CNets spin-off company CheckWatt delivers the EMS – Energy Management System to Sweden’s largest charging and battery park and which is now built in Malmö. The EMS provides control, operational monitoring and visualization for energy-related data also providing smart control for hybrid inverters of photovoltaic systems to charge batteries and perform frequency regulation to enable connection to the electrical network. Additionally to charging stations for cars and trucks, a solar power installation on 1.5 hectares of nearby land is included. In order for the plant to reach its full economic potential, the flexibility of all the different resources is integrated within Checkwatt’s virtual power plant Currently.
Energy Management
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CheckWatt implements direct frequency control to integrate wind power in energy storage systems
Peter Rosengren 10th May 2022Technology development provides new opportunities to drive the innovation and the the design of wind farms. CNets spin-off company CheckWatt implements direct frequency regulation for wind power and to enable the integration with battery storage and the option capacity to produce hydrogen.
The SVEF (Sveriges Vindkraftkooperativ Ekonomisk Förening – Swedish Windpower Cooperative Economic Association) has designed an installation to be build north of Ulricehamn.
In the first step three wind turbines from Enercon will be connected to the grid frequency through the new support service FCR-D down, which Svenska Kraftnät introduced on 1st January 2022. This service enables the plants to reduce production within a few seconds if the frequency exceeds the Nordic synchronous range of 50.1 Hz. For owners of wind power this option can generate significant revenue as well as it enables the electrical system to directly utilize a more versatile production environment which enables a more stable operation in general.
CheckWatt enables a 100% renewable energy system through measurement, analysis, visualization and control. CheckWatt’s services offer the following components:
- Currently – a virtual power plant built from aggregated resources with CheckWatts EMS that supports the frequency of the electricity network and relieves bottlenecks in local networks.
- IMD – an individual measurement and charging for electricity, water and electric car charging with unique integration to solar power plants and energy storage.
- EnergyInBalance – a Platform with operational monitoring and visualization for resources with CheckWatt EMS and IMD systems. Also integrated in products of cooperation partners.
Checkwatt provides energy management system for grid battery
Peter Rosengren 23rd September 2021CNets subsidiary Checkwatt provides the energy management system (EMS) for a 1MWh battery storage in Varberg. The system handles communication and control of the battery storage on site. This Container sized unit is the first step of a larger battery warehouse that is planned to be operational by 2023. CheckWatt’s cooperation partner Solkompaniet delivers and installs the main battery. A platform from Ntricity handles trades with Svenska Kraftnät.
Varberg Energi wants to develop and offer new services to customers. The battery warehouse is an investment to complement the existing energy system to strengthen the power balance and grid stability in general and to make the energy system more flexible and sustainable.
