solar-inverters

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

Max Output Power
330,000 W1
Max Input Voltage
1,5002
MPPT Tracking
1 count1
Input Voltage Range
1500 Vdc3

Power Ratings

Max Input Power
660,0002
Rated Power
330,0003

Electrical Input

Maximum Input Current
266.72
DC Connection
14

Performance

Efficiency
99 %3
Operating Temperature Range
up to 45°C3

Physical Characteristics

Weight
175 kg5
IP Rating
IP651
Physical Dimensions
1.09 meters wide, 91.4 cm high, 41.6 cm deep, weight 175 kg

Connectivity

Communication Interfaces
cybersecurity features, monitoring, multilayered protection1

Efficiency

Efficiency Max
99 %4
Mppt Efficiency
98.8 %4
Maximum Efficiency
99.22

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

Sources

  1. Source 1solaredge.comsolaredge.com4 facts
    Open
  2. Source 3knowledge-center.solaredge.comknowledge-center.solaredge.com4 facts
    Open
  3. Source 4knowledge-center.solaredge.comknowledge-center.solaredge.com6 facts
    Open
  4. Source 5knowledge-center.solaredge.comknowledge-center.solaredge.com1 fact
    Open