challenges
For Business
Who We Are
Results
search
Get Started
I want to launch a challenge
Connect to talented problem solvers
I want to solve a challenge
Join our community to win prizes
log in
menu
log in
challenges
For Business
Who We Are
Results
share
Follow
Following
Unfollow
alden sprague
share
Follow
Following
Unfollow
Huntington Station, New York, United States
message
“Interest in renewable energy”
Roles I’m interested in
Innovator
Read More about alden
“Interest in renewable energy”
Roles I’m interested in
Innovator
more
Challenges
Following
Activity
Awards
Challenges
Submissions
VACLOOP
A vacuum activated closed loop renewable energy system
read more...
by
alden sprague
Following
Activity
Awards