Details on CyboEnergy’s new line of AC-assisted off-grid inverters

CyboEnergy a developed a family of AC-assisted off-grid CyboInverters that can run almost any kind of AC loads including air-conditioners, refrigerators, EV chargers, pumps, motors, appliances, lights, fans, TV, computers, etc., without batteries. Let’s look at how.


CyboEnergy CEO George Cheng said this product allows a “battery-less off-grid solar system to start and run heavy loads 24/7 with consistent performance under DC and AC power variations and load changes. It is well suited for areas such as California, Hawaii, Europe, and Caribbean Islands where electricity is costly, yet on-grid solar is no longer welcomed due to grid capacity limitations.”

The above diagram illustrates an AC-assisted off-grid solar system with two AC-assisted off-grid CyboInverters, where a master unit is daisy-chained with a slave unit to form a 2.4-kW system. The system has 3 operating modes.

  1. In the grid AC only mode, the input AC from the grid can run the AC loads directly, when the inverters are not even turned on. For instance, when the inverters are down at night, the AC loads can operate normally with the grid power.
  2. In the solar only mode, the AC input port of the master inverter is not connected to the grid or the grid is down. In this case, the inverters will work like regular off-grid CyboInverters.
  3. In the combined power mode, the AC power generated by the inverter is combined with the input power from the grid, and the combined power runs the AC loads. In this case, solar production is maximized and grid power consumption is minimized. If there is more solar power than the AC loads need, the system will not consume any grid power, and the inverters will not send any power to the grid.

CyboEnergy is known for its battery-less off-grid solar inverters. Although these inverters can work most of the time under sunlight variations, the performance is still dependent on the available DC power. They will not operate in the evening and may not be able to run the loads on rainy or cloudy days. The new AC assisted off-grid CyboInverters overcome these challenges and will provide good performance under DC and AC power variations and load changes.

The following table lists the AC assisted off-grid CyboInverters with different AC standard around the world. CyboEnergy is taking pre-orders for these products and expects to ship during the 4th quarter of 2018.

Cyboenergy inverter specs

The AC-assisted off-grid CyboInverters include the following features and benefits: (1) can run AC loads with solar power only, grid power only, or combined power; (2) require no batteries; (3) have panel-level MPPT to maximize solar production; (4) can start heavy loads with assisted AC power and run the loads with only solar power; (5) avoid all the headaches of an on-grid solar system, and (6) are easy to install with great ROI.

In addition to manufacturing and servicing CyboInverters on the global market, CyboEnergy also offers technology licensing, assembly, or private label opportunities to its strategic partners for certain market segments and geographical areas.

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— Solar Builder magazine

Fronius targets new competitive advantages for solar installers with Smart Solution

Fronius symo

As solar markets across the United States are getting more established, differentiation becomes increasingly important for solar installers. This is why inverter manufacturer Fronius is introducing a wide variety of new solar solutions at this year’s Solar Power International (SPI) trade show in Anaheim (Booth #1538) that are aimed at helping solar installers provide better solutions to home owners, businesses and other solar buyers.

The Fronius Smart Solution, the first adaptive systems design for solar, is designed to do just that: adapt to the specific needs of any system buyer. Installers have the ability to choose the components needed and optimize the entire system while maintaining a minimal design. This next generation of solar systems enables installers to offer tailor-fit solutions that are optimized between performance and cost, making solar more accessible and ready for mainstream markets.

Installer as energy consultant

As part of the Fronius Smart Solution, the online portal Fronius Solar.web allows installers and system owners to monitor their solar system and analyze energy consumption. This helps the installer to turn into an energy consultant for system owners. Based on the analysis, they can offer specific products and services to individual customers over the system’s lifetime – making a solar sale the start of a relationship, not just the closing of a sale.

RELATED: Keys to inverter service: Data granularity, remote updates, customer relations

With insights from the Fronius Solar.web portal, support from the online troubleshooting tool Fronius SOS and the field-serviceability of Fronius inverters, certified installers (Fronius Solutions Providers) are equipped to provide outstanding operation and maintenance services. The Fronius Solutions Provider program is unique to the industry and supports installers not only with technical training but also sales training, marketing support and more. Fronius will host Fronius Solutions Providers at the booth, so attendees can hear from their experience first-hand.

Commercial communication

For commercial rooftop applications, which are usually complex and environmentally demanding for solar installations, Fronius exhibits the Fronius Rooftop Solution. This cost-effective solution for commercial rooftops was launched earlier this year and helps to overcome the typical challenges of commercial rooftops, such as high ambient temperatures, obstructions or operation & maintenance (O&M) challenges.

The new Fronius Symo Advanced three-phase inverters provide additional value for states with Module Level Shutdown requirements. The integrated Power Line Communication (PLC) transmitter based on the SunSpec Communication Signal for Rapid Shutdown allows in principle for plug & play connection with SunSpec based module electronics. In a first step, the Tigo TS4-F cover is available. This eliminates the need for any additional communication hardware and provides the most cost-effective option for code compliance.

In addition to new products and services, Fronius will also be giving away a branded bicycle. Attendees are welcome to test out the bike and enter to win one of their own – Fronius will give away one bike per day.

— Solar Builder magazine

Meet SMA’s Sunny Highpower PEAK3 inverter — a scalable 1,500 Vdc option for large-scale projects


SMA America‘s new Sunny Highpower PEAK3 inverter is now available for ordering in North America and will begin shipping in the first quarter of 2019. Designed for larger distributed generation and utility-scale projects, the Sunny Highpower PEAK3 can be used as modular building block for deveoplers in need of a scalable 1,500 VDC solution for large-scale ground mounted solar installations.

“The utility-scale PV market is evolving and demanding more flexibility and scalability,” said Nick Morbach, executive vice president of SMA’s Residential and Commercial business unit. “At the same time, our customers are looking for more cost-effective solutions for behind-the-meter distributed generation projects. The Sunny Highpower PEAK3 delivers on both of these needs. SMA continues to develop industry-leading technology that will provide its customers with more options for their PV projects.”

RELATED: Power factor boost: Make sure to maximize revenue in design, data monitoring

The Sunny Highpower PEAK3 is available in two models. The 125 kW / 480 VAC version can be used for interconnection to standard behind-the-meter commercial services, and the 150 kW / 600 VAC version offers a cost-effective solution for large projects with dedicated interconnection. The Sunny Highpower PEAK3 extends and complements SMA’s full portfolio of utility-scale solutions, which includes both kitted and turnkey central inverter solutions, allowing customers to choose the appropriate option based on their preferred system design, integration practices and specific project requirements.

Sunny Highpower PEAK3 inverters are eligible for the SMA Smart Connected service, which offers proactive monitoring and O&M support that reduces plant servicing time and costs while maximizing system uptime, energy yield and ROI. Plant communications with the inverter are supported by the SMA Data Manager powered by ennexOS, SMA’s cross-sector energy management platform, providing an optimized interface for plant commissioning as well as intelligent monitoring and controls required in large-scale PV systems.

For more info on the newest inverters on the market download our free 2018 Inverter Buyer’s Guide

— Solar Builder magazine

APsystems to debut four-module, 1,200 W microinverter at Solar Power International

AP Systems qs1

APsystems will unveil the QS1, a four-module, single-phase microinverter for residential applications at the Solar Power International trade show in Anaheim. A new design for APsystems, the company says the QS1 offers 75 percent faster installation time, while offering the highest peak output power and up to 3x faster transmission speed than conventional microinverters. A wider MPPT voltage range will result in a greater energy harvest for homeowners.

The first of its kind, the QS1 is designed to accommodate today’s high output PV panels, offer enhanced capability and significantly reduce installation time and costs while providing an unprecedented level of power with four independent MPPT per channel. Common AC trunk cabling with the dual-module YC600, offers flexible mix-and-match compatibility on the same circuit and with the same gateway (ECU-R or ECU-C).

The unit also builds on the successful APsystems line of multi-module microinverters, offering reduced logistics costs and integrated communication and connection features.

For more info on the newest inverters on the market download our free 2018 Inverter Buyer’s Guide

— Solar Builder magazine

OutBack Power, HiQ Solar expand deal to sell three-phase commercial string inverter

HiQ Outback Power

OutBack Power expanded its partnership with HiQ Solar to better serve current HiQ and ProHarvest customers, establish new markets and develop next generation products. Moving forward, all installer sales, EPC sales, and technical support activities will be managed by OutBack under the ProHarvest brand. HiQ Solar will focus on engineering and R&D efforts.

“The ProHarvest brand has been well received in the markets that OutBack serves which is why we are excited with the new structure of the expanded partnership,” said Brandon Provalenko, OutBack’s vice president of commercial operations. “This move allows us to leverage our sales and technical support expertise and introduce ProHarvest to a new set of customers while expanding the OutBack product line in a way that aligns with our strategy of providing a world-class customer experience.”

Since 2016 the companies have partnered to bring HiQ‘s plug and play TrueString 3-phase commercial solar inverters to the market, with OutBack selling the HiQ technology under the ProHarvest by OutBack Power brand.

“Over the past nine years HiQ has grown past the start-up stage and now has found a great partner to take us to the next level. Our goal is to get our technology into the hands of as many customers as possible, both in solar and solar plus storage,” said Rob Howard, HiQ Solar’s CEO.

Once dominated by large, but inflexible, central inverters, the trend today is to use many string inverters which are easier to install and provide system redundancy that protects against full system failure caused by failure of a single component. ProHarvest inverters combine the best of all worlds; economics of a large string inverter, with the array-mounting and form-factor of a microinverter. With this technology, installers have a “plug and play” system architecture to work with.

The ProHarvest line includes a 480 volt and 208 volt string inverters, AC splice box and communications gateway.

— Solar Builder magazine