System size, cost, and availability vary according to location, electricity usage, and utility company. A 5 kilowatt system lease starts at $40-$140 per month for 20 years on approved credit. Payment terms vary and may include fixed payments or escalating payments at a rate of 1.5-2.9% annually for 20 years. Zero due at lease signing. No security deposit required. Contact us for a free copy of our system warranty and performance guarantee. CA CSLB 909236, MA HIC 168430; other contractor license numbers.