Quick Answer: Solar panels in winter Virginia weather keep producing electricity, but they make less of it: a typical system generates about half as much in December as it does in July. Shorter days and a lower sun cause the drop. Cold air does not, and panels convert sunlight slightly more efficiently when they are cool. Because Virginia net metering balances your production over 12 months, a lower winter total is expected and planned for.
Key Takeaways
- A modeled 8 kW south-facing system in Virginia Beach produces about 560 kWh in December and about 1,200 kWh in July, so December comes in at roughly 47% of the summer peak.
- Depending on roof pitch, direction, and shade, most Virginia homes can expect December output of roughly 45-60% of July.
- Fall is a gradual decline. September and October still deliver about three-quarters of peak production.
- December through February accounts for about 17% of a Virginia system’s yearly production. June through August accounts for about 32%.
- Cold weather helps panel efficiency. Short days, a low sun angle, clouds, and occasional snow cover are what reduce output.
- Net metering credits earned in sunnier months are applied to the months when your home uses more than it produces.
How Much Do Solar Panels in Winter Virginia Conditions Produce?
Solar panels in Virginia produce roughly half as much electricity in December as in July. Using the National Renewable Energy Laboratory’s PVWatts model for Virginia Beach, an 8 kW south-facing system makes about 560 kWh in December compared with about 1,200 kWh in July.
The table below scales that model to an 8 kW system. It assumes a fixed roof mount facing due south at a 20-degree tilt with 14% system losses, and it is an illustration. For the basics behind these figures, see how much electricity a solar panel produces.
| Season | Months | Modeled production (8 kW) | Share of the year |
| Spring | March-May | 3,120 kWh | 28% |
| Summer | June-August | 3,480 kWh | 32% |
| Fall | September-November | 2,500 kWh | 23% |
| Winter | December-February | 1,900 kWh | 17% |
| Full year | 11,000 kWh | 100% |
The takeaway: winter is the smallest slice of the year, but it is far from zero. Nearly a fifth of annual production still arrives between December and February, and spring makes almost as much as summer.
Fall solar production in Virginia: a gradual decline
Fall output in Virginia eases down month by month. In the same model, September produces about 77% of July’s total, October about 73%, and November about 58%. Mild temperatures and frequent clear skies in early fall keep panels working well even as the days shorten.
Winter solar production in Virginia: the low point
December is the lowest month, at about 47% of July in the model. January rises to about 53% and February to about 58%. A steeper south-facing roof captures the low winter sun more directly and can land closer to 60%. A shallow, east- or west-facing, or partly shaded roof will sit lower.
Why Do Solar Panels Produce Less in Virginia in Fall and Winter?
Solar panels produce less in Virginia in fall and winter because the sun is up for fewer hours and sits lower in the sky. Clouds, new shade, and debris add smaller losses on top.
Shorter days
Richmond gets about 9 hours and 34 minutes of daylight at the December solstice, compared with about 14 hours and 45 minutes in late June. That is roughly five fewer hours for panels to collect light each day.
A lower sun angle
At Richmond’s latitude, the midday sun climbs to about 76 degrees above the horizon in late June and only about 29 degrees in late December. Low-angle sunlight passes through more atmosphere and strikes panels less directly. This is why a cloudless January day still produces less than a cloudless June day.
Winter shade from trees and rooflines
A low sun casts long shadows. A chimney, dormer, or neighbor’s tree line that never touches your panels in July can shade part of the array for hours in December. Bare branches block less light than leafy ones, but they still reduce output.
Clouds, leaves, and debris
Panels generate electricity from diffuse light on overcast days, at a lower level than under clear skies. In fall, leaves can settle on panels and block cells until rain or wind clears them.
Does Cold Weather Reduce Solar Panel Output in Virginia?
No. Cold weather does not reduce solar panel output, and it slightly improves it. Solar cells convert light, and they operate more efficiently at lower temperatures.
Manufacturers measure this with a temperature coefficient, which is the percentage of power a panel gains or loses for each degree its cells run below or above 77°F (25°C). For modern silicon panels, the figure is typically a fraction of a percent per degree Celsius. On a bright 35°F morning, a panel can run closer to its rated output than it does on a 95°F July afternoon.
The gain is real but modest. It does not make up for five fewer hours of daylight, which is why winter totals still fall.
Do Solar Panels Work When It Snows in Virginia?
Solar panels work in snowy weather, but a panel fully covered by snow stops producing until the snow slides off or melts. According to the U.S. Department of Energy, a light dusting has little effect because wind clears it, while heavy accumulation blocks generation.
For most of Virginia, snow is a matter of a few days each winter. Average annual snowfall under the 1991-2020 NOAA climate normals is about 6 inches in Norfolk, about 9 inches in Richmond, and about 12 inches in Lynchburg. Communities in the Roanoke Valley and the mountains see more.
Snow also tends to leave quickly. Panels are smooth, dark, and tilted, so once the sun returns, snow usually slides off before it melts from the shingles around it. The Department of Energy notes that melting snow can rinse dust from the glass as it goes.
Should you clear snow or leaves off your solar panels?
Our recommendation is to leave snow alone. The production you would recover in a day or two is small, and a winter roof is not a safe place to work. Scraping can also scratch the glass.
The exception is debris that stays put. If leaves or branches are still sitting on the array after a few rainy days, or your monitoring shows one section lagging, schedule a solar maintenance and repair visit instead of climbing up. For a seasonal checklist, see how to prepare your solar panels for fall and winter.
How Does Virginia Net Metering Make Up for Lower Winter Production?
Virginia net metering makes up for lower winter production by crediting the extra electricity your system sends to the grid in sunnier months and applying those credits when your home uses more than it produces.
Net metering is a utility billing arrangement that credits eligible solar customers for electricity their systems send to the grid. For customers of Virginia’s largest utility, the State Corporation Commission’s April 30, 2026 final order kept the 12-month netting period and one-for-one kilowatt-hour crediting in place, and added a $1 monthly administrative fee for new net metering customers.
In practice, a year often looks like this:
- Spring and early summer: mild weather and long days. Many homes produce more than they use and build credits.
- Late summer: production is high, and so is air-conditioning use.
- Fall: production eases down while electricity use is often low.
- Winter: production is at its lowest. Homes with electric heat draw on credits and buy more from the grid.
Terms are not identical across the state. Appalachian Power customers fall under a separate Commission decision, and electric cooperatives set their own net metering terms. Confirm the rules with your electricity provider before making a decision.
For credit rules, true-up timing, and how terms differ by provider, read Virginia net metering explained for homeowners.
Will Solar Panels Still Lower Your Virginia Electric Bill in December and January?
Yes. Solar panels still lower a Virginia electric bill in December and January, because every kilowatt-hour your system produces is one you do not buy from the grid. The reduction is smaller than in summer.
Consider an illustration: a Chesapeake household with the modeled 8 kW system above. At an assumed rate of $0.16 per kWh, the 560 kWh produced in December is worth about $90 in electricity. The 1,200 kWh produced in July is worth about $192. Over the full year, 11,000 kWh at that rate comes to about $1,760.
If your home heats with a heat pump or electric furnace, winter may also be when you use the most electricity. That combination, low production and high use, is why December and January bills are usually the highest of the year for solar households. It is expected, and it is the reason a system is evaluated over 12 months instead of one.
Actual solar production and savings vary based on property conditions, electricity use, utility rates, system design, financing, weather, and other project-specific factors.
For a full-year view, see how much you can save with solar panels in Virginia.
How Can You Tell If Low Winter Solar Production Is Normal?
Low winter solar production is normal when it follows the seasonal pattern: a drop of roughly 40-55% from summer, with near-zero days during snow cover. It deserves a closer look when one part of the system behaves differently from the rest, or when this winter looks very different from the last.
| Usually normal | Worth a service call |
| December output around half of July | One panel reading zero while its neighbors produce |
| Near-zero production while panels are snow-covered | Output well below the same month last year in similar weather |
| Lower output on overcast days | An error or offline alert in your monitoring app |
| A slow climb from January into March | New shade from tree growth or a nearby structure |
The most useful habit is to compare each month to the same month a year earlier. Comparing December to July will always look alarming. Comparing December to last December tells you whether anything has changed.
Systems with panel-level monitoring make this easier, since you can see each panel’s output on its own.
What Affects Fall and Winter Solar Output at Your Virginia Home?
Fall and winter solar output at a Virginia home depends mainly on roof direction, roof pitch, shade, and where in the state the home sits. Two homes with the same equipment can see different December numbers.
- Roof direction: south-facing roofs collect the most winter sun. East- and west-facing roofs produce more in the morning or afternoon and less across the short winter day.
- Roof pitch: a steeper roof faces the low winter sun more directly and sheds snow faster.
- Shade: trees and structures matter more in winter because shadows are longer.
- Location: Hampton Roads sees less snow than Lynchburg, Roanoke, or the Shenandoah Valley.
- System size: residential solar is sized primarily around your home’s electricity use and what your roof can produce across the full year.
For homeowners who are still deciding, solar panels in winter Virginia conditions are a design input. A good proposal shows estimated production for every month, so the December number is visible before you sign. Our residential solar installation guide for Virginia homeowners walks through the full process.
Learn more about residential solar installation with Convert Solar.
Do You Need a Battery for Winter in Virginia?
You do not need a battery to manage lower winter production in Virginia. A battery stores electricity your panels have already made. It does not increase how much they make.
A battery matters in winter for outages. Most grid-tied residential solar systems shut down during a grid outage unless they are configured with compatible equipment that can provide backup power. If ice storms or nor’easters are a concern where you live, backup is the reason to consider storage.
Convert Solar’s home battery storage options include the Tesla Powerwall 3, Enphase IQ Battery 5P, and Enphase IQ Battery 10C. One battery is generally sufficient for critical-load backup, such as a refrigerator, lights, and internet. Whole-home backup typically requires at least two batteries, depending on your electricity use, the loads you want covered, and how the system is configured.
Battery storage systems typically start around $18,000, with final pricing depending on equipment selection, system design, installation complexity, and homeowner energy needs.
To weigh the costs and benefits, read whether solar battery storage is worth it for Virginia homeowners.
Frequently Asked Questions
Do solar panels work on cloudy winter days in Virginia?
Yes. Solar panels produce electricity on cloudy winter days in Virginia because they respond to diffuse daylight as well as direct sun. Output is lower than on a clear day and varies with how thick the cloud cover is. A stretch of overcast weather will show as a dip in your monitoring app, then recover when skies clear.
Is winter a good time to install solar panels in Virginia?
Yes. Solar is installed year-round in Virginia, and the on-site work typically takes approximately 1-3 days. A system installed in fall or winter is in place for the longer days of spring and summer, when production is highest and net metering credits build fastest. Here is what to expect from a solar installation on your home.
Can snow or ice damage solar panels?
Snow and ice rarely damage solar panels. Panels are built with tempered glass and tested to carry snow loads, and Virginia’s typical snowfall is light compared with northern states. The greater risk comes from trying to remove snow or ice by hand, which can scratch the glass or lead to a fall.
Do solar panels need cleaning after fall leaves come down?
Usually not. Rain and wind clear most leaves and dust from tilted panels. If debris is still sitting on the array after several rainy days, or one area of the system is producing noticeably less than the rest, arrange a service visit instead of going onto the roof yourself.
Does roof direction matter more for solar panels in winter Virginia weather?
Yes. Roof direction matters more in winter because the sun stays low in the southern sky. South-facing roofs hold their winter production best. East- and west-facing roofs still work well across the year, but they see a larger seasonal drop in December and January.
See Month-by-Month Solar Production for Your Virginia Roof
Seasonal averages are a starting point. Your roof’s direction, pitch, and shade decide what solar panels in winter Virginia weather will produce at your address.
Convert Solar is a residential solar installer that has installed 8,500 systems across Virginia and Maryland. Bring your electric bill and questions to a Convert Solar consultation. We can review what your home can support, show estimated production for each month of the year, and explain what solar could potentially save based on your electricity use.
Call 757-44-SOLAR or request a no-obligation quote to see the numbers for your home.
