Solar Technologies, Inc. 147 S. River Street, Suite 207, Santa Cruz, CA 95060 (831) 460-1250 or (800) SOLQUEST (765-7837) sales@solartechnologies.com

May 18, 2001

Proposal for 4000 Watt Grid Intertie and Battery Backup Solar Electric Generation System

Project Site:
Site Location:
System Type:	Utility intertie w/ net metering, with battery back-up, 48 VDC nominal input, 120 VAC output
Total Array Power:	4,200 Watts Peak DC
Mounting:	Collectors to be mounted flush to roof.
Solar Access:	Unshaded, nominal south facing roof area. Approximately 400 sq. ft required.
Estimated Energy Production:	5,200 kwhr/year, based on Northern California Average Solar Radiation in non-coastal areas

We are very pleased to present this proposal for solar electric generation system. All Components are UL listed and certified for the CEC Buydown Rebate Program.

1. Quantity 40 Photowatt PW1000-105 Solar Modules.

These 40 modules are to be wired in 10 series-strings of 4 modules each. Each series-string output is a nominal 48 VDC.

Module Peak Power Rating: 105 Watts Total Array Rating: 4,200 Watts Panel dimensions: 52.56 in x 26.5 in x .96 in. CEC Buydown Module Rating: 94.6 Watts. Total Array Area Required for 40 panels: 400 sq ft Mfg. Warranty: 25 Years

2. Quantity 40, UniRac Flush Mount Model U-RF/104L Roof Mount Module Racks, which feature lightweight, corrosion resistant, and durable aluminum construction. There are no painted steel components that can rust. All hardware is stainless steel or zinc plated to provide maintenance free racks for a lifetime. Designed and warranted to withstand 120 mph winds. Made in the USA.

Number of PV panels per modules: 4 Material: Aluminum Structure, SS Hardware Tilt Angle: Fixed at existing roof slope Roof Attachment Penetrations: 40 Unit Ship Box Dimensions: 4 x 4 x 104 in. each Unit Ship Weight: 30 lbs

3. Quantity 1, Trace Engineering PP-SW4048/S Power Panel Inverter which features Sine Wave Power, peak efficiency to 96%, Utility Interactive Sell Mode, LCD data and programming panel, all NEC/UL required DC and AC input/output over-current protection and disconnect breakers factory pre-wired and installed on a powder coated steel back plate. UL Listed. Made in the USA.

Continuous Power Output: (4000 Watts) AC Voltage Output: 120 VAC Nominal Input: 48 VDC Nominal Peak Efficiency: 96% For indoor use only. Ask for spec sheet for further details. Mfg. Warranty: 5 Years Factory Extended

4. Required for balance of system

   3 yr extended warranty adder from Xantrex/ Trace (Trace's standard warranty is only 2 years; the CEC requires 5 years to qualify for Buydown assistance) 2 ea Lightning Surge Protector 2 ea C40 Charge Controllers 3 ea Battery temperature sensor BTS-15 2 ea C40 remote display with 100’ cable 2 ea PV Array Combiner box, TCB10 2 box Combiner box fuses, TCF-8 4 ea Concorde Sun Xtender Sealed Batteries (maintenance free)   (12 volt, 105 amp-hr, 70 lbs.) 2 ea Battery to inverter 4/0 cables 3 ea 12" 4/0 battery cables 2 ea 24" 4/0 battery cables (eliminate) 1 ea AC Disconnect Switch 1 ea Ground Fault Protection Device, PVGFP2 and enclosure 1 ea AC kilowatt-hour meter and base 1 ea Battery amp-hour meter TM500-NS 1 ea Battery amp-hour meter – 48 volt adaptor, TM48

The California Energy Commission (CEC) Emerging Renewables Buydown Program rebates will reduce the net cost of the above system components by $16,177.00. This figure is based on the CEC certification ratings of 94.6 Watts for the Photowatt PW1000-105 Modules, and 95% efficiency for the Trace SW4048 Inverter. The CEC certification rating of 94.6 Watts/module is based on PTC (PVUSA Test Conditions) power rating which is more conservative than the STC (Standard Test Conditions) power rating of 105 Watts listed in the manufacturers specifications. The above rebate estimate is therefore based on 40 modules at 94.6 watts each multiplied by the inverter efficiency of .95 equaling 3,595 Watts CEC Certified System Rated Output. The California Buydown rate is $4.50 per watt, or 50% of the system cost, whichever is less.

* Available in CA only. The applicable "maximum" buydown for this system is $16,177.00, which is 50% of the above system cost, provided it does not exceed 50% of the systems "total cost" including the equipment cost outlined above, installation costs, permitting fees, and sales tax. You will receive a check directly from the State of California after you have completed the installation and presented a copy of the signed-off building permit.

Included in the system component pricing are the following services:

• Design consultation
• Assistance with CEC buydown rebate application (in California)
• Assistance with utility company intertie agreement (in California)
• Assistance with local permitting authority, if located within 45 minutes from Santa Cruz, CA
• Technical support to your electrical and mechanical installers
• Customized operation and maintenance owners binder
• Owners training in system operation and maintenance
• Sales Tax -- If applicable. CA is considering elimination of sales tax for solar.
• Shipping charges

Not included in this proposal unless arranging installation through Solar Technologies:

• Mechanical and Electrical Installation Labor
  (This system will cost about $7,000 for us to install, depending on location, and complexity of the job.)
• Wiring, conduits, battery enclosure, and other electrical connection hardware
• Rack mount roof bolts, standoffs, and roof penetration sealant
• 5 Year System Labor Warranty, required by the CEC for rebate fulfillment
  (unless we do installation)
• Permitting assistance, permit fees, and any special engineering or drawing requirements

Delivery: 3-4 weeks ARO

Quotation Validity: 30 days

Terms: 50% with order, balance due on delivery, Cash, Check, or Credit Card Accepted (small surcharge added for credit card payments)

Notes: Prices subject to change without notice. Pictures above are representational. Details of actual hardware delivered may be slightly different. We reserve the right to substitute PV collector of equal or better quality and power generation characteristics.

Thank you again for the opportunity to provide this proposal. We will look forward to working with you on this project and will do everything possible to exceed your expectations and insure your lasting satisfaction!