The NEC “round-up” rule of 240.4(B) can yield significant cost savings during the solar energy design and installation process. It...

Over the last decade, solar prices have declined 54 percent, allowing the solar market to experience an annual average growth rate of 24...

Q&A with Castillo Engineering Castillo Engineering has provided its design and engineering expertise in Illinois and New York for over...

By Joe Jancauskas, Senior Electrical Engineer at Castillo Engineering First published in 1897, the National Electric Code (NEC) has been...

Company grows sales by 60 percent compared to prior year Castillo Engineering announced that it had completed its best year on record...

Unlike BESS (Battery Energy Storage Systems), solar energy systems come in a wide variety of visually apparent, unique flavors: fixed...

By Joe Jancauskas, Senior Electrical Engineer at Castillo Engineering While moderately oversizing your solar panel cables can ensure fire...

With the price of lithium battery cell prices having fallen by 97% over the past three decades, and standalone utility-scale storage...

By Joe Jancauskas, Senior Electrical Engineer at Castillo Engineering Second to only PV module ratings, nothing changes faster than...

The solar industry is often referred to as the “solar coaster” due to its seemingly constant changes as permitting requirements...

How You Can Reduce Costs & Improve Performance at Any Stage of a Solar Project While “project optimization” and “value engineering” are...