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iMSys - Intelligent Metering System

Updated

Intelligent Metering System (iMSys)

The rollout of smart meters in Germany is set to accelerate significantly over the coming years. The regulations for these so-called intelligent metering systems (iMSys) are complex. We have compiled the most important questions and answers here.

Key points at a glance

  • Germany is accelerating the smart meter rollout.

  • Recipients: Starting in 2025; applies to users with over 6,000 kWh/year and specific systems. Goal: 25% connected by 2025 and 95% by 2031.

  • Installation: Performed by local metering point operators, though customers have options to choose.

  • Costs: Starting at €20/year, higher depending on equipment.

  • Benefits: Enables dynamic tariffs and direct marketing for PV system owners.

  • Structure: Combination of digital meters and a smart meter gateway; optional control box.

  • Energy management: No additional benefits from connecting to an iMSys.

  • Our app works with or without an iMSys; there are no disadvantages compared to a locally installed energy management system.

Who receives an iMSys?

The mandatory rollout is scheduled to start in 2025, though installations can occur before then. Mandatory installation applies to users with:

  • More than 6,000 kWh annual consumption

  • A controllable load, such as a wallbox or heat pump (§14a EnWG)

  • An on-site generation system (e.g., PV system) with more than 7 kWp installed capacity

By the end of 2025, 25% of these mandatory rollout customers should be connected, reaching 95% by 2031.

Who installs the iMSys?

The rollout is the responsibility of the so-called basic metering point operators (MSB). In most cases, this is a subsidiary of the local distribution network operator. If the MSB fails to fulfill its rollout obligation, another metering point operator may be tasked with this duty after a certain period.

However, every customer also has the right to commission a competitive metering point operator for the installation.

How much does an iMSys cost?

Costs for an iMSys for end customers start at €20 per year. For customers with controllable loads, the base price is €50 annually. Additional costs may apply, for example, if the customer's equipment needs to be connected for grid operator control or if the meter cabinet requires modification.

More information on costs is available on the
Federal Network Agency (Bundesnetzagentur) website

What are the benefits of an iMSys?

The additional costs are offset by a few benefits:

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Dynamic tariffs

More and more suppliers are offering dynamic tariffs. With these, the electricity price varies throughout the day, usually depending on the spot price on the energy exchange. For customers with controllable devices, this offers the opportunity to shift electricity consumption to lower-cost periods. This also supports climate protection, as electricity generation during low-price periods typically has a high share of renewable energy.

We support optimization for dynamic tariffs.

Direct marketing

Owners of a PV system can also register their system for direct marketing using an intelligent metering system. However, whether this is worthwhile and whether the proceeds from direct marketing exceed the provider's costs and justify the effort depends heavily on spot prices.