Plant design made easy –
now also online

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Designing PV plants is easier than ever now, with Sunny Design Web. You can open Sunny Design Web in any Web browser or on an iPad/Android tablet. Then simply enter all the required information and within a few minutes you will receive the optimum plant configuration. The Web application provides solar power professionals and plant designers with a user-friendly interface. Along with the technical inspection of different components, the software also provides data for economic evaluation of the plant. The end customer gains a customized PV plant and the solar power professional saves valuable time. Once you have completed the free registration, you will have access to exclusive features to serve you better.


  • Optimal design for grid-connected PV plants
  • Tips aimed at plant optimization
  • Free registration


  • Database of current PV modules
  • Use of high-resolution meteorological data
  • Generation of design proposals
  • Energetic evaluation of an operational year
  • Forecast of projected self-consumption
  • Custom calculation of the optimum dimensioning for inverters


  • Worldwide location support
  • Import of your own load profiles and meteorological data
  • Access via Web browser, iPad, or Android tablet

Release Notes Sunny Design 3.10

  • In Sunny Design there are now three different project types available which are individually tailored to specific requirements: PV system without self-consumption, PV system with self-consumption, and PV hybrid system. These projects are identified in the overviews by corresponding symbols.
  • In the project data it is now possible to enter active power limitation specifications manually within a wide setting range.
  • In projects with self-consumption, the Sunny Home Manager can be used to limit active power, e.g., for implementation of the 70% cap in accordance with the Renewable Energy Sources Act (EEG). This is also taken into account in the yield forecast.
  • Also for projects with self-consumption, a new planning stage has been introduced under the heading "Define load profile". This provides not only a chart of average daily profiles, but also an editor for creating individual load profiles.
  • The design now takes into account the requirements of country-specific standards in Belgium (RGIE), Australia (AS/NZS 5033) and Italy (CEI-021).
  • The new section "Planning of PV system monitoring" provides the possibility of integrating communication products (hardware and software) for system monitoring, system management and visualization of key system data in the PV system. This new function also offers design options based on the specific requirements for PV system monitoring.
  • The sizing of AC cabling now also supports split-phase grids.
  • Project documentation for design alternatives can now be created quickly and easily.
  • The dialog for creating your own PV modules has been optimized. All mandatory specifications have been condensed in one list to facilitate their entry.
  • Missing PV module data can now be transmitted by e-mail via a link on the homepage.
  • The user interface and the documentation are now also available in Japanese.
  • The new version has been prepared for inverters with integrated battery. Their properties will in future be taken into account for design, yield simulation and self-consumption forecasting.

Changes in Version 3.01

  • The design rules have been revised and now allow for a more flexible dimensioning of the module strings. This is based on a reassessment of the design-relevant minimum string voltage and in consideration of the starting voltage of the inverter. You can find more information here: Designing PV Plants Optimised for Economic Efficiency - Technical Information
  • The sorting of the design proposals by economic viability has been improved.
  • The increased self-consumption with battery option is now possible with the Sunny Island 6.0H. The user interface has been extended to display the degree of self-sufficiency and the annual battery cycles. In addition, filtering of the battery system has been made available.
  • Information regarding the available communication interfaces is now displayed in the Sunny Tripower TL-20.
  • The current nominal power behavior of the design is now graphically presented in the String Editor. Also, the connected peak power and number of modules is displayed.
  • The detail-view of the inverter design has been supplemented with additional helpful tool tips.
  • New locations: Chile: Arica, Copiapó, La Serena, Concepción, Temuco. Switzerland: St. Gallen, Frauenfeld. Indonesia: Surabaya, Jakarta, Kuching, Medan, Padang, Palembang, Samarinda. South Korea: Busan, Daejeon, Gwangju 

User Manual

SUNNY DESIGN 3 / SUNNY DESIGN WEB 3.02 - Design of PV Hybrid Systems SDW-Hybrid-BA-en-10.pdf
  • Type: User Manual
  • Language: English (Worldwide)
  • Number: SDW-Hybrid-BA-en-10
  • Version: 1.0

Technical information

Designing PV Plants Optimised for Economic Efficiency - Technical Information PV-Ausl-TI-en-10.pdf
  • Type: Technical information
  • Language: English (Worldwide)
  • Number: PV-Ausl-TI-en-10
  • Version: 1.0