Greetings Sir/Madam..Pls am Samuel from Restar Solar Company at East legon Police station area.Am a sales personnel working with the solar equipment manufacturer company from China but just established a branch in Ghana-east legon police station area.As your company is into solar installation, i decided to chat you to...

Greetings Sir/Madam..Pls am Samuel from Restar Solar Company at East legon Police station area.Am a sales personnel working with the solar equipment manufacturer company from China but just established a branch in Ghana-east legon police station area.As your company is into solar installation, i decided to chat you to...

I am kind of lost of what size solar system I need I have a 2300 square-foot house and a tankless water heater. It’s electric and I’m running a 200 amp service and I think I need a 40 kW system but I’m not sure I would like to...

Good day and I hope someone can give me an idea of what I should do in my situation. Initially signed a contract for all roof mounted system which was supposed to produce 25,349 kwh with 51 panels. They had to redesign and provide a ground mount that has...

I have 2 inverter hooked in parallel. Each panel says it can handle 250 amp hours. I have 3 questions. 1 Do I add the amp hours together for a total of 500? 2 Will it harm the inverters if I put more amp hours than the recommended amount?...

hello. can i please know briefly and clearly the difference between AC coupling and DC coupling and if possible using victron.   Thank You!

Good afternoon, I have a question on partial shading. My system consist of 8 panels with 2 strings, my generation sharply drops on one string when one panel is partially in shade. What I see is string one is 260 watts but string two 1320 watts. Is that normal...

Please can calculate  what i need for my solar system… I had a 2000watt inverter, 6 × 450watt panels, 4 × 12V × 200amh batteries..I am looking for a suitable charger controller for my system, please if you can give me the best controller that i can use in...

Hi, I’m Asmane Saadou, an Electrical Engineer from Niger Republic (French Speaker) I would like to know how one could answer a question asked by a fellow member of the forum. For instance, one fellow posted a question on 30th September 2024, from England, searching to know the energy...

Hi, I am trying to do some calculations on how much savings I can achieve by installing solar panels. I live in the UK where there was an average of 4 sun hours per day throughout 2023 (Statistica, 2024). If I were to install solar panels on my property,...

Hi, I’m currently renting a home in California and my monthly energy costs are about $600-1,100 per month, depending on the time of year. What are the best portable solar powered generator options to help reduce my electricity bill? I don’t mind spending some money up front to get...

I am a member of the Environmental Protection Organization (EPO). I am very disappointed that the government of Pakistan wants to plan to tax (new) renewable energy (SOLAR). Solar systems in particular reduce carbon footprints. What are the international laws against these negative policies? Can a tax be imposed...

I am applying for a 3 kilowatt solar system and I am confused if I would get subsidy on my hybrid solar system from Government of India

I am building a small cabin at the beach.  I want to power a small 7 cub it fridge, blender and lights, as well charge a small home office – laptop, phone, printer, wifi.

I have installed 18 panels of 327W each tied to central Sun Power 6000w grid tie inverter set at 240V A/C @ 60hz with two 9 panels strung together. All the panels are mounted on the same roof face with none of the panels shaded. The solar DC Voltage...

Hi there I am looking into moving into a boat with me and my family of 4 how much solar do I need to. Power 4 tvs 3 playstation consoles lights fridge frizzers and heating and electric water system any info would be gratefully appreciated thanks

Dear colleagues: We are working on the design of a pumping system to serve several villages in Senegal. It will be pumped from two boreholes that are about 100 meters apart. The two pumps are connected in parallel and the water is sent to the tank using a single...

Dear Colleagues, can someone help me? I want to setup a Solar System that can successfully charge or support at least 6 HP Elitebook Laptops at a remote office where national grid is not existing. I need to know;   1) Number of Solar Panels to install 2) Storage...

Hi; I have installed 18 panels of 425kW each which totaled  7.65kW with one central inverter. How much of this capacity should I see the system producing in the peak hours (11am to 1pm)? How much % of this capacity should I see in peak hours? (85%-90%?) What should...

I have a Luxpower SNA5000 5KW 48V inverter system with 6x 350w solar panels and 1x Svolt 51.2 battery. I read that the inverter has 2x build in mppt charge controllers. Will it then be possible to connect an additional 6x 550w panels to the second pv input of...

Hi, I live in a rental home in queensland which has solar panels 3KW system (Ever solar TL3200AS). I have purchased an Ecoflow delta (EcoFlow Delta 1800W/1260Wh). my main hope is that I can charge my regular devices using the ecoflow so that my small phone/laptop devices are largely...

I want to ask about the efficiency of renevolt solar panels made by solar x in UAE . Is it comparable with longi himo 6 in efficiency

Greetings, I have seen this project of sollar pumps, etc and drilling, I am a candidate willing to help through  they are some  ngo s  non profit,  that I will try to seek help, but I want to be taught  first, online about helping people with the solar water...

I purchased a MPP Solar 2724LV-MR 2.7 Kw 24v all in one and a Power Queen 25.6v 100Ah LiFePO4 battery with the intention of coupling these together for an uninterruptable power supply to use with a few of my home appliances such as TV and security cameras. It is...

We are designing a solar pumping system in Senegal. It will be pumped from two wells separated by about 100 meters (they are very close to the Senegal River). The output of the pumps will be connected in parallel and it will be transported over 20 km to the...

This project is  microscale: I have a 12v  solar panel powering a 6″ 12v DC fan, … that gathers heat from the peak of my small greenhouse, transfers it via an insulated duct, to the “cabinet” that houses my adjacent anaerobic digester (to assist in maintaining an ambient heat...

Had a 15000 watt solar system installed. So far the most I have seen generated is 10900. Any idea why

Hi, I have 4 120 Watt solar panels Model MSX 120 made by Bp Solar. Just wondering what options are available for accessories such as charge controller, batteries, converter and connecting wires between the devices? Thank you Paul

I need professional advise in regards to solR power installation. This is just for local home resident mainly for lighting system. I have a solar panel with following details: Rated max power (Pmax)250w Output tolerance 0/+5% Current Pmax (1mp) 8.15a Voltage Pmax (Vmp) 30.7v Short circuit current (1ac) 8.63a...

I need professional advise in regards to solR power installation. This is just for local home resident mainly for lighting system. I have a solar panel with following details: Rated max power (Pmax)250w Output tolerance 0/+5% Current Pmax (1mp) 8.15a Voltage Pmax (Vmp) 30.7v Short circuit current (1ac) 8.63a...

Question: I recently had installed a 8000kw Megarevo inverter which is fine for the most part. However its been brought to my attention that its unable to fully operate my washing machine (in particular the pump) as the hertz setting isn’t compatible. The inverter is set at 60hz output...

We have a 10.3kwh system. 26 panels on 2 lines. We have a grid tied solaredge inverter (se10000h-us) . We have a renogy lycan 5000 battery. If the power lines go down we want to power a subpanel and charge the battery. If we power the panel and plug...

The power of my panel is 275Watts having a Vmp of 30V and Voc of 38 so when I Check the Voc with a multimeter i got 34Volts in the morning…. But while cleaning the solar module I notice small grey and black outermarks on few edges of Solar...

Hello , i have aquestion regarding battereis i am looking at either purchasing 2 (12V400AH) batteries or 3 (12V200AH) – is their a benifit to getting the 3 over the 2 ? or would the 2 be the better option ?

we have hybrid pump inverter 132kW we want to connect it to 5 pumps and one blower with different capacity,which is lower that 70kW overall. can this hybrid inverter control the motors and blower separately? can this inverter protect all the motors separately? knowing that we have control board...

I would like to add solar panels to an existing system that I had installed 1 year ago. I have 10 panels and can go to 16 with the current setup. If I connect panels to the installed panels, do I need to change the settings on the Deye...

We – GERMAN NGO Water for Kenya – supported the Community to build the Ivooni Thwake Sand Dam with solar pumping … the Cooperative has to guarantee, that -water will be given only, if it  is paid for, -there will be a reliable control, -there is enough money from...

I have a growtech inverter (not a growatt) inverter. Its a 5.5kva inverter brand new. After installation everything looked beautiful inverter charged batteries and everything was good. Then the power tripped and after returning the main breakers everything looked ok, except the inverter no longer seeing the batteries at...

I have a growtech inverter (not a growatt) inverter. Its a 5.5kva inverter brand new. After installation everything looked beautiful inverter charged batteries and everything was good. Then the power tripped and after returning the main breakers everything looked ok, except the inverter no longer seeing the batteries at...

Few days back my solar plant production decreases drastically, when inspected one of my solar panel (JA solar 455W) positive terminal of mc4 connector melted and broken and it also  caught fire which causes black spot on the back side of solar panel. Before lodging complaint with the installer...

Is it a common practice to replace the tiles underneath solar panels with a plastic sheet during installation?

I have Huawei ems-48100u2 batteries and growatt inverters. We have tried to contact them but communication failed. Growatt have been no help and Huawei have not replied. Is there a monitor that I could use to know more accurately the state of the batteries?

I need to know what the difference is between these two SolarEdge Inverter model numbers is: SE14.4KUS-R2IBNU4 SE14.4KUS-R2IBNZ4

Can I charge a battery with two different sources simultaneously?

The max kph I used for one month was 1850.  Would a set up including: 8-S6 L16-HC (S-550) 445Ah 6V Deep Cycle Batteries, 4-Midnite Solar Classic 200 MPPT Charge Controllers and 24-Solarland SLP190-24C1D2 Polycrystalline 190 Watt 24 Volt Solar Panels produce that if sufficient sunlight.

HI…I have 4 12v 5 watts Outdoor CCTV Camera. Please help me power this will solar panel. Solar? Battery? Controller?   Regards, Ruel

Good day all       I am not sure which solar option is the best please can you assist Here are all the options, could you tell me which one is best or which parts are the best.   Rebel max inverter with shoto battery SMK inverter with...

4×450 w 48 v solar panels what mppt on 24 v battery  bank

I can’t connect my new portable solar panel to my Bluetti EB3A . The panel I bought is a Baldr 200W. The accompanying cables don’t match up. The Bluetti input is an 8mm barrel and the Baldr cable ends in a red and black square plastic.

I want to expand my current solar array to increase power output for an electric car and to cover all of my monthly electric bills/usage. Currently I have a 10-year old SunPower system in a string inverter configuration with 12 panels: Inverter: SunPower SPR-3600p-TL-1 3.6 kW Panels: SunPower E20/327...

Hi. My solar system comprises 24 x 330w panels. Two 100A Microcare MPPT,’s and a 8kw Microcare inverter. I further have a 7.4 SolarMd battery. Two days ago I had a second 12kWh battery installed which now only charges up to 66%. It seems that as soon as the...

Dear Soar Hub. My array produces between 380voc to 477 voc. Good days/bad days. My growatt spf 500es is capable of a maximum input voc of 450v My inverter will shut down when it goes over 455v. Can I put between the pv array which is in series and...

I had 30, 400 Watt solar panels installed about 2 weeks ago. Just got access to the App. The live status screen says Solar is producing 4.2 kW. Full Sunlight middle of the day. Does this sound like the correct amount of output from the array?

I am installing a hybrid solar system. My usage is 8.2 kwh per day, a small house, everything is 220v in the house. I will have 2760 watts of solar panels on one string facing west. 5-6 hrs of sun per day. My 2-string hybrid inverter is 3.6kw. It’s...

Hi I’m doing a master’s in renewable energy specializing in solar energy Now I’m supposed to do a proposal for my thesis I’m thinking of some subject that is related to bifacial PV can you please give great topics? Should I do comparative analysis or please help me in...

Would it be bad to use a solar panel to do electrolysis of water in a closed circuit? Would it short the panel to have 18V of electricity from my 18V solar panel flowing through water?

I have bought 9kw of solar panels. I am waiting on a voltacon 11kw 48v controller inverter to arrive. Should i buy a new battery rig or can i utilise the batteries i have already? Instead of wiring in series is it possible to make 4x 12 volt bank...

I have bought 9kw of solar panels. I am waiting on a voltacon 11kw 48v controller inverter to arrive. Should i buy a new battery rig or can i utilise the batteries i have already? Instead of wiring in series is it possible to make 4x 12 volt bank...

I was reading some text about “Combined use of solar energy for pumping and other use for electricity”, giving a higher level of service to the users, both getting water pumped, but also electricity for other purposes using the same system. Any references? – Maybe a source by UNICEF?...

Hey i have 2 29ah deep cycle batteries and it wont hold a charge overnight and it keeps jumping to different voltages and it charges quickly up what’s the problem plz help

Hey i have 2 29ah deep cycle batteries and it wont hold a charge overnight and it keeps jumping to different voltages and it charges quickly up what’s the problem plz help

Do you have any data on saving of greenhouse gases using solar powered pump (e.g., /1 million cubic meters of water delivery)?

I have a Bluetooth PS50 portable solar powered generator. I have only charged it up before using AC wall outlet. I have purchased a BALDR 120W solar panel for it. My question is do I need any kind of controller between the solar panel and the generator?

I am prepping to click approve on a plan for a solar system provided by Tesla & need help making sure it is the right solution for my needs… Needs: Solar solution can run everything in the house without a priority breaker panel in the event of an power...

Delivery pipe size over 200m- head of 40m -10000 litres in   15hrs.

Is solar panels worth it

Dear colleagues, would be your kind to support us in designing the solar system (pump, solar panels and etc.) is there any easy way (norms) to do it without access to the compass of the companies. we really in trouble in this matter.

Is there any ways to receive updates from you, e.g. a newsletter or follow you on social media to receive updates?

hello, this is Pierre Fourcassie, UNICEF. I am in Mozambique at the moment and i was wondering if you could share any documents on PV water pumping project in this country -or Angola. Documents could be evaluations, documented good/bad practices, analysis, site visits, technical project documentations, suppliers, etc… –...

In your cost comparisons of solar vs generator pumping schemes, is drilling of borehole included in the calculation?

In your life cycle cost analysis , what the justification on the difference on the break even period for different countries? why is just 1 year in Uganda and 5.1 years in Iraq?

In your cost analysis, did you consider the maintenance cost of systems knowing that in remote areas people do not have the skills? How do you manage that because it could help to increase the lifespan of systems and empower local communities especially youth?

What is the life time for solar pump and system invertor?

How do we integrate financing of Solar powered water systems especially to Sub- Saharan African Countries?

In your Life Cycle Cost Analysis, usually the exact cost of equipment, maintenance and repair costs are lacking in developing country so how you exactly calculated LCC or you take the estimate.

Could a pump controller and/or inverter be sized large so it will be connected to power (or operate) multiple (submersible borewell) pumps?    

Especially when compared to equivalent diesel-based solutions? Thank you.