Solar System Sizing Tool — Columbia, MD
Use our interactive tool to determine the right solar system size for your home in Columbia. Adjust your monthly electricity bill and home size to see a personalized recommendation based on local solar conditions.
Size Your Solar System
$
Local rate: 17¢/kWh
ft
Peak sun hours: 4.5h/day
7.3
System Size (kW)
19
Panels Needed
342
Roof Space (sq ft)
$20,822
Est. Cost
12,000
Annual kWh
100%
Energy Offset
Energy Offset100% of your usage covered by solar
0%50%100%
How We Calculate Your System Size
Your recommended solar system size is based on several factors specific to Columbia, MD:
- Electricity usage: Your monthly bill is converted to annual kWh consumption using the local rate of 17¢/kWh.
- Solar irradiance: Columbia receives an average of 4.5 peak sun hours per day, which determines how much energy each panel produces.
- Panel specifications: We use 400W panels, each requiring approximately 18 sq ft of roof space, which is standard for modern residential installations.
- Roof space: The total roof area needed depends on the number of panels. The average home in Columbia is 2,000 sq ft.
Solar at a Glance: Columbia, MD
17¢
Avg Rate / kWh
4.5h
Peak Sun Hours / Day
7.3 kW
Avg Recommended Size
19
Avg Panels Needed
$20,822
Est. Cost (before incentives)
Baltimore Gas & Electric (BGE)
Utility Provider
Other Cities in Maryland
Related Resources
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