About All-in-One Storage
All-in-one storage systems combine battery storage, a hybrid inverter, battery management, and often energy management within a single integrated solution. Some systems even include smart meters and backup power functionality. For installers, all-in-one systems offer significant advantages: fast commissioning, pre-configured components, and reduced on-site complexity. At the same time, end customers benefit from a compact design, intelligent control, and a high level of system safety. In addition, these systems are often aesthetically designed, making them well suited for residential environments.
What Are All-in-One Storage Systems?
An all-in-one storage system combines several key components of a photovoltaic (PV) system into one integrated solution:
- Battery storage system
- Hybrid inverter
- Battery Management System (BMS)
- Energy Management System (EMS)
- In some cases, backup power or emergency power functionality
Unlike traditional modular storage solutions, there is no need to combine multiple devices from different manufacturers. This significantly reduces installation effort, coordination challenges, and potential sources of error.
All-in-one storage systems are particularly suitable for:
- Single-family homes
- Standardized residential projects
- Small commercial applications
- New PV installations
- Customers looking for simplicity and fast implementation
Many systems are also suitable for outdoor installations and offer integrated backup power or off-grid functionality.
Benefits of All-in-One Systems
- Fast and easy installation: Since all components are integrated or perfectly matched, installation and configuration efforts are significantly reduced.
- High system reliability: Pre-configured components minimize compatibility issues. The inverter, battery, and EMS belong to the same ecosystem and communicate seamlessly with one another.
- Compact design: All-in-one storage systems require minimal space, less cabling, and often feature an attractive design.
- Integrated monitoring & EMS: Many systems include intelligent energy management functions with app-based monitoring, load management, and backup control. A high-quality EMS automatically optimizes self-consumption and energy flows.
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Ideal for standard applications: For typical residential projects, all-in-one systems provide a highly cost-effective and efficient solution with minimal space and planning requirements.
Are There Any Drawbacks?
Despite their many advantages, all-in-one storage systems are not the ideal solution for every project.
- Limited flexibility: Compared to modular systems, expansion options and custom combinations are often more restricted.
- Vendor dependency: Since all components come from a single ecosystem, users become more dependent on one manufacturer.
- More difficult component replacement: In the event of a fault, replacing individual components can be more complex than with modular systems.
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Partially limited scalability: For highly customized projects or larger commercial applications, modular storage solutions or standalone components are often more flexible.
All-in-One Is the Right Choice If …
- Simple installation is a priority
- Fast project implementation is required
- Minimal coordination effort is desired
- A compact, complete system is needed
- Residential or small commercial projects are being implemented
Modular Systems Are Often Better If …
- Maximum flexibility is required
- Custom system design is necessary
- Future expansion is a key consideration
- Complex commercial projects are being planned
All-in-One Storage Systems at Krannich Solar: An Overview
GoodWe ESA and ESA Athena
The GoodWe ESA series is a three-phase all-in-one system. It stands out with excellent backup capabilities, high storage capacities, and a robust safety concept—whether installed indoors or outdoors. The Athena, on the other hand, is an all-in-one system specifically designed for micro PV systems and balcony solar installations.
Features & USPs
- 5 to 30 kW and 5 to 108 kWh – all in a single tower
- 200% DC oversizing capability
- Backup switchover in less than 4 ms – UPS-level performance
- IP66 protection class for indoor and outdoor applications
- Strong focus on safety, including a 6-layer protection concept, AFCI 3.0, aerosol fire suppression, integrated heating, and more
Positioning
A flexible all-rounder. An excellent choice for both small residential installations and medium-sized commercial projects. Particularly strong smart home integration - especially within the GoodWe ecosystem.
SolaX T-X3-IES
The SolaX X3-IES offers outstanding smart home integration, including energy generation and consumption forecasting as well as connectivity to virtual power plants (VPPs). It is also the scalability champion in the Krannich Solar portfolio, with storage capacities of up to 300 kWh.
Features & USPs
- 5 to 15 kW power output
- Scalable to up to 10 systems in parallel, reaching a maximum capacity of 300 kWh
- 200% DC oversizing and 200% EPS overload capability for up to 10 seconds
- Backup switchover in less than 10 ms
- IP66 protection rating for indoor and outdoor applications
- AI-powered energy management, Time-of-Use functionality, and intelligent load management
- VPP connectivity via IEEE 2030.5/OpenADR
Positioning
An especially intelligent storage solution, particularly relevant for applications involving dynamic electricity tariffs or smart home systems. Thanks to its high scalability, it is suitable for both residential installations and small and medium-sized commercial projects .
Pylontech Force H3X
The Pylontech Force H3X is particularly easy to install. While simplified installation is a key advantage of all-in-one storage systems compared to traditional battery and inverter setups, Pylontech takes it a step further with a manufacturer-reported installation time of just 15 minutes.
Features & USPs
- 8 to 15 kW and 10.24 to 35.84 kWh, scalable up to 210 kWh
- 1C charge/discharge capability and up to 97% efficiency
- Multiple safety features, including AFCI 2.0, C5M salt mist resistance, and integrated emergency shutdown
- More than 8,000 charge and discharge cycles
Positioning
Thanks to its scalability, it covers almost the same application range as the SolaX X3-IES. It is particularly attractive for projects where extended battery lifetime is a key requirement. At the same time, it offers a relatively competitive price point. Learn more about Pylontech all-in-one systems .
Sofar PowerAll
The Sofar PowerAll is a cost-effective all-in-one storage solution for both indoor and outdoor applications. It offers reliable backup functionality, numerous safety features, and, thanks to its three MPPTs, is well suited for more complex PV system designs.
Features & USPs
- 5 to 12 kW power output and 5.12 to 20.48 kWh storage capacity
- Compatible with high-current PV modules, supporting up to 20 A input current per MPPT
- Backup switchover in less than 10 ms
- IP65 protection rating for indoor and outdoor installation; the inverter unit is even rated IP66
- AFCI integrated in the inverter, Type II surge protection, and natural cooling
Positioning
Best suited for residential installations and very small commercial projects that do not require highly specialized application scenarios. A technically solid, quiet, and well-integrated solution with attractive value for money.
Sunwoda SunESS
The SunESS focuses on value for money and ease of integration. It is a strong option for cost-optimized residential projects and offers flexible expansion thanks to the compatibility of both older and newer battery modules.
Features & USPs
- 8 to 15 kW power output and 5 to 40 kWh storage capacity
- Supports asymmetric string design
- IP65 protection rating for indoor and outdoor installation
- Numerous integrated safety features
- 12-year warranty
Positioning
A highly cost-effective solution for residential installations and small commercial projects .
Sigenergy SigenStor
The SigenStor’s greatest strengths lie in its ultra-fast backup functionality, fully integrated energy management, and the ability to charge electric vehicles directly via DC power. The system is primarily designed for demanding residential properties and smaller commercial installations with high requirements for energy independence and flexibility.
Features & USPs
- 5 to 30 kW power output and up to 54 kWh of usable storage capacity per tower
- Seamless backup switchover (0 ms) when used with the Sigen Energy Gateway
- Up to 4 MPPTs for complex roof layouts
- Optional bidirectional DC charging for electric vehicles
- Integrated battery optimization and app-based energy management
- IP66 protection rating for indoor and outdoor applications
Positioning
Designed for the most demanding applications , with top-tier requirements for backup power, smart home integration, e-mobility, and premium design.
All-in-One Storage Systems at Krannich Solar
With all-in-one storage systems, installers and professional partners benefit from a compact, efficient, and installation-friendly energy storage solution for modern PV systems. Thanks to the high level of integration, installation time, system complexity, and potential sources of error are significantly reduced. Explore our range of all-in-one storage systems for residential and small commercial projects, including high-performance solutions from GoodWe, Sofar, Pylontech, SolaX, Sunwoda, and Sigenergy.