Education

HTTP_CONNECTION:Keep-Alive HTTP_ACCEPT:text/html,image/png,image/jpeg,image/pjpeg,image/x-xbitmap,image/svg+xml,image/gif;q=0.9,*/*;q=0.1 HTTP_ACCEPT_ENCODING:gzip, identity;q=0.9 HTTP_ACCEPT_LANGUAGE:en, * HTTP_HOST:api.dev.ecatonline.co.za HTTP_MAX_FORWARDS:10 HTTP_REFERER:http://www.magnet.co.za/solutions-solar/education.html HTTP_USER_AGENT:Mozilla/4.5 (compatible; HTTrack 3.0x; Windows 98) HTTP_X_FORWARDED_HOST:www.magnet.co.za HTTP_X_LOOKLIKE_URL:/solutions-solar/news.html HTTP_X_ORIGINAL_URL:/solutions-solar/education.html?page=7 HTTP_X_FORWARDED_FOR:169.0.58.185:54479 HTTP_X_ARR_SSL:3072|256|C=US, O=Let's Encrypt, CN=R3|CN=magnet.co.za HTTP_X_ARR_LOG_ID:453ac333-ad50-41b6-9a2c-90f59f8660f7

[ { "title": "READ | Is your roof suitable for solar panels? ", "nid": "445", "body": "\u003Cp\u003E\u003Ca href=\u0022mailto:hello@magnetgroup.co.za\u0022\u003E\u003Cimg alt=\u0022roof\u0022 data-entity-type=\u0022file\u0022 data-entity-uuid=\u00229e62cd7a-2346-4726-9c77-a5720c3cd588\u0022 src=\u0022/cms/drupal8-magnetgroup/sites/default/files/inline-images/home_0.png\u0022 class=\u0022align-center\u0022 /\u003E\u003C/a\u003E\u003C/p\u003E\n\u003Cp\u003E\u00A0\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003EIs your roof suitable for solar panels?\u00A0\u003C/strong\u003E\u003Cbr /\u003E\nSolar has been on your mind for a while, and you\u0027re finally ready to invest in a system... But, have you considered whether or not your roof is suitable for panels?\u003C/p\u003E\n\u003Cp\u003EBelieve it or not, but not all roofs are ideal for solar. There is much to consider before installing a solar system \u2013 chief among these is\u00A0your roof.\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003EConsiderations to keep front of mind include:\u003C/strong\u003E\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli\u003E\u003Cstrong\u003EShade coverage\u003C/strong\u003E\u003Cbr /\u003E\n\tPanels are powered through light, so you definitely do not want any shade on the section of the roof where the panels will be installed.\u003Cbr /\u003E\n\t\u00A0\u003C/li\u003E\n\u003Cli\u003E\u003Cstrong\u003EThe complexity of your roof\u003C/strong\u003E\u003Cbr /\u003E\n\tThe more elaborate and unusual the roof (e.g. slate), the higher the cost of installation compared to a standard roof with an average tilt.\u003Cbr /\u003E\n\t\u00A0\u003C/li\u003E\n\u003Cli\u003E\u003Cstrong\u003EThe direction the roof faces\u003C/strong\u003E\u003Cbr /\u003E\n\tIdeally, the roof should be facing due north and tilting level with your latitude. However, this doesn\u2019t mean that east or west facing roofs can\u2019t also be suitable for solar panels. If your roof faces another direction, you can likely still see plenty of benefit from installing a solar array. East and west facing roofs will still see a good deal of energy generation throughout the course of the day. For example, an east facing roof will be exposed to sunlight in the morning whereas a west facing roof will take in more sunlight in the afternoon.\u003Cbr /\u003E\n\t\u00A0\u003C/li\u003E\n\u003Cli\u003E\u003Cstrong\u003EAge of the roof\u003C/strong\u003E\u003Cbr /\u003E\n\tOlder roofs bring to question their ability to support a solar array.\u00A0The design of your roof and its structural strength\u00A0determines the quantity of solar panels you\u2019re able to install. A structural assessment should be conducted to confirm your roof\u0027s load bearing capacity.\u003Cbr /\u003E\n\t\u00A0\u003C/li\u003E\n\u003Cli\u003E\u003Cstrong\u003EMaterials the roof is made of\u003C/strong\u003E\u003Cbr /\u003E\n\tConsider whether the roof material will be able to support the panels, especially if you want the panels to move (tracking systems).\n\u003Cp\u003E\n\tAn asbestos roof poses a serious health hazard, and most solar service providers will refuse to install a system on an asbestos roof. However, there are a few options that you can consider:\u003C/p\u003E\n\u003Cp\u003E\n\t1. Have specialists remove the asbestos and replace with a new corrugated steel roof. This may be expensive, but at least you will have a long-lasting, well-insulated roof to fit solar panels on.\u003C/p\u003E\n\u003Cp\u003E\n\t2. You could consider getting a ground mounted PV array \u2013 this requires sufficient land and planning permission, but will of course be an independent structure with no need to disturb the roof.\u003C/p\u003E\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp\u003E\u00A0\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003ESolar makes sense\u003C/strong\u003E\u003Cbr /\u003E\nAny which way you look at it, solar is still a viable investment.\u00A0Always consult with \u003Cstrong\u003E\u003Ca href=\u0022https://www.magnetgroup.co.za/solutions-solar/index.php\u0022\u003Ean expert \u003C/a\u003E\u003C/strong\u003Efor a professional opinion on a suitable solar installation for your roof.\u00A0Most importantly, remember to do your due diligence before investing in a solar system.\u003C/p\u003E\n\u003Cp\u003ENeed a solar solution for your home or facility? Click \u003Ca href=\u0022mailto:hello@magnetgroup.co.za\u0022\u003E\u003Cstrong\u003Ehere \u003C/strong\u003E\u003C/a\u003Eto chat to our solar experts\u2026\u003C/p\u003E\n\u003Cp\u003E\u00A0\u003C/p\u003E\n", "created": "Nov 2020", "terms": "Solar, Education" }, { "title": "READ | The Tier System for rating solar panel manufacturers", "nid": "442", "body": "\u003Cp\u003EIf you\u2019re serious about running an efficient household or commercial property, then it\u2019s imperative to select the right solar panels. Panels differ in manufacturing quality and output, and for most, the purchase decision hinges on finding a good balance between affordability and quality.\u003C/p\u003E\n\u003Cp\u003EPanels are not all created equal, making the choice of brand vital. Consider turning to tier 1 solar panel manufacturers first.\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003ETier 1 solar panel manufacturers are defined as those that:\u003C/strong\u003E\u003C/p\u003E\n\u003Cp\u003E\u2022 Have been producing solar panels for 5 years or more\u003C/p\u003E\n\u003Cp\u003E\u2022 Are either publicly listed on a stock exchange or have a strong and stable balance sheet\u003C/p\u003E\n\u003Cp\u003E\u2022 Have fully automated production facilities\u003C/p\u003E\n\u003Cp\u003E\u2022 Have a high degree of vertical integration i.e.: they manufacture panels from the ground up\u003C/p\u003E\n\u003Cp\u003E\u003Ca href=\u0022mailto:hello@magnetgroup.co.za\u0022\u003E\u003Cimg alt=\u0022The tier system\u0022 data-entity-type=\u0022file\u0022 data-entity-uuid=\u002270b3e8a1-ebfa-474d-ab9b-50804882fd2d\u0022 height=\u0022458\u0022 src=\u0022/cms/drupal8-magnetgroup/sites/default/files/inline-images/The%20Tier%20System-01_0.jpg\u0022 width=\u0022663\u0022 class=\u0022align-center\u0022 /\u003E\u003C/a\u003E\u003C/p\u003E\n\u003Cp\u003E\u00A0\u003C/p\u003E\n\u003Cp\u003EFluctuating quarterly, the term Tier-1 is a manufacturer endorsement which does not stay with the product for life. The tiered solar panel classification was first developed to show banks which panel manufacturers were legitimate and trustworthy, but it\u2019s evolved since. As such, the tier system should be used as a guideline and should never replace a good due-diligence process.\u003C/p\u003E\n\u003Cp\u003E\u003Ca href=\u0022https://www.youtube.com/watch?v=gBgS-FfF8Ew\u0026amp;feature=youtu.be\u0022\u003E\u003Cstrong\u003EWATCH \u003C/strong\u003E\u003C/a\u003Ea quick video to learn more about the tier system and solar panels.\u003C/p\u003E\n\u003Cp\u003EConsidering a solar or back-up power solution for your facility? Click \u003Ca href=\u0022mailto:hello@magnetgroup.co.za\u0022\u003E\u003Cstrong\u003Ehere \u003C/strong\u003E\u003C/a\u003Eto chat to our solar experts...\u003C/p\u003E\n", "created": "Oct 2020", "terms": "Solar, Education" }, { "title": "LEARN | Understanding Solar Panels", "nid": "441", "body": "\u003Cp\u003EIf you\u2019re considering investing in a \u003Ca href=\u0022https://www.magnetgroup.co.za/solutions-solar/index.php\u0022\u003Esolar system\u003C/a\u003E, the best place to start is by educating yourself... In this article, we\u2019re giving you a basic understanding of the types of solar panels.\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003EWhat is a solar panel?\u003C/strong\u003E\u003Cbr /\u003E\nA \u2018solar panel\u2019 is a commonly used term for a Photovoltaic (PV) module. It is an assembly of PV cells mounted or housed in a framework for installation. Inside this framework is a silicone cell protected by a thick and clear sheet of protective glass. A collection of PV modules is called a PV or solar panel, and a system of panels is referred to as an array.\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003EHow do solar panels work?\u003C/strong\u003E\u003Cbr /\u003E\nPV cells in a panel absorb light energy or irradiance from the sun to produce direct current (DC) electricity. PV panels form part of a solar system. Once light energy has been harvested and transformed into practical energy, it gets sent to an inverter to be transformed. \u00A0\u003C/p\u003E\n\u003Cp\u003EOther components of a solar system may include batteries, chargers, and the balance of system (wiring, switches, etc.)\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003ETypes of solar panels\u003C/strong\u003E\u003Cbr /\u003E\nTypes of solar panels typically used include monocrystalline, polycrystalline, and thin film.\u003C/p\u003E\n\u003Cp\u003E\u003Ca href=\u0022https://www.youtube.com/watch?v=5OefNyWGH2Q\u0022\u003E\u003Cimg alt=\u0022Types of solar panels\u0022 data-entity-type=\u0022file\u0022 data-entity-uuid=\u00227fbc4856-f03b-40bd-bbae-060537356251\u0022 src=\u0022/cms/drupal8-magnetgroup/sites/default/files/inline-images/Types%20of%20Solar%20Panels-02.jpg\u0022 class=\u0022align-center\u0022 /\u003E\u003C/a\u003E\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003E1. Monocrystalline panels\u003C/strong\u003E\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli\u003EMade from a single crystal structure\u003C/li\u003E\n\u003Cli\u003EOlder technology of the three panel types\u003C/li\u003E\n\u003Cli\u003ESolar cells have a uniform flat colour\u003C/li\u003E\n\u003Cli\u003EMost efficient \u2013 you can install fewer of these high-efficiency panels\u003C/li\u003E\n\u003Cli\u003EMost expensive per watt\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp\u003E\u003Cstrong\u003E2. Polycrystalline panels\u003C/strong\u003E\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli\u003ENewer technology \u2013 require less silicon\u003C/li\u003E\n\u003Cli\u003EMost affordable \u2013 lowest price per watt\u003C/li\u003E\n\u003Cli\u003ELess efficient\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp\u003E\u003Cstrong\u003E3. Thin film panels\u003C/strong\u003E\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli\u003EMade from a variety of materials\u003C/li\u003E\n\u003Cli\u003E4 different types of thin film panels\u003C/li\u003E\n\u003Cli\u003EThe most prevalent type of thin film panel is made from cadmium telluride (CdTe)\u003C/li\u003E\n\u003Cli\u003ECan also be made from silicon, similar to the composition of mono and polycrystalline panels\u003C/li\u003E\n\u003Cli\u003ELeast commonly used type of panel\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp\u003E\u003Ca href=\u0022https://www.youtube.com/watch?v=5OefNyWGH2Q\u0022\u003E\u003Cimg alt=\u0022Comparison of panels\u0022 data-entity-type=\u0022file\u0022 data-entity-uuid=\u00228c7f23a7-1514-469d-8a14-77d906580c32\u0022 src=\u0022/cms/drupal8-magnetgroup/sites/default/files/inline-images/Comparison%20of%20Solar%20Panels-01_0.jpg\u0022 class=\u0022align-center\u0022 /\u003E\u003C/a\u003E\u003C/p\u003E\n\u003Cp\u003E\u00A0\u003C/p\u003E\n\u003Cp\u003EWith the progression of technology, the monocrystalline and polycrystalline panels have superceded thin film. Consider turning to a monocrystalline panel if you\u0027d like to enjoy the benefits of higher efficiencies, and less degradation. Advantages of higher powered panels include maximising your roof space, minimising\u00A0components required for the installation, and (theoretically) enjoying a slightly cheaper installation per watt.\u00A0\u00A0\u00A0\u00A0 \u00A0\u00A0\u003C/p\u003E\n\u003Cp\u003ENeed a solar solution for your home or facility? Not quite sure if it\u0027s a feasible option for you? Contact us, and we will put together a desktop proposal for you!\u003C/p\u003E\n\u003Cp\u003EClick\u003Ca href=\u0022mailto:hello@magnetgroup.co.za\u0022\u003E\u003Cstrong\u003E here \u003C/strong\u003E\u003C/a\u003Eto chat to our solar experts\u2026\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003EResources\u003C/strong\u003E\u003Cbr /\u003E\n\u003Ca href=\u0022https://www.youtube.com/watch?v=gBgS-FfF8Ew\u0026amp;feature=youtu.be\u0022\u003E\u003Cstrong\u003EWatch \u003C/strong\u003E\u003C/a\u003Eour quick video for more on solar panels.\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003E\u003Ca href=\u0022https://www.magnetgroup.co.za/download/magnet-solar-catalogue.pdf\u0022\u003EDownload \u003C/a\u003E\u003C/strong\u003Eour Solar \u0026amp; Back-up Power catalogue\u003C/p\u003E\n\u003Cp\u003EClick below to learn more about:\u003Cbr /\u003E\n- \u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=Grid-Tied-Off-Grid-and-Hybrid-Solar-Systems---what039s-the-difference-\u0022\u003E\u003Cstrong\u003EThe different types of solar systems\u003C/strong\u003E\u003C/a\u003E\u003Cbr /\u003E\n- \u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=NEW-SERIES--Batteries---Understanding-Batteries\u0022\u003E\u003Cstrong\u003EBatteries\u003C/strong\u003E\u003C/a\u003E\u003Cbr /\u003E\n- \u003Cstrong\u003E\u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=LEARN--The-World-of-Inverters\u0022\u003EInverters\u003C/a\u003E\u003C/strong\u003E\u003Cbr /\u003E\n\u003Cstrong\u003E- \u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=DISCOVER--The-Tier-System-for-rating-solar-panel-manufacturers\u0022\u003ETier 1 solar panel manufacturers\u003C/a\u003E\u003C/strong\u003E\u003C/p\u003E\n\u003Cp\u003E\u00A0\u003C/p\u003E\n", "created": "Oct 2020", "terms": "Solar, Education" }, { "title": "LEARN | Solar Funding Models", "nid": "438", "body": "\u003Cp\u003E\u003Ca href=\u0022mailto:hello@magnetgroup.co.za\u0022\u003E\u003Cimg alt=\u0022Magnet solar array\u0022 data-entity-type=\u0022file\u0022 data-entity-uuid=\u002268fb3aa2-3010-4366-a4b1-8860471cfdc5\u0022 src=\u0022/cms/drupal8-magnetgroup/sites/default/files/inline-images/56%20resized_1.jpg\u0022 class=\u0022align-center\u0022 /\u003E\u003C/a\u003E\u003C/p\u003E\n\u003Cp\u003EIf you\u2019re looking into investing in a \u003Ca href=\u0022https://www.magnetgroup.co.za/solutions-solar/index.php\u0022\u003Esolar\u003C/a\u003E system, first consider this important question\u2026 How will you fund the installation?\u003C/p\u003E\n\u003Cp\u003EIn this article, we\u2019re discussing the different financial models to fund solar systems. \u00A0\u003C/p\u003E\n\u003Cp\u003EThere are 3 solar funding models in the market:\u003Cbr /\u003E\n1. Power Purchase Agreement (PPA)\u003Cbr /\u003E\n2. Lease\u003Cbr /\u003E\n3. Outright purchase\u003C/p\u003E\n\u003Cp\u003EObviously models do vary, but the fundamentals are generally the same. Familiarise yourself with the pro\u2019s and con\u2019s we\u2019re highlighting in each option, and decide which is the most suitable way forward for your solar investment\u2026\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003EPower Purchase Agreement (PPA)\u003C/strong\u003E\u003C/p\u003E\n\u003Cp\u003EIna PPA, the provider is generally a \u201CFinancial Engineer\u201D whom outsources a separate contractor to install and maintain the solar system, at no cost to you. Typically, you will sign a contract of between 12 and 20 years, to take all power produced by the system.\u003C/p\u003E\n\u003Cp\u003EPay particular attention to the fine print. Be sure to establish if power produced and not consumed over the weekends, public holidays and shut-down periods will be billed or discounted. Generally, these contracts are factored on a \u201Ctake or pay\u201D, where you pay for all power produced, irrelevant of your requirement for it.\u003C/p\u003E\n\u003Cp\u003EMoreover, be sure that you are as energy efficient as possible, before installing the solar system. For instance, if you change to LED lighting after a system is sized and installed, your electrical load profile will drop and you will be obligated to buy extra power that you are no longer using.\u003C/p\u003E\n\u003Cp\u003EFurthermore, always ensure that you are going to be at the premises for at least the length of the contract. Otherwise, you will need to buy your way out of the contract when you move.\u003C/p\u003E\n\u003Cp\u003ELastly, you can expect a reduction in power cost of 10 -25% of the roughly 30-40% power the PPA provider will be supplying you. The net effect is that you will most likely see a discount of between 3 and 8% off you electricity costs.\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003ELease\u003C/strong\u003E\u003C/p\u003E\n\u003Cp\u003EWith a lease, the asset is installed by an EPC (Engineering, Procurement and Construction) provider and financed through a separate company.\u003C/p\u003E\n\u003Cp\u003EDid you know that Magnet has its own financing platform? Magnet Capital will provide the finance, whilst Magnet will also install the system. There is no deposit required, no surety required, funding is off the balance sheet, and it can be approved in a matter of weeks. As opposed to the banks, which often take months.\u003C/p\u003E\n\u003Cp\u003EFurthermore, you can either have a zero escalation linked to prime, or have an 8% escalation matching the anticipated increase in energy cost. Cost of power dependent, some sites are cash positive from day one, with zero cash outlay.\u003C/p\u003E\n\u003Cp\u003EAfter a 4, 5 or 6 year lease, the asset changes hands and all electricity savings are then enjoyed by the end user or land lord.\u003C/p\u003E\n\u003Cp\u003ESite operational hours dependent, once the system has been paid off, electricity bill savings can vary between 20 and 45%.\u003C/p\u003E\n\u003Cp\u003EIf you have no Capex to allocate, then this is the most beneficial solution to use. Moreover, you won\u2019t be locked into a 15 \u2013 20 year PPA agreement with the risk of having to pay for all power produced and only seeing a 3-8% saving.\u003C/p\u003E\n\u003Cp\u003ELearn more! Click \u003Ca href=\u0022https://www.magnetgroup.co.za/download/magnet-capital.pdf\u0022\u003E\u003Cstrong\u003Ehere\u003C/strong\u003E\u003C/a\u003E to download the Magnet Capital brochure now!\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003EOutright purchase\u003C/strong\u003E\u003C/p\u003E\n\u003Cp\u003EIf you have the capital, or can extend your bond to secure a loan below prime, then this could be the solution with the best financial returns\u2026\u003C/p\u003E\n\u003Cp\u003EWhen purchasing your own solar system, you simply award a service provider, take out a maintenance plan with them, and then you have a system that reduces your power consumption by up to 45%.\u003C/p\u003E\n\u003Cp\u003EIn addition, as the system is in the company\u2019s name, that company is entitled to the SARS 12B depreciation benefit. Essentially this means 28% of the project value is tax deductible in year one. If the system is under a PPA or lease, you don\u2019t get that tax break. However, under a lease, your repayments are tax deductible.\u003C/p\u003E\n\u003Cp\u003E\u003Cimg alt=\u0022Solar funding models\u0022 data-entity-type=\u0022file\u0022 data-entity-uuid=\u0022df3fe0a8-3dc4-42ab-8a84-23c2049a8085\u0022 src=\u0022/cms/drupal8-magnetgroup/sites/default/files/inline-images/Solar%20funding%20models.jpg\u0022 class=\u0022align-center\u0022 /\u003E\u003C/p\u003E\n\u003Cp\u003ELearn more! Click below\u00A0to read our articles on:\u003Cbr /\u003E\n- \u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=SOLAR--Switch-to-Solar-and-take-advantage-of-Tax-Breaks\u0022\u003E\u003Cstrong\u003ESolar Tax Breaks\u003C/strong\u003E\u003C/a\u003E\u003Cbr /\u003E\n- \u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=Grid-Tied-Off-Grid-and-Hybrid-Solar-Systems---what039s-the-difference-\u0022\u003E\u003Cstrong\u003EDifferentiating between the different solar systems\u003C/strong\u003E\u003C/a\u003E\u003Cbr /\u003E\n- \u003Ca href=\u0022https://www.magnetgroup.co.za/news.php?type=articles\u0026amp;name=END-OF-SERIES--7-Common-Mistakes-of-Solar-part-5\u0022\u003E\u003Cstrong\u003E7 Common Solar Mistakes\u003C/strong\u003E\u003C/a\u003E\u003C/p\u003E\n\u003Cp\u003E\u003Cstrong\u003EIn closing\u2026\u003C/strong\u003E\u003C/p\u003E\n\u003Cp\u003ESolar power is definitely a sound investment. When considering which of the financing models is the best fit for you, remember to ask yourself these questions:\u003Cbr /\u003E\n1. Who will own the asset?\u003Cbr /\u003E\n2. Will you pay for power you don\u2019t consume?\u003Cbr /\u003E\n3. Will your Capex budget be positively or negatively affected?\u003Cbr /\u003E\n4. How much energy savings will you see?\u003Cbr /\u003E\n5. Is it important for you to benefit from Solar Tax Breaks?\u003C/p\u003E\n\u003Cp\u003E\u00A0\u003C/p\u003E\n\u003Cp\u003EConsidering a solar or back-up power solution for your facility? Click \u003Ca href=\u0022mailto:hello@magnetgroup.co.za\u0022\u003E\u003Cstrong\u003Ehere \u003C/strong\u003E\u003C/a\u003Eto chat to one of our experts now!\u003Cbr /\u003E\n\u00A0\u003C/p\u003E\n", "created": "Oct 2020", "terms": "Solar, Education" }, { "title": "LEARN | The World of Inverters", "nid": "436", "body": "\u003Cp class=\u0022text-align-justify\u0022\u003EThe inverter is a fundamental part of every \u003Ca href=\u0022https://www.magnetgroup.co.za/solutions-solar/index.php\u0022\u003Esolar or back-up power\u003C/a\u003E installation. Hence, understanding this piece of equipment is important in ensuring you choose the right inverter for your application. In this article, we\u2019re taking you into the world of inverters - giving you a basic understanding of what inverters are, and describing the different types of inverters.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Cstrong\u003EUnderstanding inverters\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EBefore discussing what inverters are, it is important to first understand that there are two types of electricity \u2013 alternating current (AC) and direct current (DC).\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EAt home, appliances are designed to run off of an AC supply. AC electricity is received from electrical outlets. However, electricity received from solar panels and batteries is DC electricity. In order to power appliances and other electrical equipment from renewable sources or battery banks, an inverter is used to invert DC electricity into AC electricity.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EAn inverter typically consists of a number of electronic switches known as IGBT\u2019s (insulated-gate bipolar transistors). The opening and closing of these switches is controlled. The IGBT\u2019s can open and close exceptionally fast, and in pairs, to control the flow of electricity. By controlling the path which the electricity takes and how long it flows in the different paths, AC electricity is then produced from the DC source.\u003C/p\u003E\n\u003Cp\u003E\u003Ca href=\u0022mailto:hello@magnetgroup.co.za\u0022\u003E\u003Cimg alt=\u0022Inverters explained\u0022 data-entity-type=\u0022file\u0022 data-entity-uuid=\u00228d74575f-eea5-499c-9de8-c73884e41382\u0022 src=\u0022/cms/drupal8-magnetgroup/sites/default/files/inline-images/Inverters%20Explained-02.jpg\u0022 class=\u0022align-center\u0022 /\u003E\u003C/a\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Cstrong\u003EInverter applications\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003ETypical applications of solar inverts include:\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003EUninterruptible power supplies\u003C/li\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003EAs a building block of a switched mode power supply\u003C/li\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003EAs standalone inverters\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Cstrong\u003EDifferent types of inverters\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EA hybrid solar system stores excess solar energy and can also provide back-up power during load shedding. This is ideal for residential use. For businesses (which primarily operate during daylight hours), a grid-tied solar system is still the most economical choice.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EIn grid-tied and hybrid solar systems, the panels are connected directly into the inverter. The inverter then plugs into the building\u2019s electrical box or (DB board). Functions typically performed by grid-tied and hybrid inverters include:\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003EMonitoring power usage\u003C/li\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003EGrid synchronisation\u003C/li\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003EUses an alternative source of power (batteries or solar panels)\u003C/li\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003ESynchronises between power sources (uses another source if one is depleted)\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Cstrong\u003E1. Pure Sine Wave\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EWhen purchasing an inverter, you always want the current wave to be as \u201Ctrue\u201D or \u201Cpure\u201D as possible. Pure sine wave inverters can be used on all electronic equipment and typically will not have any side effect. Features of pure sine wave inverters include the fact that they deliver quality power output, they are quieter than modified sine waves, and they are ideal for modern appliances.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EA pure sine wave inverter, however, is more expensive than a modified sine wave inverter.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Cstrong\u003E2. Modified sine wave\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EModified sine wave inverters output lower quality power and are only compatible with certain appliances. As such, they can be used for simple systems that don\u2019t have any delicate electronics or audio equipment. Although some equipment may seem to be working fine with a modified sine wave inverter, they may actually run hotter and their lifespan may also be affected.\u003C/p\u003E\n\u003Cp\u003E\u003Ca href=\u0022mailto:hello@magnetgroup.co.za\u0022\u003E\u003Cimg alt=\u0022Pure vs modified sine wave\u0022 data-entity-type=\u0022file\u0022 data-entity-uuid=\u0022be89aeb6-d787-4bda-8d50-4c0fcf2277f6\u0022 src=\u0022/cms/drupal8-magnetgroup/sites/default/files/inline-images/Pure%20sine%20wave%20vs%20mod%20sine%20wave-01.jpg\u0022 class=\u0022align-center\u0022 /\u003E\u003C/a\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Cstrong\u003EGrid-tied inverters (used for energy efficiency)\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EString inverters are the least expensive option for use in grid-tied systems. With this type of inverter, there are large groups of panels wired together into strings. However, shade on one panel can affect the entire string. If the system is partially shaded, the efficiency of string inverters drops dramatically.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EWith the provision of building a system in full sunlight, a great option will then be the string inverter - saving money, without sacrificing quality or efficiency. However, if there is shade or other obstructions to the system, consider string inverters with individual power optimizers on each panel.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EPower optimizers allow the inverter to control the output of each panel independently. So if one panel gets shaded, the rest of the panels in the array will continue to produce at full strength. Optimizers also allow for the monitoring of the system on a per-panel basis.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EMany string inverters can function with or without power optimizers. These are simply an extra cost to add the monitoring and shade mitigation functionality.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EAnother option for grid-tied systems is the micro-inverter. The concept of micro-inverters is simple: attach an inverter to every panel. There are two main instances where micro-inverters should be used:\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u2022 When starting with a small system, with a view of expanding down the road.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u2022 When importance is placed on monitoring and optimizing each panel independently.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EWhen pairing a micro-inverter with a panel, a self-contained single-panel solar energy system is created. Each will produce power, regardless of how many panels there are. This eliminates the need to rewire and re-balance panel strings when adding on to the system down the road. This is a more expensive option than string inverters, however, the overall yield is slightly higher.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Cstrong\u003EHybrid inverters (used for load shedding)\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EThe most versatile option is the hybrid inverter. These accept DC and AC power, and various solar power applications are possible with hybrid variations. Here are a few advantages of hybrid inverters:\u003C/p\u003E\n\u003Cul\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003EAffordable for its functionality\u003C/li\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003EPowers loads by using energy sources in the most efficient way\u003C/li\u003E\n\u003Cli class=\u0022text-align-justify\u0022\u003EIdeal choice for both business and residential use\u003C/li\u003E\n\u003C/ul\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003ETo illustrate how hybrid inverters work, take for example a home that runs 1000 watts of power. In the event that solar panels can only produce half of this, the inverter will pull the remaining energy required from the battery. In the instance where there is no battery capacity available, the inverter then draws the remaining energy required from the grid.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EMost modern hybrid inverters have the battery charger and connection built-in, making the future addition of a battery much easier. However, hybrid inverters are more expensive, when compared to grid-tied inverters.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u003Cstrong\u003EOff-grid inverters\u003C/strong\u003E\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EOff-grid systems are typically used where there is no municipal connection. These systems are made up of the same equipment as a hybrid system, but have large battery banks. Furthermore, they are typically designed to operate for at least 3 days without any sun light. Solar power generated from panels charge the batteries directly. Off-grid inverters then invert the DC electricity from the batteries into AC electricity.\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003EConsidering a solar or back-up power solution? Need advice on inverters, batteries and more? Then \u003Ca href=\u0022https://www.magnet.co.za/contactus.html\u0022\u003E\u003Cstrong\u003ECHAT\u003C/strong\u003E\u003C/a\u003E\u003Ca href=\u0022mailto:hello@magnetgroup.co.za\u0022\u003E\u003Cstrong\u003E \u003C/strong\u003E\u003C/a\u003Eto our team of experts now!\u003C/p\u003E\n\u003Cp class=\u0022text-align-justify\u0022\u003E\u00A0\u003C/p\u003E\n", "created": "Oct 2020", "terms": "Solar, Back-Up Power, Education" } ]