How Solar Panels Work

How Solar Panels Work

If you’ve ever wondered how solar panels work, you’ve come to the right place. Solar energy works by capturing the sun’s energy and turning it into electricity for your home or business. Our sun is a natural nuclear reactor. It releases tiny packets of energy called photons, which travel the 93 million miles from the sun to Earth in about 8.5 minutes. Every hour, enough photons impact our planet to generate enough solar energy to theoretically satisfy global energy needs for an entire year!

Currently, photovoltaic power accounts for only five-tenths of one percent of the energy consumed in the United States. But solar technology is constantly improving and as more people convert, the cost begins to drop. Because of this, going solar is more affordable and accessible than ever. By going solar, you’ll own a product that will replace a lot of the kiloWatt-hours you need, so you can supply yourself instead of relying entirely on utility power – this is all possible thanks to photovoltaic cell technology, developed in the 1840s and now advanced enough to help you save significantly on your electric utility costs.

So What are Photovoltaic Cells?

The purpose of a photovoltaic cell is to take rays from the sun and use that light to make an electric current. That current can run things in your home, like the device you’re using to read this webpage!

The materials in the photovoltaic cell allow it to do its job. Silicon is used in the cells because of one characteristic property: when light photons hit it, the atomic particles that comprise the silicon become excited at a tiny micro level, and electrons from the silicon start moving, creating a flow. Metallic connections allow the current to flow from the cells of a solar panel to wires that bring it where it needs to go. A conductive, supportive backing is usually found on the back of the cell – if it’s made of copper it will be the most durable over time.

The grid-like pattern of a solar panel is made up of individual cells, quilted together into a larger unit. Panels can be combined into an array to fill up as much of a roof or open yard as the energy user needs. The rating of a single solar panel (also sometimes called a solar module) is given in Watts, and the rating of a solar array or an entire solar project is given in kiloWatts, or thousands of Watts, to simplify the large wattage numbers involved!

As it operates over time, a complete solar energy system will produce power measured in kilo Watt-hours. This measure might be familiar to you if you’re in the habit of closely scrutinizing your electric bill from your utility company – it’s the unit they use to measure the volume of electricity your home has used during your billing period. Your electric costs without solar are typically determined by your kiloWatt-hour usage times your electric rate, plus any fixed monthly fees.

How Solar Panels work with Solar Electric (Photovoltaic) SystemsHow-Solar-PV-Works

  1. The process of converting the sun’s rays into usable electricity is relatively simple. The sun’s rays are collected by the photovoltaic (solar) panels. The panels create DC power, which is sent to the inverter.
  2. The inverter converts the DC power to AC power, which is the type of power your home can utilize. The AC power is fed to the main meter panel.
  3. Your home consumes the AC power generated by your solar system. Any excess power is sent back to the utility producing a monetary credit. Solar systems save and earn you money!


Power Your Home With Solar

Powering your home with solar is the first step to choosing your energy future, and learning how solar panels work is the first step! If you are tired of paying continually increasing utility bills or frustrated with being forced to buy energy from coal-burning plants, then solar power enables you to take back control from your utility provider.


Frequently Asked Questions About Solar:

How exactly does going solar and a solar system itself work?
Solar energy begins with sunlight that hits the panels to produce energy that flows into your inverter, which converts the DC energy into Alternating Current (AC) electricity that can be used to power your home. This same energy is then consumed when powering your home’s light, appliances, gizmos, and gadgets. If you feel your home isn’t producing the energy that it needs, the utility will fill in the gaps. If you system produces more energy than needed, that energy will go to the grid and your utility will credit you for the unused power.
How many solar panels do I need for my home?
At Renu Energy Solutions we design our solar panel systems size based on three main factors.

Roof-size/available space: When we look at the size of your roof and the space available, we gather data that tell us the maximum number of solar panels your home or site can hold and we even consider shading. We use a software “Suneye” which takes a 360 picture of your roof and we use this photo to determine if your home is a good candidate for solar.

Energy Usage: When we determine energy usage we look at your past electrical bills from over the course of a year to make sure your system isn’t too big or too small.

Your Budget: We take your budget seriously and most importantly, we want you to be satisfied with our services. We take your feedback on how much you want to spend so that we can size your system appropriately.

What is solar net-metering?
Net-metering is a type of utility policy that controls how your system is connected to the grid and how you are credited for the solar energy you produce.
Does Duke Energy offer net-metering?
Yes! Both Duke Energy Carolinas and Duke Energy Progress territories in NC offer net-metering when your homes goes solar. If you are interested in net-metering, no worries. Our team will guide you through the process as certain utilities have a different application procedure.
Curious about the cost of a home solar system?
When our clients ask this question, we immediately tell Tham about the federal tax credit that comes with going solar. The Federal tax credit for going solar is 26% in 2020. For example, if the total cost of you system was $22,000, when you subtract 26% you are then left with a %16,280 solar system. There is not set price for a home going solar as there are many factors that contribute to the total cost. The price of a solar home can range from $10k to $100k based on the size of your roof, energy usage, aesthetic preferences, and of course, budget.

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Home Solar System

The amount of electricity that a solar energy system will produce will depend on a number of factors, including the location of the home, system design, and much more. Ideally, a home with an unobstructed south-facing view will produce more than enough energy.



Energy Storage

Installing battery backup along with your solar energy system for home or business is a smart move and can increase the value of your clean energy investment as well as peace of mind when a grid outage occur.




EV Chargers

Electric cars – with no gas engine at all – now work for most budgets and lifestyles. With more and more models to choose from, drivers are choosing electric vehicles (or EVs) than ever before!




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