May 16, 2008. /Lesprom.com/. Greenwood Technologies overhauled the traditional outdoor wood boiler to create a next generation of indoor and outdoor wood-fired furnaces, and investors are starting to take notice. Clean tech wood boilers are helping households and light commercial businesses address rising fuel costs because of the locally available and renewable fuel source – firewood. They also produce approximately 90% less wood smoke and are twice as efficient when compared to traditional wood boilers. These significant benefits are making a difference to communities struggling with federal non-attainment for air quality. The clean technology market – from solar to hydropower – has grown considerably since it first began to gain presence in the early 2000s. Recent research by the Cleantech Group found that venture capital investments in the sector could exceed $19 billion by 2010. The clean tech wood boiler industry is adding unique potential to the sector. Unlike other clean tech businesses, Greenwood is focusing its efforts on the 20 million households which use fire wood as a means to heat their home. The pace of growth in this segment has been further accelerated by rising fuel prices, environmental awareness, and desires for independence from foreign oil interests. Greenwood Technologies sales are on track to reach more than $10 million by the 4Q 2008 and could reach $30 million by 2010.