Spring Ventures founder Sunil Paul presented at South by Southwest on how the future of cleantech is actually the cleanweb. AllThingsD’s Kara Swisher has posted Paul’s slide deck online and it’s worth a look. Paul strongly believes that the future is about using the internet and mobile phones to increase resource efficiency, rather than just developing new technology to generate renewable energy. Classic examples of this are collaborative consumption leaders Airbnb and Zipcar, which rely on smartphones and the internet to help folks share homes and cars. It’s a very Silicon Valley startup approach to altering energy use, but you have to rely on Silicon Valley entrepreneurs to do what they know—using low capital expense, web based tools to find solutions to problems.