UL Certifies Capstone MicroTurbines for Grid Interconnection

March 26, 2006 by Jeff Shepard

Capstone Turbine announced that its 30- and 65-kilowatt renewable energy systems are the first generators to be classified by Underwriters Laboratories to the UL2200 standards for Stationary Engine Generators, under the new category of Engine Generators Fueled by Biogas or Raw Natural Gas.

These products are additionally Listed to UL1741, the standard for Inverters, Converters, Controllers and Interconnection System Equipment for Use With Distributed Energy Resources. UL1741, which references IEEE 1547 and IEEE 1547.1, is being accepted as the US national utility grid interconnection standard. In 2001, Capstone MicroTurbine® systems were the first non-photovoltaic generator to be listed to the UL1741 interconnection safety and operations standard.

"This certification, President Bush's new initiative for grid-interconnected renewable resources and our newly released CR65 biogas-fueled energy system will be yet another major step for us and for the nation's future of clean, renewable energy," said Capstone Turbine Corp. CEO John R. Tucker. "I believe this new certification will encourage operators of landfills, oilfields and wastewater treatment plants to reduce their flaring of these gases into the atmosphere. Instead, those operators can now burn these ‘waste' gases in renewable energy generating Capstone MicroTurbines, the first flare-gas-fueled generators that currently meet these UL standards."

"Nearly 15% of the Capstone MicroTurbines sold and shipped worldwide are designated to use commonly flared landfill, sewage, livestock and upstream petroleum gases as a fuel to create renewable energy with extremely low pollutant emissions. In addition, about 25% of our current backlog are for these types of units, so we are seeing greatly increased market interest in our renewable-fueled models," said Tucker. "We've been a trailblazer in this field. This new UL category will complement our products' existing certifications, streamline site-specific grid interconnection issues and further assure regional regulators of our products' safety."