GO SOLAR

Your Personalized Power Portal

Rockville, MD , 20847

Search for another address

Average Bill

$195

Energy Usage

945 kWh

CO₂ Emissions

602 lbs

Rooftop Solar

Harness the power of rooftop solar and reap the benefits of renewable energy. Lower your electricity bills, reduce reliance on fossil fuels and energy companies, and take advantage of cost-effective investments with federal and state incentives. Switching to rooftop solar is a sustainable solution that pays off in the long run.

The cost of solar in Rockville

Average solar panel installation

$23,959

Average monthly bill without solar

$195

Average monthly bill with solar

$0

Solar will pay for itself in

11 years
sunny

Got questions about solar?

Powered by WattBuy’s data & insights on energy usage, costs, incentives and more. Ask Sunny all your questions about solar panels, whenever you have them.

Ask Sunny anything (about solar)

Do you own your home?

Yes

No, I rent

Other WattBuy Recommendations for Your Home

Toggle each recommendation on and off to see its impact on your bill, energy usage, and carbon emissions.

EV Chargers

Demand Response

Estimated Savings

$19

CO₂ Emissions Reduced

60 lbs

Smart Thermostats

Estimated Savings

$21

CO₂ Emissions Reduced

5 lbs

LED Lightbulbs

Estimated Savings

$8

CO₂ Emissions Reduced

2 lbs

Smart Plugs

Estimated Savings

$6

CO₂ Emissions Reduced

1 lbs

Heat Pumps

Water Heaters

Understand Your Solar Numbers

Solar costs

The estimated cost to install solar at your house is $23,959. We calculated this because we think your electricity usage for the year is about 11340 kWh, and a 7.96 kW size solar system on your roof would replace 100% of your usage. We are using an estimated cost of $3.01/W, which we get from Energy Sage.

Current electricity costs

The current electricity costs for PEPCO are 21¢/kWh. So, by replacing 100% of your usage, you’ll save $2,337 throughout the year. If the costs of electricity stay the same, then your savings will pay for your solar system in 10.25 years. If the costs of PEPCO electricity rise 3%, then your savings will pay for your solar system in 9.95 years.

Solar production throughout the year

Solar installed at your house would generate different amounts of electricity during different months. We estimate that your production would vary from a high of 1060 kWh in August, to a low of 720 kWh in December. For the entire year, we estimate that your 7.96 kW sized system would produce 11340 kWh.

Net metering and Incentives

The state of Maryland generally uses Full Retail Rate for net metering. This means that when you produce more electricity than your house uses, the utility will pay you Full Retail Rate for the extra electricity.

Solar in your area

From Department of Energy Data, it looks like 6,071 homes have installed solar panels in your state, Maryland.

Installers

There are 11 solar installers that operate in Maryland. WattBuy recommends RGR Marketing and EnergySage.

Available Incentives

Upfront Rebates

Battery

Who

Program

Value

Max

Likely

Maryland

Energy Storage Tax Credit (SB 758)

30% of cost

—

—

Maryland

Energy Storage Tax Credit (SB 758)

Value

30% of cost

Max

—

Likely

—

Maryland

Maryland State Tax Credit

30% of cost

$5,000

—

Maryland

Maryland State Tax Credit

Value

30% of cost

Max

$5,000

Likely

—

Heat Pump

Who

Program

Value

Max

Likely

DCSEU

DC Electrification Rebates - Heat Pumps

$5,000

—

—

DCSEU

DC Electrification Rebates - Heat Pumps

Value

$5,000

Max

—

Likely

—

DCSEU

Ducted Air Source Heat Pump Rebate

$1,000–$5,000

$5,000

—

DCSEU

Ducted Air Source Heat Pump Rebate

Value

$1,000–$5,000

Max

$5,000

Likely

—

DCSEU

Ductless Mini-Split Heat Pump Rebate

$1,000–$5,000

$5,000

—

DCSEU

Ductless Mini-Split Heat Pump Rebate

Value

$1,000–$5,000

Max

$5,000

Likely

—

Maryland

FY25 Residential Clean Energy Rebate Program - New Geothermal Heating and Cooling

$3,000

—

—

Maryland

FY25 Residential Clean Energy Rebate Program - New Geothermal Heating and Cooling

Value

$3,000

Max

—

Likely

—

Solar

Who

Program

Value

Max

Likely

Maryland

FY25 Residential Clean Energy Rebate Program - Solar PV (Panels)

$1,000

—

—

Maryland

FY25 Residential Clean Energy Rebate Program - Solar PV (Panels)

Value

$1,000

Max

—

Likely

—

Maryland

Maryland Solar Access Program - Solar PV

$750/kW

$7,500

—

Maryland

Maryland Solar Access Program - Solar PV

Value

$750/kW

Max

$7,500

Likely

—

Maryland

Solar Energy Property Tax Credit

50% of cost

$2,500

—

Maryland

Solar Energy Property Tax Credit

Value

50% of cost

Max

$2,500

Likely

—

Ongoing Programs

Smart Thermostat

Who

Program

Value

ecobee

Community Energy Savings

$50/year typical

ecobee

Community Energy Savings

Value

$50/year typical

Google Nest

Rush Hour Rewards

$40/year typical

Google Nest

Rush Hour Rewards

Value

$40/year typical

Pepco - DC

Pepco - Maryland DR Program

20 % savings

Pepco - DC

Pepco - Maryland DR Program

Value

20 % savings

Solar

Who

Program

Value

Maryland

Maryland SREC Program

$40.5/MWh (2026 market)

Maryland

Maryland SREC Program

Value

$40.5/MWh (2026 market)

How We Crunch the Numbers

1
We estimate every home's electricity usage based on data from a number of public and private data sources, including your electricity distributor and the Department of Energy.
2
We overlay key information about where you live, including weather and climate data about your region, and housing data like when your home was built and how big it is.
3
To figure out your home's carbon footprint, we look at how electricity is generated in your state, like whether your electricity is coming more from coal (very carbon-intensive) or wind (carbon-free).

Using this data-driven approach, we have created a machine learning model that can estimate electricity usage and carbon footprint for every home in the US. We then use this information to recommend the best options for you, so you can feel good that WattBuy is recommending something truly personalized.

Our electricity estimations are trusted by our partners at The Department of Energy's National Renewable Energy Laboratory, as well as many of the biggest consumer brands in the world.