Alaska's solar story is defined by extreme seasonal swings — 7.6 peak sun hours in June, roughly 0.1 in December — and an avoided-cost net metering buyback far below retail. Know the real numbers before estimating your ROI.
Anchorage averages roughly 3.3 peak sun hours/day annually — but that number is almost meaningless without seasonal context. In June (near the solstice with 19+ hours of daylight): ~7.6 peak sun hours/day. In December (only ~5.5 hours of daylight): roughly 0.1 peak sun hours/day.
A solar system in Alaska produces the vast majority of its annual output in spring, summer, and early fall — and almost nothing in winter. This seasonal imbalance, combined with Alaska's avoided-cost export buyback rate (~5.7¢/kWh in Chugach territory vs. ~23.6¢/kWh retail), means month-by-month production estimates matter far more than an annual average. Any credible Alaska solar proposal must show you the seasonal production profile.
Alaska HB 164 / SB 150, backed by Governor Dunleavy and advanced by the House Energy Committee in early 2026, would require Railbelt utilities to credit net metering at the full retail rate — a major improvement over the current avoided-cost structure. Unused annual credits would expire each March 31; utilities could seek approval for a modest fee to limit cost-shifting to 2%/year. This bill has NOT yet been signed into law. Current avoided-cost buyback terms still apply. Check the bill's status at akleg.gov before finalizing any payback estimate — passage would significantly improve the economics for grid-tied Railbelt solar customers.
Find out how much you can save based on your location and current energy usage.
Alaska's solar economics don't fit a national template. Before using any estimate, understand the specific factors that make Alaska fundamentally different from every other state.
The annual average of 3.3 hours tells you almost nothing useful about Alaska solar. The real story is that your system produces most of its annual output in the spring/summer/early fall window — and essentially nothing in the December–January period when heating demands are highest and daylight is shortest.
Any credible Alaska solar proposal must show month-by-month production estimates. An annual kWh figure without seasonal breakdown is not enough to evaluate Alaska solar economics accurately.
Under Regulatory Commission of Alaska rules, systems up to 25kW offset their own consumption at the retail rate within the same billing period. But net excess generation beyond what you consume gets purchased at the utility's avoided-cost rate — not at retail.
Chugach Electric Association (Anchorage area) pays approximately 5.7¢/kWh for surplus exports — versus a South District retail rate of roughly 23.6¢/kWh. That's about one-quarter of what you pay for power. Given Alaska's extreme summer surplus production, a large share of your summer output may earn this low export rate.
There's also an aggregate cap: utilities must accept net-metered capacity only up to ~1.5% of average load. Once reached, enrollment can be limited or closed. Confirm current net metering availability and terms directly with your utility before proceeding.
Alaska HB 164 / SB 150, backed by Governor Dunleavy and advanced by the House Energy Committee in early 2026, would require Railbelt utilities to credit net metering at the full retail rate — a significant improvement over the current avoided-cost structure.
Key proposed provisions: unused annual net metering credits would expire each March 31 (not roll forward indefinitely); utilities could seek regulatory approval for a modest fee to limit cost-shifting to non-participating ratepayers to 2%/year.
This bill has NOT yet been signed into law. Current avoided-cost buyback terms still apply. Check status at akleg.gov — passage would materially change the math for Railbelt solar customers.
Alaska has no state income tax, so there is no state tax credit mechanism for solar — there's nothing to apply a credit against. Alaska also has no statewide sales tax, so there is no state-level sales tax on solar equipment purchases.
However, many Alaska municipalities levy their own local sales taxes that vary widely: Anchorage has no local sales tax, but Juneau, Fairbanks, Kodiak, and many other communities do. Whether solar equipment is specifically exempt from local taxes depends on individual municipality rules.
Property tax treatment for renewable energy is also set at the local borough/municipality level — not guaranteed statewide. Check with your specific local assessor's office to understand what applies in your location.
The 30% federal residential solar tax credit under Section 25D of the Internal Revenue Code expired December 31, 2025. Systems installed in 2026 or later are not eligible for this credit.
This is especially important to flag for Alaska homeowners: many generic online guides about Alaska solar still incorrectly describe the 30% federal credit as currently available. Be cautious of any installer or quote that still advertises "claim 30% back from the federal government" for a 2026 installation.
Confirm with a tax professional if your installer references federal incentives. The expiration of this credit materially extends payback periods compared to pre-2026 estimates.
Many rural Alaska communities are not connected to the main Railbelt grid and instead rely on isolated diesel microgrid systems operated by local utilities or village cooperatives. In these communities, electricity costs can be extremely high — sometimes 50 cents to over $1 per kilowatt-hour — because every kilowatt-hour ultimately comes from diesel fuel that must be transported in, often by barge or small aircraft.
In off-grid or isolated-microgrid communities, solar paired with battery storage can be economically attractive despite Alaska's overall low annual average sun hours — precisely because summer production is very strong and every unit of solar-generated electricity displaces expensive diesel at the full avoided fuel cost. Alaska's Renewable Energy Fund (administered by the Alaska Energy Authority) has funded many rural solar-plus-storage projects for this reason.
However, the economics vary enormously by community, microgrid structure, and fuel costs. If you are in a rural community on an isolated diesel microgrid, the standard grid-tied Railbelt solar analysis does not apply. Contact your local utility or the Alaska Energy Authority (akenergyauthority.org) to understand what makes sense for your specific situation.
Net metering terms, buyback rates, aggregate caps, and enrollment status vary by utility in Alaska. Before finalizing any solar estimate, contact your specific provider:
Alaska's solar production is unlike any other state because of extreme seasonal daylight variation. Anchorage averages roughly 3.3 peak sun hours per day on an annual basis — but that single number hides the reality. In June, near the summer solstice with nearly 19+ hours of daylight, Anchorage receives around 7.6 peak sun hours per day — comparable to parts of Arizona. In December, with only about 5.5 hours of daylight and a sun angle barely above the horizon, production drops to roughly 0.1 peak sun hours per day — essentially negligible. This means the vast majority of your annual solar production happens in spring, summer, and early fall. Your system will produce far more electricity than you can use in summer (especially if you're away or have modest cooling loads), and almost nothing in the depths of winter when heating demands peak. When evaluating any Alaska solar proposal, ask for month-by-month production estimates, not just an annual average — the seasonal profile matters enormously for understanding how much of that production you'll actually use versus export at a low buyback rate.
Alaska has a form of net metering under Regulatory Commission of Alaska rules, but it works differently from full 1:1 retail net metering in states like Florida or Washington. Systems up to 25kW can offset their own consumption at the retail rate within the same billing period — meaning solar you use directly is valued at whatever you'd otherwise pay per kilowatt-hour. However, any net excess generation beyond what you consume in that billing period gets purchased by the utility at a much lower 'avoided cost' rate rather than at the full retail rate. Chugach Electric Association, which serves the Anchorage area, pays a non-firm buyback rate of approximately 5.7 cents per kilowatt-hour for surplus exports — compared to a South District retail rate of around 23.6 cents per kilowatt-hour. That's roughly one-quarter of retail. Given Alaska's summer surplus generation profile (you will produce far more than you can use in June and July), this low export credit rate significantly affects payback calculations. Additionally, there is a statewide aggregate cap: utilities are only required to accept net-metered solar capacity up to approximately 1.5% of their average load. Once that cap is reached, a utility could limit or close enrollment. Contact your specific utility — Chugach Electric, Homer Electric Association, Matanuska Electric Association, Golden Valley Electric Association, or your local cooperative — to confirm whether net metering enrollment is currently open and what their current buyback rate is.
Alaska House Bill 164 and its companion Senate Bill 150 represent a significant potential change to Alaska's net metering landscape. Backed by Governor Dunleavy and advanced by the Alaska House Energy Committee in early 2026, these bills would require Railbelt utilities to offer standardized net metering credited at the full retail rate — a major improvement over the current avoided-cost buyback structure. Under the proposed bills, unused annual net metering credits would expire each March 31 rather than rolling forward indefinitely, and utilities would be able to seek regulatory approval for a modest fee to limit cost-shifting to non-participating ratepayers to 2% per year. As of the time of this writing, HB 164 / SB 150 has NOT yet been signed into law. The current, lower avoided-cost buyback terms still apply. This is a rapidly evolving situation — check the current status of HB 164 with the Alaska State Legislature (akleg.gov) or your utility directly before finalizing any solar payback estimate, since passage could significantly improve the economics for Railbelt grid-tied solar customers.
No to a state income tax credit — Alaska has no state income tax, so there is no state income tax credit mechanism for solar installations. On sales tax, Alaska has no statewide sales tax, so there is no state-level sales tax on solar equipment. However, Alaska is unique among no-sales-tax states in that many municipalities and boroughs levy their own local sales taxes, and these vary widely by location. Anchorage has no local sales tax, but Juneau, Fairbanks, Kodiak, and many other communities do charge local sales taxes on purchases. Whether solar equipment is specifically exempt from these local taxes depends on individual municipality rules — check with your local government or installer to confirm what taxes apply in your specific location. Property tax treatment for renewable energy systems is also set at the local municipality or borough level in Alaska, not guaranteed statewide. Some boroughs may offer property tax exemptions or special assessments for renewable energy, others may not. Check with your specific local assessor's office rather than assuming a blanket statewide exemption applies.
No. The 30% federal residential solar tax credit under Section 25D of the Internal Revenue Code expired December 31, 2025. Systems installed in 2026 or later are not eligible for this credit. This is especially important to flag for Alaska homeowners because many generic online guides about Alaska solar still describe the 30% federal credit as currently available — that information is outdated. Be cautious of any Alaska installer or solar quote that still advertises 'claim 30% back from the federal government' for a 2026 installation — that credit is no longer available. Confirm with a tax professional if your installer references federal incentives in their proposal.
Many rural Alaska communities are not connected to the main Railbelt grid and instead rely on isolated diesel microgrid systems operated by local utilities or village cooperatives. In those communities, electricity costs can be extremely high — sometimes 50 cents to over $1 per kilowatt-hour — because every kilowatt-hour ultimately comes from diesel fuel that must be transported in. In these off-grid or isolated-grid communities, solar paired with battery storage can be economically attractive despite Alaska's overall low average sun hours, precisely because the summer production is so strong and displacing diesel fuel saves significant cost. Alaska's Renewable Energy Fund (administered by the Alaska Energy Authority) has funded many rural solar-plus-storage projects for this reason. However, the economics vary enormously by community, microgrid utility structure, fuel costs, and available incentive programs. If you are in a rural community on an isolated diesel microgrid, the standard grid-tied solar analysis does not apply to your situation — contact your local utility or the Alaska Energy Authority (akenergyauthority.org) to understand what makes sense for your specific community context.
Alaska is one of the most complex states for solar payback analysis because so many factors are location- and utility-specific. For grid-tied Railbelt customers (Anchorage, Matanuska-Susitna, Kenai Peninsula, Fairbanks area): the combination of Anchorage's 3.3 annual peak sun hours average, avoided-cost export buyback rates (approximately 5.7 cents/kWh in Chugach territory versus 23+ cents retail), extremely high summer surplus generation, and minimal winter production makes the math more complex than most solar calculators show. If HB 164 passes and full retail-rate crediting becomes available, the economics improve significantly. For off-grid or isolated-microgrid rural communities: economics can be favorable relative to avoided diesel costs, but are highly community-specific. National-average payback estimates for Alaska are not reliable — get detailed quotes from Alaska-based installers who explicitly model month-by-month production, current utility buyback rates, and the specific avoided-energy cost for your address. Confirm current net metering terms directly with your utility before signing any contract.
DISCLAIMER: All estimates are approximations based on regional averages. Actual savings vary by location, roof orientation, utility provider, and installer. This calculator does not guarantee specific savings.
Electricity rates last updated: August 2026 (source: EIA)