Six Areas. One Partner. One Point of Responsibility.
A BESS is an investment designed to operate for 15+ years — and its success depends on far more than the equipment itself. It depends on proper system sizing, quality installation, financing, contracts, and long-term maintenance.
AESYS brings all six areas together in-house, giving you one partner and one point of contact throughout the entire project lifecycle.
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24/7 monitoring and remote support
Continuous monitoring of system status for early detection and rapid resolution of potential issues.
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Flexible maintenance contracts
Maintenance contracts tailored to the specific needs and requirements of the project.
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Technical user training
Remote technical training, with the option to arrange on-site training for your teams.
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Local service and support
As a local partner, we ensure a fast response and expert support directly at your location.
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EMS system integration and optimization
Support in connecting the system with existing systems for optimal operation and efficiency.
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Technical and financial consulting
Expert support in analysis, optimization, and improvement in line with the specific requirements of the project.
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Software updates and maintenance
Regular updates and maintenance for optimal system performance, security, and reliability.
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Warranty and security
Reliable solutions, technology, and support that ensure safe and stable system operation.
A complete solution from the First Analysis to Years of Reliable Operation
An energy project doesn’t end with equipment delivery.
That’s why we bring together six critical areas that determine the success of your investment: BESS supply, installation, maintenance, financing support, legal and banking advisory, and energy law.
One partner. One point of responsibility. From start to long-term operation.
- I BESS solutions sales
- II Installation and commissioning
- III Operations and maintenance (O&M)
- IV Legal and banking consulting
- V Energy law
- VI Project financing
BESS Systems
The Right System Starts with the Right Analysis — Not a Product Catalogue.
Every solution is sized around your actual energy consumption profile, including 15-minute load data, tariff structure, and project objectives.
The result is a configuration designed to deliver a return on investment — not simply the largest system we can sell.
Direct Supply Channel - Equipment sourced directly from the manufacturer, with full technical documentation and manufacturer support.
Warranty Protection - The manufacturer’s standard warranty and battery performance warranty are contractually transferred to your project on a back-to-back basis.
Transparent Proposals - System specifications, delivery timelines, and commercial terms — all provided in writing before you sign.
From the Foundation to the first kWh.
Installation is led by our engineering team, backed by licensed professionals with experience in MW-scale projects and decades of expertise in the power sector.
We take care of the entire process — you don’t have to coordinate multiple contractors.
Electrical Design & Site Preparation - Engineering documentation, foundations, cable routes, electrical protection, and site preparation.
Grid Connection - Coordination with the distribution system operator, including measurements, testing, and required approvals.
Testing & Commissioning - On-site functional testing before handover, carried out in accordance with the manufacturer’s procedures.
Training - Training for your technical staff covering day-to-day system operation and safety procedures.
A System Monitored 24/7.
Our annual service agreements cover remote monitoring, preventive and corrective maintenance, and warranty support. As a local team, we can respond quickly on-site — without waiting for an overseas service team.
24/7 Monitoring & Remote Support - Continuous monitoring of system parameters for early detection and rapid resolution of deviations.
Flexible Maintenance Contracts - Service packages tailored to system size and project requirements, with contractually defined response times.
Preventive Maintenance - Scheduled inspections in accordance with the manufacturer’s maintenance plan, covering battery modules, cooling systems, fire protection equipment, and electrical cabinets.
Local Service - On-site interventions across Serbia and the wider region.
EMS Integration & Optimization - Adjusting operating strategies — including peak shaving, energy arbitrage, and backup — as tariffs, consumption patterns, and project requirements evolve.
Software Updates - Regular control software updates to maintain system performance, security, and reliability.
Technical User Training - Remote training with on-site training available for your technical teams.
Warranty Support - We manage the complete warranty process with the manufacturer on your behalf — one point of contact for everything.
Your Investment Doesn’t Have to Wait for the Budget.
BESS projects can be financed through multiple routes — from battery leasing and bank loans to green financing programs. We understand the process and what financial institutions require: we help prepare the documentation, structure repayment around projected savings, and guide you through the process from start to finish.
Battery Leasing & Savings-Based Payment Models
Bank Loans & Green Financing Programs
International Payment Instruments (Structuring payments through instruments such as letters of credit and bank guarantees)
Documentation That Makes a Project Bankable.
Banks don’t finance ideas — they finance well-documented projects. We prepare business plans and financial models in the format expected by credit committees and represent your project in communication with financing partners.
Bankable Business Plans - Project financial models with projected energy savings, cash flows, and return on investment.
Loan & Financing Documentation - Preparation and management of the complete financing application for banks or investment funds.
International Commercial Agreements - Negotiation and monitoring of equipment supply agreements — from purchase order to delivery.
Payment Instruments - Structuring transactions through letters of credit, bank guarantees, and other international payment instruments, ensuring funds are released only when agreed conditions are met.
Permits, Contracts & Regulatory Compliance.
Energy projects operate within a complex regulatory framework. Our in-house legal team specialising in energy law guides each project through the required permits, approvals, and contracts — with closer coordination between the legal and technical sides of the project.
Permits & Approvals Managing procedures with relevant regulatory authorities and system operators.
Project Agreements Drafting, reviewing, and negotiating EPC, O&M, and PPA agreements.
Regulatory Compliance Ensuring compliance with safety and technical regulations, grid operator requirements, and data protection obligations.
Legal Representation Managing communication with regulators and public authorities on behalf of the project.
How We Deliver Your BESS Project.
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1
Inquiry & Energy Analysis
Share the basic project data and receive a written energy analysis within 5 business days. Free of charge.
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2
System & ROI Proposal
We recommend the right system configuration, estimate potential savings, and provide an indicative payback period.
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3
Financing Structure
We help structure the financing model and prepare the required documentation, if needed.
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4
Contract & Procurement
One contractual partner for equipment, delivery timelines, and warranty coverage.
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5
Installation & Commissioning
Engineering, installation, grid connection, testing, and technical training.
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6
O&M & Monitoring
24/7 remote monitoring and a service agreement covering the entire operating life of the system.
Talk to our team.
Submit an inquiry via the form
Provide basic information about the project, and our team will contact you with a proposed solution.
Response within 24 hours
Once we receive your inquiry, you will get feedback and the next steps for realizing the project.
Send a message
Our team will pick up your inquiry and respond within 24h.