Get yours today!
In the last 7 days
Delivery timeframe shown above at checkout
Unlimited lifetime support, always available.

● Available | Contact us for lead time and pricing
Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.
Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.
All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.
We offer several ways to pay to make getting your solar kit simple:
Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer
You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.
Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.
Model STP 50-US-41 | 50 kW | 3-Phase | Commercial & Industrial
The SMA STP 50-US-41 Tripower CORE1 50-US inverter is a high-performance, three-phase inverter built for large-scale commercial and industrial solar installations. This inverter provides 50 kW of output power, meeting the demands of high-capacity solar energy systems. With advanced technology, it maximizes energy conversion and guarantees peak efficiency for your solar installation. Its robust design includes integrated communications and both AC and DC disconnects, enhancing safety, simplifying installation, and making it a perfect fit for commercial solar energy applications.
Industry-Leading Efficiency: Achieving up to 98% efficiency, it stands among the top-performing inverters in its class—maximizing energy yields and return on investment.
Integrated Communications: Built-in communication capabilities enable seamless remote monitoring and system diagnostics through SMA's Sunny Portal with real-time data and insights.
AC and DC Disconnects: Integrated disconnects reduce the need for additional equipment, streamline installation and maintenance, and meet electrical compliance standards.
Compact All-in-One Design: Space-efficient design saves valuable installation space in commercial and industrial settings, enabling faster deployments and system scalability.
Enhanced Safety Features: Quick and easy shutdown capabilities improve worker safety during service, making it a safer choice for commercial and industrial applications.
This advanced inverter converts DC power generated by solar panels into usable AC power. It is designed specifically for commercial or industrial installations requiring three-phase power. Real-time monitoring enables performance adjustments and maximizes energy output.
Energy Conversion: Transforms solar panels' DC output into AC power compatible with your electrical system with minimal energy loss during transformation.
Energy Management: Integrated monitoring tracks energy production and system health, providing valuable insights for optimization and troubleshooting.
System Integration: Communication features allow full integration with your solar system, ensuring smooth and efficient operation at all times.
| Manufacturer | SMA Solar Technology |
| Model Number | STP 50-US-41 (Tripower CORE1) |
| Output Power | 50 kW |
| Phase Type | Three Phase |
| Efficiency | 98% |
| DC Voltage Range | 400–800 VDC |
| AC Voltage Output | 208–240 VAC |
| Dimensions (L × W × H) | 29 × 22 × 10 in |
| Weight | 198 lb |
Features: Integrated AC & DC Disconnects, Sunny Portal Monitoring
Warranty: 10-Year Manufacturer Warranty
● Available | Contact us for lead time and pricing
From hurricanes to blackouts, reliable solar power ensures you're able to keep your home & family safe no matter what comes your way.
Making one-click solar solutions simple since 2018. Whether you’re powering a cabin, charging devices, or backing up your home.
Say goodbye to reliance on the energy companies. Enjoy the same freedom that 50,000+ customers have with their own solar power system.
$150 Value - Free Offer (Limited Time Only!) No Strings Attached. Totally Free. Takes Less than 2 Minutes.