Can I sell excess solar power back to ENMAX in Calgary?

Yes, you can send excess solar electricity back to the grid in Calgary and receive a credit on your electricity bill under Alberta's Micro-Generation Regulation. This is not technically "selling" power — it is a credit system where the excess kilowatt-hours your solar panels produce are fed back through your meter and credited at the retail electricity rate on your next bill. The credit offsets your consumption during times when your panels are not producing, such as evenings, cloudy days, and the darker winter months.

Alberta's Micro-Generation Regulation, established under the Electric Utilities Act, allows residential and commercial customers to install renewable generation systems up to 5 megawatts. For residential solar, most systems are 5 to 12 kW. When your system produces more electricity than your home is consuming at any given moment — typically midday on sunny days — the excess flows back through your bidirectional meter to the grid. Your electricity retailer (ENMAX, Direct Energy, ATCO, or whichever provider you use in Alberta's deregulated market) credits you at the same retail rate you pay for consumption. If you generate more than you consume in a billing period, the credit rolls forward. At the end of the year, any remaining credit is typically paid out or zeroed depending on your retailer's specific terms.

The electrical setup for grid-tied solar involves several components that require a licensed electrician. Your home needs a bidirectional meter — your retailer will arrange the meter swap at no cost once your micro-generation application is approved. The solar system connects to your main electrical panel through a dedicated breaker, and a grid-tied inverter converts the DC power from your panels to AC power that matches the grid's voltage and frequency. The inverter must be CSA-approved and listed for use in Canada. Anti-islanding protection is built into all approved inverters, meaning your system automatically shuts down during a grid power outage to prevent back-feeding electricity into lines that utility workers may be servicing — this is a critical safety feature required by the Canadian Electrical Code.

The application process involves your solar installer submitting a micro-generation application to your wire service provider (ENMAX Distribution in Calgary, or FortisAlberta for communities outside city limits). The application is reviewed, and once your electrical installation passes inspection by a Safety Codes Officer and your bidirectional meter is installed, you are approved to generate. The entire process from application to approval typically takes 4 to 8 weeks after your system is physically installed and inspected.

One important consideration for Calgary homeowners is that the financial benefit of net metering depends heavily on your electricity rate, which fluctuates in Alberta's deregulated market. When rates are high (15 to 20+ cents per kWh), your credits are worth more. When rates drop (8 to 10 cents per kWh), the payback period extends. Locking in a fixed-rate electricity contract can provide more predictable solar economics. If you are considering solar and need your electrical panel assessed for capacity, Calgary Electrical Services can match you with a licensed electrician to evaluate your setup.