Can you help answer a question I have three panels connected in series . They are 180 watt panels . My voltage is ok but the watts are low and the current are low going into the batteries . I’m using a Epever 100 amp charge controller .

To whom it May concern, Hello my name is Sarwah. I would like to have your expert advice on solar energy. I am from West Africa and I believe that solar energy is good for that region. I am in the process of giving electricity to about 50 to...

I’ve completely disconnected the 12v wires to my rv from my batteries and installed 4 6v 200ah batteries@12v and 400ah. I also have 3 100w solar panels in series to my renogy elite 40amp controller charger. I have added a 5000w inverter and wired it to the batteries directly....

I saw some news about printed solar panels which are flexible and light weight. Are those commercially available now a days?   Thank you

I have a small solar installation as below for my home, to reduce use of power from provider: 3 x 100w solar panel (serial – +to+to+ & -to-to-) + & – to control unit + & – respectively) Control unit to prevent reverse flow of power Connection from control...

190 watt 12 volt solar panel qty 02 is sufficient for powering 12v 850 va sine wave inverter with battery 160 ah  

Greetings, thanks for your cooperation about solar powered water supply systems, I have few questions. 1- Which conditions we select AC motor water pump rather than DC in? is it related to power or something else? 2- How to verify solar products of  companies? by sending serial number to...

I have a Stanley 1200 amp 500 watt inverter power station/jumpstart pack. It has a outlet on the back that plugs into 110 wall outlet to charge. I want to connect via solar panel with a charge controller. Can I wire a plug to the battery side of the...

Does L1 = 110v and N(L2) = 110v for 220v condecer on 2400 btu by read solar system hookup. I also have the negative hooked to the ground and a ground to the ground

Dear sir, I hope you are fine. i have concern on products of SOLVIS, based in crotia. is the right products and they told that have the a contract of thier solar panels with Groundfos as well, is it right? And please let us know the difference between Photovoltaic...

Dear sir, I hope you are fine. i have concern on products of SOLVIS, based in crotia. is the right products and they told that have the a contract of thier solar panels with Groundfos as well, is it right? And please let us know the difference between Photovoltaic...

Most information available is on community-level (or institutional) systems for solar panel and according pumps. I am looking for pumps that typically would be used by individual households or small groups of households, mostly for domestic purposes.

Please check below pump products number and let us know its originality. production no:98699181 thanks.

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.

Need more training on regarding to solar pump sizing and solar powered related issues. thank and best regard.

Check whether the following sequences are monotonic or not. Are the sequences bounded? If your answer is yes, then what are bounds? a). χl = l exp−l b). bm = sin(mπ 2 ).

Check whether the following sequences are monotonic or not. Are the sequences bounded? If your answer is yes, then what are bounds? a). χl = l exp−l b). bm = sin(mπ 2 ).

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

Hi, these two brands propose long-lasting and quality borehole PV pumps, equipped with controls and protections. Are there less expensive alternatives to these pumps and to your knowlege was there a comparative studies on solar pumps -reliability, lifespan, value for money … etc. many thanks p

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.