C-10 Licensed · DBE & WBE Certified · Nationwide Capability
BESS Operations &
Electrical Services
24/7 on-site operations, component-level repair, and complete facility management for utility-scale battery energy storage systems — delivered by a team with 50+ years of collective field experience.
24/7
Emergency Response
C-10
Licensed Contractor
500kV
Max Voltage
Core Service
01 — Battery Energy Storage Systems (BESS)
Operations & Maintenance
Comprehensive O&M services for utility-scale BESS — from 24/7 on-site operations to component-level repair. We keep your assets performing at peak efficiency and availability.
Operations Services
- 24/7 on-site operations and monitoring
- Remote monitoring via EMS/SCADA systems
- Preventive maintenance programs
- Emergency response services
- Performance optimization and reporting
- Long-term service agreements
Component Repair & Replacement
- Battery module replacement and repair
- BMS diagnostics using OEM software
- Battery string control switchgear replacement
- Fuse, contactor, and BCU repair services
- BMS firmware upgrades and parameter adjustments
- Cell-level troubleshooting with oscilloscope analysis
Testing & Commissioning
- System installation and commissioning support
- Integration testing and validation
- Battery module charging and discharging
- Root cause analysis and corrective action
Facility Support: Clean room environment for sensitive equipment repair, warehouse storage for components, and coordinated parts procurement.
Field-Proven on the
Platforms That Matter
Our technicians are trained on multiple inverter and PCS platforms across the major BESS manufacturers. Component-level repair capability means faster resolution and lower replacement costs for your assets.
Additional Service Lines
Full-spectrum support from engineering solutions through electrical construction and complete site management.
02
Operational Engineering Solutions
Engineered solutions for operational energy storage and electrical systems. We coordinate with licensed professional engineers to deliver compliant designs while providing hands-on implementation and project management.
- Engineered solutions for operational systems
- Turnkey project management with third-party engineering
- System upgrades and modifications
- Owner's representative services
- Construction management and oversight
- Regulatory compliance support and documentation
We bridge the gap between engineering design and field execution — ensuring solutions are practical, safe, and optimized for operations.
03
Electrical Infrastructure & Construction
Licensed C-10 electrical contractor providing installation, maintenance, and repair services from low voltage through high voltage systems — supporting BESS sites, substations, and renewable energy facilities.
- Low voltage to high voltage electrical maintenance
- Breaker and switchboard maintenance
- Cable installation and repair
- Balance of plant electrical systems
- Grounding and safety measure installations
- Light construction and installation services
Decades of transmission experience — including 500kV projects — inform our approach at every voltage level.
04
Site Management & Infrastructure Services
Complete facility management for energy storage and renewable energy sites — from HVAC maintenance to cybersecurity compliance. We handle the operational details so you can focus on energy market performance.
- HVAC and building ventilation systems
- Fire suppression and smoke detection
- SCADA maintenance and troubleshooting
- NERC CIP cybersecurity management
- Vendor coordination and management
- Site inspections and SWPPP compliance
Why The REMS Group
Direct Access
You work directly with leadership — no layers, no delays.
BESS-Focused
We specialize in battery energy storage. It's not a line item — it's our entire practice.
Field-Proven
50+ years of combined experience on major transmission and BESS projects.
Nationwide Capable
Headquartered in Vista, CA with project capability across the United States.
Looking for BESS Operations
& Maintenance Support?
Whether you need 24/7 on-site operations, emergency response, or component-level repair, The REMS Group brings specialized expertise to keep your energy storage assets performing reliably.