Energy storage
Utility Scale y C&I
BESS Utility Scale
With two decades of experience leading renewable energy projects, Ansasol is taking a natural step toward the future with its new line of business in BESS systems.
At Ansasol, we transform market volatility into profitability. We develop large stand-alone or hybrid battery parks that enable price arbitrage (charging during off-peak hours, discharging during peak hours) and participation in grid balancing services.
- Comprehensive management: from environmental permitting to Ready to Build.
- CAPEX optimization through strategic alliances with Tier-1 manufacturers.
+ than 1,800 MWp
of photovoltaic power
+ than 1,400 MW
electrolysis power
BESS Utility Scale
With two decades of experience leading renewable energy projects, Ansasol is taking a natural step toward the future with its new line of business in BESS systems.
At Ansasol, we transform market volatility into profitability. We develop large stand-alone or hybrid battery parks that enable price arbitrage (charging during off-peak hours, discharging during peak hours) and participation in grid balancing services.
- Comprehensive management: from environmental permitting to Ready to Build.
- CAPEX optimization through strategic alliances with Tier-1 manufacturers.
+ than 1,800 MWp
photovoltaic power
+ than 1,400 MW
electrolysis power
at present
More than 20 projects
at different stages of development
OPTIMIZATION of energy sales.
Optimization of energy sales. Charge Cheaply, Sell Expensively. The Energy Arbitrage strategy is based on hourly price management. The battery charges with its own surplus or during off-peak hours, and strategically discharges during price peaks, turning your energy management into a new revenue stream.
Participation in ADDITIONAL SERVICES
Participation in additional services. Storage systems open up the possibility of participating in secondary markets, such as frequency adjustment and capacity reserve markets, allowing for additional revenue streams.
REDUCTION in penalties and operating costs
Reduction of penalties and operating costs. Eliminate penalties and reduce fixed terms. Our BESS system performs intelligent peak shaving, discharging instantly (fast response time) to “shave” demand peaks. This eliminates penalties for exceeding maximum meters and allows you to optimize and structurally reduce your long-term contracted power.
Higher return
Ansasol brings expertise in solar energy and BESS systems, offering efficient solutions that drive the transition to a more sustainable energy model.
The integration of battery hybridization systems into large-scale renewable energy projects can significantly improve their economic profitability.
Hybridization not only prevents curtailment (forced shutdowns), but also enables new revenue streams. Our financial model projects conservative and optimistic scenarios based on the future volatility of the electricity pool.
request a study
Clicking on “Request feasibility study” does not
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*Estimación conservadora: Rentabilidad superior incluso asumiendo una caída del 70% en los precios de mercados secundarios futuros.
request a quote
Clicking on “Request a quote” does not
entail any kind of commitment
or obligation to contract.
BESS
BESS FOR I&C
Uninterrupted and efficient power for your industry and commerce.
Improve your competitiveness, protect your critical production and drastically reduce your power term. Our BESS systems for industry act as an energy shield, managing peak demand (Peak Shaving) and guaranteeing wave quality.
The adoption of BESS is one of the best options for achieving sustainable development, environmental, social and governance objectives.
Peak Power Management
This strategy allows for a drastic reduction in fixed electricity costs by “cutting” demand peaks. The BESS system instantly injects stored energy when the plant’s consumption exceeds a pre-set threshold, preventing the grid from supplying that excess. This allows the industry to reduce its contracted power, eliminate penalties for excess power (maximum meter), and optimize the existing electrical infrastructure without costly connection upgrades.
Load Shifting and Arbitrage
Maximize the profitability of renewable generation and take advantage of electricity market volatility. It consists of storing energy at times of low cost (or surplus solar production that would otherwise be lost) to discharge and consume it—or sell it to the grid—at times when electricity is more expensive (Time-of-Use). For utility-scale plants, this transforms an intermittent photovoltaic installation into a manageable and more valuable energy source.
Energy Backup and Power Quality
Beyond savings, storage ensures operational continuity and network stability. In “island” or backup mode, the system acts as a giant UPS (Uninterruptible Power Supply), protecting critical industrial processes from power outages. It also improves power quality by regulating frequency and controlling voltage, filtering out micro-cuts and fluctuations that damage sensitive machinery, and enabling the provision of adjustment services to the system operator.
Full BESS cycle
Development and monetization of storage assets
We support your BESS project from technical feasibility to maximizing revenue in the electricity market. As EPC specialists, we integrate engineering, construction, and operation, relying on leading partners for asset management.
Ansasol ensures that your project benefits from the latest legislative measures that reduce development risk and protect remuneration.
Feasibility and bankability
We ensure the profitability of your BESS use case (Stand Alone or Hybridization). We carry out high-quality backtesting studies and manage the entire process with the TSO and regulatory bodies, defining the ideal framework to make your project bankable from day one.
Funding and ecosystem
We facilitate the financial success of the project thanks to our integrated ecosystem. We introduce financial players (banks and investors) and design customized revenue models (Merchant, Tolling, or Hybrid) with terms and conditions validated by the market.
Optimisation
Ansasol offers specialized optimization services for BESS systems, ensuring that each installation achieves maximum performance. Through intelligent charge and discharge management, continuous data analysis, and adaptation to operating conditions, Anasol ensures greater efficiency, service life, and profitability of energy storage.
Permitting
Management of specific permits and licenses for the installation of the battery system (access and connection modifications, AAU/DIAs, building permits, etc.).
Liaison with distribution companies and agencies to update connection permits.
Regulatory adaptation: ensuring compliance with current technical and environmental requirements for storage integration.
Full BESS cycle
Development and monetization of storage assets
We support your BESS project from technical feasibility to maximizing revenue in the electricity market. As EPC specialists, we integrate engineering, construction, and operation, relying on leading partners for asset management.
Ansasol ensures that your project benefits from the latest legislative measures that reduce development risk and protect remuneration.
Feasibility and bankability
We ensure the profitability of your BESS use case (Stand Alone or Hybridization). We perform high-quality backtesting studies and manage the entire process with the TSO and regulatory bodies, defining the ideal framework to make your project bankable from day one.
Funding and ecosystem
We facilitate the financial success of the project thanks to our integrated ecosystem. We introduce financial players (banks and investors) and design customized revenue models (Merchant, Tolling, or Hybrid) with terms and conditions validated by the market.
Optimization
Anasol offers specialized optimization services for BESS systems, ensuring that each installation achieves maximum performance. Through intelligent charge and discharge management, continuous data analysis, and adaptation to operating conditions, Anasol ensures greater efficiency, service life, and profitability of energy storage.
Permitting
Management of specific permits and licenses for the installation of the battery system (access and connection modifications, AAU/DIAs, building permits, etc.).
Liaison with distribution companies and agencies to update connection permits.
Regulatory adaptation: ensuring compliance with current technical and environmental requirements for storage integration.
batteries
At Ansasol, we work with leading suppliers of BESS storage batteries.
At Ansasol, we are committed to technological excellence in every project. That is why we work exclusively with leading suppliers of BESS energy storage systems, recognized for their innovation, reliability, safety, and energy density, complying with the highest international standards.
- We are committed to Lithium Iron Phosphate (LFP) cells from Tier-1 manufacturers, the safest and most stable chemistry on the market for stationary applications.
- Safety: Minimized risk of thermal runaway.
- Lifespan: Up to 6,000 – 8,000 life cycles with low degradation.
- Modularity: Scalable systems from 100 kWh to MWh in containers.
Partner 360º
Your trusted EPC partner: A single point of contact. We connect the BESS system, minimising or eliminating downtime in your production chain.
From Variable Generation to Dispatchable Supply. For large-scale industry, batteries convert intermittent solar energy into a reliable and programmable source of power, which is crucial for sustaining production processes and ensuring operational continuity.
This not only optimises the performance of renewable energy plants, but also reduces the need for new energy infrastructure.
In addition, batteries help stabilise the grid, improving its responsiveness to variations in generation and consumption.
Our partnerships
Supply, installation, and commissioning
Turnkey execution with our own equipment, including connection point management and industrial legalisation (Law 4/2025).
Batteries.
- High-quality equipment from Tier 1 manufacturers (guaranteed bankability and long-term support). **Agnostic Design** solution to optimise LFP and PCS hardware according to specific project requirements. Systems with chemistries between 0.25 C and 1C and advanced fire suppression systems.
- Representative manufacturers: CATL, BYD, Trina, Huawei, Beeplanet….
Power Conversion System (PCS)
- State-of-the-art power electronics for DC and AC solutions.
- Air- or liquid-coupled solutions, in both high-efficiency DC/DC and DC/AC configurations.
- Key suppliers: SMA, Huawei, Ingeteam, Power Electronics…
Software
- Integrated control systems for batteries and PCS, including plant controllers, EMS (Energy Management System) and SCADA platforms.
- They enable intelligent, flexible and optimised plant operation.
Certifications and guarantees
- All equipment is CE marked and complies with the Technical Supervision Standard (NTS) for compliance with the Spanish Grid Code and technical safety regulations for fire prevention.
- Full guarantees: Inclusion of product, performance, availability and preventive maintenance guarantees.
Integration and commissioning
- Complete physical and electrical design and installation of systems.
- FAT/SAT testing, operational configuration, parameter validation and operator training.
- Comprehensive project management: technical and logistical management, visits by Project Manager and Site Manager.
EPC engineering and design
We design customised systems (industrial or utility scale) taking into account equipment warranties and degradation restrictions. We configure the BESS to meet the most demanding technical requirements, ensuring seamless integration with existing photovoltaic plants or new infrastructure.
Technical analysis of the existing plant to assess its compatibility and optimal sizing of the battery system, evaluating modularity and scalability.
Detailed engineering: definition of electrical diagrams, configuration of the storage system and its integration into the current installation.
Operational optimisation: design of charging/discharging strategies to maximise economic benefits and improve plant efficiency.
Study of load profiles and selection of the optimal battery chemistry.
BESS Stand Alone
We design autonomous BESS
Systems that allow electrical energy generated from renewable sources, such as solar or wind, to be stored for later use. These systems are designed to operate independently, i.e., without the need to be connected to the electrical grid, which gives them greater flexibility and autonomy.
Off-Grid Batteries
Ideal for remote installations without dependence on the electrical grid
O&M y EMS
- 24/7 monitoring of battery system performance and its integration with the solar plant.
- Preventive and corrective maintenance specific to storage systems.
- Continuous optimization through data analysis to maximize revenue and extend equipment life.
regulatory framework and legislation
Details of the key regulations that enable and regulate hybridization and storage in Spain, with special attention to the updates approved in 2025 that decisively boost the sector.
The development of storage and hybridization projects in Spain is governed by a solid regulatory framework (RDL 23/2020 and RD 1183/2020) that has been significantly reinforced in 2025 to ensure the stability of the system and the profitability of investments.
- Real Decreto 917/2025 (RECORE y Prelación): Ver en BOE
- Real Decreto-ley 7/2025 (Medidas Urgentes): Ver en BOE
- Real Decreto 997/2025 (Estabilidad y Almacenamiento): Ver en BOE
- RDL 23/2020 (Marco General Energía): Ver en BOE
- RD 1183/2020 (Acceso y Conexión): Ver en BOE
- RD 164/2025 (Seguridad contras incendios y SRAD): Ver en BOE
regulatory framework and legislation
Details of the key regulations that enable and regulate hybridization and storage in Spain, with special attention to the updates approved in 2025 that decisively boost the sector.
The development of storage and hybridization projects in Spain is governed by a solid regulatory framework (RDL 23/2020 and RD 1183/2020) that has been significantly reinforced in 2025 to ensure the stability of the system and the profitability of investments.
- Real Decreto 917/2025 (RECORE y Prelación): Ver en BOE
- Real Decreto-ley 7/2025 (Medidas Urgentes): Ver en BOE
- Real Decreto 997/2025 (Estabilidad y Almacenamiento): Ver en BOE
- RDL 23/2020 (Marco General Energía): Ver en BOE
- RD 1183/2020 (Acceso y Conexión): Ver en BOE
- RD 164/2025 (Seguridad contras incendios y SRAD): Ver en BOE
