Here’s the latest action we’re following today on the GreenBeat:

Solazyme to IPO soon — Algal biofuels and oils startup Solazyme is expected to submit an S-1 — the paperwork to kick off an IPO filing — sometime next month, according to sources cited by Greentech Media. Some venture capitalists like Alan Salzman of VantagePoint have predicted this will be a good year for IPOs and M&A deals in cleantech. Biofuels company Gevo raised $107 million in public markets earlier this week; an LED company also filed to go public today.

GE buys Wind Tower Systems (WTS) — WTS’s next generation technology is expected to enable taller wind turbine towers. The need for taller, cost-efficient towers is becoming an important factor in the wind industry as blade lengths increase, GE says. Terms of the deal were not disclosed.

IBM launches energy efficient cell towers — The deal with Bharti Infratel, an Indian cell company, will use IBM’s sensors, software and data analytics to network together 32,000 of Bharti’s cell towers. The upgrades will allow Bharti better maintain the towers and identify areas where energy efficiency savings can be achieved.

Air Force approves biofuels — For the first time, the U.S. airforce will allow an aircraft unlimited usage of blended bio- jet fuels. The Air Force approved an aircraft called the C-17 Globemaster III for biofuels use. The move comes a few weeks after a report by RAND found that biofuels provide no tangible benefit to the ¬†military.

[Image via Flickr/suicine]