I have that HF 100 watt system. Let me answer generally first for all interested readers, and then about your specific application.
If you knew absolutely nothing about solar and wanted to learn what lowest end solar panels are and what a lowest-end PWM charge controller is, this might be the thing. But if you wanted to actually accomplish much more than powering the 3-watt 12v light bulbs, save your money and buy better stuff. It really is a toy. I paid $144 for mine on sale a few years back, but then you need a battery and an reasonably sized inverter and some cabling if you want to use the power at night and use AC power, so then you're in for couple hundred more dollars.
Here's why it's bad:
- the solar panels have plastic frames. they will easily break if you try to mount them. tighten a screw too tight through the frame and it cracks. real solar panels have metal frames
- at 7200 feet in the sunny, clear sky desert and 2 years of using them, my 4 x 25watt panels combined together have never put out more than 34 watts total. The most they have ever generated is 230 watt hours in a day. That's not enough power to do very much. It will run some 12v lights, nothing much more.
- the manual for the charge controller is useless. I still have no idea what the various modes are. I now I just use charge controller as a DC switch and don't have it control any battery charging.
- it's bulky for what it does.
- when it's cloudy is produces almost nothing, even tho amorphous is supposed to be better
- in 18 months of using panels and logging the data, they have produced a total of 48kWh. So in a place with 300+ days of sun, I'm averaging less than 90 Wh a day.
If you want it as an emergency lighting system, to charge a phone and a laptop, it can do that.
So now my question is, why do want to run around in a golf cart during a hurricane?!
But seriously, for your application, I think you can do better. I've not run mine in series so I can't speak to that. Good you are not thinking of using the supplied charge controller. The panels are heavy for your application, about 10 pounds each and makes more like 8 actual watts per panel peak sun rather than the nominally rated 25. I don't think you will get much usable production if anything on cloudy post-hurricane days. Not enough to do much with a big 48v golf cart battery bank. I haven't had a cloudy day in the 30-day look-back period to verify, but if I recall correctly I get like 40 Wh total from the 4 panels combined on a cloudy day.
Hope that's helpful.
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When it comes to solar panels, there are many different wattages to choose from, with 250 watt panels being a common option. But are they the right choice for you? In this article, we’ll explore the advantages and disadvantages of 250-watt solar panels to help you make an informed decision.
The amount of energy produced by a 250 watt solar panel depends on various factors, such as the weather, time of day, and the orientation and tilt of the panel. However, on average, a 250-watt panel can produce around 30 to 40 kilowatt-hours (kWh) of electricity per month. This translates to about 360 to 480 kWh per year.
The number of 250 watt solar panels you would need depends on your energy needs and the size of your property. A typical household in the United States uses around 10,400 kWh of electricity per year, which would require approximately 21 to 29 250-watt solar panels to meet those energy needs. However, this can vary depending on the efficiency of the panels and the amount of sunlight your property receives.
Before deciding on 250 watt solar panels, it’s important to determine how many panels you would need to maximize your savings. Factors such as your location, energy needs, and available sunlight should all be taken into consideration.
You can use online calculators or consult with a professional solar panel installer to determine the ideal number of panels for your specific situation.
While 250 watt solar panels were once a popular choice, they have become less common due to advancements in technology and the availability of higher-wattage panels. However, they are still used in certain situations, such as on smaller rooftops or in areas with lower electricity needs.
One potential disadvantage of 250 watt solar panels is that they may use outdated technology, such as polycrystalline cells, which are less efficient than newer monocrystalline cells. This can result in lower energy production and a longer payback period for the panels.
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If you’re considering 250 watt solar panels, you may want to look into purchasing a solar panel kit, which includes all the necessary components for installation. These kits can be a cost-effective option and may include additional features such as monitoring systems or battery storage.
Ultimately, the decision to purchase 250-watt solar panels depends on your specific energy needs and the conditions of your property. While they may not be the most efficient option, they can still provide a significant amount of energy and be a cost-effective choice for smaller properties or lower energy needs.
250-watt solar panels have both advantages and disadvantages, and the decision to purchase them should be made based on careful consideration of your energy needs and available options. Consulting with a professional solar panel installer can also help you make an informed decision and ensure that your solar panel system is properly installed and maintained for maximum efficiency and savings.
In conclusion, whether 250-watt solar panels are right for your energy needs depends on a variety of factors such as the size of your energy needs, the amount of available space, and your budget.
While 250-watt solar panels are no longer the most efficient option on the market, they are still a viable choice for many homeowners and businesses.
When considering purchasing 250-watt solar panels, be sure to do your research and consult with a professional to determine if they are the best fit for your specific situation.
Overall, solar energy is a smart investment for those looking to save money on their energy bills and reduce their carbon footprint.
As technology advances, solar panels will continue to become more efficient and affordable, making solar energy an even more attractive option for homeowners and businesses alike. Whether you choose 250-watt solar panels or another option, investing in solar energy is a positive step towards a more sustainable future.
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