Inverters and eBOS

Technology trends and installation and servicing advice for solar PV string inverters, central inverters, microinverters and DC optimizers.

CPS 100 and 120

Pictured: CPS 120-kW

This month, our inverter coverage is sponsored by CPS America. With easy access to real, knowledgeable people, stocked parts, 24-hour RMA turnaround, and exceptional diagnostic hardware, CPS America is committed to full life-cycle service and support. Learn more here.

Featured Webinar in March: Rapid Shutdown Showcase: A review of commercial solar RSD strategies and solutions

2020 Inverter Buyer’s Guide now available


Beyond code: Safety advice for installing solar PV DC connectors and cables

Beyond code: Safety advice for installing solar PV DC connectors and cables

March 19, 2020 at 9:00 am 0 comments

  As multiple data collection shows, DC cabling is 1% of the total project cost, but it is also the number one source of technical failures in PV projects and greatly affects the LCOE and safety of your project. Stäubli would like to share our 20 years of experience inRead More

Rapid Shutdown NEC 2017: There are more options than you think

Rapid Shutdown NEC 2017: There are more options than you think

March 18, 2020 at 10:54 am 0 comments

With the provisions of National Electrical Code (NEC) 2017 article 690.12 now being applied in over 30 states and growing (and which we re-examined this week), many suppliers and contractors are struggling to determine which Rapid Shutdown Devices (RSD) on the market are compliant and compatible with the modules andRead More

Tigo Energy completes transition from TSA-R to TS4-A platform with latest safety add-on

Tigo Energy completes transition from TSA-R to TS4-A platform with latest safety add-on

March 17, 2020 at 1:18 pm 0 comments

When one Tigo Energy update is announced (like this monitoring platform upgrade last week), there are always more to follow. Here’s today’s addition to the add-on TS4 Platform: the TS4-A-S. This add-on safety solution is a module-level power electronic (MLPE) multivendor UL-system-certified solution for rapid shutdown. Tigo’s safety solution compliesRead More

Peak Protection: Right-size overcurrent protection to ensure equipment reliability

Peak Protection: Right-size overcurrent protection to ensure equipment reliability

March 17, 2020 at 12:00 pm 0 comments

The use of solar string inverters impacts AC collection systems across commercial, industrial and utility-scale solar PV projects. If peak solar project operating conditions are ignored when sizing the AC collection system, it can lead to equipment overheating, nuisance tripping, system failure and reduced power generation. Adding complexity to theRead More

Solar-Log, Kitu Systems collaborate on solar plant solutions to comply with California Rule 21 mandate

Solar-Log, Kitu Systems collaborate on solar plant solutions to comply with California Rule 21 mandate

March 16, 2020 at 3:42 pm 0 comments

Solar-Log and Kitu Systems are collaborating to offer expert solar plant monitoring, control and communication solutions that meet the new California’s Rule 21 mandate. Starting on March 22, all smart inverters deployed with solar and energy storage installations in California are required to be capable of communications with the utilityRead More

Rapid Shutdown Rewind: Let’s re-examine the impact of NEC 2017 on rooftop solar PV safety and installer choice

Rapid Shutdown Rewind: Let’s re-examine the impact of NEC 2017 on rooftop solar PV safety and installer choice

March 16, 2020 at 10:00 am 3 comments

The Solar+ Decade is starting off as the module-level power electronics (MLPE) decade. In its most recent U.S. PV Leaderboard, Wood Mackenzie reports SolarEdge inverters and optimizers were used on 60.5 percent of U.S. residential installations through the first three quarters of 2019, with Enphase a distant second at 19.2Read More

HellermanTyton's Solar Locking Clamp.

Beyond code: The effects of cost cutting in racking, modules on wire management

March 16, 2020 at 8:00 am 0 comments

When we talk about wire management and the code, it is easy to meet the basics of the NEC: neat and orderly, secured every 2 to 4 feet, proper bend radius, among others. But meeting the basics of the NEC tells a completely different story than having and executing aRead More

Snake Tray Solar Snake Max

A Breath of Free Air: Let’s talk about above-grade cable management for large ground mounts

March 6, 2020 at 1:47 pm 0 comments

Solar is the new “cash crop” for landowners who have had land for agricultural uses for generations, but now cannot yield traditional crops due to topsoil degradation. This type of site often consists of a few inches of topsoil below grade and afterwards a mix of shale rock, bedrock andRead More

Solar+storage upgrade: OutBack Power releases AC coupling firmware update for Skybox inverter

Solar+storage upgrade: OutBack Power releases AC coupling firmware update for Skybox inverter

March 4, 2020 at 9:13 am 3 comments

Faced with extreme weather events and unexpected and planned power outages, flexible energy storage solutions provide solar array owners with backup power from batteries when the lights go out. Recently, OutBack Power released an AC coupling firmware update to its SkyBox hybrid inverter. AC coupling is ideal when users haveRead More

Solar PV Inverter Buyer’s Guide 2020: 14 manufacturers tell us what’s new and what’s next

Solar PV Inverter Buyer’s Guide 2020: 14 manufacturers tell us what’s new and what’s next

March 3, 2020 at 8:00 am 1 comment

The Solar Builder annual Solar PV Inverter Buyer’s Guide is a chance to check in with all of the inverter manufacturers – from the market leaders to the up-and-comers – to get a sense of how their technology has evolved and what new products are now available for installation. ThisRead More