Generac PWRmicro PM-820 | Solar Microinverter
The Generac PWRmicro PM-820 is a high-performance 820W dual-input microinverter designed to maximize energy harvest from high-powered solar panels (up to 500W per input). With 97% CEC efficiency, 2:1 architecture, and advanced features like nighttime commissioning, it delivers reliable, installer-friendly solar power. Backed by a 25-year warranty and seamless integration with PWRcell battery storage
Original price was: $450.00.$399.00Current price is: $399.00.
Product details
The Generac PWRmicro PM-820 is a high-performance 820W dual-input microinverter designed to maximize energy harvest from high-powered solar panels (up to 500W per input). With 97% CEC efficiency, 2:1 architecture, and advanced features like nighttime commissioning, it delivers reliable, installer-friendly solar power. Backed by a 25-year warranty and seamless integration with PWRcell battery storage
| Output Power | 820W Output Power (Dual MPPT) |
|---|---|
| Architecture | 2:1 Architecture |
| Efficiency | 97% CEC Efficiency |
| Warranty | 25-Year Warranty |
Description
⚡ Overview
The PWRmicro PM-820 by Generac is a high-power, dual-input microinverter designed to maximize energy production from today’s high-wattage solar panels.
With 820W output and a 2:1 architecture, it reduces the number of microinverters needed while delivering excellent efficiency and installer-friendly features. Backed by a 25-year warranty, it is ideal for residential solar systems and seamless integration with Generac’s PWRcell battery storage.
Fully compliant with UL 1741 SB, IEEE 1547, and Rule 21, it meets the latest U.S. grid and safety requirements.
🔑 Key Features
- 820W Output Power (Dual MPPT)
- 2:1 Architecture – requires half as many microinverters
- Reduces clipping with panels up to 500W per input
- 97% CEC Efficiency
- Nighttime commissioning with Field Pro app
- Instant discovery & mesh networking
- 25-Year Warranty (includes 5-Year Labor Coverage)
- Type 6 / IP67 Rated enclosure
- Seamless integration with PWRcell 2 storage
📊 Electrical Specifications (PM-820)
| Parameter | Value |
|---|---|
| Recommended Input Power (STC) | Up to 500W per DC input |
| Maximum DC Input Voltage | 70V |
| MPPT Voltage Tracking Range | 31 – 42.5V |
| Operating Range | 24 – 65V |
| Min/Max Start Voltage | 22.5 – 51V |
| Max Input DC Short-Circuit Current | 21A |
| Max Module Isc | 18A |
| Number of MPPTs / Inputs per MPPT | 2 / 1 |
⚡ AC Output
| Parameter | @ 240V | @ 208V |
|---|---|---|
| Max Continuous Output Power | 820VA | 820VA |
| Max Continuous Output Current | 3.42A | 3.94A |
| Nominal Output Voltage / Range | 240 / 211–264V | 208 / 183–229V |
| Nominal Frequency | 60 Hz | |
| Power Factor (Programmable) | -0.9 to 0.9 | |
| THD | <5% | |
| Max Units per 30A Branch (240V) | 7 units (14 modules) | |
⚙️ Efficiency
- CEC Weighted Efficiency: 97.0%
- Peak Inverter Efficiency: 97.3%
- Static MPPT Efficiency: 99.5% – 99.8%
👉 You get outstanding real-world energy harvest from every panel.
🔧 Mechanical Specifications
| Parameter | Value |
|---|---|
| Dimensions (W × H × D) | 14.8″ × 10.0″ × 2.2″ (37.6 × 25.5 × 5.7 cm) |
| Weight | 8 lbs (3.62 kg) |
| Enclosure Rating | Type 6 (IP67 equivalent) |
| Ambient Temperature Range | -40°F to +149°F (-40°C to +65°C) |
| Cooling | Passive |
🌡️ Operating Conditions
- Operating Temperature: -40°C to +65°C
- Nighttime Power Consumption (after commissioning): 400mW
🔌 Installation & Compatibility
Compatible Panel Range:
- Up to 500W+ modules per input (recommended)
Branch Circuit Limits (240V):
- Up to 7 microinverters (14 modules) per 30A branch
📡 Monitoring & Communication
- Mesh Networked Power Line Communication (PLC)
- Monitoring via Generac Smart Combiner
- Built-in cellular support for remote access
🛡️ Safety & Compliance
- UL 1741, UL 1741-SA, UL 1741-SB
- IEEE 1547:2018 / 1547.1:2020
- CA Rule 21, Rule 14H (HECO), ISO-NE, PRC-024
- FCC Part 15 Class B
🏗️ Ideal Applications
Best for:
- Residential rooftop systems
- High-power modern solar panels
- Systems paired with Generac PWRcell battery storage
- Installations needing fast commissioning
💡 Why Choose Generac PWRmicro PM-820
- Higher power density – fewer units, lower installation cost
- Exceptional efficiency & reliability from a trusted brand
- Best-in-class warranty with labor coverage
- Native integration with Generac’s energy storage ecosystem
Customer Reviews
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