in contracts expire, spare parts for old inverters become scarce, or the site’s electricity demand has grown through electrification and charging infrastructure while the old system was designed for the consumption profile of fifteen years ago.
In a repowering project, the system is redesigned for today’s self-consumption, often combined with battery storage and energy management. Whether the modernised system qualifies for a new Einmalvergütung depends on the individual case and is checked as part of the subsidy assessment.
Ampere Dynamic assesses whether repowering or expansion is the more economical option as part of its energy consulting.