New storage interconnection rules yield Italy’s first solar-smoothing plant

September 24, 2015
LinkedIn
Twitter
Reddit
Facebook
Email

Enel Green Power wants to take its experiences of integrating renewables and providing grid services with batteries in its home market of Italy into the international arena in future. Image: Enel Green Power.
Plans by Italy’s grid operator to allow for the interconnection of energy storage to the network have resulted in the country’s first grid-connected solar-smoothing storage facility being inaugurated.

Grid operator Terna has put in place the rules for interconnection which led many energy storage industry observers to keep a close eye on developments in the southern European country’s electricity sector.

Renewable energy developer Enel Green Power yesterday unveiled the 1MW/2MWh storage system yesterday in Catania, Sicily. It connects to an Enel Green Power 10MWp PV plant, with Enel describing the storage element as an “integral part” of the Catania 1 solar project.

The grid-connected storage will smooth out power quality from the PV system and allow its variable generation to be fed into the grid optimally. It will allow for more flexible management of the plant’s output but also, its value to the electricity network will in theory be maximised by it being used to provide grid services.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

The facility has been undergoing testing since May, utilising General Electric’s Durathon batteries, which are molten salt-based (sodium-metal halide). GE and Enel Green Power – a subsidiary of Italian power generation firm Enel – have signed a partnership to investigate the grid integration of renewable energy plants. Part of the scope of the Catania project’s application will be to smooth out the difference between forecasted and actual output of renewable energy generators.

Enel Green Power is also currently constructing a storage project using 2MW/2MWh of Samsumg SDI batteries to be connected with an 18MW wind farm and connected to the high voltage grid. The company said it is keen to take its learnings from storage in Italy to other markets, namechecking Romania, Spain, Chile, Mexico, Peru, North America, South Africa and Kenya all as potential countries of interest.

Read Next

February 12, 2026
Two BESS projects in Yuma County, Arizona, one from BrightNight, and one from Leeward Renewable Energy, have reached significant milestones.
February 12, 2026
A US$30 billion infrastructure giant has just backed a partnership to bring 3.5GW of solar and energy storage to North America.
February 11, 2026
Energy storage developer NineDot Energy closes US$431 million in construction financing for New York BESS projects. Meanwhile, US energy efficiency and renewables company Ameresco completes multiple tax credit transfer and financing transactions for solar PV and BESS.
February 9, 2026
Software-focused battery energy storage system (BESS) integrator FlexGen has put two utility-scale BESS projects in operation in Wisconsin and Iowa, US, totalling 700MWh.
February 9, 2026
Chinese battery manufacturer EVE Energy has secured a contract with the Malaysian government to deploy an AC/DC integrated 36MWh solar-plus-storage system at Kuala Lumpur International Airport (KLIA).