John Berdner has more than 25 years of experience in the design, manufacture and use of PV equipment and systems. As the founder and president of SMA America, John was integral in launching the first UL-listed grid-direct string inverters with 600 Vdc source circuits, which...
In February 2010, Pro-Tech Energy Solutions and Whitman were contracted by Solare Development Group on behalf of National Freight Industries Solar to implement the design, engineering and installation of a 1.32 MW PV project in Cherry Hill, New Jersey, on the company’s 7-...
The solar thermal system at Alta Torre Senior Housing was added after the building had been designed. Unfortunately, this is an all-too-typical scenario for solar thermal installations, and it inevitably leads to “hide the big tank” meetings.
Design & Installation
Firefighters have a dangerous job. Running into a burning building instead of out of it might seem to be the height of risky behavior. In reality, though, what appears from the street to be a heroic and reckless assault on the flames is really an intricately orchestrated...
Business & Finance
I became a solar professional after a successful career in the computer industry in Silicon Valley. As a freshly minted young software engineer, I soon realized that the Silicon Valley culture was all about the possible. We were used to overcoming obstacles and expected few...
The ability to accurately predict power delivery over the course of time is of vital importance to the growth of the PV industry. Two key cost drivers are the efficiency with which sunlight is converted into power and how this relationship changes over time. An accurate...
Three new transformerless inverters from SMA America have received UL listing for use in North America. This marks the first time that Underwriters Laboratories tested this topology since UL 1741 was revised to include specific transformerless inverter requirements.
Bryce Fastener, a manufacturer of tamperproof hardware, has released the Penta Nut fastener for PV installations. The patented design repels other commonly available security bit tips and locking pliers. The 316 stainless steel nuts are available from 6/32 in. up to 7/8 in...
Ergodyne has released a line of cold-weather gloves designed specifically for use on construction sites. You can wear the convertible glove as mittens or flip the top to expose a half-finger glove. The top is secured in place with a hook and loop, keeping your fingers free...
Specifically designed for the PV industry, the new line of HellermannTytons Solar E-Clips offer new wire management options for integrators. The edge clips are suitable for module frames with thicknesses ranging from 16 mm.
Design & Installation
The US solar market is far from monolithic, and this diversity calls for diverse business models. Given this situation, it is no surprise that solar companies take different approaches to engineering services. For this article, we reached out to engineering service...
Yaskawa–Solectria Solar, the largest commercial inverter manufacturer in the US, has introduced two new made-in-America string inverter lines, the XGI 1000 and XGI 1500.
SMA announced two new power classes for its utility-scale storage product line. Sunny Central Storage inverters are compatible with a range of battery technologies.
SolarBOS introduced its AC Combiner product family in September 2016 and has continued to refine and expand the line’s functionality and available options.