DAS and SCADA Solutions

Stem’s Data Acquisition System (DAS) and Supervisory Controls and Data Acquisition (SCADA) systems for solar and energy storage assets are preconfigured to your specifications for fast, plug-and-play installation.

Solar and Energy Storage Solutions

Stem’s monitoring and control platform, PowerTrack™, is powered by data collected on site through edge hardware or software ingests. PowerTrack Software works with any equipment. If you can deploy it, we’ll monitor it. With 8,000+ drivers and point maps, our technology-independent platform ensures universal compatibility across manufacturers and asset types. We provide standard and custom configurations to suit projects of any size, from small commercial installations to utility-scale deployments.

DAS Assembly

Complete, preconfigured monitoring solutions ready for rapid deployment:

Complete with all necessary DAS system hardware
Preconfigured for plug-and-play capability with PowerTrack Software
Hardware mounted and pre-wired
NEMA 4/4X rated enclosures for exterior mounting
Indoor mounting hardware included
Built to your specifications
UL 508A Listed

Quality Assurance: End-to-end DAS solutions from Stem are tested, configured, assembled, and wired in our ISO 9001 certified facility in Longmont, CO.

System Configurations

Your project requirements drive your hardware solution. Whether you need a simple all-in-one kit or a sophisticated custom SCADA system, Stem delivers the right combination of performance, flexibility, and value.

Simplified Solution

PLCS400

Your site is small and simple, so your DAS solution should be easy.

All-in-one DAS kits provide simple, cost-effective monitoring for smaller distributed generation projects. Preconfigured and compatible with a wide range of inverters, PLCS400 systems deliver essential monitoring capabilities without custom engineering overhead.

Limited to systems with 400A or less per phase at peak output
Includes revenue-grade meter and basic weather sensors capable of supporting expected energy modeling in PowerTrack
Cellular modem and data plan included
Data uploads to PowerTrack at reduced frequency
Data stored as 15-minute average values
5-year monitoring term

Commercial-Scale

PLCS600

Eliminate the custom hardware quoting process with the PLCS600.

Designed for rooftop and carport systems, the PLCS600 includes a revenue-grade meter and several weather station options to fit a variety of preferences.

System size: 325kW-1MW AC
Single metering point
No restriction to maximum metered current
Data upload frequency same as custom hardware solutions
Weather station options available
Agency reporting available
5-year monitoring term

Bespoke Engineering

Custom DAS

Your site is unique, so your DAS or SCADA solution should be as well.

Provide our team with your site documentation and design parameters, and we’ll engineer a custom hardware solution designed exclusively for your system. Ensure you get all the data you want without purchasing extraneous hardware you don’t need.

System size: 325kW+ AC
Flexible data logger options
Advanced controls capable (SCADA, PPC, plant control)
Comprehensive weather monitoring options
Backup power solutions
Custom PowerTrack dashboards available
Full commissioning support

Hardware Components

Enclosures

Stem offers a range of NEMA 4/4X rated enclosures designed for both indoor and outdoor installations. All enclosures come with standard screwdriver lock with options to add key or padlock kits. Other options include vented models for UPS configurations and stainless steel or plastic material options. Custom server racks for indoor rooms or climate-controlled towers are also available. We offer a variety of size options for enclosures. Our team will work with you to select the optimal enclosure for the system.

Note: Enclosure sizing and specifications determined during project quoting.

Data Loggers

Data loggers serve as the intelligent gateway between site equipment and PowerTrack Software. Stem offers a range of hardware options to optimize function and cost while supporting diverse data collection strategies.

PowerTrack Logger

The PowerTrack Logger is a next-generation gateway device engineered for commercial and industrial (C&I) to utility-scale installations. This solution greatly increases datalogging capabilities while serving as a backwards compatible drop-in replacement for the PowerLogger 1000. The compact datalogger delivers better performance, futureproof local AI processing, and plug-and-play configuration methodology.

PowerLogger 1000

Our base, compact gateway is complete with a touchscreen and numerous on-site troubleshooting features to empower technicians to commission and troubleshoot communications without complicated software tools. Remote troubleshooting capabilities enable our support team to diagnose and resolve issues without site visits in most cases.

PowerManager 2200

Upgrade to PowerManager 2200 to support more devices, implement limited export control, add high-frequency data logging, and access advanced control capabilities.

Selection criteria: Data logger selection based on device count, control requirements, and project specifications.

Energy Meters

Revenue-grade metering solutions for low and medium voltage applications. All meters include LCD displays and support standard communication protocols.

Metering Features:

Revenue-grade energy measurement for financial settlement
Power quality monitoring and analysis
Dual communications for storage site redundancy
Support for various current transformer (CT) configurations (5A, Rogowski, milli volt)
Agency reporting

Available Meter Options:

Elkor

Acuvim

SEL

Important note: CTs not provided for systems over 600V. Customer must supply metering class potential transformers (PTs) if metering above maximum voltage specification.

Selection criteria: Meter selection based on voltage requirements, CT configuration, and communication needs.

Weather Stations

Stem offers comprehensive weather monitoring solutions ranging from entry-level packages to fully customized sensor arrays. Choose pre-configured packages for fast deployment or work with our team to design a custom configuration matching your exact project requirements. Virtual weather linking is available to pull data from nearby sites when physical sensors aren’t practical.

Weather Station Features:

Expected energy modeling in PowerTrack
Performance ratio calculations
Soiling loss detection
Accurate availability reporting
Real-time irradiance correlation
Optional satellite/virtual irradiance

Measured Parameters

Irradiance Sensors

Temperature Sensors

Meteorological Sensors

Vendor Options

Package Tiers

Standard Package

Full Package

Custom Configuration
Match exact project specifications with upgraded sensor accuracy, multiple measurement orientations, atmospheric sensors, and module soiling detection. We work with industry-leading vendors to source the right equipment.

* Class C pyranometers can be replaced by another pyranometer if preferred

Selection criteria: Weather station selection based on accuracy requirements, performance guarantee needs, and site accessibility.

Power Supply & Backup

Reliable power solutions with optional UPS backup for continuous operation during outages. What Backup Power Enables:

Continuous data collection during grid outages
No data gaps in historical records
Sustained communications and control capabilities
Protection of expensive networking equipment

Standard Power Supply

UPS Systems

Note: UPS sizing based on total system power draw and required backup duration. Longer backup durations may require expanded enclosures or separate battery cabinets.

Networking & Communications

Robust connectivity solutions including cellular modems, network switches, and fiber optic infrastructure for reliable site communications.

Network Options

1) Network Provided by Stem (Recommended)

Cellular connectivity on a Stem VPN for secure and reliable connection
Local Area Network (LAN) design, including IP address scheme and assignment, provided and documented by Stem
Hardware arrives to the site preconfigured without any additional communications configuration for Stem-provided hardware devices

2) Provide Your Own Site Network

Purchase internet and provide your own firewall/router/modem to support your own particular network and security policies
Keep the IT management within your own team; Stem hardware can be configured for compatibility with any network or internet service provider
Provide details about LAN settings and desired device IP addresses in advance and Stem will pre-configure hardware for turnkey operation with your network eliminating the need for on-site technicians to configure network settings.

Network Equipment

Network Switches

Fiber Optic

Security

Note: Network architecture designed during site configuration based on equipment locations and communication requirements.

Cameras & Surveillance

Professional-grade surveillance cameras for remote site monitoring and security.

What Camera Systems Enable

Remote visual verification of site conditions
Security monitoring and incident documentation
Visual troubleshooting without site visits
Historical time-lapse site documentation

Camera Options

PTZ Camera - Base

PTZ Camera - Plus

Fixed Camera

Integration note: Cameras integrate with PowerLogger and PowerManager platforms.

Selection criteria: Camera selection based on coverage area requirements, lighting conditions, and budget.

Power Plant Controllers & Telemetry Gateways

Power Plant Controllers (PPCs) and telemetry gateways provide utility-grade control and automation for advanced plant operations. Stem delivers comprehensive solutions using industry-leading hardware from vendors including SEL, Schweitzer Engineering Laboratories, and other premier manufacturers.

What Plant Controllers Enable

Real-time telemetry to utility/ISO
Advanced power plant control (PPC)
Voltage regulation and frequency response
Ramp rate control and curtailment management
Zero net export control
Custom automation sequences

Selection criteria: PPC selection will be based on plant size, control modes, control methods (open vs. closed-loop), and interconnection requirements.

Additional Equipment

Transformer Monitoring

Custom Integration

Custom device drivers for non-standard equipment
Modbus TCP/RTU support for third-party equipment
API data output options for external systems
Analog signals (mV, mA)
Digital signals (dry contacts)

PowerTrack Control Dashboards

Enhance your monitoring system with custom PowerTrack dashboards designed for specific control and monitoring needs. Each dashboard is configured to your site specifications and integrated with your DAS or SCADA hardware.