MORE POSSIBLE FOR YOUR STANDARDS
Retrofit & extend the PV system.
Your photovoltaic system is running. Now a storage tank should charge more solar power on the roof or the electric car with its own electricity? We help with the selection of suitable technology.
From the single component to the coordinated addition: The decisive factor is what fits your existing system and your needs.
Personal advice · Bad Gandersheim
What do you want to retrofit?
Start with your goal. We consider existing devices, desired functions and necessary interfaces together.
Retrofit memory
Use solar power in a time-shifted manner. Storage size and integration depend on surpluses, consumption and existing technology.
Characteristics and use
AC or DC coupling
An AC memory complements the system on the alternating current side with a battery inverter. A DC solution requires a suitable hybrid inverter and a shared battery. The right path is chosen based on the stock.
For the selection
Name inverter type, annual consumption and existing PV power. A larger memory is not automatically the better solution. Also location and measurement are part of the coordination.
Expand the PV system
Add further modules to the roof, garage or carport. Free space and electrical integration are tested together.
Characteristics and use
Check existing structure
Additional modules must fit the roof and the electrical concept. The test shall cover, inter alia, fastening, lines, input values and the distribution of module strands.
Planning for enlargement separately
The additional performance can have a different level of remuneration than the existing system. Network connection, measurement concept and required messages are clarified before execution.
Add inverters
The existing technology is not enough for the new target? An additional or new device can be an option.
Characteristics and use
Supplement or exchange
Depending on the stock, free inputs of the existing device, another inverter or a suitable replacement device are considered. The available connection power alone is not sufficient for this decision.
Taking into account future wishes
A planned memory or other consumers should be mentioned early. Thus, shared device connections and the later control can be incorporated into the selection.
Wallbox with PV store
Charge the electric car with available solar power. Wallbox, measurement and control must work together for this.
Characteristics and use
Include surplus load
For PV overcharges, the controller must be able to detect available power and control the charging process appropriately. A wallbox alone does not provide this function in every installation.
Call existing devices
Inverters, meters, energy management and vehicle are helpful. A possible phase switching depends on wallbox, control and vehicle. Electrical installation and connection are subject to technical inspection.
Solar power for heat
Integrate hot water or a suitable heat pump. The chosen solution depends on the existing heat technology.
Characteristics and use
Distinguishing Hot Water and Heating
A adjustable heating rod can complement a suitable hot water storage tank. The integration of a heat pump is a different task and depends on its interfaces and the existing regulation.
Realistically plan usage
PV yield and heat demand do not always occur at the same time. Existing heating technology, storage temperatures and seasonal demand are therefore part of the coordination.
Complementing energy management
Coordinate memory, wallbox and other consumers. The basis are suitable measured values and supported interfaces.
Characteristics and use
Monitoring or active control
Monitoring makes energy flows visible. An energy management system can also control compatible devices and set priorities between consumers. The extent actually supported depends on the system.
Clear compatibility in advance
Name device manufacturers, models and, where known, software stands. Meter data alone does not guarantee control. Device shares, interfaces and the desired operating mode are tested together.
In four steps to the appropriate supplement.
Describe desire
Storage, more modules, PV charging or heat: Name the target and, if necessary, already planned devices. Several wishes can also be considered together.
Assigning stock
The important interfaces can be narrowed down with inverter type, system size and existing documents. Photos of type plates help with the assignment.
Matching suitable variants
We discuss appropriate components and open test points. Specialist operations, network operators and, if necessary, measurement point operators are involved depending on the project.
Clear the scope of delivery and next steps
You will receive a coordinated proposal for the discussed needs. Installation, commissioning and required messages will be assigned prior to implementation.
What can your PV system do in the future?
Briefly describe your existing system and the desired addition. In the central form the topic is already selected.
This information will assist in the preparation
- Location, year of commissioning and PV performance
- Manufacturer and model of inverter
- Existing memory, counter and energy management
- Desired addition, for example memory, additional modules or wallbox
- Power consumption and photos or documents, if available
Good to know.
Answers to your plan.
Can I retrofit a memory without changing the inverter?
With a suitable AC solution, the existing PV inverter can continue to work. Whether this solution fits depends, among other things, on measurement concept, devices and local conditions. In the case of DC coupling, hybrid inverters and shared battery shall be coordinated.
Can I add modules from another manufacturer?
A combination shall be electrically and mechanically suitable. More important than the brand name are the actual characteristics, the connection and the assembly. A separate module group at a suitable input or another inverter can be an option.
Do I automatically have backup current with a memory?
No, no, no. Replacement current requires a suitable overall system and, if necessary, additional switching technology. Which consumers are supplied with, what performance and under what conditions, must be clarified before the selection.
Can devices from different manufacturers be connected?
Partly. The decisive factors are shared device connections and actually supported interfaces. A common app or network connection does not yet confirm the desired collaboration. Therefore, specify the exact model designations as possible.
Do I need to register the retrofit?
Depending on the change, system operators, meter operators or market master data registers shall be included. Additional generation, storage and new controllable consumers can trigger different requirements. Let this be examined for your project before it is implemented.
What is the difference to repowering?
Retrofit complements functions, for example a storage or PV store. Enlargement adds generation power. Repowering replaces existing technology. In the case of modernisation, these measures can be useful together.
Fits your plan.
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General technical information. The concrete implementation and the services for your inventory will be personally coordinated.