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TOU Rate Structure

Solar ROI for Baltimore Gas & Electric (BGE) Customers

Baltimore Gas & Electric (BGE) charges an average of $15.8¢/kWh. Peak rates reach $21.5¢/kWh with off-peak at $10.8¢/kWh, creating strong battery arbitrage value. A 7 kW solar system produces a $8,768 NPV over 25 years.

$13,965
Net System Cost
$8,768
25-Year NPV
10 years
Payback Period
$0.161/kWh
Solar LCOE

Baltimore Gas & Electric (BGE) Rate Structure

ParameterRate
Average residential rate$15.8¢/kWh
Peak rate$21.5¢/kWh
Off-peak rate$10.8¢/kWh
Peak/off-peak spread$10.7¢/kWh
Rate structureTOU
Export credit policy1:1 net metering at retail rate

Solar System Economics

A 7 kW solar system for a Baltimore Gas & Electric (BGE) customer costs $19,950 before incentives. The 30% federal ITC saves $5,985. The net out-of-pocket cost is $13,965.

At Baltimore Gas & Electric (BGE)'s $15.8¢/kWh average rate, the system saves $1,416 in year one, producing 8,960 kWh. The solar LCOE of $0.161/kWh is -2% below Baltimore Gas & Electric (BGE)'s current rate.

Battery Storage for Baltimore Gas & Electric (BGE) Customers

$8,400
Battery Net Cost
$1
Daily Arbitrage
$356
Annual Arbitrage
-$6,124
25-Year Battery NPV

Baltimore Gas & Electric (BGE)'s TOU spread generates $356/year in arbitrage value. The 25-year battery NPV of -$6,124 suggests batteries are marginal on economics alone. Backup power value and grid services programs may improve the case.

FAQ: Solar for Baltimore Gas & Electric (BGE) Customers

How much can Baltimore Gas & Electric (BGE) customers save with solar?
A typical 7 kW solar system saves Baltimore Gas & Electric (BGE) customers approximately $1,416/year in electricity costs. Over 25 years, the NPV of savings after system costs is $8,768.
What is Baltimore Gas & Electric (BGE)'s rate structure?
Baltimore Gas & Electric (BGE) uses a time-of-use (TOU) rate structure with peak rates of $21.5¢/kWh and off-peak rates of $10.8¢/kWh. The $10.7¢/kWh peak/off-peak spread creates significant value for battery storage — TOU arbitrage alone is worth $356/year.
Does Baltimore Gas & Electric (BGE) offer net metering?
1:1 net metering at retail rate
Should Baltimore Gas & Electric (BGE) customers add battery storage?
Battery storage for Baltimore Gas & Electric (BGE) customers has a 25-year NPV of -$6,124. The economics are marginal based on TOU savings alone, but backup power value and future grid services programs may change the equation.

Other Utilities in Maryland

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