The NTVV project has installed and connected 25 ESMUs as per the criteria defined in SDRC 9.4c.

The installation of these devices will help Scottish and Southern Energy Power Distribution (SSEPD) and all other GB DNOs understand the benefits to network operation and capacity that these units may bring and also quantify the cost benefit analysis, installation cost, data needs and method of analysis.

The ESMUs are formed of a combination of energy storage in the form of lithium ion batteries and a power inverter that controls the interface with the network, including management of power quality issues. These units have been designed to allow existing Low Voltage (LV) networks to respond more flexibly to the anticipated changes in energy usage behaviour based on the uptake of low carbon technologies in the domestic sector. The New Thames Valley Vision looks to support changes in our customers’ energy usage behaviour as they take up low carbon technology.

These units are being trialled on SSEPD’s LV network to ascertain whether this form of energy storage and management represent a cost effective way of managing capacity and voltage regulation, harmonic distortion, balance and flicker.

This report provides the evidence that the units are installed in readiness for the next phase of the project, which is to begin the trials to test the hypothesis defined:

“Economic and flexible support for LV networks will be provided by power electronics with energy storage running smart control algorithms which make use of forecasted demand to provide a coordinated response to address the technical standards of voltage and thermal performance in the most efficient manner possible.”