What does off-grid and on-grid mean ?

On-grid simply means solar power equipment (array or solar panel) is connected to the electrical grid, while off-grid refers to systems that are not connected to the grid and therefore store the generated power for later use.

Why is my solar panel under producing ?

Solar panel performance may be hindered for a number of reasons. Most commonly environmental conditions such as indirect sunlight, temperature rise, cloudy sky, and dirt and stain build up on the top glass will cause a reduced power output.

How should I connect solar panels in my electrical circuit (series vs parallel)

Connecting solar panels in series will have the effect of adding up their operating voltage output, while system current output will be the same as that for one panel. While, connecting solar panels in parallel will have a different effect;

How many solar panels do I need ?

To determine solar panel needs, calculate the power load (Watts) and capacity (Watt-hours). Size the battery bank based on minimum capacity, then adjust panel quantity or power input accordingly.

What is the meaning of 12V in the product title，Why is this value different from the voltage of the solar panel？

When you open the product page, you will see a title like "xxx Watt 12 Volt Solar Panel". The "12V" here does not refer to the voltage of this solar panel (VOC or VMP), but to the fact that one xxxW solar panel is suitable for 12V system.

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Renogy Solar Panel

Product ID: 289047188

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Details

Brand
Renogy
Material
Aluminum Glass
Product dimensions
106.2L x 53.1W
Item weight
5.9 kg
Efficiency
22%

⚡100W high power output

🔋22% PERC cell efficiency

🛡️IP65 all-weather durability

Description

☀️ Harness the sun like a pro—power your lifestyle with Renogy’s elite 100W solar panel!

COMPACT YET MIGHTY - Lightweight and space-smart design delivers stable 500Wh daily output without the bulk.
POWER YOUR FREEDOM - 100 watts of clean, reliable solar energy to keep you off-grid and ahead of the curve.
NEXT GEN SOLAR TECH - Cutting-edge 9 bus-bar and half-cell design maximizes energy capture and minimizes loss.
PLUG PLAY SIMPLICITY - 20 pre-drilled mounting holes and MC4 connectors make installation a breeze—get powered up fast.
BUILT TO BRAVE THE ELEMENTS - IP65-rated with corrosion-resistant aluminum and tempered glass for decades of weatherproof performance.

The Renogy 100W Monocrystalline Solar Panel features advanced PERC cells with 22% efficiency, a durable IP65-rated build for all-weather resilience, and a lightweight, compact design. Equipped with 9 bus-bar half-cell technology and 20 pre-drilled mounting holes, it ensures fast installation and reliable off-grid power generation, backed by a 10-year workmanship warranty and 25 years of 80% output guarantee.

Specifications

Color	Single 100W
Size	100W Single Panel
Style	Solar Panel
connector-type	MC4
Weight	14.3 Pounds
Material Type	Monocrystalline,Aluminum,Tempered Glass,Tributyl Tin
Number of Items	1
Power Source	Solar Powered
Features	Compact, high-efficiency, superior quality material, advanced solar cell technology, all-weather durability, easy installation
Wattage	100 watts
Included Components	1x100w solar panel
Batteries Included?	No
Brand	Renogy
Manufacturer	Renogy
Item model number	Renogy Solar Panels 100 Watt 12 Volt
Product Dimensions	106.17 x 53.09 x 3.56 cm; 5.9 kg
ASIN	B07GF5JY35

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