The ProStar solar charge controller has been the leading mid-range pulse width modulation (PWM) controller since 1995. With over 350,000 units installed in the harshest environments in over 100 countries, ProStar sets the standards in performance and reliability for the rest of the solar industry.

The Generation 3 ProStar shares the outstanding build quality and familiar form factor of its predecessors and adds data and lighting control capabilities, a graphical interface, and advanced protection features that meet the needs of today’s most demanding off-grid solar applications. ProStar provides both “the legend and the latest” in a single new product.

“…you get what you pay for, and this one is worth every penny…count on Morningstar.”


Models: PS-15, PS-15M, PS-30, PS-30M,

Specifications and Certifications by Model

Model PS-15 PS-15M PS-30 PS-30M
Charge Rating 15 amps 15 amps 30 amps 30 amps
Max. PV Open Circuit Voltage (Voc) 60 volts 60 volts 60 volts 60 volts
Nominal Battery Voltage 12V or 24V 12V or 24V 12V or 24V 12V or 24V
Battery Voltage Range 10-35V 10-35V 10-35V 10-35V
Voltage Accuracy <=0.1% +/- 50mV <=0.1% +/- 50mV <=0.1% +/- 50mV <=0.1% +/- 50mV
Operating Temperature Range -40 C to +60C -40 C to +60C -40 C to +60C -40 C to +60C
Warranty 5 Years 5 Years 5 Years 5 Years
Built-in meter No Yes No Yes
CE and RoHS compliant Yes Yes Yes Yes
TAA compliant Yes Yes Yes Yes
Approved for use in Hazardous Locations: Class 1, Division 2, Groups A-D Yes Yes Yes Yes
IEC 62109 Yes Yes Yes Yes
ETL Listed [UL-1741 and Canadian CSA C22.2 No.107.1.01] Yes Yes Yes Yes
FCC Class B Part 15 Compliant Yes Yes Yes Yes
Manufactured in a Certified ISO 9001 Facility Yes Yes Yes Yes
Key Features and Benefits
  • High Reliability
    Latest electronic and environmental protections, quality control, and design considerations comply with IEC 62109 and promote longevity in the harshest environments
  • High Temperature Operation
    Full nameplate current rating, both solar and load up to 60°C continuous
  • Auto-Battery-Select
    12V and 24V systems
  • Data Logging
    Up to 256 days of solar charge and load consumption data
  • Self-diagnostics
    Continuous monitoring and reporting of any errors or system faults through its status LED’s, optional display and communication port
  • Meter
    High resolution LCD, multi-lingual backlit graphical display of system voltage, current, temperature, lighting settings, etc.
  • Custom Programming
    Dip switches, meter interface, or connection with a computer can be used to adjust charging, load communications, and lighting control
  • Low Noise Design
    Meets US Federal Communications Commission Class B specifications
  • Automatic Solar-Based Lighting Control
    Field adjustable, multi-event load control enables powerful options for solar lighting systems
  • MODBUS Communications
    Open standard MODBUS communications protocol allows for control and remote data access
  • SNMP (Simple Network Management Protocol) Monitoring
    Provides more detailed monitoring of all system data with existing IT management and architecture when connected to EMC-1 accessory

ProStar (Gen3) Controller | 3 Minute Video

This short video highlights the ProStar (Gen3) PWM solar charge controller. This device has been upgraded, while maintaining the same quality and form factor of previous models that have been installed in over 100 countries in the world’s harshest environments since 1995. View this video to learn about the new features and capabilities of this product including enhanced custom programming, data logging, communications, and lighting control.

Morningstar "Charging Experts" Featuring ProStar | 6 minute video

This 6 minute video highlights the ProStar solar charge controller’s HazLoc ratings and circuit board that differentiates it from other brands. In addition to the capacitors, inductors, processors, surge protectors, and other over-spec’d internal components, the quality of the controller’s heat sink and outer casing is also addressed. The video concludes with mention of features and capabilities related to communications, datalogging, lithium battery charging, and high quality and reliability.