The latest customer satisfaction study conducted by EUPD Research reveals that 90.2 percent of surveyed E3/DC customers rate their storage system as “very good” or “good.” Customers highly appreciate the All-In-One concept, the “Made in Germany” label, and the high product quality. Thanks to consistently high satisfaction ratings, E3/DC has once again been awarded the prestigious customer satisfaction seal from EUPD Research, with an overall rating of “very good,” for the year 2025.
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E3/DC storage systems chosen for superior product quality
Customers choose E3/DC energy storage systems primarily because of their high product quality, which has been consistently confirmed over the years. The warranty and update capability are also important factors in their decision-making process. E3/DC’s All-In-One concept, which combines the battery storage, solar inverter, proprietary energy management, and backup power function in one system solution, is highly valued by customers.
Strong customer satisfaction drives high recommendation rate for E3/DC
The high level of product satisfaction among customers is evident in the high referral rate for E3/DC storage systems. Approximately 70 percent of surveyed customers express a strong likelihood of recommending their E3/DC system to others. This serves as a testament to the consistently strong customer satisfaction experienced with the company’s products.
New survey reveals the benefits of E3/DC’s 360° energy management
The recent survey evaluates for the first time the enhanced 360° energy management, which is available free of charge to all E3/DC customers. It enables not only self-sufficiency with solar power but also the utilization of dynamic electricity tariffs and optimizes the procurement of cost-effective electricity from the market through the AI 360° feature. Customers emphasize in the survey that the dynamic tariffs help them to further optimize the usage of the storage system and electric vehicles, while reducing the electricity costs from the grid.
Bidirectional charging is becoming an increasingly important topic, as 75 percent of surveyed customers express interest in E3/DC’s bidirectional DC charging solution. However, the biggest challenge lies in the technological development required by automakers, as well as navigating the regulatory requirements and approval processes.
E3/DC reaffirms its position as a leading energy storage provider
The results of the 2024 customer satisfaction study once again confirm the high quality and innovative power of E3/DC. The company solidifies its position as one of the leading providers of energy storage systems through the renewed award of the “Sehr gut” seal by EUPD Research. The introduction of new technologies and features demonstrates that E3/DC continues to set standards for sustainable and independent energy supply. CEO Markus A.W. Hoehner comments on the results and emphasizes the trust of customers in the company and its innovative solutions. Director Sales Thomas Steinacker is pleased with the consistently high customer satisfaction and the needs of customers that are met by the developments of E3/DC.
