The year 2013 is now officially the year with the most active IPO market in the United States since 2000. There have been 218 IPOs to date in 2013. [1] The year 2000 (over 350 IPOs) was the last year of a 10 year boom in US IPOs that reached its peak in 1996 (over 650 IPOs). The strongest year for IPOs since 2000 was (until now) 2004, with roughly 215 IPOs. That number has now been exceeded as of December 12, 2013 and I believe that there are at least four other IPOs seeking to price before the end of 2013.

What has that meant for emerging energy technology and renewables companies that might be looking to the capital markets? There has been some activity in 2013 – but not much compared to the broader market or to the more traditional energy and oil & gas sector.

For a handful of larger energy tech companies that are already public (eg, First Solar, Tesla, SunEdison, SolarCity), it has meant follow-on offerings to bolster cash for growth. These companies accessed the market over the last several months; Tesla (May 2013), First Solar (June 2013), SunEdison (September 2013) and SolarCity (October 2013).

For a couple of energy companies with renewables portfolios, it has meant IPOs for “YieldCos,” vehicles that hold energy generating assets and pay a stream of dividends, such as NRG Yield (which went public in July 2013) and Pattern Energy (which went public in September 2013). FYI – I expect to see more of these in the coming years.

There has not been as much activity in initial public offerings for a range of emerging technology companies focused on energy. For example, next generation biofuels producers are not accessing the IPO market again, though BioAmber, a renewable chemicals company was able to complete an IPO in May 2013. The offer price range was reduced from an initial $15-17 to $10-12 and the deal eventually got priced at $10 per share. More traditional ethanol producer Green Plains Renewable Energy was able to raise $120 in a convertible note offering. Smart grid company Silver Spring Networks was able to complete an IPO in March 2013 – at a $17 per share price right in the middle of the expected pricing range. The company’s stock climbed to an intraday high of almost $34 in August 2013 but has come back to trading slightly above the IPO price at $20.89 as of the close on December 11, 2013.