The maintenance required to keep your solar electric power system in working order is very minimal. With very few moving parts and with solid-state electronics, your photovoltaic system is designed to work for well beyond the warranty period. Washing the modules if/when they get dirty, and cleaning out any debris that may collect underneath them are the only maintenance tasks the homeowner has to worry about. Simply spray them off occasionally with a garden hose or sign up for an inexpensive maintenance program and they will continue to produce power for decades to come.
Frequently Asked Questions
General Solar Panel Installation Concerns
What is the average lifespan of solar panels?
Solar panels typically have a lifespan of 25 to 30 years. However, many panels can last significantly longer.
Do solar panels work on cloudy days?
Yes, solar panels do work on cloudy days. While their efficiency is reduced compared to sunny days, they can still generate electricity.
How much electricity can a typical solar panel generate?
A typical residential solar panel can generate between 250 and 400 watts of electricity per hour under standard test conditions (STC)
How long does it take to install solar panels?
The actual installation of solar panels typically takes just one to two days. However, the entire process from start to finish can take longer
Can I install solar panels myself?
Technically, yes, you can install solar panels yourself. However, it’s highly recommended to have professional installation done for several reasons
Do I need permits to install solar panels in Los Angeles?
Yes, you generally need permits to install solar panels in Los Angeles.
What is the difference between monocrystalline, polycrystalline, and thin-film solar panels?
- Monocrystalline Solar Panels Made from a single silicon crystal. Highest efficiency of the three types Typically the most expensive but offer the best long-term return on investment.
- Polycrystalline Solar Panels Made from multiple silicon crystals. Less efficient than monocrystalline but more affordable.
- Thin-Film Solar Panels Made by depositing a thin layer of photovoltaic material on a substrate. Less efficient than monocrystalline and polycrystalline. Flexible and lightweight.
How do solar panels affect property values?
Solar panels typically increase property values.
What is net metering?
Net metering is a system that allows solar panel owners to send excess electricity generated by their system back to the grid. In return, they receive credits on their electricity bill.
How does a solar PV system work?
The modules we use are a monocrystalline silicate that, when exposed to the suns’ light energy produce electricity in the form of Direst Current (DC) power. DC power is what powers your cars electronics or many other small electronic devices like cell phones and MP3 players. Your home consumes Alternating Current (AC) power, so the power generated by the solar modules has to first run through an Inverter, converting the DC power to AC. The electricity is then connected to your home through a circuit breaker in your existing electrical panel.
Am I still connected to the utility company power grid?
Yes, you will continue to be connected to the power grid by your current electrical provider. You will remain an “electric customer” however the power your solar electric system produces will reduce or eliminate your bill. At night or on a very dark or rainy day, your solar electric system may produce very little power, so your utility company will continue to sell you power as they do currently. However on a bright sunny day you will probably produce more than you consume. In this case the utility company will act as your battery system, storing your surplus power when you don’t need it and keeping it for you until you do. They will buyback your surplus energy at the same rate that it is sold to you in the form of a credit. You will continue to buy and sell credits freely until the end of the month when you settle up your bill. If you are a DWP customer you will continue to receive your water and waste bills.
Where are solar electric power systems typically installed?
At Solar Unlimited, we typically install solar electric modules on the south-facing roof of your home because the panels will be exposed to the most hours of direct sunlight per day. East and West facing roofs are also usable but slightly less efficient. In most cases north-facing roof are not used for solar electric. It is important to note that solar electric systems should not be installed in areas where they might be significantly shaded during the day.
What rebates and tax credits are currently available?
There is currently a 30% Federal Tax Credit that is applied to your Federal Income Tax bill. This tax credit covers 30% of your total out of pocket cost. This is a tax credit, not a deduction, you simply subtract the tax credit from the tax you owe or add it to your tax refund. While most people (about 99%) qualify for the full 30%, we recommend that you talk to your CPA or a qualified and licensed tax consultant before going forward with a solar purchase. Solar Unlimited clients do pay this portion of their solar cost at the time of installation, and the tax credit is applied to your Federal Income Tax bill. The California/CSI solar rebate program has ended for Edison customers however there are still some rebates available to DWP and some municipality customers. (check with your utility provider for details).
Will a photovoltaic (PV) solar electric system save me money?
Yes! The installation of solar PV system will reduce your monthly electric bill by 50 – 100% depending on the size of the system. A solar electric system also adds value to your home. A recent study of over 72,000 home sales concluded that the “average premium” for existing homes with PV is about 90 % to 110% of todays average PV installation cost. Your solar energy system will hedge against rising energy costs for as long as you own your solar powered home. Your roof will become a mini power plant, producing energy for a fraction of the cost of your current utilities.
How much will my system cost?
Installed system pricing is highly site specific. Some of the factors that determine price include:
- Size of electric bill (and the amount you want to offset)
- Location of your home
- Shape, height and slope (pitch) of your roof
- Roof accessibility
- Existing electrical service, sub-panel and electrical equipment
- State and local incentives that may apply, in addition to the 30% federal investment tax credit
As an example, a typical 2,500 square foot home with moderate electricity usage (an electric bill of about $175 per month) would require a 4kW system. The cost of installation would be about $18,000 to $22,000 before state and federal rebates and approximately $12,000 to $16,000 after rebates.
How do I maintain my solar system?
Solar Panel System Components
What is an inverter, and how does it work?
Inverters: The Bridge Between Solar Panels and Your Home
What is a charge controller?
A charge controller is a vital component in a solar power system, especially for off-grid systems. It regulates the amount of electricity that flows from the solar panels to the batteries.
Do I need batteries for my solar panel system?
Not necessarily.
What is the difference between on-grid and off-grid solar systems?
ON Grid : Connected to the utility grid: Your solar system is tied into the main power grid.
Off Grid : Independent of the utility grid: Your system operates entirely on solar power.
What is a solar panel mounting system?
A solar panel mounting system is the framework that securely attaches solar panels to your roof or ground. It’s crucial for the performance and longevity of your solar system.
Solar Panel Performance and Efficiency
How does temperature affect solar panel efficiency?
Higher temperatures actually decrease the efficiency of solar panels.
What is the degradation rate of solar panels?
Solar panel degradation refers to the gradual decrease in their power output over time.
How does shade affect solar panel performance?
Shade can significantly impact the performance of your solar panels.
What is the payback period for solar panels in Los Angeles?
The average payback period for solar panels in Los Angeles is between 5 to 7 years. This means that you can expect to recoup your initial investment in that timeframe through savings on your electricity bill.
How much electricity can I generate with a solar panel system?
The amount of electricity you can generate with a solar panel system depends on several factors
Solar Panel Installation and Maintenance
How much space do I need for solar panels?
The amount of space required for solar panels depends on the size of your system. A typical residential system might need anywhere from 250 to 1,200 square feet of roof space.
Can I install solar panels on a flat roof?
Yes, you can definitely install solar panels on a flat roof. In fact, flat roofs can often be ideal for solar panel installations because they provide a large, unobstructed surface.
How often do solar panels need cleaning?
Typically, solar panels need cleaning 2-4 times a year. However, the frequency can vary based on your location’s climate and environment.
What kind of maintenance do solar panels require?
Solar panels are remarkably low-maintenance. The primary tasks involve:
Cleaning, Inspection, Monitoring & Professional maintenance
What happens if a solar panel is damaged?
If a solar panel is damaged, it can significantly impact your system’s efficiency. The extent of the damage will determine the necessary course of action.
Solar Panel and Environment
Are solar panels environmentally friendly?
Yes, solar panels are generally considered environmentally friendly.
Its Renewable energy, Zero emissions, Reduced reliance on fossil fuels & Improved air quality
How do solar panels contribute to climate change mitigation?
Solar panels play a crucial role in mitigating climate change by reducing greenhouse gas emissions
What is the carbon footprint of solar panel production?
While solar panels are a clean energy source during operation, their production does have a carbon footprint.
How do solar panels impact wildlife?
While solar panels are a cleaner energy source compared to fossil fuels, they can still have some impacts on wildlife
Can solar panels be recycled?
Yes, solar panels can be recycled. As the solar industry grows, so does the importance of recycling old panels to recover valuable materials and minimize environmental impact.
Solar Panel and Electricity Bills
How much can I save on my electricity bill with solar panels?
The amount you can save on your electricity bill with solar panels depends on several factors
System size, Electricity rates, Sun exposure, Energy consumption, Net metering & Incentives. Typically, homeowners can save anywhere from 20% to 70% on their electricity bills. In some cases, with optimal conditions and high electricity rates, it’s possible to eliminate electricity bills altogether.
Will solar panels eliminate my electricity bill entirely?
While it’s possible to significantly reduce or even eliminate your electricity bill with solar panels, completely eliminating it entirely is challenging but not impossible.
Can I sell excess solar electricity back to the grid?
Yes, in many places, you can sell excess solar electricity back to the grid. This process is known as net metering.
What happens to my solar panel system during a power outage?
Typically, a standard grid-tied solar panel system will shut down during a power outage. This is a safety precaution to protect utility workers repairing the grid.
Can I use solar power for electric vehicles?
Yes, you can definitely use solar power to charge your electric vehicle (EV).
Solar Panel for Businesses
Are solar panels suitable for businesses in Los Angeles?
When you have solar panels, it’s essential to have adequate homeowners insurance coverage. Here’s what to look for
What are the benefits of solar panels for commercial buildings?
Solar panels offer numerous advantages for commercial buildings:
Significant cost savings, Increased property value, Tax incentives and rebates, Hedge against rising energy costs, Reduced carbon footprint, Sustainable energy, Improved air quality, Energy independence, Hedge against power outages, Positive public image, Low maintenance
How can solar panels help businesses save money?
Solar panels can significantly reduce a business’s operational costs in several ways:
Direct cost savings, Hedge against rising energy costs, Enhanced asset value, Financial benefits, Reduced reliance on the grid, Predictable energy costs, Improved cash flow
What are the incentives for businesses to install solar panels in California?
California is a leader in solar energy adoption, offering a variety of incentives to encourage businesses to go solar:
Investment Tax Credit (ITC), Self-Generation Incentive Program (SGIP), Net Energy Metering (NEM), Property Tax Exemptions, Local Utility Incentives
How can I determine the optimal size of a solar panel system for my business?
Determining the optimal size of a solar panel system for your business involves several factors:
Gather energy usage data, Identify peak usage times, Calculate average daily energy consumption
