Solar is a great alternative.
The 75 watt solar panel from Siemens is a rigid and strong module. They call it the SP75, 75 Watt Monocrystalline 12V Solar Panel from Siemens.
It is a high-efficiency solar module.
The 75 watt solar panel comes with built-in by-pass diodes. This is to stabilize system performance during partial shading conditions.
The package does not include a charge controller or mounting hardware.
The color of the 75 watt solar panel is black. It comes with FM certification which makes it ideal for off-grid applications.
FM certification confirms that the SP75 solar module conforms to a high standard of safety.
They use a heavy-duty corrosion-resistant anodized aluminum frame. This ensures a safe and stable performance during harsh weather conditions. Also, that provides for high-quality panel rigidity.
One can use these solar panels for many years. You will experience no faults, defects, or operating failures.
It comes with a superb warranty for up to 25 years.
On a sunny day with 7 hours of sunlight in mid-summer, you can bargain for the generation of about 440 watts.
That is 7 x 75 watt = 525 watt.
Now you allow for a loss of 15% and you get 525 X 85/100 = 446, 25 watts.
Ignore the 6.25 and you get a fair 440 watt.
Maximum Power: 75W.
Open-Circuit Voltage (Voc): 21.7V.
Optimum Operating Voltage (Vmp): 17V.
Optimum Operating Current (Imp): 4.4Amp.
Short-Circuit Current (Isc): 4.8Amp.
Dimensions: 1200mm x 527mm x 34mm
(47.25" x 20.75" x 1.25")
The 75 watt solar panel comes with a limited warranty for 25 years on power output.
Any other situation where you need to keep a 12-volt battery charged up and ready for use.
Some people complain that they do not get the greatest
output when using the panels. We must remember though that ideal condition is
mid-summer. Also when the sun shines perpendicular to the panel.
The real output varies depending on where you stay and
what season it is.
If you want to angle it, it is a good idea to mount brackets on the short side. You will have to drill some holes then. Drilling holes is not a major job. Be very careful when drilling, though.
The only maintenance that you as a user have to do is making sure the cables are not damaged. This is to ensure a good working condition.
Cleaning the surface of the 75 watt solar panel is also very important. Use a damp cloth to perform this duty.
A dirty panel leads to a big drop in efficiency.
A professional person must perform all other maintenance functions.
The 75 watt solar panel has an excellent watt/dollar value.
The solar module from Siemens produces usable power and the design is safe and stable.