Alaska Solar Calculator

Alaska's high electricity rates ($0.23/kWh) make solar financially compelling despite extreme seasonal variation — enter your utility bill to see summer surplus, winter shortfall, and your 30% ITC savings.

Your Alaska solar inputs

Monthly electric bill?

Utility?

System size?

Battery backup?

Alaska solar estimate

15 × 400W panels (6 kW system)

Recommended size for your annual bill: 10.4 kW

Monthly usage783 kWh/mo

Annual production (AK avg 3.0 PSH + cold bonus)5,519 kWh/yr

Summer production est. (6+ PSH)907 kWh/mo

Winter production est. (0.5 PSH)76 kWh/mo

Annual savings$1,184/yr

Gross system cost$19,200

Federal ITC (30%)-$5,760

Alaska state creditNone (no state income tax)

Net cost after ITC$13,440

Payback period11.4 yrs

25-year savings$29,591

Alaska solar has extreme seasonal variation: 6+ PSH in summer vs 0.5 PSH in winter. The 5% cold-climate efficiency bonus partially offsets lower average sun hours. Net metering availability varies by utility — confirm with Chugach, MEA, or GVEA before installing. Alaska's high $0.23/kWh rate is the primary driver of solar economics.

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How to Use This Calculator

Alaska solar is unique — extreme seasonal variation changes everything

Alaska is unlike any other US state for solar. The annual average of 3.0 peak sun hours (PSH) hides an extreme swing: summer produces 6+ PSH for months on end during Alaska's famous midnight sun, while winter drops to 0.5 PSH with only a few hours of daylight. Fairbanks sees nearly 24-hour darkness in mid-December. Any Alaska solar analysis must account for this seasonality — summer surplus is dramatic, and winter shortfall is equally dramatic. Most Alaska grid-tied solar owners carry over summer credits to offset winter bills.

Enter your bill and select your Alaska utility

Chugach Electric Association serves Anchorage, Eagle River, and parts of the Kenai Peninsula. MEA (Matanuska Electric Association) serves the Mat-Su Valley north of Anchorage. GVEA (Golden Valley Electric Association) serves Fairbanks and Interior Alaska. Alaska's average electricity rate of $0.23/kWh is among the highest in the nation, which significantly improves solar's financial case. Select your utility, enter your system size, and the calculator shows production, savings, and payback in seconds.

Cold-climate efficiency bonus: panels work better in the cold

Solar panels are tested and rated at 25°C (77°F). In Alaska's cold temperatures, panels can operate 5-10% more efficiently than their rated output — the cold reduces electrical resistance. This calculator applies a 5% cold-efficiency bonus to production estimates. On a 6 kW system, this bonus adds approximately 500 kWh per year of additional production, partially offsetting Alaska's lower average sun hours.

The Formula

Monthly kWh = Monthly Bill ÷ Electricity Rate Annual Production = System kW × 1000 × 3.0 PSH × 365 × 0.84 efficiency (incl. cold bonus) ÷ 1000 Summer Monthly = System kW × 1000 × 6.0 PSH × 30 × 0.84 ÷ 1000 Winter Monthly = System kW × 1000 × 0.5 PSH × 30 × 0.84 ÷ 1000 Self-consumed kWh = Annual Production × 0.55 Exported kWh = Annual Production − Self-consumed kWh Annual Savings = Self-consumed × Rate + Exported × Rate × 0.85 Gross Cost = System kW × 1000 × $3.20/W + Battery ($12,000 if added) ITC Credit = Gross Cost × 30% Net Cost = Gross Cost − ITC Payback = Net Cost ÷ Annual Savings

Alaska averages 3.0 PSH annually with dramatic seasonal swings. Anchorage averages 3.5 PSH annually with summer peaks above 6 PSH. Fairbanks also reaches 6+ PSH in summer but has harsher winter darkness. Juneau (Southeast Alaska) averages only 2.5 PSH due to persistent cloud cover and rain. Alaska's $3.20/W installation cost is higher than the US average due to logistics, labor costs, and smaller market scale. The 5% cold-efficiency bonus (0.80 × 1.05 = 0.84) is applied to system efficiency.

Example

Mark — Anchorage Chugach Electric customer

Mark is in Anchorage on Chugach Electric paying $180/month at $0.23/kWh. He installs a 6 kW system to capture summer surplus and reduce his high winter bills through net metering carryover.

Monthly bill$180 (Chugach Electric, $0.23/kWh)

System6 kW, no battery

LocationAnchorage, AK (3.5 PSH avg)

Result

Annual production (3.0 PSH avg + cold bonus)~5,540 kWh/yr

Summer production est.~907 kWh/mo (June-Aug)

Winter production est.~76 kWh/mo (Dec-Jan)

Annual savings~$1,243/yr

Gross system cost~$19,200

Federal ITC (30%)-$5,760

Alaska state creditNone (no state income tax)

Net cost after ITC~$13,440

Payback period~10.8 years

25-year savings~$31,075

Mark's high Chugach rate makes solar financially viable despite Alaska's challenging conditions. His summer surplus (June-August producing 3x his monthly usage) carries forward as credits to offset winter darkness. While Alaska has no state tax credit, the 30% federal ITC still reduces his net cost significantly. The payback period is longer than Sun Belt states but the 25-year savings are substantial given Alaska's high electricity rates.

FAQ

Does solar work in Alaska given the extreme seasonal variation? ▼

Yes, but with important caveats. Alaska averages 3.0 PSH annually but this hides extreme variation: summer in Anchorage sees 6+ PSH for months, while winter drops to 0.5 PSH with very short days. Most Alaska solar owners expect summer surplus and winter shortfall. Grid-tied systems with net metering can bank summer credits to offset winter bills — effectively using the grid as a battery across seasons. Systems sized for summer production are best paired with battery storage or a generator for winter backup power. Off-grid summer cabins in Alaska can be excellent solar applications.

What is the cold-climate efficiency bonus for Alaska solar? ▼

Solar panels are more efficient in cold temperatures — panels are rated at 25°C and produce up to 5-10% more power in cold Alaska conditions. This is because lower temperatures reduce electrical resistance in the panel's semiconductor material, allowing more current to flow. This calculator applies a conservative 5% cold bonus. Snow loading is a concern — panels mounted at a steep angle (60°+) in Alaska shed snow more effectively and also capture low-angle winter sun better. Combined with Alaska's high electricity rates ($0.23/kWh average), the economics can work for the right property.

Does Alaska have net metering? ▼

Net metering in Alaska varies significantly by utility. Chugach Electric Association offers a net metering program for systems up to 25 kW. MEA (Matanuska Electric Association) has an interconnection program. GVEA (Golden Valley Electric Association) in Fairbanks has different policies that are less favorable for solar exports. Remote Alaska areas not served by the Railbelt grid (the main Anchorage-to-Fairbanks transmission system) often rely on diesel generation — off-grid solar with battery is often more practical than grid-tied for these communities. Always contact your specific utility before installing.

What federal incentives apply to Alaska solar? ▼

Alaska residents qualify for the 30% federal Investment Tax Credit (ITC) on solar panel systems and battery storage added simultaneously. Alaska has no state income tax, so there is no state solar tax credit. The federal ITC is the primary incentive. It applies whether you are grid-tied or off-grid — off-grid systems are explicitly covered by the ITC when used as a primary power source. Rural Energy for America Program (REAP) grants from the USDA may also apply to Alaska rural properties and agricultural operations.

What are the best locations for solar in Alaska? ▼

Anchorage and the Mat-Su Valley are the best locations for solar in Alaska due to the combination of reasonable sun hours, mild winters, and access to net metering utilities. The Palmer/Wasilla area north of Anchorage often has clearer skies than Anchorage itself. Fairbanks has excellent summer solar potential (long days at 65°N latitude) but extreme winter darkness. Juneau and Southeast Alaska have significant cloud cover and rainfall year-round, making solar less productive. Summer cabins anywhere in Alaska — especially off-grid — can be excellent solar applications, capitalizing on months of nearly continuous daylight.

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