─ Top Solar Days Savings ─
Solar Days savings on products you need to build an efficient, reliable solar system.
KITS & BUNDLES
BATTERIES
REFURBISHED
CLOSEOUT
─ 5% Off Solar Kits & Bundles ─
Save more on solar kits & bundles through Solar Days! Add to cart to see your savings.
─ Refurbished Solar Deals ─
Save on refurbished solar products during Solar Days. Free shipping on qualifying orders of $3,000+.
─ Closeout Solar Deals ─
Save now on closeout products through Solar Days. Free shipping on qualifying orders of $3,000+.
─ 10% Off Select Batteries ─
Power more with Solar Days battery savings! Add to cart to see your discount.
─ Prism Solar Flash Sale ─
Prism Solar 445W Monofacial solar panel only $0.25 per watt! This deal won't last long!
Prism Solar 445W Monofacial Solar Panel
The Prism Solar 445W Monofacial Solar Panel delivers reliable, high-efficiency solar production in a durable and streamlined design. Engineered with advanced split-cell technology, this panel minimizes resistive losses while improving overall performance, helping homeowners and businesses maximize energy generation from every installation.
- High-Efficiency Performance – Achieves 21.18% module efficiency, helping generate more energy from available roof or ground space.
- Advanced Split-Cell Technology – Reduces resistive losses, improves power output, and enhances overall system performance.
- Corrosion Resistant Construction – Salt mist certification provides added durability for coastal and high-humidity environments.
─ $50 Off Wiren Battery ─
Get high-efficiency storage with the Wiren Server Rack Battery. Now $50 off during Solar Days!
$50 OFF Wiren | Server Rack Battery | 48V 100AH | U5
The Wiren U5 Rack Battery delivers 5.12kWh of dependable, high-efficiency energy storage in a compact, rack-mounted design. Engineered for scalability and long-lasting performance, it offers up to 6,000 life cycles and 99% charge efficiency making it ideal for residential, commercial, and backup power applications.
- High Efficiency: 99% charge efficiency for maximum energy utilization.
- Long Lifespan: Up to 6,000 cycles for years of dependable use.
- Compact Design: Rack-mounted form saves space and simplifies installation.
- Smart Protection: Built-in BMS safeguards against over-charge, over-discharge, and temperature extremes.
─ Outback Power New Low Price ─
Huge savings on the OutBack Power EnergyCell 5 Battery. Now only $1,300 per battery module!
OutBack Power | EnergyCell 5 Battery | 48V 100AH
The OutBack EnergyCell 5 is a lithium energy storage battery designed to safely store power and deliver it when your home or small business needs it most—during outages, peak utility hours, or off-grid operation.
- Reliable Backup Power: Provides consistent energy during outages, helping keep essential loads powered when the grid goes down.
- Modular & Scalable Design: Stack 3–8 modules per stack and expand up to 24 modules total, allowing systems to grow alongside future energy demands.
- Integrated Intelligent BMS: Actively monitors and balances voltage, current, and temperature to optimize performance, extend battery life, and enhance system safety.
- Simplified Installation & Setup: Automatic stack identification and communication reduce setup time and streamline system integration for installers.
Why Shop at Signature Solar?
Free Shipping on Qualified Orders $3,000+
Top-Quality Solar Brands
Everyday Savings on Top Products
Promotion Exclusions
- 5% Off Kits & Bundles
- Only applies to batteries within the Kits & Bundles category.
- Valid only during the promotional period.
- Orders placed after the sale ends will not receive the discount.
- Discount valid for retail customers only (not valid for installers, wholesale, or other special customer groups).
- Discount cannot be applied to prior purchases.
- Cannot be combined with other discounts, promo codes, or bundle pricing, except for the free shipping promotion on qualifying orders.
- 10% off Select Batteries
- Only applies to batteries within the Battery Blowout Sale category.
- Valid only during the promotional period.
- Orders placed after the sale ends will not receive the discount.
- Discount valid for retail customers only (not valid for installers, wholesale, or other special customer groups).
- Discount cannot be applied to prior purchases.
- Cannot be combined with other discounts, promo codes, or bundle pricing, except for the free shipping promotion on qualifying orders.
- Free Shipping Discount
- Must spend $3,000 or more to qualify for free shipping.
- Solar panel pallets are not eligible for shipping discounts.
- Large module solar panels are not eligible for shipping discounts.
- Any product or order that ships to a terminal is not eligible for shipping discounts.
- Chiko Carports, and Chiko Ground Mounts are not eligible for shipping discounts.
- Valid in the lower 48 states only.
- General customer only. Excludes special customer groups including: installers, wholesale, and B2B customers.
- Promotion is valid only during the promotional period. Limited time offer.
- Discounts cannot be applied to past or future purchases outside of this timeframe.
- Signature Solar reserves the right to modify or end the promotion at any time without notice.
- Promotion does not apply to out-of-stock products.
- Additional exclusions may apply.
General Exclusions
- Limited time offer.
- Offers, including shipping promotions, are valid only for general customers. They do not apply to installers, wholesalers, or other special customer groups.
- Returns on discounted products will be refunded at the price paid, subject to Signature Solar’s return policy.
- Orders must be placed and completed during the promotion period to qualify.
- Signature Solar reserves the right to modify or cancel promotions at any time.
- Standard exclusions apply.
- For questions, please contact support@signaturesolar.com.