Register for the EDGE Technical Workshop at Greenbuild India

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Registration is now open for Greenbuild India. Held annually in the United States since 2002, the Greenbuild International Conference and Expo is the world’s largest conference and expo dedicated to green building. This November, the award-winning event will be held for the first time in Mumbai, India.

EDGE and resource efficiency in buildings will be front and center at Greenbuild India, where GBCI is offering its full-day EDGE Technical Workshop. This workshop helps EDGE project teams understand the EDGE standard, use the software application and navigate the certification process. It also prepares EDGE Expert candidates to take the EDGE exam. 

This is the last in-person EDGE Technical Workshop that GBCI will be offering in India this year, so register now to claim your seat.

The EDGE Technical Workshop is not included in the conference pass for Greenbuild India. After the workshop, attend the conference for two days of speakers, networking opportunities, an expo hall featuring the latest green building products and technologie, and tours of Mumbai’s green buildings.

EDGE Technical Workshop

Date: November 1, 2016, 9 a.m.–6 p.m.
GBCI continuing education credit: 8 hours
Cost: 7,500 INR (early bird price, for registrations before Sept. 8)

Please email GBCI with any questions.

Register to attend the workshop

Sol Voltaics nets record funding to commercialize its solar panel boosting tech

sol voltaics nanowire

Sol Voltaics has closed a record funding round of $21.3 million, the largest finance raise for a European solar technology company since 2015. The new finance will be used to accelerate commercialization of its highly anticipated solar efficiency boosting technology, SolFilm which the company claims will increase conventional solar panel efficiencies by up to 50%.

SolFilm, a patented, low cost thin-film which is comprised of billions of highly efficient Gallium Arsenide (GaAs) nanowires, enables solar panel manufacturers to reach efficiencies of up to 27 percent when integrated as a tandem-junction module. Having recently confirmed the successful manufacture of nanowires using their low-cost process Aerotaxy, Sol Voltaics is now in the final stages of technology optimization, with anticipated samples of its SolFilm being sent to partners by the end of 2018.

“This latest round of finance gives us the critical capital required to commercialize our efficiency boosting technology for the solar market,” said Erik Smith, Sol Voltaics CEO. “Having achieved our final major technology milestone with Aerotaxy earlier this year, we are now fully focused on reaching mass production of SolFilm. I’d like to thank our investors, both existing and new, for backing our vision and helping bring this revolutionary technology to the mass market.”

The latest funding features new investment from Norwegian company Watrium AS, alongside previous investors Kagra Gruppen AS, Nordic VC firm Industrifonden, FAM AB, Nano Future Invest, Blue Marlin AB and Teknoinvest AS. The investment brings total funding raised to $38m in the past 12 months, following the company’s $17m funding round in 2016.

— Solar Builder magazine

Tigo solidifies rapid shutdown certified partnerships with more than 35 inverter types

tigo ts4 mlpe rapid shutdown

Tigo, pioneer of the smart modular Flex MLPE platform, has boosted its portfolio of international inverter partnerships to more than 35 inverter-types that are now Rapid Shutdown certified by Underwriters Laboratories (UL).

SMA was first to adopt Tigo’s portfolio of Rapid Shutdown certified offerings. Additional commercial and residential inverter suppliers that also received the UL certification include:

  • ABB,
  • Fronius,
  • Ginlong Solis,
  • Kaco,
  • Sungrow,
  • Yaskawa – Solectria Solar,
  • and more.

Inverters ranging from 3kW to 30kW are certified with Tigo’s TS4 optimizers with UHD-Core technology and are shipping now. This brings the largest Rapid Shutdown solution offering with the widest adoption to market – providing Installers, EPC, and Owners the most cost-effective response to the NEC 2014 & 2017 code requirements.

“Customers looking for cost effective solutions that comply with strict safety regulations have a solution available. With Tigo’s UL Certification, our partners are exceeding these standards,” said Zvi Alon, CEO of Tigo. “We are excited to add more brands to the most diverse portfolio of approved partners in the industry.”

According to UL’s certification Rapid Shutdown Systems requirements for Distributed Generation Power System Equipment, the rapid shutdown protection is intended to reduce potential hazards and limit exposure to energized PV wiring and equipment to allow emergency first responders to perform work outside the energized area of the PV array. Also, these high reliability PV rapid shutdown systems have a higher system fault tolerance and reliability to perform their intended function under foreseeable single-point component and system failures. Only systems found to comply with these additional functional safety requirements are marked “High Reliability PV Rapid Shutdown System.”

— Solar Builder magazine

New 4-in-1 solar module safety analyzer released by Extech

Extech Electronic Co. (EEC) is releasing the world’s first four-in-one photovoltaic (PV) module safety analyzer. This new EPV-500 offers a complete one-step automatic testing solution to perform DC withstand, DC ground bond, insulation resistance, and potential induced degradation(PID) together in a single unit, delivering superior efficiency, performance, and reliability for testing PV panels in both laboratories and manufacturing environments.

Extech Electronic

“With growing demand on greener energy, PV manufactures are always looking for one machine that can perform multiple testing functions on solar panels, and now EEC introduces the world’s first four-in-one PV safety analyzer to optimize operational efficiencies,” said EEC General Manager Brian Chen. “We strive to give our customers the best solarized solutions as well as outstanding features that meet all the latest PV standards and regulations.”

Performance, Safety and Expandability

Keeping pace with the current market trend in solar panel system voltage arrays that deliver up to 1,500 Vdc, the EPV-500 series can perform Hipot tests outputting at 8,000 Vdc to meet the required safety regulations for large voltage arrays. Designed with maximum negative 2,000 Vdc output voltage meeting the PID testing regulation, and further ensures user’s safety when only leaving the power terminal electrically charged.

The EPV-500 series provides multiple connection interfaces for expandability and compatibility with existing systems, including PLC, USB, RS-232, GPIB, and Ethernet, allowing remote management of operations via a central computer.

Easy to Use Operation

One of the major factors contributing to manufacturing efficiency is user operating fluency. The EPV-500 series provides a 4.3” color touchscreen and with intuitive system interface that allows users to take full control. The ample system memory permits storage of up to 2,000 sets of testing conditions, an outstanding feature for saving and recalling data during laboratory or production management. Additionally, the strict account management feature sets multiple levels of user authority for secure and straightforward operations.

— Solar Builder magazine

Penn State researchers say new concentrated PV system beats silicon solar cells

concentrated solar cells

One message delivered at Intersolar last week was the need for even better, more efficient technology to really affect change over the next few decades. Researchers at Penn State think they are on the path to one such breakthrough, with a concentrating photovoltaic system with embedded microtracking that they say can produce over 50 percent more energy per day than standard silicon solar cells in a head-to-head competition. A team of engineers field tested a prototype unit over two sunny days last fall.

“Solar cells used to be expensive, but now they’re getting really cheap,” said Chris Giebink, Charles K. Etner Assistant Professor of Electrical Engineering, Penn State. “As a result, the solar cell is no longer the dominant cost of the energy it produces. The majority of the cost increasingly lies in everything else — the inverter, installation labor, permitting fees, etc. — all the stuff we used to neglect.”

This changing economic landscape has put a premium on high efficiency. In contrast to silicon solar panels, which currently dominate the market at 15 to 20 percent efficiency, concentrating photovoltaics focus sunlight onto smaller, but much more efficient solar cells like those used on satellites, to enable overall efficiencies of 35 to 40 percent. Current CPV systems are large — the size of billboards — and have to rotate to track the sun during the day. These systems work well in open fields with abundant space and lots of direct sun.

How is this setup?

“What we’re trying to do is create a high-efficiency CPV system in the form factor of a traditional silicon solar panel,” said Giebink.

To do this, the researchers embed tiny multi-junction solar cells, roughly half a millimeter square, into a sheet of glass that slides between a pair of plastic lenslet arrays. The whole arrangement is about two centimeters thick and tracking is done by sliding the sheet of solar cells laterally between the lenslet array while the panel remains fixed on the roof. An entire day’s worth of tracking requires about one centimeter of movement, which is practically imperceptible.

Why high-efficiency modules are the best value for installers, homeowners

“Our goal in these recent experiments was to demonstrate the technical feasibility of such a system,” said Giebink. “We put together a prototype with a single microcell and a pair of lenses that concentrated sunlight more than 600 times, took it outdoors and had it automatically track the sun over the course of an entire day.”

Because the team needed to know exactly how much direct and diffuse sunlight there was during the test, they set up at the Russell E. Larson Agricultural Research Center at Penn State where there is a National Oceanic and Atmospheric Administration Surface Radiation monitoring site. Graduate students Jared Price and Alex Grede worked together with post-doctoral researcher Baomin Wang to test the system over two sunny days from dawn to dusk right alongside a commercial silicon solar cell.

The CPV system reached 30 percent efficiency, in contrast to the 17 percent efficiency of the silicon cell. All together over the entire day, the CPV system produced 54 percent more energy than the silicon and could have reached 73 percent if microcell heating from the intense sunlight were avoided.

According to Giebink, this embedded tracking CPV technology would be perfect for places with lots of direct sunlight, such as the southwestern U.S. or Australia.

Giebink notes that major challenges still lie ahead in scaling the system to larger areas and proving that it can operate reliably over the long term, but he remains optimistic.

“With the right engineering, we’re looking at a step-change in efficiency that could be useful in applications ranging from rooftops to electric vehicles — really anywhere it’s important to generate a lot of solar power from a limited area.”


— Solar Builder magazine