Alabama Solar Calculator

Enter your utility and monthly bill — get system size, self-consumption savings, federal ITC, and 25-year projections. Alabama has no net metering mandate — this calculator models actual self-consumption economics honestly.

Your Alabama solar inputs

Monthly electric bill?

Electric utility?

System size?

High summer AC load?

Alabama solar estimate

20 × 400W panels (8 kW system)

Recommended size for your bill: 11.0 kW

Monthly usage1,231 kWh/mo

Annual production (AL 4.7 PSH)10,979 kWh/yr

Self-consumed (80%)8,783 kWh/yr @ $0.13/kWh

Exported (no net metering)2,196 kWh/yr @ ~$0.035/kWh

Annual savings (self-consumption)$1,219/yr

Gross system cost$22,000

Federal ITC (30%)-$6,600

State incentivesNone

Net cost after ITC$15,400

Payback period12.6 yrs

25-year savings$30,467

Alabama has no mandatory net metering. Exported solar earns only ~$0.035/kWh (avoided cost) — much less than your retail rate. Maximize self-consumption by running A/C, appliances, and EV charging during peak solar hours (10am-3pm).

For reference: with net metering at retail, payback would be 10.8 yrs and annual savings $1,427/yr. Alabama's lack of net metering adds ~1.8 years to payback.

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How to Use This Calculator

Alabama has no net metering mandate — self-consumption is everything

This is the most important fact about Alabama solar: Alabama Power and most Alabama utilities are not required by state law to offer net metering. Exported solar may earn only the "avoided cost" rate — approximately $0.03-0.04/kWh — instead of your retail rate of $0.10-0.13/kWh. This significantly extends payback periods compared to net metering states. Alabama solar works best when you maximize self-consumption: using electricity you generate directly, during daylight hours, instead of selling it back at low rates.

High summer A/C loads are Alabama's silver lining

Alabama's intense summer heat means A/C systems run heavily during the same daytime hours when solar produces peak power. A home with central A/C running from 9am-5pm can achieve 75-85% solar self-consumption — among the highest in the US. This natural alignment between solar production and cooling demand is Alabama's compensating advantage for the absence of net metering. Enable the "High summer AC load" toggle if your home runs A/C heavily from spring through fall.

Good sun compensates for policy gap

Alabama receives 4.7 peak sun hours (PSH) — the same as Idaho and California's Central Valley. This is strong solar irradiance that produces meaningful energy. Combined with Alabama Power's $0.13/kWh rate (higher than average), self-consumed solar saves real money. The challenge is simply that exported solar earns very little. The strategy: size your system to match your daytime consumption, not your total consumption.

The Formula

Monthly kWh = Monthly Bill ÷ Electricity Rate Annual Production = System kW × 1000 × 4.7 PSH × 365 × 0.80 efficiency ÷ 1000 Self-consumed kWh = Annual Production × Self-consumption Ratio (High A/C load: 80% | Moderate: 55%) Exported kWh = Annual Production − Self-consumed kWh Annual Savings = (Self-consumed × Retail Rate) + (Exported × $0.035 avoided cost) Gross Cost = System kW × 1000 × $2.75/W ITC Credit = Gross Cost × 30% Net Cost = Gross Cost − ITC Credit Payback = Net Cost ÷ Annual Savings

The critical difference from net metering states: exported kWh earn only ~$0.035/kWh, not your retail rate. Alabama Power's retail rate of $0.13/kWh means exported solar is worth less than 27 cents on the dollar compared to self-consumed solar. This is why system sizing for self-consumption — not total production — is the key to Alabama solar ROI.

Example

Tom — Birmingham Alabama Power customer

Tom pays $160/month to Alabama Power at $0.13/kWh. His home runs A/C heavily in summer. He wants an 8 kW system.

Monthly bill$160 (Alabama Power, $0.13/kWh)

System8 kW, south-facing, high A/C use

LocationBirmingham, AL (4.7 PSH)

Result

Annual production~10,987 kWh/yr

Self-consumed (80%)~8,790 kWh @ $0.13/kWh = $1,143/yr

Exported (no net metering)~2,197 kWh @ $0.035/kWh = $77/yr

Total annual savings~$1,220/yr

Gross system cost~$22,000

Federal ITC (30%)-$6,600

Net cost after ITC~$15,400

Payback period~12.6 years

25-year savings~$30,500

With 80% self-consumption, Tom's high A/C load turns Alabama's policy weakness into a strength. Compare: if Alabama had net metering, payback would be ~10.5 years and annual savings ~$1,428/yr. The difference is real but not prohibitive — especially given Alabama Power's above-average rate of $0.13/kWh and 4.7 PSH solar resource.

FAQ

Why doesn't Alabama have net metering? ▼

Alabama does not have a state law mandating net metering for investor-owned utilities like Alabama Power. Alabama Power is a regulated monopoly under the Alabama Public Service Commission. Alabama Power has historically offered a "Renewable Generation" tariff that pays the avoided cost rate for exported solar — approximately $0.035/kWh, much lower than the $0.13/kWh retail rate customers pay. This is one of the least favorable solar export policies in the Southeast. The Alabama Solar Industry Association has been advocating for better net metering policy. Check with your specific utility for current export compensation terms, as policies can change.

How do I maximize self-consumption in Alabama? ▼

Since exported solar earns very little in Alabama, maximizing self-consumption is critical. Strategies: (1) Run A/C during peak solar hours (10am-3pm) — set your thermostat to cool down before peak heat; (2) Use a smart thermostat to pre-cool during solar production hours; (3) Run dishwasher, laundry, EV charging during the day; (4) Size your system conservatively — a system sized to your daytime load performs better than one sized to total daily consumption; (5) Add battery storage — batteries capture midday excess solar and discharge in evening, dramatically improving effective self-consumption; (6) Consider a time-of-use rate plan that values daytime power more highly if Alabama Power offers one.

Is solar worth it in Alabama without net metering? ▼

Solar can still be worth it in Alabama, but it requires realistic expectations. Homes with high daytime electricity consumption (A/C-heavy households, work-from-home, pool pumps, EV charging) achieve high self-consumption rates and better economics. The 30% federal ITC significantly reduces upfront cost. Alabama Power's $0.13/kWh rate is above average, making each self-consumed kWh more valuable. Payback periods of 12-16 years are typical — longer than net metering states, but 25-year lifetime savings still substantially exceed net cost. Battery storage paired with solar can improve economics by capturing and shifting production to evening consumption hours.

Does Alabama have any state solar incentives? ▼

Alabama has no state income tax credit for solar, no state property tax exemption for solar, and no statewide net metering mandate. The only major incentive is the 30% federal Investment Tax Credit (ITC), which applies to all Alabama residents. Some Alabama municipalities may have local programs — check with your city. Tennessee Valley Authority (TVA) co-op customers in northern Alabama may have different programs under TVA's Green Power Providers program. The federal ITC alone significantly improves Alabama solar economics despite the policy gap.

Should I add battery storage in Alabama? ▼

Battery storage makes more sense in Alabama than in most US states, precisely because there's no net metering. Without net metering, midday excess solar (when production exceeds consumption) earns only ~$0.035/kWh. A battery captures this "wasted" generation and makes it worth $0.13/kWh when discharged in the evening — increasing effective self-consumption from ~55-80% to 85-95%. The 30% federal ITC applies to batteries too (when paired with solar), reducing battery cost by 30%. Battery economics in Alabama: compare the $0.035/kWh you'd earn exporting versus the $0.13/kWh you'd save self-consuming — the battery's value in Alabama is higher than almost any other state.

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