Tags from CORE1

Solar Spotlight: Naghtaneqed School Graduates to a Cleaner, Quieter Campus

Hakai Energy Solutions Delivers a Solar Hybrid Integration Project for Students in Canada!

solar school projects

The Naghtaneqed Elementary School sits nestled in the expansive Nemaiah Valley, three hours southwest of Williams Lake, British Columbia. In this First Nations reserve and ranching community, the school has—until now—been fully powered by diesel electric gensets for more than 30 years.

High operating costs associated with fuel purchase and ongoing maintenance motivated the district to explore solar power. The reliance on diesel also introduced pollution and noise to the campus. Thanks to clean, renewable energy, those issues are drastically reduced concerns today. The Cariboo-Chilcotin district hired Hakai Energy Solutions to install a solar project expected to save the school $50,000 CAD, roughly $37,000 USD, in annual diesel costs.

In July 2019, the school district invested in a hybrid energy system that integrated solar energy production, advanced energy storage and an expandable inverter platform. Utilizing 140 high-output solar panels, 118 kilowatt-hours of lithium energy storage and SMA inverter technology, this system was designed to offset diesel consumption by reducing generator operation by 6,900 hours each year.

Impressively, Naghtaneqed School is expected to recoup its investment in roughly seven years through reduced fuel consumption of approximately 38,400 L every year, plus generator maintenance and replacement cost avoidance. Not to mention, emissions reductions are also estimated at 2,534,000 kilograms of CO2 over the 25-year lifespan of the system, equivalent to 19,500,000 kilometers driven by a car.

“We’ve used SMA products from day one, and they’re simply unbeatable in terms of reliability, functionality and serviceability,” said Jason Jackson, energy system designer with Hakai Energy Solutions. “Working in remote areas makes product selection vitally important. Over the years, we’ve worked with every major manufacturer of inverters, and these experiences have only reinforced our confidence in SMA products. Every employee in this company—from the installation crews to the finance department—is on the same page. From a team perspective, SMA offers the most dependable and bankable suite of products on the market.”

In November 2019, the solar hybrid integration project was completed at the school. The total size is 57.6-kilowatt PV with 120 kwh lithium (LiFePo)-based energy storage and features 45 and 60 kW gensets. Every year, an estimated 72 megawatt-hours will be generated. What kind of impact does that have on energy consumption? A full 80% of the school’s energy will now come from the sun.

This PV array includes Longi Solar72 cell Mono bi-facial solar panels, six Sunny Islands, 1 SMA multi-cluster box and one 50 kW SMA CORE1. The district received funding for the entire project through the Ministry of Education’s program for carbon neutral funding via a community improvement award from Clean Energy B.C. for the project.

“This project has helped us meet our goal of reducing our environmental impact and improved the quality of experiences students have on our campus,” said Alex Telford, manager of facilities and transportation for the Cariboo-Chilcotin district. “When you factor in the cost savings, it’s a win-win-win!”

Visit our photo gallery to enjoy more pictures of this project!

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SMA Solar Academy and SMA Sunbelt Partner to Bring In-Depth Trainings to Florida Installers!

SMA will host three days of training at the Florida Solar Energy Center in Cocoa, Florida from February 18-20. If you are in the Southeast and are interested in learning about residential, commercial and off-grid solar and storage, then you don’t want to miss these seminars with the best resources in the industry!

SMA Solar Academy Training

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Interconnect Your Residential and Commercial Projects Faster with Less Risk

Don’t get left behind when mandatory compliance of California Rule 21 Phase 2 and 3 goes into effect on March 22, 2020.

SMa commercial solar project. View from top.

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Solar Spotlight: Sustainability is at the CORE of Spraying Systems’ Values and Business Strategies

GRNE Solar recently installed a new solar system powered by SMA Sunny Tripower CORE1 inverters and monitored with the SMA Data Manager M at the headquarters of Spraying Systems, a spray technology company in Illinois.

Solar system featuring SMA Sunny Tripower CORE1 inverters at Spraying Systems

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The Top Three Reasons Why Installers Love the CORE1 Commercial Solution from SMA!

Since its introduction, SMA’s Sunny Tripower CORE1 has been taking the commercial market by storm. Now with expanded features and functions, installers have even more reasons to appreciate this truly unique commercial PV solution. We compiled the top three reasons that have installers shouting their praise from the rooftop. 

Sunny Tripower CORE1

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Solar Spotlight: Pistachio and Almond Grower Invests in Solar for a Harvest of Savings

The ground-mounted system installed by JKB Energy located in Kettleman City, California, is the second largest net-metered solar project in PG&E territory and has a projected annual savings of $435,490.

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Solar Spotlight: The Sun Now Powers the Hottest New Movies, in the Coolest Environment at the Mary Pickford Theater!

The iconic, state-of-the art Mary Pickford Theatre in Cathedral City, California, now includes a self-sustaining renewable energy plant. SMA inverters are powering the system engineered and constructed by Aeterna Energy.

Mary Pickford Theatre

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Energy Reborn: Live the SMA Experience at SPI

Visit our booths – outdoors at the Grand Plaza and indoors at the Smart Energy Microgrid Marketplace – and experience how SMA is leading the evolution of renewable energy with major advancements in solar technology.

SMA @ SPI

 

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Part 2: Commercial PV System Sizing and Design with SMA CORE1 Inverter

PART II

In part one, we introduced the features of SMA’s free sizing and simulation tool and outlined how the CORE1 is designed to provide easier installation, commissioning and monitoring. In part two, we will discuss the benefits of the CORE1 for weather data integration as well as the advantages of using Sunny Design.

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For weather data integration, the CORE1 communications card allows the installation of a sensor module that can integrate temperature, irradiance, and wind speed sensors, reducing the amount of connections, cable runs, and additional external monitoring devices needed.

If we look at the East/West configuration of the array, it is important to account for any possible shading effects. Fortunately, SMA inverters include the Opti Trac Global Peak algorithm, which reduces the effects of shade on the system by allowing the inverters to optimize the Maximum Power Point Tracking of the PV array. Additionally with the CORE1, it is possible to monitor independent strings in order to check for any differences in energy production on each of the channels of the inverter. As it occurs in this case where we have strings of similar size, it is possible to configure two groups (East and West) to compare currents and identify any failures or potential problems on the strings.

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One nice feature of Sunny Design is the possibility of doing a side-by-side comparison of design options. In the image above, we can see the results and overview of both options. Although for alternative 1 there is a higher AC capacity by having two 30kW inverters, the annual energy yield and the performance ratio of both designs is almost the same. The CORE 1 design has a higher DC/AC ratio.

Depending on the characteristics and conditions of the installation site, it might make more sense to adopt the alternative one with two Sunny Tripower TL-US inverters. Even though these devices do not have the high integration of the CORE 1, they are lighter, more flexible, and allow installations in high-pitched roofs.

The last step in the design process involves selecting the option that makes the economic sense. Fortunately, Sunny Design offers the possibility of customizing values and settings to perform a profitability analysis, so that costs and payback periods can be visualized. This enables an integrator to make the right decision not only based on technical specifications, but also on financial metrics.

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In summary, if you want to complete successfully a PV project on time, there is no need to cut corners, just make sure that you have the best tools for the job. You can count on SMA, we have the solution for any PV project offering the best support and providing the answers, you need every step of the way.

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Part 1: Commercial PV System Sizing and Design with SMA CORE1 Inverter

PART I

In view of the increasing number of PV commercial installations across the U.S., installers and contractors find themselves under constant pressure to complete more projects in less time. In order to achieve this, they must streamline the installation process while maintaining safety and quality standards.

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The first step of the process starts with design. While most of the time the objective is to maximize roof space in order to fit as many modules as possible, it is essential to plan ahead for service and maintenance, leaving enough space between strings of modules in order to allow easy access. Once the system layout has been determined, the equipment for the project must be selected. When choosing the right inverter for the job, one must consider more than just technical specifications. It is also important to keep he installation process in mind, under what conditions the inverters will be working, and all other major requirements of a commercial PV plant, including; monitoring systems, weather stations, string aggregation, shade mitigation, racking structures, and additional BOS.

When considering all these factors it is often difficult to find an inverter that can meet all of the required metrics for the integration. Fortunately, we have the tools and the solutions to help you design a successful project that can be carried out and completed within a tight deadline.

First, SMA’s free sizing and simulation tool, Sunny Design, allows you to size systems correctly by matching SMA inverters with PV curves, and to compare design alternatives with different inverters in order to be able to make the right decision not only based on energy yield but also on economics and architectures.

As an example, we sized a 67-kWp rooftop commercial system with Sunny Design. We designed two alternatives for this project; one with the Sunny Tripower TL-US and one with the Sunny Tripower CORE1 – the latest addition to our commercial solutions portfolio.  For this project, we designed a roof-mounted array with an East/West configuration and a 15o inclination.

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When used in the automatic design mode, Sunny Design will do all the calculations and can offer options based on profitability or energy yield. For the first alternative we have selected a design with two STP 30000 TL-US inverters. The suggested configuration for the array has three strings in parallel connected to each input of the inverter, meaning that we will need to incorporate DC combiner boxes in order bring the six strings into the two MPPT channels of the STP inverters. The results of the simulation, including current and voltage values, can be seen below:

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It is important to note the 1.1 DC/AC ratio of the design. High DC/AC ratios account for module degradation and potential higher energy yields during a calendar year.

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The higher integration of the CORE1 allows you to connect up to 12 strings to the inverter eliminating the need for additional BOS like DC combiner boxes. Thanks to its higher power rating of 50kW it is possible to reduce the number of inverters and the number of connections, improving the overall installation time.

When considering the specification of the PV plant it is clear that the advanced features of the CORE 1 align better with the requirements of the project.

Multiple communication channels allow for easier monitoring and commissioning. Although best practices for monitoring involve using a physical communications channel like Speedwire (SMA’s Ethernet based protocol) because of its reliability and higher speeds, WLAN is the better option when commissioning the inverter on site. It will allow direct communication between the inverter and any smart device that can connect to a wireless network and access the WebUI through a web browser.

In part two of our series, we will outline the benefits of the CORE1 for weather data integration as well as the advantages of using Sunny Design.

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Are you Ready to Achieve Compliance of California Rule 21 Reactive Power Priority Requirement?

Tech Tip Sunny Boy for CA 21

CA Rule 21 Phase1 new requirements will include a Reactive Power Priority setting starting Thursday, July 26.  UL has certified SMA inverters as compliant with this new regulation.

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Solar Spotlight: Dairy-Mix, Inc. Finds a Sweet Deal With Solar

SMA inverters are powering the 201.75 kW rooftop solar array installed by Advanced Green Technologies and can supply up to 25 percent of the Dairy-Mix processing plant’s energy needs.

Diary-Mix,Inc.

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