Does solar pay in Alberta? A full-lifecycle household calculation

Is solar worth it in Alberta?

Solar pays in Alberta only when production, own use, export credits and full cost line up. The Alberta Utilities Commission (AUC) says a system must be meant to meet part or all of your yearly use. Test each fact against your bills and a written quote.

Solar can pay in Alberta. It can also miss its promised return. The answer depends less on a province-wide sunshine slogan than on five household facts: what the system produces on your roof, what you use while it is producing, what your retailer pays for exports, what the complete project costs, and how long those cash flows last.

A useful decision is not “solar is always worth it” or “solar never pays.” It is:

At this home, under stated production, tariff and cost assumptions, does solar beat the other uses of the money with enough margin for the risks?

The three worked cases below use the same 6.5 kW system and reach three different answers: attractive, nearly break-even and clearly unattractive. They are hypothetical calculations, not quotes, forecasts or promises about your home.

What should I check before I count solar panels?

Before you count solar panels, check your own electricity use, month by month. The Alberta Utilities Commission (AUC) says a system must be meant to meet part or all of your use. A bigger roof does not justify a bigger system.

Collect twelve months of electricity consumption in kWh and keep the months separate. A yearly total helps size the system. Monthly or hourly data helps show how much generation you would use immediately and how much you would export.

Alberta's 2026 micro-generation guideline says a unit must be intended to meet all or part of the customer's total annual energy consumption at the site. EPCOR also asks Edmonton applicants for their latest 12-month consumption and says annual generation is not permitted to exceed 100% of annual consumption under AUC Rule 024. A larger roof does not by itself justify a larger residential micro-generation system.

Keep these items together:

• the service address and Site ID;
• twelve monthly kWh totals, plus interval data if available;
• planned changes such as an EV, heat pump, suite, move or long absence;
• roof direction, pitch, usable area and shading;
• roof age and likely replacement date;
• main-panel capacity and any upgrade included or excluded from the quote.

An old home's history can inform a range after a move. It is not the new home's measured consumption.

How much will my panels produce?

Your panels will produce what a solar model predicts, if the inputs are right. PVWatts, from the National Laboratory of the Rockies, estimates output from system size, location, tilt and shade. Output falls slowly as panels age. Ask your installer to rerun the model for your address before you sign.

PVWatts estimates grid-connected PV production from system size, location, module and array type, tilt, azimuth and losses. Natural Resources Canada's solar-resource tools provide Canadian photovoltaic potential in kWh per installed kW for different locations and orientations. Use either as a first screen; use a site assessment for shading, structural and electrical conditions.

The examples on this page use 1,245 kWh per installed kW in year one, an assumed Edmonton output of about 1,245 kWh per kW a year for a south-facing array at latitude tilt. A 6.5 kW system therefore starts at:

6.5 kW × 1,245 kWh/kW = 8,092.5 kWh

That is a transparent benchmark, not a production guarantee. Your azimuth, tilt, snow, shade, equipment and local weather can move the result. Before acting, rerun PVWatts for the actual address and quote design, then compare its monthly output with the home's monthly or hourly load.

Output also declines over time. A large NREL review of almost 2,000 published degradation rates found a median of about 0.5% per year. The examples use that as a scenario assumption:

production in year t = 8,092.5 × 0.995^(t−1)

Year 25 production is about 7,175 kWh under that assumption. The actual module warranty and design should replace the benchmark in a purchase decision.

What is an exported kWh worth?

An exported kWh is worth whatever credit your retailer pays, which can differ from the price of power you use. The Government of Alberta says you and your retailer agree on the credit. Check how long a rate lasts. Do not assume one summer rate continues.

Electricity used in the home while the array produces it avoids importing one kWh. Electricity not used at that moment goes through a bidirectional meter and is credited by the retailer. Those two kWh need not have the same value.

For each year:

gross value = self-used kWh × avoided import value + exported kWh × export credit

The avoided import value should include only charges that actually fall when grid imports fall. Do not divide the entire old bill by kWh and call that the solar value. The Utilities Consumer Advocate says delivery costs are largely fixed and lists distribution, transmission, local access, delivery and balancing charges that can remain. Read the applicable tariff and bill to separate fixed and usage-related amounts.

Credits for exports are explained in selling solar power back to the grid.

For exports, Alberta says the customer and retailer agree on compensation and billing. Small micro-generators receive credits for excess generation through their retailer; unused credits must be paid at least annually under the current guideline. A high promotional export rate is valuable only for the period and conditions actually offered. Do not extend one summer rate through 25 years unless a contract really supports that assumption.

Self-consumption also needs evidence. A household empty during sunny hours may export more than one with daytime cooling, laundry, an EV or a controllable hot water load. Annual “net zero” production does not mean imports and exports cancel at the same financial value.

To compare solar with your own bills, Start the bill check. Send us your gas and electricity bills as PDFs. No PDF? Screenshots or a photo work too. We compare the plans at your address, free during our launch period.

What costs should a solar quote include?

A solar quote should show the full cash price and what it covers. EPCOR advises at least three contractor quotes and a site visit. Ask about panels, inverter, permits, upgrades, tax, warranty work and removal, so each quote covers the same items.

Ask each installer to show the cash price and exactly what it includes:

• panels, inverter or microinverters, racking, wiring and monitoring;
• design, structural review, permits, inspection and interconnection work;
• electrical-panel, service or roof upgrades;
• GST and any financing or dealer charge;
• warranty labour, truck rolls and monitoring fees;
• expected inverter or component replacement;
• added insurance cost, if any;
• panel removal and reinstallation for future roof work;
• end-of-life removal, recycling or residual value.

EPCOR advises at least three contractor quotes and a site visit. A low price that omits panel upgrades, permits, warranty labour or roof work is not comparable with a turnkey quote.

Do not subtract a grant or loan until the current program confirms eligibility. As of 10 September 2026, Natural Resources Canada says the Canada Greener Homes Loan is closed to new applications because funding is fully committed. An already approved borrower may have different rights. A search page or installer claim that still advertises the federal interest-free loan to new applicants is out of date.

What do three solar examples show?

Three made up examples use one system and reach three different answers. They are not quotes or forecasts. Output comes from a PVWatts style model of the National Laboratory of the Rockies. Cost, own use and export value decide the result, so replace each input with your own.

All three examples use a 6.5 kW array, 8,092.5 kWh in year one, 0.5% annual degradation, 25 years and a 4% real discount rate. Dollar values are constant 2026 dollars. No incentive, tax credit, home-value increase or carbon payment is assumed. The examples use zero end-of-year-25 salvage value and no removal charge; add a quoted end-of-life cost when known. A C$3,000 removal cost at year 25 would reduce each NPV by about C$1,125. “Operating cost” is a scenario allowance, not a forecast. The inverter event occurs in year 15. The table discounts each year's net benefit once; it does not add a separate opportunity-cost charge.

The attractive case works because the starting cost is low and exported energy retains high value. It is vulnerable to the export assumption: a short-lived premium cannot be treated as a 25-year contract.

The borderline case is the useful warning. It appears to return more than C$10,000 in undiscounted cash after recovering the purchase price, yet its NPV is close to zero after timing and the 4% alternative return are recognized. A small change in quote price, output, tariff or roof timing reverses the decision.

The unattractive case combines a high installed price, low self-use, low export value and a roof event. More sunshine does not rescue a project from those cash flows.

These are examples of the calculation, not “typical Alberta returns.” Replace every input with a dated source for the actual home.

Does financing change the payback?

Financing can change the payback you feel, because loan payments replace the upfront cost. It does not change how much power the panels make. Natural Resources Canada says its Greener Homes Loan is closed to new applications. Check any program before you count on it.

Compare the cash project first, then the financing offer. Record the amount financed, APR, term, fees, security, prepayment rights and monthly payment. For illustration, financing C$18,500 for 10 years at 7% with equal monthly payments is about C$214.80 per month, C$25,776 total, or C$7,276 of nominal interest. That is arithmetic, not a current loan quote.

Choose one consistent method:

• For a project NPV, treat the full cash price as the initial investment and use the chosen discount rate. Do not also subtract a duplicate “lost investment return.”
• For an equity/household cash-flow view, replace the financed portion of the upfront cost with the actual loan payments and fees. Do not also subtract the same financed principal as if it had been paid in cash.

Zero-interest financing still has eligibility, timing and repayment obligations. It can improve household timing without making a weak project physically produce more power.

What roof, inverter and moving risks should I count?

Roof work, inverter repair and a move are separate risks, so give each its own line in the cash flow. EPCOR advises a site visit to check roof and electrical limits. Put each event in the year it is likely to happen.

If the roof may need replacement before the array's analysis period ends, get three numbers: replace the roof first, install now and remove/reinstall later, or defer solar. Put the chosen event in the year it is likely to occur. Do not hide it in a vague contingency or count a roof replacement that the house needed anyway as entirely caused by solar.

Use the quoted inverter warranty and replacement scope. “Panels warranted for 25 years” does not mean every system component and every labour visit is covered for 25 years.

If you may move, model the years you expect to own the home and use a conservative, separately supported resale value. The remaining undiscounted lifetime benefit is not automatically added dollar-for-dollar to the sale price.

What should a solar quote show before I sign?

Before you sign, a solar quote should show a power estimate for your address, the full cash and loan price, and your export credit terms. Natural Resources Canada solar tools can check the estimate. Ask how the result changes if output, prices or costs move.

Before signing, require:

1. an address-specific monthly production estimate with losses and degradation;
2. twelve months of household use and a defensible self-use/export split;
3. the current import plan, export credit, fees, expiry and switching rules;
4. complete cash and financed prices, including GST and excluded work;
5. roof, electrical-panel, inverter, maintenance, insurance and removal scenarios;
6. simple payback, NPV and sensitivity to output, tariffs, cost and ownership term;
7. permits, interconnection responsibility, warranties and a commissioning plan.

The answer can be “yes,” “no,” or “close enough that another quote or a year of better load data is worth more than a confident guess.”