☀️ Solar PV Panel Calculator
Estimate how many solar panels you need based on your energy usage, location, and panel type
| Region / City | Peak Sun Hrs/Day | Annual kWh/kW | Rating |
|---|---|---|---|
| Phoenix, AZ | 6.5 hrs | ~2,300 kWh | Excellent |
| Las Vegas, NV | 6.3 hrs | ~2,200 kWh | Excellent |
| Los Angeles, CA | 5.6 hrs | ~1,950 kWh | Very High |
| Denver, CO | 5.5 hrs | ~1,900 kWh | High |
| Miami, FL | 5.3 hrs | ~1,850 kWh | High |
| Dallas, TX | 5.2 hrs | ~1,800 kWh | High |
| New York, NY | 4.4 hrs | ~1,500 kWh | Average |
| Chicago, IL | 4.2 hrs | ~1,450 kWh | Average |
| Seattle, WA | 3.5 hrs | ~1,100 kWh | Below Avg |
| London, UK | 3.0 hrs | ~950 kWh | Low |
| Monthly Usage | System Size (kW) | Panels Needed (400W) | Roof Area Needed |
|---|---|---|---|
| 300 kWh / mo | ~2.5 kW | 6–7 panels | ~120 sq ft |
| 500 kWh / mo | ~4.0 kW | 10 panels | ~175 sq ft |
| 750 kWh / mo | ~6.0 kW | 15 panels | ~263 sq ft |
| 900 kWh / mo | ~7.5 kW | 19 panels | ~333 sq ft |
| 1,200 kWh / mo | ~10.0 kW | 25 panels | ~438 sq ft |
| 1,500 kWh / mo | ~12.5 kW | 32 panels | ~560 sq ft |
| 2,000 kWh / mo | ~16.5 kW | 42 panels | ~735 sq ft |
| Appliance | Watts | Hrs/Day Avg | kWh/Month |
|---|---|---|---|
| Central Air Conditioner | 3,500W | 6 hrs | ~630 kWh |
| Electric Water Heater | 4,500W | 3 hrs | ~405 kWh |
| Electric Vehicle Charger (L2) | 7,200W | 2 hrs | ~432 kWh |
| Refrigerator | 150W | 24 hrs | ~108 kWh |
| Clothes Dryer | 5,000W | 1 hr | ~150 kWh |
| Pool Pump | 1,500W | 8 hrs | ~360 kWh |
| LED Lighting (home) | 200W | 5 hrs | ~30 kWh |
| TV + Entertainment | 250W | 5 hrs | ~37 kWh |
solar pv panel are devices that seize energy from the sun and turn it into pure electricity. One also calls them solar pv panel. Typical solar pv panel are made up of several cells done from layers of special material, usually silicon.
When sunshine hits that material it creates flow of electricity.
What Are Solar PV Panels
The most common solar pv panel use crystalline silicon, that one finds easily and that works well. It comes in single crystal or polycrystalline form. Layers of glass and protective plastic materials surround the silicon, so that it lasts long term and resists the weather.
Aluminum frames give the panel its shape and strength.
One calls a whole solar energy setup a solar pv panel system. It has some parts that are involved. The solar pv panel themselves absorb the sunlight and convert it into electricity.
Later comes the solar inverter, that converts the direct electricity into alternating. Also, one needs batteries, cables and other electrical parts, so that the whole thing works. Basically, a solar system is a gruop of panels connected to reach the wanted output.
The efficiency of solar pv panel usually falls between 15 and 20 percent. It really matters only when the available space is limited. A 300-watt panel stays a 300-watt panel, but a more efficient model will be physically smaller than a less efficient one.
Modern solar pv panel average around 400 watts each unit, and that is the maximum production under perfectly clear sky at midday with a new panel.
Many folks believe that solar pv panel stop working after 25 years, but that is not really true. Research showed that setups from the 1980s still give more then 80 percent of their original ability. Choosing a known brand from a tier-1 producer helps to have a system that lasts 30 years or even more.
Solar pv panel installers are the specialists that assemble, mount and take care of those systems. The most common jobs happen outside on roofs, although sometimes one works in attic or crawl spaces to bind panels to the grid.
The price of solar gear, including supplies and tax, reaches around 14 055 dollars, what is about 46 percent of the whole system price. It ranges based on the chosen brand and quality. Investing in great gear can lead to bigger long term savings, but choosing the most expensive panels is not always the best idea.
The main downside of solar energy is the starting cost, although panels now cost much less than 20 years ago. Hybrid solar system, that is grid-tied solar pv panel with battery storage, becomesalways more liked.
