© 2014 SunPower Corporation

EPRI-Sandia PV Systems Symposium

SunPower Oasis Robotic Panel Cleaning System

Kyle Cobb, Product Manager

2 © 2014 SunPower Corporation

Panel Soiling Reduces Plant Performance By Up To 15%

Note: Panels on the left-hand side have not been cleaned, panels on right-hand side have been cleaned by SunPower Oasis robotic cleaning system.

3 © 2014 SunPower Corporation

Introducing: SunPower Oasis Robotic Panel Cleaning System

4 © 2014 SunPower Corporation

Robot Fleets Allow Swift Deployment to Combat Soiling

Full-sized truck equipped with

water tank and battery charging

stations to service robots

Four robots operate at any one

time; robots require minimal

maintenance between shifts

Two operators manage the robot

fleet and service robots with

batteries, water as needed

throughout site

5 © 2014 SunPower Corporation

Robotic Cleaning Means Higher Performance, Lower LCOE

1.2L / panel

~0.12L / panel (at minimum)

WATER SAVINGS

of up to 90%

TRADITIONAL CLEANING*

SUNPOWER OASIS ROBOTIC CLEANING

21 seconds / panel

6 seconds / panel

CLEANING RATE

More than 3x faster

Exact cost

varies by site

SIGNIFICANT

COST SAVINGS

* Competitive information based on actual field operations and SunPower’s estimates.

Exact cost

varies by site

6 © 2014 SunPower Corporation

Robotic Cleaning Just Part of a Broader Automated and Integrated O&M Solution

Predictive Modeling

Simulation modeling tools

help to optimize panel

cleaning schedule and

minimize the impact of

soiling on plant production

Real-time Monitoring

Remote performance

monitoring can

automatically trigger

O&M response

In-field response

Module cleaning is one

example of O&M activity

that can be automated;

still room for more

innovation

Oasis cleaning robots

© 2014 SunPower Corporation © 2014 SunPower Corporation. All Rights Reserved. SUNPOWER, the SUNPOWER logo and OASIS are trademarks or registered trademarks of

SunPower Corporation in the U.S. and other countries. All other trademarks are the property of their respective owners.