Intelligent measuring system
The rollout of smart meters is to be significantly accelerated in Germany in the coming years. The rules for the so -called intelligent measuring systems (IMSYS) are not easy. That is why we answer the most important questions here.
The most important thing shortly
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Germany accelerates the rollout of smart meters.
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Recipient: Start 2025; concerns users with over 6,000 kWh/year, certain systems. Goal: 25% by 2025 and 95% connected to 2031.
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Installation: By local measuring position operators, but options for customers.
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Cost: From € 20/year, depending on the equipment.
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Advantages: Dynamic electricity tariffs and direct marketing for PV system owners possible.
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Construction: Combination of digital points and smart meter gateway; Optional tax box.
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Energy management: No additional advantages by connecting to IMSYS.
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Our app works with and without IMSYS, no disadvantages compared to a locally installed energy management
Who gets an iMSys?
The mandatory rollout is scheduled to start in 2025. But an installation can also be made beforehand. Mandatory installation is carried out by users
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More than 6,000 kWh of consumption per year
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a controllable consumption system such as in particular Wallbox or heat pump (§14a EnWG)
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Own production system (e.g. PV system) with more than 7 kWP installed performance
At the end of 2025, 25% of this compulsory rollout should be connected. 2031 then 95%.
More information on the Website of the Federal Ministry of Economics and Climate Protection
Who installs the IMSYS?
The so -called basic measuring point operator (MSB). In most cases, this is a sister company of the local distribution network operator. If the MSB does not comply with its obligation to roll out, another measuring point operator can be entrusted with this task after a while.
However, each customer also has the right to commission a so -called competitive measuring point operator to install.
What does an IMSSYS cost?
The cost of an IMSYS for end customers start at 20 euros per year. For customers with controllable consumer devices, the basic price is already 50 euros annually. In addition, there may be additional costs, for example if the customer's investments have to be connected to the control system or for conversion of the meter cabinet.
More information about the costs is available on the
The Federal Network Agency website
What are the advantages of the IMSYS?
There are also a few advantages in contrast to the additional costs:
Dynamic tariffs
More and more suppliers are offering a dynamic tariff. With this, the electricity price varies throughout the day, usually depending on the stock market power price. For customers with controllable devices, this offers the opportunity to shift their electricity consumption to cheaper times. This also serves climate protection, since electricity generation usually comes from renewable energies at a high proportion of renewable energies.
We support optimization on dynamic tariffs.
Direct marketing
Owners of a PV system can also register them with an intelligent measuring system for direct marketing. However, whether this is worth it and whether the revenue of direct marketing is above the costs of the providers and justify the effort depends very much on the stock exchange power prices.
Current values on the market value of solar systems can be found netztransparenz.de
What does the IMSYS include and can it control my devices?
The intelligent measurement systems essentially consists of two components:
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a modern measuring system: one or more digital points, measure the removal and feedback
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Smart Meter Gateway: A local hub that stores the meter data, validated and aggregated and transmitted to the backend of the measuring point operator
In addition, a so -called control box can also be connected to the smart meter gateway. The measuring point operator is also responsible for the installation of the tax box and also legally defined price tops apply.
This FNN tax box enables the network operator in particular. For this purpose, controllable consumption devices such as wall box and heat pump as well as the PV inverter are connected to the tax box. The distribution network operator may control all of these devices in extreme emergencies (this is regulated in §13a EnWG and §14a EnWG).
The FNN tax box currently has two interfaces: relay circuit and EEBUS. The devices can therefore be coupled via both paths.
Do I need energy management (HEMS) that can be connected to the smart meter gateway?
Clearly: no.
There are No regulatory or legal requirements! The manual or automated control of the devices in the household, for example, for the use of the PV surplus or with low electricity prices can be done directly between the end device and the backend. Data transmission via the smart meter gateway is not required.
For this purpose, the measuring position operating law (§19 paragraph 2 MSBG) clearly defines that market control acts can be done away from the smart meter gateway infrastructure. The use of the tax box infrastructure is only mandatory for network operators for the standard services defined in §34 MSBG, such as the control within the framework of §14a EnWG.
Specifically, this means that use is also possible for customers with an intelligent measuring system and installed control box.
In addition, there is also No added value for the customer by connecting his energy management to the IMSYS and the control box.
Information on current feed -in or withdrawal from the power grid can be removed from the modern measuring device via a outdoor head.
The network operator is controlled by the network operator within the framework of §14a EnWG for each individual device. Energy management would only have to forward these control commands.