The newly opened Pikkori solar park situated in Kilingi-Nõmme, Southern Estonia, comes equipped with a 2 MWh storage battery capable of meeting the electricity needs of all 1500 residents for over an hour.
Pikkori is the largest energy storage solar park in Estonia, featuring a 2 MWh Huawei battery at its core. The solar park strategically positions its solar panels to face both east and west, meaning electricity is generated over a longer period of time compared to south-facing parks. In the future, Sunly plans to add energy storage to other power plants in Estonia, the Baltics and Poland.
Priit Lepasepp, founder and CEO of Sunly explained that developing energy storage for solar and wind parks is a crucial direction for Sunly today. "The unique approach of this project optimizes the use of solar energy. The integrated battery energy storage system significantly increases the availability of electricity, providing power to the grid even when the sun is not shining," emphasized Lepasepp.
Alar Heikla, Deputy Country Manager at Huawei Technologies Estonia stated that Huawei is honored to be given this opportunity to continue working together with Sunly to build innovative solutions for projects like Pikkori which uses Huawei''s energy storage FusionSolar 2MWh ESS Big Energy Storage product. "With the renewal and expansion of our cooperation, we hope to develop meaningful and world-class solutions to reduce carbon footprints and to provide advanced technologies as part of our commitment to the sustainability agenda," said Heikla.
The solar park is built on marshy ground that would otherwise be challenging to find a use for, contributing to land reclamation within the community. The solar park was constructed considering the needs and values of the community by Sunly and Metsagrupp''s joint venture, Metsapäike 2 LLC.
TALLINN, Estonia, April 04, 2024 (GLOBE NEWSWIRE) -- The Estonian Ministry of Climate signs the Memorandum of Understanding (MoU) with energy company Zero Terrain to help Estonia achieve its 100% renewable energy goal by 2030. With this cooperation, Zero Terrain is collaborating closely with the government to devise solutions to enable the realisation of the pumped-hydro energy storage (PHS) project in Estonia, including supporting securing capital and addressing market challenges.
Additionally, Zero Terrain receives a grant of €1.98M from the state''s applied research programme to support Zero Terrain project development in Estonia and technology export.
The Zero Terrain Paldiski 500MW underground long-duration energy storage plant is a significant advancement of the conventional PHS technology, making it possible to build anywhere, even on flat land.
Zero Terrain Paldiski represents a notable milestone in the country''s energy system. Paldiski Pumped Hydro Energy Storage plant is an EU Project of Common Interest (PCI project). It is the only greenfield pumped hydro energy storage project in the Northern Baltic region and will also be the largest facility in the country.
"Signing the MoU is a significant step forward in Zero Terrain''s journey towards a clean and secure energy future. We believe there can''t be a renewable energy-driven energy system without large-scale, long-duration energy storage. This collaboration signifies the cooperation and a commitment to driving positive change in the Estonian renewable energy landscape," says Peep Siitam, the Founder and CEO of Zero Terrain.
Estonia´s first long-duration energy storage project, Zero Terrain Paldiski, obtained the main building permits in December 2022. Construction of the country''s first pumped-hydro storage plant will begin in 2025. During the nominal operating cycle of 12 hours, Zero Terrain Paldiski generates 6GWh of power to the grid, which is somewhat more than the average daily consumption of all Estonian households.
Zero Terrain also receives a grant of 1.98M€ from the state''s applied research programme. According to Siitam, the grant will be used to develop Zero Terrain modular design, start development activities in other countries, and involve new investors in Zero Terrain Paldiski, Estonia.
"Zero Terrain is developing large-scale energy storage technology, enabling Estonia and other countries to switch to renewable energy more widely with such significant advancement of the conventional PHS technology," says Arbo Reino, an energy expert of the Estonian Business and Innovation Agency.
"The global need for long-duration energy storage (LDES) capacity is undeniable. 85–120 TWh-hours of LDES is needed globally by 2040 (McKinsey, 2021), so the interest in our technology and project is high, especially in regions where the traditional PHS was impossible to implement due to geographical limitation," explains Siitam.
Zero Terrain is jointly owned by the Estonian energy company AS Alexela, Baltic-Polish renewable energy company Sunly AS, Vool OÜ, Combiwood Grupp OÜ, Warmeston OÜ, and Ronnivara OÜ.
Eesti Energia will build its first large-scale storage device at the Auvere industrial complex later this year. The goal is to balance the fluctuations in electricity prices caused by the growth in renewable energy production as well as to support the stability of the electrical system.
According to a press release, the investment in battery storage will help Eesti Energia increase the use of electricity produced from renewable energy sources, while also ensuring more stable prices for end consumers. The storage facility will be operational by the beginning of 2025, at the same time as the Baltic countries are disconnected from the Russian electricity grid.
The international procurement organized by the energy company was won by the joint tender of Diotech OÜ and Solar Wheel OÜ, with LG Energy Solution supplying the battery technology. The capacity of the new storage device will be 26.5 megawatt hours (MWh) and 53.1 MWh. This is a pilot project to ensure the solution is suitable both in Estonia and the company''s other retail markets.
According to Eesti Energia management board member Kristjan Kuhi, the key to a fast and affordable green transition that ensures self-sufficiency in energy is electrification based on renewable energy, in which energy storage plays a major part.
"The quickest way to ensure affordable electricity for consumers and the independence of the Estonian energy system is to switch to renewable energy as soon as possible," Kuhi said.
"Since the wind doesn''t blow and the sun doesn''t shine all the time, energy needs to be stored. One solution for storing renewable energy is using large-scale energy storage devices. With such solutions we could prevent the extremely high electricity prices as we experienced recently. Sufficient storage capacity helps ensure affordable electricity prices, the reliability of the energy system and a more efficient use of renewable energy."
The storage device''s location in the Auvere industrial complex will increase its competitiveness, enable more efficient energy production and increase the use of renewable energy in the complex.
"We are honored to contribute to Eesti Energia''s energy plan for desynchronization in the Baltic countries," said Kyuwon Heo, head of Grid ESS Europe at LG Energy Solution. "Our cutting-edge technology and collaborative approach will pave the way for a sustainable energy environment in Estonia, fostering innovation and resilience in the face of energy challenges."
The capacity of the new system corresponds to 2 hours of consumption for approximately 75, 000 households. A large-scale storage device enables Eesti Energia to participate in power exchange as well as other electricity markets to ensure the security of electricity supply. It would also fully cover the FCR frequency reserve need in the Baltics.
According to Diotech OÜ management board member Mart Moora, the company''s mission is to accelerate society''s transition to carbon-neutral electricity production and consumption.
"To serve our mission, we have deliberately developed over several years the ability to design and build battery technologies, as they are key in making renewable energy production controllable," said Moora.
"We are honored to bring LG Energy Solution''s state-of-the-art storage systems to the Estonian market and to cooperate with Eesti Energia in this pilot project. We will do our best to ensure that the system we are building performs as expected and that the pilot project meets everyone''s expectations."
Eesti Energia announced a procurement for the supplier of the large-scale storage device in summer 2023. The device is expected to be operational in the first quarter of 2025.
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