Price Tiers

Tier Millis Total kW Cost/Watt
Tier 1 1 – 35 kW $3.39/watt
Tier 2 35 kW – 75 kW $3.29/watt
Tier 3 75 kW – 135 kW $3.19/watt
Tier 4 135 kW – 200 kW $3.09/watt
Tier 5 200 kW+ $2.99/watt

Basic System Components

Major Component Manufacturer Model Number
Inverter(s) SunPower Integrated Microinverter 320 Watts
PV Modules SunPower 327 Watt AC Module
SunPower 335 Watt AC Panel
SunPower 345 Watt AC Panel
SunPower 360 Watt AC Panel
Mounting System SunPower InvisiMount
SunPower InvisiMount
Patriot Solar Grandstand ground-mounted systems

Adders

Purchased projects Purchased projects Lease/PPA Projects
Warranties Increased Cost ($/watt) Flat Rate Adders ($/watt) Increased Cost ($/kWh) Description of Cost Adder/Scope of Work
20-Year installation workmanship warranty Included We will repair defects in workmanship for 20 years (please see our warranty document).
20-year Roof Protection Warranty Included We will repair roof leaks that occurs within 1′ of any of our roof penetrations (please see our warranty document).
20-year Performance Warranty Included Performance warranty at 95% of expected production for 20 years. Customer will recieve payment for lost electricity generation, and lost SREC income, relative to the production warranty. (Please see our warranty document. Customer must keep a live Internet connection for the warranty to apply.)
Revenue Grade Monitoring >10 kW Included SunDial Revenue Grade Monitoring (Customer must keep a live Internet connection for SunDial monitoring.)
Module monitoring Included Provided by SunPower
Site Specific Increased Cost ($/watt) Flat Rate Adders ($/watt) Increased Cost ($/kWh) Description of Cost Adder/Scope of Work
Multiple roof arrays $300 $0.003 More than one roof plane
Flat roof/Tilt racking $0.15 $0.02 Ballasted Racking
Steep or High roof (steeper than 36 degrees (9-pitch) or Gutter height higher than 32 feet.) $0.15 $0.02 Roofs steeper than 36 degrees, gutter edge higher than 30 feet
Top of Pole Mounted System $1.25 N/A 2 or 15 panels per pole, 2 pole minimum per site. (excludes surveyor or related fees)
Grandstand Mounted System $0.75 N/A Increments of 2 panels, 20 panel minimum. (excludes surveyor or related fees)
Plumbing Vent Pipe Move $350 for first vent pipe, $200 for each additional vent pipe move $0.003 When possible
Electrical Increased Cost ($/watt) Flat Rate Adders ($/watt) Increased Cost ($/kWh) Description of Cost Adder/Scope of Work
Main Panel upgrade $1,000 N/A Replace full 200 amp panel with panels with more slots, typically 24 slots to 40 slots
Trenching $1,500 $0.015 Includes 100-foot trench. $20/ft after that. Does NOT include landscaping, loam, or seeding.
Squirrel/pest control system $0.20 $0.01 Protection from damage from small animals
Snow guards $15/ft $0.02 10 ft minimum
Structural Increased Cost ($/watt) Flat Rate Adders ($/watt) Increased Cost ($/kWh) Description of Cost Adder/Scope of Work
Reinforcing rafters $0.18 $0.015 Per Professional Engineer requirements
Electrical service upgrade(above ground) $2,200 N/A Upgrade to 200 amp service
Other Increased Cost ($/watt) Flat Rate Adders ($/watt) Increased Cost ($/kWh) Description of Cost Adder/Scope of Work
Revenue Grade Monitoring <10 kW $800 N/A For systems less than 10 kW, auto reporting for SRECS
SunPower 335-watt High Efficiency X21-Series modules $0.65 N/A SunPower All Black Modules
SunPower 345-watt High Efficiency X21-Series modules $0.65 N/A SunPower x21 series cells flashing at 345 watts plus
SunPower 360-watt Highest Efficiency X22-Series modules $0.75 N/A SunPower x21 series cells flashing at 360 watts plus
Mass Solar Loan Processing fee $250 N/A Mass Solar Loan Admin costs
Systems greater than 25 kW DC Priced per job.