solar-inverter
SolarEdge TerraMax Inverter
The SolarEdge TerraMax Inverter is a 330 kW, transformerless, utility-scale inverter designed for challenging terrains and various PV system architectures. It features high efficiency (up to 99.2%), module-level MPPT, and supports DC oversizing up to 200%. Suitable for ground-mounted, floating, and agricultural applications, it offers safety features like SafeDC and complies with international standards. Paired with H1300 Power Optimizers, it enables flexible, high-yield solar installations with reduced balance-of-system costs.
Pros and cons
Pros
Strengths called out by generated product content.
- High efficiency up to 99%
- Designed for ground mount community solar, agricultural, and floating installations
- Supports mix-and-match PV modules and different module types
- Longer strings with less wiring and fewer components
- Paired with H1300 Power Optimizers, delivers up to 330kW of power
- Reduces Levelized Cost of Energy (LCOE) through higher production and lower BoS costs
- Virtual central topology with single DC input architecture and module-level MPPTs
- Compatible with oversizing the photovoltaic system up to 200% of inverter’s maximum output
- Available in Italy for small- to medium-sized utility-scale projects
- Provides module level visibility and O&M savings
Cons
Tradeoffs and constraints to review before choosing.
- Failure rate reported as high, with some users experiencing failures within 18 to 24 months
- Inverter failures and need for replacements can be frequent, leading to service load issues
- Older models with LED screens are no longer manufactured, replaced by less interface-rich versions
- Some users report that the failure rate is unsustainable and reliability issues persist
- Repair and replacement can take several weeks, although quicker than before
- Some users find the initial cost premium high compared to alternatives
- In some cases, the system has experienced significant failure rates within the first few years
Notes
Context that does not fit neatly as a pro or con.
- Supports module level MPPTs and mix-and-match modules
- Can be used with Power Optimizers for enhanced performance
- Installation may require certified installers to avoid voiding warranties
- System monitoring can be integrated with SolarEdge ONE platform
- Some users suggest extending warranties to 25 years for better reliability assurance
Electrical Specifications
Power Ratings
Electrical Input
Performance
Physical Characteristics
Connectivity
- Communication Interfaces
- cybersecurity features, monitoring, multilayered protection1
Efficiency
Features
- Features
- 200% DC oversizing, Automatic reduction of DC voltage to touch-safe levels (SafeDCTM), DC-Optimized technology, Global safety and cybersecurity standards, High efficiency (99%), Integrated nighttime PID rectifiers, Module-level MPPTs, Multilayered protection from inverter to cloud4
Protection Features
- DC Reverse Polarity Protection
- Yes2
- Short Circuit Protection
- Yes4
- Protection Features Ground Fault Isolation Detection
- Yes2
- Protection Features AC Surge Protection
- monitored and field replaceable, Type 22
- Protection Features DC Surge Protection
- monitored and field replaceable, Type 22
- Protection Features Can Rs485 Surge Protection
- Yes2
Physical Dimensions
- Physical Length
- 109 cm
- Physical Height
- 91.4 cm
- Type Phase Series Fro P Length
- 109 cm
- Type Phase Series Fro P Width
- 41.6 cm
Environmental
- Max Operation Altitude
- 3,000 m
General
- Warranty
- 5 years4