SunRenu Cuts Costs at Karuk Casino with SolarEdge TerraMax™ Solution
Longer strings drive ~25% balance-of-system savings while improving system monitoring
SunRenu Cuts Costs at Karuk Casino with SolarEdge TerraMax™ Solution
Longer strings drive ~25% balance-of-system savings while improving system monitoring
Installer Insight
We selected SolarEdge's TerraMax 330kW Inverter for the Karuk Tribe-owned site as it mitigated voltage drop, minimized power degradation, and streamlined installation. Its higher power output substantially decreased the number of inverters needed, lowering labor and balance of system costs. This solution provided great module-level benefits — more energy, greater safety, and much more efficient monitoring.
John McDonnell
Principal, SunRenu
Rooftop Installer Expands into Ground Mount with Proven Tech
SunRenu, traditionally a SolarEdge rooftop installer, saw the TerraMax inverter solution as a natural transition for scaling into large ground-mount projects. The higher-capacity inverters helped them address new markets.
HIGHLIGHTS: EPCs can confidently move from rooftop to large-scale ground mount installations, leveraging proven safety, monitoring, and energy production advantages at scale.
The Challenge
High Energy Costs & Rural Grid Constraints
The Karuk Tribe, California’s largest Native American tribe by membership, built a new casino to serve as an anchor business for their 10-year economic development plan. The tribe wanted long-term financial stability and sustainability for their community.
Running a 24/7 facility in rural Northern California posed unique challenges:
- High utility costs
- Voltage drop and power degradation risks from long cable runs and site layout
- The goal to qualify for a Department of Energy grant as part of funding
This was the tribe’s first large scale solar project and they needed partners with engineering, financing, and grant expertise.
Benefits
A Sustainable Investment in Community and Energy Independence
The Karuk Tribe now operates a 1 MWdc solar system.
Key benefits include:
- ~25% Balance of System savings compared to traditional designs by having strings of up to 52 modules
- Reduced long-term O&M costs with SolarEdge ONE module-level monitoring capabilities
- Safer operations for installers, maintenance teams, and first responders
- Increased energy production through module-level power optimization
- DOE grant alignment
The Solution
SolarEdge TerraMax 1500V Inverter + Optimized Ground-Mount Design
SunRenu, a long-standing SolarEdge installer with 15 years of EPC experience, partnered with WattHub Renewables to develop and deliver the project. The team proposed SolarEdge’s TerraMax 330kW inverter with module-level Power Optimizers, enabling the tribe to maximize output while solving site-specific technical hurdles.
Key features:
- BoS Savings: Longer and fewer strings reduce material and labor costs when compared to traditional string inverters.
- Voltage Regulation: By maintaining 1500V fixed-string voltage, the system also mitigated voltage drop challenges across the site’s long cable runs, ensuring more stable, efficient energy delivery.
- Fewer Inverters, Faster Install: Higher power capacity reduced inverter count, streamlining installation and lowering labor costs.
- Intelligent Monitoring: SolarEdge ONE for C&I monitoring enabled real-time module-level monitoring and streamlined O&M, cutting long-term costs.
Environmental Savings
This PV system produces energy equivalent to:
