Based on the rash of predictions for cleantech in 2010 from investors, consultants and media (see the full list at the end of this post), I’ve pulled together a “trend of trends” list below that attempts to synthesis the broader, over-arching themes. As always, I’m amazed that water isn’t on the top of every list, every year, although there are some positive signs on that front. So here are the 12 things that filtered to the top:

• Energy efficiency will have a big year, with buildings and information and communications technology (ICT) front and center (nice to see the “wow” factor over technologies like solar being tempered by the realization that there are a lot of cheaper ways to meet immediate goals for reducing emissions)
• Private investment will revive (with one prediction for a record-breaking year), but fears persist that the pending end of stimulus dollars will cast a long shadow over the market
• Differentiation – i.e. marketing – will increase in importance as we move from a technology-heavy phase to a commercialization-focused phase (something I’ve called attention to in the past).
• Consolidation and industry shake-out will accelerate, as will increased involvement of major corporates. Many VC-backed firms need an exit (especially in smart grid, solar and biofuels), so expect a few IPOs, but mostly M&A or failure as scale becomes more important and winners and losers emerge. And as the market grows and the issues being addressed become more complex, big multinationals with vested interests will try to play a larger role
• Smarter transportation – especially electrified – continues to gain traction, while next generation liquid fuels (cellulosic in particular) takes baby steps
• It’s more than energy, stupid. Land, water, rare earth metals, etc take more mind share as understanding grows  that the issues we face go beyond energy and carbon
• Importance of carbon measurement and management will increase, but folks seems pretty skeptical that even if climate legislation/treaties get enacted that they will be aggressive enough (some expect sector specific carbon regulation – i.e. aviation and shipping – instead of economy-wide measure  
• Distributed solutions continue to erode the power of centralized systems (in energy generation, building, transportation, etc)
• Some technologies expected to garner attention: Waste to energy, waste biomass, power storage, geothermal, aquaculture, ultracapacitors, desalinization, building materials, large-scale solar
• There is a lot of expectation around advancements and interest in upgrading the electric grid; although there was a warning to expect at least one major failure of a smart grid rollout (not to mention that people have been predicting an intelligent grid for many years)
• Standards gain a higher profile – whether building codes, water or carbon labeling, unified standards for the smart grid, etc, creating a clear marked playing field grows in importance, including communicating the rules to consumers as needed
• International competition to be the cleantech leader intensifies (again this is something I’ve written about in the past, so not really news in my opinion)

If you want to read for yourself, the various predictions I’ve pulled from are here: Energy stocks to watch from Seeking Alpha; Overall industry outlook from the Cleantech Group; Clean energy predictions from Deloitte; Two different VC perspectives, one from Lightspeed Venture Partners  and the other from Rob Day at Black Coral;  5 biggest hurdles from Earth2Tech; IT and corporate green from Greenmonk’s Tom Raftery; Green building trends from Earth2Tech;  Top 10 promises from cleantech companies from Cleantech Group; Smart grid from Earth2Tech.

Technologies and services that reduce natural resource consumption and emissions are the future of global growth, as well as the pathway to climate stabilization. In China alone, expectations are for a $1 trillion annual "cleantech" market by 2013.

We are now entering a transition phase in cleantech, with focus shifting from technology to market commercialization. The winning technologies will win in large part because of marketing and communications. In the case of cleantech, it's not enough as a marketer to be a good practitioner of marketing.

In a world of ever increasing sophistication and specialization, in-depth knowledge of key drivers is essential to success. That means a deep understanding of underlying technology, cultural perceptions, policy, and consumer and enterprise behavior.

Moreover, there is interconnectedness in cleantech that does not exist in other areas of the economy, which requires maintaining unusually high levels of visibility into multiple vertical industries. Here are six keys to success:

1. Think systems. One of the unique things about cleantech is that you can't effectively talk about what you're doing in a silo. It is all inter-related. If you do power storage, it relates to renewable energy and smart grid. If you do water, it's connected to energy. If you do biofuels, it impacts food, water and energy. Your point of view must be developed accordingly.

2. Market the solution, not the problem. There is enough fatigue out there already about the environmental problems we face. Be a face for the solution.

3. Be specific. Talking about "green jobs" or "renewable energy" is no longer enough and audiences are growing more skeptical about "greenwashing." Talk about "wind energy jobs" or "solar power." The more detail you provide, the more believable you become.

4. Drive sales by focusing on your customers' strategic priority. While it may be tempting to lead with the environmental benefits of your product or service, our research shows that compliance and cost/ROI take precedence. Take time to research your customers and understand their primary motivations. You can adapt your message (and channels of communication) accordingly and be far more impactful.

5. Be a policy wonk. Perhaps more than any other space, cleantech requires that you have your finger on the pulse of policy. Whether you are in clean energy, water, smart grid, biofuels or transportation – national and international policy will play a major role. Ignore engagement with policy-makers at your peril.

6. Go digital. Communications have moved online. Social media is the new currency. Find compelling content that can mobilize online communities and get traction for your brand. Ad spend and press releases are becoming less and less effective as the role of online search takes stories directly to individuals at the touch of a button. It can be very cost effective, too.

This first appeared in MediaPost's Marketing: green newsletter

I signed up to blog about climate change for Blog Action Day, but I’ve been so busy trying to do something about climate change that I didn’t have time to blog.

Does this count? Yeah cleantech! Boo climate change!