Services
Energy Storage Solutions
Battery energy storage systems (BESS) have become a critical part of the electricity system, especially when it comes to the integration of renewable energy, and providing grid stability, among other services. Application possibilities are expanding as competition increases. The value of energy storage is especially relevant when comparing it to alternative investments in the additional infrastructure of distribution system operators (DSOs) and transmission system operators (TSOs).
Enertis Applus+ has been in the global energy storage business since 2018, with an accumulated experience of 100 GWh of installed power.
By combining engineering services for battery materials selection with guidance on manufacturing steps/risks, regulatory impacts, growth strategies, and connections to a network of bankable storage providers and integrators, we assure long-term performance predictability, protect client profits, and lower overall client risk.
As part of our services, with our SIMUBATT+ Enertis software, we provide comprehensive technical and economic feasibility studies of the hybridization of renewable technologies with BESS applications, performing detailed simulations of various possible combinations to support our clients’ decision-making process.
A full range of our BESS services is described below. You can also explore the complete offer by clicking on the following brochure: BESS Services Flyer.
Development
- BESS & Hybridization Technical Note & Training
- Technical-economic Feasibility Analysis with our SIMUBATT + Enertis software:
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- Hybridization of solar PV & wind & BESS technologies for Utility size or C&I (Datacenter, etc.) for international projects
- Standalone BESS
- BESS & Hybridization Conceptual Engineering
- PV+BESS modeling for various Independent System Operator (ISO) markets and use cases
- Site adequacy and capacity verification
- Creation of the initial site layouts to support early permitting efforts
- Interconnection application support
- M&A technical due diligence
- Bankability reports for BESS equipment suppliers
Pre-construction
- BESS & Hybridization Conceptual Engineering
- Fully independent engineering reports for financing
- BESS & Hybridization basic and detailed engineering
- BESS Capacity and Performance Test protocol
- BESS Quality Management Plan (QMP)
- BESS & Hybridization Owner´s engineering:
- Preparation and review of Technical Specifications
- Request For Proposal (RFP) preparation of documents
- BESS technical proposals & Long Term Service Agreement (LTSA) review
- Template of Supplier Agreement contract (SA)
- Technical advisory contracts support
- Detailed engineering review
- Owner’s engineering for all stages of design review prior to mobilization
- Development of 30% design layouts after equipment is finalized to support EPC pricing efforts
- Additional BESS modeling to compare results from development stage
Construction
- Construction monitoring, technical submittal, RFI, and change order
- Review, tracking, and approval
- Contractual milestones verification for either the developer or financial lender
- Quality control inspections of BESS containers at factory and upon on-site arrival
Commisioning
- Review and management of commissioning and documentation between EPC, equipment suppliers, and owner
- Capacity testing and round-trip efficiency test validation
- On-site troubleshooting with BESS supplier, EPC, and owner
Operations
- Technical analysis and troubleshooting for equipment performance trends relative to equipment agreements or Long-Term Service Agreements (LTSAs)
- Periodic performance review and evaluation of augmentation strategy
Highlighted projects

Grenergy Renovables’ Víctor Jara plant
Country: Chile
Capacity: 230 MW of solar PV plus 1.3 GWh of BESS capacity
Service(s): Technical Advisory
Client(s): Grenergy Renovables
Enertis Applus+ has served as an independent technical advisor for Grenergy Renovables’ Víctor Jara plant with 230 MW of solar PV plus 1.3 GWh of BESS capacity, part of the Oasis de Atacama BESS project. Enertis Applus+ provided technical due diligence services, conducting in-depth evaluations of each project’s technical, environmental, and financial factors to ensure compliance with quality codes and standards and to identify potential technical-economic risks.

Eccles and Kilmarnock BESS projects
Country: United Kingdom
Capacity: 1GW/2GWh
Service(s): Technical Advisory
Client(s): Matrix Renewables
Enertis Applus+ supported Matrix Renewables by providing Technical Advisory services for the acquisition of the Eccles and Kilmarnock BESS projects in Scotland, with a combined capacity of 1GW/2GWh. Our scope of work included: Due diligence review covering project design, ground conditions, grid connection offers, permitting and consents, financial models, and the construction contracts prepared by the developer.