To simplify calculations, solar radiation is specified in peak sun-hours per day. Bill Info. If you cannot obtain any values, use the value in the central columun “Average Watts column. Traditional Solar Street Lights All you need to know about Solar Battery Lifespan. 6 factors affect how many solar panels you’ll need. Two days of autonomy means that your batteries can supply continuous energy for two full days without charging. Mail me at : [email protected] http://www.elnova.com, Hi i cant download the excel sheet. 2.67 / 0.8 = 3.34 amps. Average Bill. Fabulous work.. Free online application for calculating solar photovoltaic installation. Actually, it is not necessary to do the Calculation within your Excel table, instead, you could do the Calculation operation within PowerApps, then write the calculated result back to your Excel table. i know how size now, useful calculator…should include DC load option…. Production. I have seen the excel sheet, you have prepared for design of solar panel, inverter and battery bank and it is awesome. Inverter efficiency 80%. I was expecting the solar panel side to flag an error but it remained green (ok) despite varying days of backup. Need more information? How many days will your solar system run without sunshine? This formula divides the value in cell A1 by the value in cell B1. H  is the annual average solar radiation on tilted panels. The angle and orientation of the solar panels vary by location, this page will help you set the optimum angle for fixed solar panels for your area. As per my calculation & estimate you will require approx. = 2-Solar penal Qty. Please help with this with the appropriate solar panel strategy or planning. Excellent initiative and great work by Jignesh Parmar. Don't forget, always start a formula with an equal sign (=). Solar Energy is the fastest-growing electricity source and is expected to contribute 36 percent of total US renewable energy generation by 2050. Step 1 – Calculate your RV electrical power requirements 12 Volt Appliances. Open circuit voltage - the output voltage of the PV cell with no load current flowing 3. I tried to use this calculator for sizing solar panels in hybrid system for micro GSM BTS, but size of invertor is too big for total load of 500 W. For total load of 500 W with operational time 24 h per day, calculator gives size of invertor about 555 KW. The following Excel files were generated in SAM 2020.2.29 by clicking Send to Excel with equations from the Cash Flow tab on the Results page for the default PV case for each PPA financial model. Each panel is rated by its DC output power. I have a project of Installing Solar Power System on a Terris of a building having an area of 3000 sq ft. I guess there is mistake in cell which shows KW. First off, input your system size in the project details section of the inputs tab. That’s to account for all those variables we've been going over. Solar cells are connected in series to form photovoltaic panels that are connected together to crate a PV generator. It need to be addressed in the order Load + losses => Battery; then charger & PV solar; then consider days without sunlight and multiply accordingly. Great tool! Simply fill out your details and one of our specialists will be in contact. 2.5A x 230Volts = 575 Watts. Ratings, use the following formula: V x A = W. For example, the value you find is indicated at 2.5A. I am searching for Protection system also solar. In Excel I can do a formula and pick and choose calues to calculate, but how can I do it in PowerApps, that is, how can I say (Title3.ValidationMax - Title3.Validation.Min) / (Title3.RangeMax-Title3.RangeMin). Here’s a simple formula for calculating your solar panel’s power output. Thanhks! Example of detailed losses that gives the PR value (depends on the site, the technology, and sizing of the system): - Inverter losses (4% to 10 %) - Temperature losses (5% to 20%) - DC cables losses (1 to 3 %) - AC cables losses (1 to 3 %) - Shadings 0 % to 80% !!! Formula Basics. solar collectors both theoretically and experimentally have been investigated and formulae for the calculation of their efficiency and heat energy produced by the collector have been developed. HENCE , 3 BATTERIES ARE NEEDED FOR A 700 WATT LOAD ON A 3 BATTERY SYSTEM (36 VDC) for 3 hrs backup. Thanks to all the developers for sharing their great works. Electricity losses online calculator : AC and DC electrical wire voltage drop and energy losses. Vp +258 82 604 5012, Consolidated Total Energy ( WH /day) – 28184, 1- Battery Qty. The process of going solar has always been confusing! Enter the formula shown below. You can find this global radiation value here :Solar radiation databases You have to find the global annual radiation incident on your PV panels with your specific inclination (slope, tilt) and orientation (azimut). This is not a valid integer! How to calculate your solar power requirements: 1. To calculate the annual degradation percentage of solar panels, we’ll need to know the annual kWh production of the system. Insert all figures in decimal, eg 2 or 1.5. Shifting to solar has a wide range of economic, environmental and personal benefits. It need to be addressed in the order Load + losses => Battery; then charger & PV solar; then consider days without sunlight and multiply accordingly. Do that with lead acid and it gets truly massive! To create Power Query formulas in Excel, you can use the Query Editor formula bar, or the Advanced Editor. Peak Solar Sun Hours is the number of hours when solar irradiance averages 1000 watts per square meter. home; Calculate; Components; BLOG; Images; Contact; Full calculation of all the elements necessary for a photovoltaic isolated, so fast and easy. Can You please share the password? Richard Graylin. Calculator : AC and DC electrical wire voltage drop and energy losses. Q1) Down loaded sheet, but asks for password. How to calculate the annual solar energy output of a photovoltaic system? Solar panels are normally 12V DC output. No power generation system is 100% efficient, in fact with solar panels the efficiency is quite low only about 22% of all the energy they collect is converted to usable power. Below is a DIY (do it yourself) complete note on Solar Panel design installation, calculation about No of solar panels, batteries rating / backup time, inverter/UPS rating, load and required power in Watts. We have a 60 watt solar panel that has an Imp (amps maximum power point) of 3.49. How Solar Power can be Successful in Regions with Moderate Sunshine-How to Calculate the Output of a Solar PV System: A Detailed Guide in Seven Steps. To calculate the energy it can supply the battery with, divide the Watts by the Voltage of the Solar Panel. Result of the calculation is the minimum number of PV panels. 2. Actually, it is not necessary to do the Calculation within your Excel table, instead, you could do the Calculation operation within PowerApps, then write the calculated result back to your Excel table. The Query Editor is a tool included with Power Query that lets you create data queries and formulas in Power Query. Peak Solar Sun Hours. STEP 03 - DETERMINE GEOGRAPHIC COORDINATES AND CORRESPONDING SOLAR RADIATION. i am looking for formula to calculate solar power output on hourly basis for PV plant with given rating using irradiance and diffuse irradiance. It includes all losses. Yeah, you are right. Castellano English remember REGISTER. 20 percent is typical. Compressor power free Excel calculation tool: 1. To calculate the percentage of a total in Excel, execute the following steps. An example for the same would be a 40W appliance in domestic use that will be used for 2 hours per day. Calculate Revenue . solar power as a function of time, in kWh or Wh, that your solar panel can produce, taking into account its rated power and solar energy available at your place.. It will help you. when i am using it, it ask for the password. No power generation system is 100% efficient, in fact with solar panels the efficiency is quite low only about 22% of all the energy they collect is converted to usable power. Daily average . Calculating Solar Panel, Inverter and Battery Charger Specifications. Increase in batteries should automatically result into more panels to ensure batteries are adequately charged. Calculate Size of Solar Panel, Battery Bank and Inverter (MS Excel Spreadsheet), https://app.box.com/s/jgvhc07ssbap7x6udgwq, https://www.box.com/s/jgvhc07ssbap7x6udgwq, MS Excel Spreadsheet // Calculate Size of Solar Panel, Battery Bank and Inverter, Energy from Solar Panel as per Daily Sun lights, Select Type of connection of Batteries in Battery Bank. dear this tool design on AC load but i need a tool that design for DC load. i am looking for formula to calculate solar power output on hourly basis for PV plant with given rating using irradiance and diffuse irradiance. I observed that a corresponding increase in the battery backup time (autonomy) doesn’t affect the sizing of the solar arrays. The project will yield a yearly production of 6,034 kWh (DC), with higher production in the summer months due to the increased solar radiation Tell us what you're thinking... we care about your opinion! See how long it will take for a solar system to pay for itself. I want to maintain the 70 C temperature of 50 liters (approx) water using 500 W DC heater for 24×7. =. DAX includes some of the functions that are used in Excel formulas, and additional functions that are designed to work … For sure, this is an error. Excel file to compute the annual solar electrical energy output of a photovoltaic system : Solar photovoltaic applications for smartphone and tablet. STEP 04 - OBTAIN THE CONVERSION EFFICIENCY OF THE SOLAR … 120 Watts. Currently the best commercial solar panel (PV) efficiency is around 17.4%. Maximum Power - this is the maximum power out put of the PV module (see I-V curve below) 2. Calculation of solar photovoltaic power and energy. I guess there is mistake in cell which shows KW. Short circuit current - the current which would flow if the PV sell output was shorted 4. There are two core components of revenue: power prices and production. Power Pivot provides Data Analysis Expressions (DAX) for creating custom calculations in Power Pivot tables and in Excel PivotTables. The average amount of heat energy produced by a flat plate solar collector during a day has been calculated by formula qEη(1 aKbK2) c =c −+, (1) where qc– average amount of heat energy, produced by a solar collector during a day, kWh m -2; Ec–average amount of heat energy, received by 1 m It is a 10 storey building having three flats/apartments on each floor with each flat/apartment has a load of 18420 watt hours or 18.42 kWh. or any one can tell me that relation between DC and AC load. I am new in this field, and i want to learn how this calculator works for calculating the load. Selecting a column and clicking on the Insert button (or double-clicking the name) will insert it into the formula. Download excel solar panel calculator calculator spreadsheet calculator online for free. it goes on this link https://www.box.com/s/jgvhc07ssbap7x6udgwq the link doesnt work so cant download, ???? Formula Basics. The language used to create those formulas is the Power Query Formula Language. You can see the column names being used; Number #1 is divided by the total of Number #1 + Number #2. You will want to input the PPA rate of power. Daily average load is 35 KW (AC Loads) for 8 hrs running per day (factory). STEP 01 - DETERMINE THE PHOTOVOLTAIC ARRAY AREA . Please help me. Very true, there’s no way you can add the batteries to cater for the days of autonomy and you fail to add solar panels. Walk through those and do 8 simple steps as you go. 101,017 kWh. Kindly assist I can’t edit as it is saying protected and need password. As explained above, the number of panels needed to reach 1,000 kWh per month changes depending on local sunshine and panel wattage. Example : the solar panel yield of a PV module of 250 Wp with an area of 1.6 m2 is 15.6%. sir; I’m unable to understand MS (Excel Spreadsheet // Calculate Size of Solar Panel, Battery Bank and Inverter) please guide me. How to get solar radiation data anywhere in the world for free? The POWER function works like an exponent in a standard math equation. Written by – MD. Yeah, you are right. Repeat that exercise for every appliance individually to calculate the daily energy requirement for your solar energy system. After entering the installation data press 'Calculate'. Download : Excel file to compute the annual solar electrical energy output of a photovoltaic system : PV-power-calculation-basic.xls Of course in order to simulate the energy production of a PV system with a better accuracy and to get monthly, hourly or instantaneous electric values, you have to use tools and softwares listed here: PV Softwares and calculators. Please contact offline. This tool is of immense help Thank you for your effort. You’re welcome! Dear SAIBA: Did U get an answer to your 2 requests? That means that if you incorrectly calculate the LCOE, you could be designing a sub-optimal solar project. Battery is needed 12 volt, 14 AH. Solar PV system sizing. Of batteries x volt of battery.ex 12 volt x 3 battery= 36 vdc, So for example it comes 15 Multiply by 3 hrs. Be aware that this nominal ratio is given for standard test conditions (STC) : radiation=1000 W/m2, cell temperature=25 celcius degree, Wind speed=1 m/s, AM=1.5. There are many Power Query formulas you can use to discover, combine and refine data. I need software to calculate the solar system! with Circuit, wiring diagrams and solved examples. Learn about power engineering and HV/MV/LV substations. Professional photovoltaic software to download, Online Professional photovoltaic softwares and calculator, Softwares and tools from inverter manufacturers, Solar photovoltaic applications for smartphone and tablet : PV apps. Power Pivot provides Data Analysis Expressions (DAX) for creating custom calculations in Power Pivot tables and in Excel PivotTables. Hi , Nice work still few things I would like to explain . 1. Allinone Solar Street Lights vs. The results are presented graphically, divided into four sub-categories. Degradation is defined as the loss of power produced relative to the rated power. As an example, let’s assume the following about our solar system: Year. Regards! The key results can be found on the first tab 'Results'. This will definitely come in handy when calculating the size of your battery bank. Calculate Size of Solar Panel, No of Solar Panel and Size of Inverter for following Electrical Load Electrical Load Detail: 1 No’s of 100W Computer use for 8 Hours/Day 2 No’s of 60W Fan use for 8 Hours/Day 1 No’s of 100W CFL Light use for 8 Hours/Day Solar System Detail: Solar System Voltage (As… Off Grid Solar Calculator -Off Grid Solar in this case refers to battery stored solar panel systems, either connected to utility or standalone. For the most accurate and personalized off-grid system size calculation, call our solar experts at 1-800-472-1142. Azra. In considering a stand alone system where the battery is supplying all of the energy as the sun goes down; then consider solar PV as the recharger. I don’t see that the calculation for battery bank size is related to the solar array? If you live in an area where there are plenty of cloudy and rainy days, your battery must have enough capacity to power your solar panels until the sun comes out. 20% off code for Pro Plan: EEP2020. Thank you. Get access to premium HV/MV/LV technical articles, advanced electrical engineering guides, papers, and much more! Currently, within PowerApps, there is no way to connect to a Excel table which contains Calculation formula from an app. total solar svstem thet'lllal loss coefficient (W °C-1) i:tcident angle 1110difier weighting factor for x degrees During t e planning and design stages of an IPH solar system, an annual energy calculation method is needed for two principal reasons. Solar Lights Manufacturer 2018-12-21T10:13:44+01:00 Blog, ENG Blog | Search: Search for: CONTACTS. The number of batteries increase but not the panels. Below is a DIY (do it yourself) complete note on Solar Panel design installation, calculation about No of solar panels, batteries rating / backup time, inverter/UPS rating, load and required power in Watts. They replicate SAM's calculations with Excel formulas using inputs from the SAM files. To calculate the size and power backup solution Batterybhai.com provides Power Calculator. In essence, a 24kW solar power (200W by 48V panels) is not affected despite increasing the number of days of backup power. We want to help you get the system that’s right for you. Solar Power Purchase Agreement (PPA) ... Download the Free Solar ROI Calculator for Excel. We can provide. Solar radiation according to NASA table; This process can be simplified by setting up a spreadsheet in Microsoft Excel. We need to understand the operation of solar panel calculation . Best regards! It’s my project so I am facing problem to calculate what types of panels I should use to produce that much voltage by panels with installing batteries.. Here are a few steps to use the solar ROI and payback calculator in Excel. Complete Solar Panel Installation Design & Calculations with Solved Examples – Step by Step Procedure. I want to size the solar panel, battery bank, solar charge controller. Solar Power Calculator. Between 200 kWh/m2.y (Norway) and 2600 kWh/m2.y (Saudi Arabia). it’s free tool but password protected !!!! Only enter data into the PALE ORANGE columns. Formula example #2. In the same way that a bigger battery will provide more power for longer, a larger Solar panel will collect more energy in less time. The principle of solar photovoltaic is to convert solar energy of light (photons) into electricity. 360 V 1100 Ah battery. Here, my application is little different on solar water heater. Regards. The issues are further complicated by considering the battery banks maximum charge current. Please enter your last bill! I do not understand why. Now to calculate the solar panel: Generally a battery charging current = 10% of its AH Charging current = 1.4 A () Solar panel needed = 1.4 A 12 V thank you for your lessons and your calculations. Currently, within PowerApps, there is no way to connect to a Excel table which contains Calculation formula from an app. Nice spreadsheet. Instead, you have to use the Number.Power formula. Can I have your contact nos, as i have to discuss a project where I find the no of batteries and Panels required is very large. Example of detailed losses that gives the PR value (depends on the site, the technology, and sizing of the system): How to calculate output energy of PV solar systems? This solar panel output calculator helps you estimate the real daily energy, a.k.a. However, solar power is an effective solution to reduce energy expenses. Thanks for partnering with Unbound Solar. When you calculate your loads, you will quickly see the advantage of using the most energy efficient devices you can find, like our SunDanzer solar refrigerators and freezers for example. E = A * r * H * PR. Solar panel watts x average hours of sunlight x 75% = daily watt-hours. Hi Sir can you plz provide the calculation formulas for this excel. Cosmas. The key areas of this dialog box are: 1. 1. You will see ‘Download’ button on top-right. 120 Watts / 18v = 6.6 Amps Please note that Solar Panels are not 12v, I repeat Solar Panels are not 12v. Great tool! Could there be a mistake in the sizing of the inverter The calculation is given in kw thereby making the inverter very large. This can be measured and recorded using a photovoltaic production meter. Required EXIDE SOLAR BATTERIES. All credits goes to mr. Jignesh Parmar! during grid fail. This step-by-step Solar Power Calculator offers a guideline for typical appliance ratings and sizing of solar systems. Richard's Microsoft Excel spreadsheet 'Solar Power' can be downloaded here. To change it … For the sake of convenience, let's believe you possess a a 100 watt appliance or load that you would like to operate, free of charge through solar power, for around ten hours every night. Consider the power factor of Not only UPS but also for batteries .example. As an example, let’s say you have 250-watt solar panels and live in a place where you get 5 hours of sunlight per day. Here you will learn how to calculate the annual energy output of a photovoltaic solar installation. This surely is a time saver.. It is a very good site, to enhance our expertise and ability and be more professional. Example of calculation: 4. = 3-PCU Kwp. … The Power operator ( ^ ) which we use in Excel does not work in Power Query formulas. When photons heat special materials they create a displacement of electrons that generate a continuous current. The content is copyrighted to EEP and may not be reproduced on other websites. Please help with password to unlock the protected cells. The global formula to estimate the electricity generated in output of a photovoltaic system is :            (specific to each site) - Losses at weak radiation 3% to 7% - Losses due to dust, snow... (2%) - Other Losses (?) Here are the results of your form submission. Mail me at : [email protected] http://www.elnova.com , Nice work still few things I would like to explain . link takes me to https://app.box.com/s/jgvhc07ssbap7x6udgwq and there’s nothing there. Average Bill Value info. Jinhua Sunmaster Lighting Co. … Solar system (PV) calculation and design. This solar panel output calculator helps you estimate the real daily energy, a.k.a. Our team are always happy to answer any questions that you might have about our services. I cant downlod the sheet link for calculator sixe of Solar pannel, Battery bank and Inverter. Calculates quickly your solar installation anywhere in the world. 2.2 Solar Radiation Models with GIS 12 2.2.1 Esri’s Solar Analyst 14 2.3 Calculating Rooftop Area 17 2.4 Calculating Photovoltaic Potential from Solar Radiation 19 2.5 Solar Mapping Projects as Decision Support Tools 23 2.6 Hawaii Solar Mapping Projects 24 In the end I have a Score field that displays the calculation, a mix of the user input numbers and the values from SharePoint. The calculator also allows you to compare a high quality photovoltaic (PV) system with a lower priced solar system and see the difference in payback time. Download this solar power investment sheet excel template now to calculate your gross/net profit, return on investment, payback period, price per watt peak, price per kWh, etc! In considering a stand alone system where the battery is supplying all of the energy as the sun goes down; then consider solar PV as the recharger. That means that the appliance is using 575 Watters per hour (1kW = 1000W). Disregard the KW the size of the inverter is in watts. 8 answers. Create a custom column by clicking Add Column -> Custom Column. r = solar panel yield or efficiency (%) H = Annual average solar radiation on tilted panels (shadings not included) PR = Performance ratio, coefficient for losses (range between 0.5 and 0.9, default value = 0.75) r is the yield of the solar panel given by the ratio : electrical power (in kWp) of one solar panel divided by the area of one panel. Formula : compressor power calculation 1.1 Simplified formula. Q2) Need to size batteries for a 50 KVA Hybrid Inverter / 360 VDC. Electrically the important parameters for determining the correct installation and performance are: 1. Solar Savings & Payback Calculator. I do not understand why. The Custom Column dialog box opens. Simply fill out the form and select the service you would like a quote for and one our specialists will be in contact. If only you add batteries, the system will not be getting enough charges therefore it is a must for solar panels to be added to the system. … delicious food but in the showcase !!! Backup required for 6 hrs. Study specialized technical articles and papers. Solar Panels power generation is commonly given in Watts e.g. solar technology is the the best power savings at our time. We provide an easy to modify and fill in solar power return on investment template that will support your plan to invest in solar projects. PVCalc allows you to calculate the ROI of PV solar energy projects - viewed as financial investments. i am having some knowlege of it but wish to know the way that how to calculate the size of solar panel, battery and inverter. How to get solar radiation and climate data (precipitaton, temperature, wind, insolation...) anywhere in the world free from NASA database? If you would like us to email you a copy, enter your email address below. Call us : 021 789 0929 Mail us : info@gwstore.co.za Most load calculations include a discount factor for the inefficiency of recharging the battery. How to calculate solar power output using beam irradiance and diffuse irradiance for given rated PV plant ? with Circuit, wiring diagrams and solved examples. What’s that 75 percent for? Complete Solar Panel Installation Design & Calculations with Solved Examples – Step by Step Procedure. Ask for a Quote! If your items are not listed on the form, select the nearest item available from the list. 1. Hi! Principle. DAX includes some of the functions that are used in Excel formulas, and additional functions that are designed to work … Solar charge controller: PWM vs. MPPT Solar Powered WiFi Camera in Solar Street Lights How to Calculate the Size of Solar Power Battery? Choosing the right solar panel for your needs is like choosing a battery. In Excel, exponentiation is handled with the caret (^) operator, so: 2 ^ 2 = POWER ( 2 , 2 ) = 4 2 ^ 3 = POWER ( 2 , 3 ) = 8 2 ^ 4 = POWER ( 2 , 4 ) = 16 This MS Excel spreadsheet calculates the following: This is great work,since it helps on designing an off grid system with a battery bank i thought it should also include the charge controller section.Most PV system builders struggle a lot when it comes to choosing the correct charge controller which works perfect for the system being built. Available columns This contains a list of all the columns in the query. ... read my page about CPAP battery backup emergency solar power. Power generated by the solar panels is used by the fridge etc with any surplus fed to the battery until the battery is 100% charged. Because one of the main benefits of owning rooftop solar is the savings you’ll experience on your monthly power bills, you can easily calculate how long it will be before the savings from the solar panels have paid for themselves, otherwise known as the payback period. It also just so happens that most conventional LCOE calculations incorrectly calculate too high a number, meaning that you are making solar seem less compelling than it should be. Solar energy math calculations for system sizing can be done with a simple calculator using the basic formulas shown here. 2. guess it must be in Wattage. 2. This video goes over a how to put the calculation we performed in the Solar Power System Design into Excel. The unit of the nominal power of the photovoltaic panel in these conditions is called "Watt-peak" (Wp or kWp=1000 Wp or MWp=1000000 Wp). … Determine power consumption demands. The daily energy consumption for it would be 40*2 = 80 Wh. Atiar Ali (EEE, UITS) ID-08410079 asuvro@gmail.com (facebook & email) Solar panel (PV) is a device which can convert energy from light energy (proton) to electrical energy. PR : PR (Performance Ratio) is a very important value to evaluate the quality of a photovoltaic installation because it gives the performance of the installation independently of the orientation, inclination of the panel. You can also email me for further details if you want for this purpose. The spreadsheet contains calculations for both day and night periods as the power requirements are different for each and of course, there is no solar power generated at night. So, the POWER Excel formula to calculate the force will be = (6.67*POWER (10,-11)*1.98*POWER (10,30)*5.97*POWER (10,24))/POWER (1.496*POWER (10,11),2) Since the value obtained as force is a big number of Excel expressed it scientific notation. Simply use the forward slash (/) as the division operator. The screenshot below shows some of these basic formula operations in action. New column name The text entered here is used as the column name in the data table. Also requesting you to provide us the password, Your quick support will help us for proper configuration of Inverter Solar Systems. PV cells are manufactured as modules for use in installations. Finally, on the inputs tab, you will see both a pre-tax and after-tax calculation of the internal rate of return (IRR) on the investment of putting in solar. r is the yield of the solar panel given by the ratio : electrical power (in kWp) of one solar panel divided by the area of one panel. This video goes over a simple procedure for designing a solar power system. solar power as a function of time, in kWh or Wh, that your solar panel can produce, taking into account its rated power and solar energy available at your place.. Input the revenue on that is assumed on the inputs tab of the project finance model for solar. But let’s admit it . OR. First, a calculation method Calculate Size of Solar Panel, No of Solar Panel and Size of Inverter for following Electrical Load Electrical Load Detail: 1 No’s of 100W Computer use for 8 Hours/Day 2 No’s of 60W Fan use for 8 Hours/Day 1 No’s of 100W CFL Light use for 8 Hours/Day Solar System Detail: Solar System Voltage (As… Formula example #1 . I tried to use this calculator for sizing solar panels in hybrid system for micro GSM BTS, but size of invertor is too big for total load of 500 W. For total load of 500 W with operational time 24 h per day, calculator gives size of invertor about 555 KW. you have 12 x 300 = 3600 watt solar panel output, but since the average sunshine can be expected to be around 6 hours a day, the power output is not sufficient for 36000 watt power requirement. This is exceptionally useful as it can reduce typos which will stop our code working as intende…