Solar Panels Cost $12k-$22k in Loudoun County, VA | August, 2025
High Power Bills?
Reduce or replace your electricity bill with solar
No data available
How much do solar panels cost in Loudoun County, VA in 2025?
No data available
For the month of August, 2025, the price per watt of a solar panel installation in Loudoun County, VA is $3.53/W.
Based on the cost per watt, we are able to conclude that for every 1 kW (1000 watts) of solar power capacounty will require an investment of $3,530 for installation. A 5 kW solar system in Loudoun County is typically about $12,355 after accounting for the 30% federal income tax credit. It's important to note that a higher capacity system could be required to adequately cover your energy consumption.
On the left-hand side, you can choose your county to find out the typical roof size and the maximum capacity for solar panels in residences in your area. Outlined below are the costs, payback period, and 20-year average savings for a 5 kW system in your county.
Average out-of-pocket cost for a 5 kW system The upfront amount spent to buy and install solar.
Loudoun County: $12,355US Average: $12,523
Average Payback Period The number of years until you break even on the solar investment.
Loudoun County: 7 yearsUS Average: 7 years
Average Net 20-year savings The total amount of money saved over 20 years minus the out-of-pocket cost.
Loudoun County: $18,866US Average: $17,429
Solar Potential in Loudoun County
Estimated system size and solar electricity production per median viable roof in Loudoun County.
Roof size 697sq. ft.
Capacity 9.75kW DC
Electricity 12.1kkWh AC per yr.
Electricity Costs in Loudoun County, VA & What that Means for Your Solar Panel Pricing
Energy consumers in Loudoun County typically pay 152.15 per month for electricity, with an average monthly usage of1,068 kWh. Compact living spaces, such as apartments and cottages, are also considered in the statistics cited in the prior sentence.
As of August 2025, the average rate for electricity per kWh in Loudoun County, VA amounts to 14.25¢.
Currently, a 9 kW setup will be priced at around $31,770upfront, but thanks to the federal tax credit, you receive 30% back, reducing the total to $22,239.
Go Solar for less than your cell phone bill.
Average solar panel costs by system size in Loudoun County
Available below and to the left is the price structure for multiple sizes of solar panel systems installed in Loudoun County. The initial cost for larger solar systems is greater, but they also offer more significant electricity savings and higher income tax credits.
View a cost benefit analysis in the solar panel cost calculator to the right and below, for an average electric bill of $152.15 in Loudoun County. To get customized results, easily adjust the $152.15to reflect your average electricity bill amount.
System Size
Roof Size Min. space required
Electricity Value Annual Production
Est. Price
System Size 5kW
Roof Size Min. space required
358 ft²
Electricity Value Annual Production $1,034 a year
Est. Price
$12,355
Savings from a 5kWthis system
Est. yearly production 7,384 kWh
Est. monthly savings $86
Full payback in 7 years
Environmental Impacts
Reduces CO2 emissions by 3.12 tons a year
Equivalent to planting 143 trees a year
Equivalent to driving 7,717 mi less a year
System Size 6kW
Roof Size Min. space required
429 ft²
Electricity Value Annual Production $1,240 a year
Est. Price
$14,826
Savings from a 6kWthis system
Est. yearly production 8,861 kWh
Est. monthly savings $103
Full payback in 8 years
Environmental Impacts
Reduces CO2 emissions by 3.74 tons a year
Equivalent to planting 172 trees a year
Equivalent to driving 9,260 mi less a year
System Size 7kW
Roof Size Min. space required
501 ft²
Electricity Value Annual Production $1,447 a year
Est. Price
$17,297
Savings from a 7kWthis system
Est. yearly production 10,337 kWh
Est. monthly savings $121
Full payback in 9 years
Environmental Impacts
Reduces CO2 emissions by 4.36 tons a year
Equivalent to planting 200 trees a year
Equivalent to driving 10,803 mi less a year
System Size 8kW
Roof Size Min. space required
572 ft²
Electricity Value Annual Production $1,654 a year
Est. Price
$19,768
Savings from a 8kWthis system
Est. yearly production 11,814 kWh
Est. monthly savings $138
Full payback in 11 years
Environmental Impacts
Reduces CO2 emissions by 4.99 tons a year
Equivalent to planting 229 trees a year
Equivalent to driving 12,347 mi less a year
System Size 9kW
Roof Size Min. space required
644 ft²
Electricity Value Annual Production $1,861 a year
Est. Price
$22,239
Savings from a 9kWthis system
Est. yearly production 13,291 kWh
Est. monthly savings $152
Full payback in 12 years
Environmental Impacts
Reduces CO2 emissions by 5.5 tons a year
Equivalent to planting 253 trees a year
Equivalent to driving 13,616 mi less a year
Loudoun County Solar Panel Installation Incentives & Rebates | 2025
If you're a rural small business or farm owner, you might be eligible for REAP Grant coverage of between 80% and 100% for your solar or wind turbine project. Believe you fall into this category? Verify your qualification with our REAP Grant eligibility tool.
The 30% federal income tax credit for residential solar is offered to most homeowners, which makes solar energy a wise choice in numerous regions nationwide. There are also a range of state and local efforts aimed at increasing solar energy use.
Various utilities and government organizations in Virginia have 9 solar rebate and incentive programs.
Solar incentives in VAIncentive Description Value
Commercial Solar Property Tax Exemption
Value:Varies
In June of 2000, Austin passed Resolution No. 000608-43, mandating that all newly constructed dwellings must be built to conform with the U.S. Green Building Council Leadership in Energy and Environmental Design (LEED) Silver. This policy was further revised and enhanced in November 2007 under Resolution No. 20071129-045 to set two additional criteria for instigating the LEED Silver requirement for both new construction and major renovations. Likewise, home renovations smaller in scope but costing $300,000 or more and requiring work in the LEED energy and atmosphere, material and resources, must, at a minimum, necessarily achieve LEED Silver certification.
Net Metering
Value:Varies
In Virginia, renewable energy customers may enroll in net metering contracts to receive compensation for using their generation equipment. Net metering is standardized for private and cooperative electric utilities, but not for local public utilities. Upon approval of a customer's net metering application, their utility will install a bidirectional meter onto the system to measure net excess generation (NEG) sent back to the grid. Customers will be compensated per kW of NEG at a fixed avoided-cost rate. Fees may apply depending on system capacity and jurisdiction. Additional information is available from individual utilities.
Local Option - Residential Property Tax Exemption for Solar
Value:Varies
In Virginia, local and county governments may choose to promote solar energy adoption and recycling equipment through property tax incentives. Participating localities may implement either partial or total exemptions on any equipment used to generate, store, or distribute solar power or energy for heating/cooling. Any solar PV and active/passive water or space heater may qualify. Additional information is available from local governments.
Energy Project and Equipment Financing
Value:Varies
Over the roughly the last two decades, The City of Austin instituted several ambitious energy efficiency codes, policies, and programs. In February 2007, its city council signed into law the Austin Climate Protection Plan that promoted the drafting of a wide diversity of new building codes intended to reduce energy consumption in new single-family homes by 65% and other buildings both private and public, by 75%. Prior to this, Austin introduced the first green building program in the U.S. with the Austin Energy Green Building (AEGB) that proposed a five-star rating system for assessing energy efficiency. While buildings must meet the prescriptive code requirements of the 2015 International Energy Conservation Code, Chapter 4, regarding the Commercial rating, meeting the series of Basic Requirements (required for all AEGB rated projects) are considered voluntary.
City of Danville - Net Metering
Value:Varies
The city of Danville has set local net metering standards for interconnected renewable energy systems. To begin net metering, a solar energy system owner should notify the city at least 30-60 days before interconnection (depending on their system's capacity.) The city requires compliance with IEEE/UL standards, minimum liability insurance coverage, and the installation of external disconnect switches. Once all interconnection standards are satisfied, net excess generation will be credited to the owner's energy bill at an avoided-cost rate. Additional information is available from the city website.
Small Business & Non-Profit Loan Program
Value:Varies
In 2009, Forth Worth voted to adopt the 2009 International Energy Conservation Code to include such amendments as the City Building Code. In accordance with State Law, The City of Forth Worth presently enforces the 2015 International Conservation Code with all amendments thereto. Both the 2015 International Energy Conservation Code with amendments and Code 2013 ASHRAE 90.1 are effectively used in Forth Worth to maintain state-level compliance with the Texas energy conservation mandate for all commercial buildings within the state.
Local Option- Renewable Energy Machinery and Tools Property Tax Exemption
Value:Varies
In 2014, Houston passed a municipal law, Ordinance No. 2014-5 in the year 2014 that made it a requirement for new residential construction to exceed the energy efficiency requirements under the 2009 International Energy Conservation Code (IECC) by 15%. The City of Houston then legislated to bring itself in alignment with Chapter 11 of the 2015 IECC and its amendments, per state law. Before that time, in 2008, Houston effectuated the City of Houston Commercial Energy Conservation Code based on ANSI/ASHRAE/IESNA Standard 90.1-2004.
Green Job Creation Tax Credit
Value:Varies
Oncor residential customers can take advantage of rebates offered by its utility, Oncor Electric Delivery, after installing a photovoltaic (PV) system on their properties. Residential homeowners, service providers, and third parties, alike, are eligible for the rebate. To qualify, the home must have Oncor Systems as its electric delivery service provider, the systems are required to be new, connected to the grid, and meet all applicable code requirements. Installations must be performed by approved service providers who meet the program’s eligibility requirements.
VirginiaSAVES Green Community Loan Program
Value:Varies
Members of CoServ Electric Cooperative can access a rebate program available to them after installing a solar energy system on their property. To qualify, customers are required to execute an interconnection agreement (with net metering) for on-site generation with CoServ. All energy that’s acquired from generation produced by the system is given to CoServ without compensation. Concerning this rebate program, interested parties should contact the utility directly or visit their homepage for the most up-to-date information.
Are solar panels worth it in Loudoun County, VA?
Homeowners in Loudoun County who expect to live in their residence beyond the payback period of their solar system will find solar panels an obvious choice. In Loudoun County, VA, the installation of a 5 kW solar system can save you an average of $24,161 over 20 years, with an average break even point of 7 years.
The cost of not having solar panels in Loudoun County, VA
Forgoing the installation of solar panels or an alternative backup energy source results in missing the earlier mentioned savings and total reliance on your electric utility for power. Several recent examples in the news have revealed that total dependence on your utility company isn't always ideal.
Yearly, the utilities in Loudoun County have recorded about 0.95 outages per customer. Typically, outages have an average duration of 65.09 minutes. However, during significant events such as tornadoes, grid management errors, or wildlife damage, these times can drastically increase.
View the info below to see the number of current electricity customers without power in Loudoun County.
Owning a solar panel system, with or without a backup battery, could reduce the strain of any future outages you may encounter.
Power Outages
Currently, 0 customers are being tracked in Loudoun County.
What impacts the cost of solar panels in Loudoun County, VA?
Your Energy Needs - The cost per watt decreases with larger solar panel systems, even if the upfront cost is greater. Individuals often realize that installing a solar system to offset their electric bill is a beneficial decision, resulting in the most savings.
Make & Model - Solar panels are offered in a range of makes and models. The potential system preferences of your selected installer make it crucial to pick a highly rated company. For a better long-term experience, buyers should consider superior quality makes and models.
Solar Panel Type - The industry standard is now monocrystalline panels, and rightly so. They have a higher price but are better at generating energy. The majority of solar panel installers use panels made of this material.
Your Property - Each property and home presents unique challenges. Trees, irregular terrain, or other impediments may complicate the installation process. Today, the many solar installers can evaluate your home with satellite images and factor in these factors in the preliminary cost estimate.
Labor Rates - The varied employee wages paid by companies cause costs that consumers ultimately paying . Companies that invest in higher wages often see higher reviews for their work and customer service.
Permitting & Interconnection - Permitting and utility interconnection fees vary locally and will impact your installation cost. Quality local installers will include these figures in your first estimates to ensure transparency.
See what solar panels cost in other Loudoun County cities
Solar systems for selling electricity back to the grid.
Expertise in consulting on advantageous financing for solar.
Loudoun County, VA Solar Panel Cost FAQs
As of August, 2025, the average per-watt cost for solar panels in Loudoun County, VA is $3.53/W. In Loudoun County, VA, the cost of installing a 5 kW solar panel system is approximately $12,355 after applying the federal tax credit.
Virginia offers 9 different rebates and incentives from a range of utilities and government organizations. In addition, nearly all people are eligible for the 30%federal tax credit.
Even though paying cash yields the most savings, there are now several financing options for solar panels that also are cost-effective. Initial quotes from installers will frequently detail information about available financing options.
Yes, the payback period for 5 kW solar energy systems in Loudoun County, VA averages 7 years, with electricity savings of about $24,161 over 20 years.
Savings from 
Environmental Impacts 
