Cleantech Blog | Premier site for commentary on news and technology relating to clean tech.

A recent KPMG survey shows that most auto executives still believe hydrogen fuel cell cars are going to win and EVs are going to fail in the long run.  Many of the major oil companies believe that biofuels are fundamentally limited in scale, and oil is too carbon intensive so are looking at a EVs […]

MIT recently posted a sensationalist research article where the authors claim 74% of Uber and Lyft drivers earn less than the local minimum wage. Which begs the question, if the authors are right, why in the hell would hundreds of thousands of people do that? Are they all too stupid to do math, have no other options […]

According to Bloomberg, cleantech global capital spending was $333 Billion last year, 40% of that in China.  That’s 3.5x bigger than the COMBINED capex total for Shell, Exxon, BP, Chevron, and Total. Put another way, that’s enough capital to outspend 7 Shell’s and 7 Exxon’s. These are staggering numbers. Bloomberg reports cleantech venture capital was […]

100 years ago my great grandparents were also angel investors – in Infrastructure, Media and Bee tech They invested in media, ag / cleantech, and infrastructure.  Lest you think angel investing is new or VCs are smart – it really hasn’t changed much in a century. In the 1920s my great grandparents were active angel investors […]

You may have followed the discussions at the Davos World Economic Forum recently. Much of this of course is high level politicking, but it can signpost major trends in the general economy. A major theme this year was picked out in the report: The Fourth Industrial Revolution: what it means, how to respond. What are […]

by Neal Dikeman, chief blogger, Cleantech Blog Tesla Motors (NASDAQ:TSLA) has been the electric vehicle darling since almost the day it launched.  I’d argue there are some really neat aspects to its product and strategy, but it is far from a resounding market leader in EVs. The Range and Battery Scale Advantage There are a couple of […]

Analysis of 2014 financial results and valuation of Tesla Motors (NASDAQ:TSLA)

Nature has an ingenious way of extracting water, but does it have the potential to solve many of today’s global water challenges? Before going into more details on how nature’s way of extracting water can help cut energy usage in water treatment processes, an appreciation is needed of why energy reduction in water treatment is an […]

In spite of the political posturing taking place between Japan and Korea and China, the governments are actively working to address this challenge. Hosted by Ministry of Environment of Korea, the Environmental Ministers Meeting among Korea, China and Japan at the end of this April to implement an initiative on enhancing environmental cooperation and dialogue.

At the University of California, Berkeley, a team of engineers is pioneering ocean-source energy technology by using “carpet” to capture the energy generated by ocean waves. The team, which includes wave energy guru and Assistant Professor Reza Alam, and Ph.D. Marcus Lehmann, an engineering researcher, aims not only to capture the kinetic energy contained in […]

A decade ago, biofuels were considered the Holy Grail of combustion-engine fuels. Measurably cleaner than fossil fuels, they were the proverbial light at the end of the tunnel, at least according to some clean energy experts. Fast forward to 2008, when the biofuel industry’s withdrawal of food crops such as corn, rice, wheat and palm […]

The Institute for Market Transformation (IMT) is a Washington, DC-based nonprofit working in the areas of energy efficiency, green building, and environmental protection. Much of IMT’s effort goes toward correcting inadequacies in the construction/remodeling vertical that prevents investors from taking a stake in energy efficiency and sustainability in the United States. Cliff Majersik, Executive Director, […]

It’s particularly troubling to those of us watching the energy efficiency marketplace to see one program or another take a hard hit. That’s why the 2010 class action lawsuit by Henry Gifford against the US Green Building Council – the parent organization of LEED (Leadership in Energy and Environmental Design) – had such wide-ranging responses […]

Over at Bye Aerospace, Inc., Founder George Bye and colleagues are designing drones. But don’t worry. The Denver, Colorado company, founded in 2007, isn’t the site of the next Evil Empire, and the drones which will eventually start going out the door (here or elsewhere, but not under their own power) are meant for peaceful […]

The recent CBS 60 Minutes documentary, The Cleantech Crash, was an apocryphal tale of wasted government funding and failed companies, and left one feeling sorry for a much maligned Vinod Khosla, deemed to be a prime architect behind the ‘failed cleantech revolution’. Khosla has rallied with a strong and stirring rebuttal in open letter to CBS. Cleantech, (if narrowly […]