How many solar panels do I need for my home?

The number of panels depends on your household energy usage, roof size, and location. We help you calculate the exact requirements.

What is the lifespan of a solar panel system?

Most solar panels last 25–30 years with minimal maintenance, making them a long-term investment.

Do solar panels work on cloudy days?

Yes. While output is reduced, panels continue generating electricity even during overcast conditions.

What maintenance is required?

Solar panels are generally low-maintenance, requiring only occasional cleaning and periodic checks to ensure efficiency.

Can I install solar panels myself?

DIY solar panels are available for small projects, but professional installation is recommended for full home or business systems to ensure safety and maximum performance.

What is the solar panel?

A solar panel is a device that converts sunlight into usable electricity using photovoltaic (PV) cells. These cells capture solar energy and generate direct current (DC) power, which can be used directly or converted to alternating current (AC) through an inverter. Solar panels are widely used for homes, businesses, and off-grid applications to reduce electricity bills and reliance on traditional power sources.

How many solar panels are needed to fully power a house?

The number of panels needed depends on your home’s monthly electricity usage, your location’s sunlight hours, and the wattage of each solar panel. On average, a typical U.S. home requires 15 to 25 solar panels to be fully powered. Larger homes or homes with high-consumption appliances may require more. A licensed solar professional can calculate the exact number based on your kilowatt-hour (kWh) usage.

How are solar panels made?

Solar panels are made by assembling photovoltaic (PV) cells, which are typically manufactured from silicon. The process includes: Purifying silicon and forming it into ingots. Cutting the silicon wafers into thin slices. Treating wafers with conductive materials to create electric fields. Connecting PV cells with wiring and placing them in a protective sheet. Encapsulating the cells between tempered glass and a durable backing.This creates a weather-resistant, long-lasting panel capable of generating solar power.

How many watts is a solar panel?

Most residential solar panels range between 350 watts and 450 watts per panel, depending on the brand, cell efficiency, and technology. Commercial panels can reach 500+ watts. The watt rating indicates how much power the panel can produce under ideal sunlight conditions.

Solar Panels

About Solar Panels

Shop the full selection of solar panels at PES Supply, featuring monocrystalline, bifacial, TOPCon, and PERC modules from top manufacturers including Silfab, SEG Solar, Canadian Solar, Q CELLS, Mission Solar, Hyundai, Trina, REC, Aptos, and Thornova. Whether you are building a residential rooftop array, a commercial ground-mount system, or an off-grid cabin setup, we stock panels ranging from 330W to 700W+ to match any project size and budget.Every solar panel we sell is UL 1703 certified and backed by the full manufacturer warranty, including 12-year product coverage and 25-year linear performance guarantees. As a nationwide distributor with 50,000+ SKUs across 169 authorized brands, PES Supply offers trade pricing, expert technical support, and bulk pallet ordering for contractors and EPCs. BABA-compliant modules are available for federally funded projects. Standard delivery is 7–10 business days nationwide.Our team can help you select the right panel wattage, cell type, and frame configuration for your specific installation. Need panels for a large commercial project? Request a bulk quote for pallet and container pricing.

Solar Panels

Inverters

Storage solutions

Charge controllers

Solar Equipment

Racking

Accessories

Solar Panels

Inverters

Storage solutions

Charge controllers

Solar Equipment

Racking

Accessories

Top Rated

Hyundai HiS-S410YH(BK) 410W Bifacial Commercial Solar Panel

Hyundai HiS-S410YH(BK) 410W Bifacial Commercial Solar Panel

SKU: PES-SPS-SPL-0202

MPN NO

HiS-S410YH(BK)

Vendor:
Hyundai Energy Solutions

No reviews

Regular price $167.76 USD

Regular price Sale price $167.76 USD
Unit price per
Top Rated

Talesun TM7G54M-450 450W Bifacial Solar Panel

Talesun TM7G54M-450 450W Bifacial Solar Panel

SKU: PES-SPS-SPL-0185

MPN NO

TM7G54M-450

Vendor:
Talesun

No reviews

Regular price $185.63 USD

Regular price Sale price $185.63 USD
Unit price per
Top Rated

Aptos Solar DNA-120-BF10-440W 440W Bifacial Solar Panel

Aptos Solar DNA-120-BF10-440W 440W Bifacial Solar Panel

SKU: PES-SPS-SPL-0175

MPN NO

DNA-120-BF10-440W

Wattage

440

Vendor:
Aptos Solar

No reviews

Regular price $185.92 USD
$0.42/watt

Regular price Sale price $185.92 USD
Unit price per
Top Rated

Thornova Solar TS-BGT72(600) 600W Bifacial Solar Panel

Sold out

Thornova Solar TS-BGT72(600) 600W Bifacial Solar Panel

SKU: PES-SPS-SPL-0208

MPN NO

TS-BGT72(600)

Vendor:
Thornova Solar

No reviews

Regular price $165.76 USD

Regular price Sale price $165.76 USD
Unit price per

Sold out
Top Rated

Lesso 430C(HBB) 430W Bifacial Solar Panel

Lesso 430C(HBB) 430W Bifacial Solar Panel

SKU: PES-SPS-SPL-0206

MPN NO

430C(HBB) 54(182)

Vendor:
Lesso New Energy Co.

No reviews

Regular price $145.60 USD

Regular price Sale price $145.60 USD
Unit price per
Top Rated

CW Energy CWT550-144PMB10 550W Bifacial Solar Panel

CW Energy CWT550-144PMB10 550W Bifacial Solar Panel

SKU: PES-SPS-SPL-0194

MPN NO

CWT550-144PMB10

Vendor:
CW Energy

No reviews

Regular price $169.98 USD

Regular price Sale price $169.98 USD
Unit price per
Top Rated

Thornova Solar TS-BBT54(440) 440W Bifacial Solar Panel

Sold out

Thornova Solar TS-BBT54(440) 440W Bifacial Solar Panel

SKU: PES-SPS-SPL-0190

MPN NO

TS-BBT54(440)

Vendor:
Thornova Solar

No reviews

Regular price $158.30 USD

Regular price Sale price $158.30 USD
Unit price per

Sold out
Top Rated

Philadelphia Solar M144(HCBF)-550W 550W Bifacial Solar Panel

Philadelphia Solar M144(HCBF)-550W 550W Bifacial Solar Panel

SKU: PES-SPS-SPL-0189

MPN NO

M144(HCBF)-550W

Vendor:
Philadelphia Solar

No reviews

Regular price $148.96 USD

Regular price Sale price $148.96 USD
Unit price per
Top Rated

Thornova Solar 550W Solar Panel 144 Cells Bifacial TS-BG72(550) (Price Per Pallet Of 31 Modules)

Sold out

Thornova Solar 550W Solar Panel 144 Cells Bifacial TS-BG72(550) (Price Per Pallet Of 31 Modules)

SKU: PES-SPS-SPL-0187

MPN NO

TS-BG72(550)

Vendor:
Thornova Solar

No reviews

Regular price $6,308.50 USD

Regular price Sale price $6,308.50 USD
Unit price per

Sold out
Top Rated

VSUN 410-144BMH-DG 410W Bifacial Solar Panel

Sold out

VSUN 410-144BMH-DG 410W Bifacial Solar Panel

SKU: PES-SPS-SPL-0183

MPN NO

410-144BMH-DG

Vendor:
VSUN

No reviews

Regular price $149.69 USD

Regular price Sale price $149.69 USD
Unit price per

Sold out
Top Rated

Hyundai HiN-T435NF(BK) 435W Solar Panel

Hyundai HiN-T435NF(BK) 435W Solar Panel

SKU: PES-SPS-SPL-0168

MPN NO

HiN-T435NF(BK)

Wattage

435

Vendor:
Hyundai Energy Solutions

No reviews

Regular price $203.97 USD
$0.47/watt

Regular price Sale price $203.97 USD
Unit price per
Top Rated

Trina TSM-410-NE09RC.05 410W Bifacial Solar Panel

Trina TSM-410-NE09RC.05 410W Bifacial Solar Panel

SKU: PES-SPS-SPL-0170

MPN NO

TSM-410-NE09RC.05

Vendor:
Trina Solar

No reviews

Regular price $151.20 USD

Regular price Sale price $151.20 USD
Unit price per
Top Rated

Aptos DNA-108-BF10-410W 410W Bifacial Solar Panel

Aptos DNA-108-BF10-410W 410W Bifacial Solar Panel

SKU: PES-SPS-SPL-0138

MPN NO

DNA-108-BF10-410W

Wattage

410

Vendor:
Aptos

No reviews

Regular price $169.14 USD
$0.41/watt

Regular price Sale price $169.14 USD
Unit price per
Top Rated

Hyundai HiS-S400YH(BK) 400W Solar Panel

Hyundai HiS-S400YH(BK) 400W Solar Panel

SKU: PES-SPS-SPL-0098

MPN NO

HiS-S400YH(BK)

Wattage

400

Vendor:
Hyundai Energy Solutions

No reviews

Regular price $129.34 USD
$0.32/watt

Regular price Sale price $129.34 USD
Unit price per
Top Rated

Aptos Bifacial Solar Panel - DNA-120-BF26-370W

Aptos Bifacial Solar Panel - DNA-120-BF26-370W

SKU: PES-SPS-SPL-0070

MPN NO

DNA-120-BF26-370W

Wattage

370

Vendor:
Aptos

No reviews

Regular price $519.55 USD
$1.5/watt

Regular price Sale price $519.55 USD
Unit price per
Top Rated

LONGi Solar Panels - Longi 355W Solar Panel - LR4-60HPB-355W

LONGi Solar Panels - Longi 355W Solar Panel - LR4-60HPB-355W

SKU: PES-SPS-SPL-0029

MPN NO

LR4-60HPB-355W

Wattage

355

Vendor:
LONGi Solar

No reviews

Regular price $299.35 USD
$1/watt

Regular price Sale price $299.35 USD
Unit price per
Top Rated

Trina Solar (410W) Monocrystalline Solar Panel - TSM-410DEG15MC.20(II)

Trina Solar (410W) Monocrystalline Solar Panel - TSM-410DEG15MC.20(II)

SKU: PES-SPS-SPL-0026

MPN NO

TSM-410DEG15MC.20(II)

Wattage

410

Vendor:
Trina Solar

No reviews

Regular price $235.25 USD
$0.5/watt

Regular price Sale price $235.25 USD
Unit price per
Top Rated

BYD NLBK-36 555-580W 580W Solar Panel

Sold out

BYD NLBK-36 555-580W 580W Solar Panel

SKU: PES-SPS-SPL-0162

MPN NO

NLBK-36 555-580W

Wattage

580

Vendor:
BYD

No reviews

Regular price $192.70 USD
$0.33/watt

Regular price Sale price $192.70 USD
Unit price per

Sold out