Oversizing is the Key to Higher Profitability - SMA technology offers maximum freedom and safety

Technology matters when it comes to extreme oversizing: The Sunny Central inverters from SMA are designed for maximum oversizing capabilities. PV power plant projects with SMA central inverters profit from more flexibility, reliability, technology safety and highest profitability.

Oversizing of PV power plants serves to increase inverter capacity

With oversizing, the PV power plant’s nominal power is achieved faster in the morning, and the PV power plant remains connected to the grid longer in the evening. Calculated for the total operating time of the PV project, higher energy yields can thus be generated. Adequate oversizing increases the profitability of a PV power plant. The Sunny Central inverters from SMA with their robust design offer maximum flexibility for project-specific oversizing.

Oversizing of PV power plants serves to increase inverter capacity
5 Reasons for Oversizing a PV power plant

5 (?? 6 ??) Reasons for Oversizing a PV power plant

  • Irradiation values are not achieved (e.g., in the winter months)
  • Ambient temperatures are too high
  • Pollution of the modules
  • Suboptimal orientation of the modules throughout the day (the factor decreases significantly with tracking systems)
  • Module degradation: module performance drops annually by approx. 0.5%; after 25 years approx.80% of the original nominal power still remains
  • Mismatching losses caused, for example, by cable losses

Taking the mirror cloud effect into account

SMA takes the effect of short-term solar irradiation increase (mirror cloud effect) into account with an additional buffer in the oversizing capacity of the inverters. Thus, SMA inverters can still disconnect the PV array’s short-circuit current up to 6,400 A. This corresponds to an oversizing (peak PV array power in relation to the maximum AC inverter power) of up to 250%.

If you want to learn more about the mirror cloud effect, you can find all information in s´the SMA Whitepaper. (zu Whitepaper)

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SMA Sunny Central 3000

Oversizing with opex benefit

With Sunny Central inverters, developers have the opportunity to get the maximum efficiency out of their PV power plant through unrestricted oversizing capacity while maintaining the same life expectancy, availability and operating costs of the devices.


Sunny Central Inverters offer:

  • High PV voltages up to 1,500 V -> 38% design margin
  • High PV short-circuit current -> 6,400 A (250% DC/AC) taking cloud effects into account 4,800 A (180% DC/AC)
  • Oversizing up to 250%
  • Connect more module power per inverter

Whitepaper: Learn how you can benefit from Oversizing with SMA.

Whitepaper
Learn how you can benefit from Oversizing with SMA.

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