Solar Panel Payback Calculator for Maryland
Maryland (MD) offers good solar potential with an average of 4.2 peak sun hours per day. The average residential electricity rate is 16 cents per kWh, and solar installation costs average $3.05 per watt. Based on these figures, a typical 6 kW residential solar system in Maryland has an estimated payback period of 10.9 years and generates $27,325 in total savings over 25 years.
Solar System Size Comparison for Maryland
The table below compares four common residential solar system sizes for Maryland homeowners. All calculations use the state average electricity rate of 16 cents per kWh, average installation cost of $3.05/W, and 4.2 peak sun hours. The federal 30% Investment Tax Credit is included in all scenarios.
| System Size | Gross Cost | Federal Credit | Net Cost | Annual Output | Annual Savings | Payback | 20-Year Savings | 25-Year Savings |
|---|---|---|---|---|---|---|---|---|
| 4 kW | $12,200 | $3,660 | $8,540 | 4,906 kWh | $785 | 10.9 years | $11,481 | $18,220 |
| 6 kW | $18,300 | $5,490 | $12,810 | 7,358 kWh | $1,177 | 10.9 years | $17,218 | $27,325 |
| 8 kW | $24,400 | $7,320 | $17,080 | 9,811 kWh | $1,570 | 10.9 years | $22,959 | $36,435 |
| 10 kW | $30,500 | $9,150 | $21,350 | 12,264 kWh | $1,962 | 10.9 years | $28,699 | $45,546 |
Solar Energy in Maryland: What You Need to Know
Maryland has a robust SREC market and strong solar incentive programs. The Renewable Portfolio Standard drives demand for solar renewable energy credits, providing additional income for solar owners.
Electricity Rates in Maryland
The average residential electricity rate in Maryland is 16 cents per kWh, which is near the national average of approximately 16 cents per kWh. These moderate rates provide a reasonable foundation for solar savings. Combined with the federal tax credit and any state incentives, solar remains a strong investment for most Maryland homeowners.
Peak Sun Hours and Solar Production
Maryland averages 4.2 peak sun hours per day, which is moderate but still viable for residential solar. Many successful solar installations operate across the Northeast and Midwest with similar sun hours. Modern panels are increasingly efficient even in diffuse light conditions. A 6 kW system in Maryland produces approximately 7,358 kWh per year, accounting for standard system efficiency losses and typical weather patterns.
Maryland Solar Incentives and Programs
No state tax credit but SRECs are valuable — typically $60-80 per MWh. Net metering at full retail rate. Property tax exemption for solar. Sales tax exemption. Grant program through MEA for low-to-moderate income.
Incentive Summary for Maryland
- Federal Tax Credit: 30% ITC (available through 2032)
- State Tax Credit: None
- Net Metering: Available
- SRECs: Available — provides additional ongoing revenue
- Avg. Installation Cost: $3.05/watt (before incentives)
How Maryland Compares to Similar States
Below is a comparison of Maryland with five states that have similar solar conditions. All calculations are based on a 6 kW residential system using each state's average electricity rate and sun hours.
| State | Sun Hours | Rate (c/kWh) | Cost/Watt | Net Cost | Payback | 25-Yr Savings |
|---|---|---|---|---|---|---|
| Maryland | 4.2 | 16c | $3.05 | $12,810 | 10.9 years | $27,325 |
| Delaware | 4.2 | 14.5c | $2.95 | $12,390 | 11.6 years | $23,983 |
| District of Columbia | 4.2 | 14.5c | $3.30 | $13,860 | 13.0 years | $22,513 |
| Iowa | 4.2 | 14.5c | $3.00 | $12,600 | 11.8 years | $23,773 |
| North Dakota | 4.2 | 11.5c | $3.10 | $13,020 | 15.4 years | $15,827 |
| Virginia | 4.3 | 13c | $2.95 | $12,390 | 12.7 years | $21,000 |
Environmental Impact of Solar in Maryland
Installing a 6 kW solar system in Maryland offsets approximately 6,291 pounds of CO2 per year, which is equivalent to planting 51.9 trees annually. Over the 25-year lifespan of your solar system, that adds up to roughly 157,275 pounds of avoided carbon emissions. Choosing solar energy is one of the most impactful steps a homeowner can take to reduce their carbon footprint and contribute to cleaner air in Maryland communities.
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