of research conducted at the SERF include semiconductor material research, prototype solar cell production, and measurement and characterization of solar cell and module performance. Additionally, the roof at the SERF is able to house ten PV panels to evaluate and analyze the performance of commercial building-integrated PV systems. Additionally, R&D in PV materials and devices, measurement and characterization, reliability testing are also conducted at the SERF. At the Solar Radiation Research Laboratory, NREL has been measuring solar radiation and meteorological data since 1984. National Bioenergy Center The National Bioenergy Center (NBC) was established in October 2000. "The National Bioenergy Center is composed of four technical groups and a technical lead for partnership development with industry. Partnership development includes work performed at NREL under Cooperative Research and Development Agreements (CRADA), Technical Service Agreements (TSA), Analytical Service Agreements (ASA), and Work for Others (WFO) contract research for DOE's industry partners." The main focus of the research is to convert biomass into biofuels/biochemical intermediates via both biochemical and thermochemical processes. The National Bioenergy Center is currently divided into certain technology and research areas: Applied Science Catalysis and Thermochemical Sciences and Engineering R&D Biochemical Process R&D Biorefinery Analysis Some of the current projects are in the following areas: Biomass characteristics Biochemical conversion Thermochemical conversion Chemical and catalyst science Integrated biorefinery processes Microalgal biofuels Biomass process and sustainability analysis The Integrated Biorefinery Research Facility (IBRF) houses multiple pilot-scale process trains for converting biomass to various liquid fuels at a rate of 450–900 kg (0.5–1 ton) per day of dry biomass. Unit operations include feedstock washing and milling, pretreatment, enzymatic hydrolysis, fermentation, distillation, and solid-liquid separation. The heart of the Thermochemical Users Facility (TCUF) is the 0.5-metric-ton-per-day Thermochemical Process Development Unit (TCPDU), which can be operated in either a pyrolysis or gasification mode. National Wind Technology Center NREL has produced many technologies that impact the wind industry at a global level. The National Wind Technology Center (NWTC) is home of 20 patents and has created software such as (FAST), simulation software that is used to model wind turbines. The NWTC is located on NREL's Flatirons Campus, which is at the base of the foothills just south of Boulder, Colorado. The campus comprises field test sites, test laboratories, industrial high-bay work areas, machine shops, electronics and instrumentation laboratories, and office areas. The NWTC is also home to NREL's Distributed Energy Resources Test Facility (DERTF). The DERTF is