TransnetBW to collect solar data amid battery storage boom

Share on facebook
Share on twitter
Share on linkedin
Share on reddit
Share on email
As home consumption has grown in popularity, feed-in rates have declined (Image: Conergy)

German grid operator TransnetBW has partnered with solar inverter supplier SMA to gather data that will ease potential issues with energy distribution in Baden-Württemberg, Germany.

The collaboration will help TransnetBW alleviate issues that can arise amid Germany’s booming home energy storage market.

As more battery storage systems are adopted and the renewable energy market gradually becomes decentralised, grid operators have less insight over precisely where power should be distributed.

Data analysis and forecasting, therefore has become far more important for “reliable, efficient and cost-effective grid operation”, Jochen Bornemann, executive vice president of SMA’s digital centre, said.

Dr Philipp Guthke, who oversees special prognsosis and optimisation tasks at Transnet, said that roughly 10% of power generated is no longer arriving at the utility grid.

And that figure is likely to grow over the coming years. Recent analysis from trade body SolarPower Europe found that total installed capacity for battery energy storage systems (BESS) reached almost 2GWh by the end of 2019, representing a 57% increase in capacity year-on-year. Germany is Europe’s leading market for residential battery storage by a wide margin, and even in 2020 year-on-year capacity growth is forecast at 9%, higher than previously thought due to the resilience of the market. SolarPower Europe’s analysts expect storage capacity to grow by 14% next year.

With more residential power users storing their own energy, Transnet has less control over the distribution of power across the Baden-Wurttemberg region’s grid.

SMA manages more than 700,000 registered PV and storage systems, and collects real-time data on their power generation, grid feed-in and self-consumption rates. The company has access to generation and consumption data on more than 20,000 PV systems in the Baden-Württemberg region.

“In Germany alone, more than 180,000 PV systems of all sizes send data from low and medium voltage to our Sunny Portal online monitoring portal via SMA inverters,” Bornemann said, adding that the company’s data solutions could be applied to other parts of the country.

The group aggregates measurement data using postcodes in order to prevent individual systems being identified by its software, and is collected in compliance with GDPR, SMA said in a statement.

Guthke added that TransnetBW’s partnership will allow the utility to better assess both “the power currently being generated by PV systems…and the reduced amount of solar power fed into the grid due to self-consumption.”

Read Next

January 19, 2022
Chinese inverter manufacturer Sungrow has launched its new "1+X" central modular inverter with an output of 1.1MW at the World Future Energy Summit in Abu Dhabi.
January 19, 2022
US solar developer 8minute Solar Energy has closed US$400 million in financing from institutional investor EIG to bolster its US solar PV and energy storage pipeline.
January 17, 2022
US independent power producer DESRI is planning to raise up to US$100 million in an initial public offering (IPO) that will see the company listed on the Nasdaq.
January 13, 2022
Solar developer Invenergy has partnered with US-based investment platform Lafayette Square to form a joint venture (JV) that will develop and operate PV plants primarily serving low- to moderate-income (LMI) communities and areas disproportionately affected by the clean energy transition.
January 13, 2022
Proposed net metering (NEM) rules in California that would add a US$8/kW per month grid access fee for residential solar systems have been described as “regressive and out of touch with reality” by a NEM policy expert.
January 12, 2022
German asset manager KGAL Investment Management has acquired a combined 50% stake in renewables developer GP Joule Projects, with the two companies intent on taking advantage of the “immense growth opportunities” of renewables across Europe, and in particular Germany.

Subscribe to Newsletter

Upcoming Events

Upcoming Webinars
January 26, 2022
Free Webinar
Solar Media Events
February 23, 2022
London, UK
Solar Media Events
March 8, 2022
London, UK
Solar Media Events
March 23, 2022
Austin, Texas, USA
Solar Media Events
March 29, 2022
Lisbon, Portugal