What Counts as a Solar Community?

What is a solar community?

The phrase is used loosely. Developers, researchers, utilities and local governments each apply it a little differently, so the first job when you meet it is to find out which meaning is in play. Broadly, two ideas sit under the label: neighbours who share the output of a solar installation, and neighbours who share a heating system fed by solar collectors.

A third, weaker use describes any area where many homes happen to have panels. That is real and useful, but it is a pattern of private choices, not a shared system.

In practice, the same words are sometimes used by marketing teams as a label for any green-branded subdivision. That is why a definition has to be read off the project's own documents and measured results rather than the name on the sign.

How does it differ from community solar?

Community solar normally refers to electricity. A group of subscribers, often including people who cannot put panels on their own roof, receive credit for the output of one shared array. Whether this is allowed, and how credits are counted, depends on provincial rules and the local utility. If you meet a scheme like this, check the current terms with your provincial energy ministry and the utility, as the framework has changed in several places. The basics of credits for rooftop owners are in Alberta net metering.

A solar community in the heating sense is a different animal. The product is hot water or warm air, delivered by pipe, and the technology is thermal collectors plus storage. The comparison is made in community solar heating vs rooftop solar.

How was Drake Landing a solar community?

Drake Landing Solar Community in Okotoks, Alberta, was the heating kind. Its 52 homes shared one solar system: 800 flat-plate collectors on the garage roofs, an Energy Centre, and 144 boreholes that held summer heat for winter. Each house drew from a neighbourhood loop rather than owning collectors of its own. The pipework side is described in the district heating loop, and the houses themselves on the homes page.

Monitoring reported that the system supplied 97 percent of space heating by 2012 and 100 percent in the 2015-16 season. Those figures describe space heating, not every energy use in the house. The community wound down from about 2020, and decommissioning began in 2024.

How do solar community, solar neighbourhood and net-zero community compare?

These terms overlap and are often used interchangeably. As a working vocabulary, a solar neighbourhood stresses the physical place, a solar community stresses the shared arrangement and sometimes the residents, and a net-zero community promises that annual energy supply matches annual use, usually for electricity and sometimes for all fuels. Only the last makes a measurable claim, and it depends on where the boundary is drawn. For the home-scale version, see net zero home in Canada.

The difference between heat and electricity matters when reading claims. A project that says it supplies most of its energy from solar should say whether it means space heat, hot water, electricity or some mix, and over what period. At Drake Landing the headline numbers applied to space heating over a heating season, which is a much narrower claim than total household energy.

What should you ask about a project that uses the term?

1. Is the shared energy heat or electricity?
2. Is the share of supply measured or only modelled, and over what period?
3. How does the system cope with winter, and is there storage?
4. Who owns and maintains the shared equipment, and what happens if that owner leaves?
5. What does a resident pay, and what happens if the system underperforms?

The ownership question matters most over the long run, and it is picked up in district energy vs individual heating.

Quick answers