Get in Touch

Production formula: System Size (kW) x Sun Hours x 365 x 0.75 (Efficiency Factor)
Sun hours: US/Canada: 4.5 hrs; UK/Europe: 2.5 hrs (reflects lower irradiance)
Efficiency factor: 0.75 (covers inverter losses, wiring, temperature, soiling)
Roof requirement: 75 sq ft/kW (7 m2/kW)
System cost: Region-specific $/W installed (US: $2.85/W, CA: $3.10/W, EU: 1.60-1.80/W)
Utility inflation: 3.5-5%/yr by region
EV consumption: 0.3 kWh/mile average
CO2 factors: US: 0.92 lbs/kWh, CA: 0.38, UK: 0.21, DE: 0.35, FR: 0.06

Whether you need a free solar quote, have questions about our calculator, or want to partner with us, we are here to help in 2026.

Contact Information

Phone

+1 9144276667

Office

123 Solar Avenue, Suite 400
San Francisco, CA 94105

Hours

Mon-Fri: 9am - 6pm PST
Sat: 10am - 2pm PST

Have questions or need assistance? Drop us a message and our technical team will get back to you shortly.