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Natural Resources Canada.

ecoENERGY Retrofit – Homes:
Solar Domestic Hot Water Grants
in Multi-Unit Residential Buildings

This is intended for solar equipment installers and other professionals on how to
calculate the ecoENERGY Retrofit – Homes grant for solar domestic hot water (SDHW)
collectors and systems in low-rise multi-unit residential buildings (MURBs).

Definition of Eligible MURBs

To be eligible for the ecoENERGY Retrofit Homes grant program, a MURB must have:

  • at least 50 percent of the total floor area (including the basement) that is
    used as one or more permanent residences;
  • less than four storeys above grade;
  • a footprint of 600 square metres (6 458 square feet) or less;
  • no more than 20 units;
  • for a MURB of four units or more, no more than two exterior entrances
    that provide access to all spaces; and
  • without commercial equipment not typically found in a home (e.g., commercial
    exhaust fans, commercial dryers).

Semi-detached (side-by-side) units with their own attic and basement are
considered as single family homes.

MURBs that do not meet the above definition but that have a floor area no greater
than 5000 square metres may be eligible for the ecoENERGY Retrofit - Small and
Medium Organizations incentive ( MURBs at least four
storeys above grade or with a footprint greater than 600 square metres may be
eligible for the ecoENERGY for Renewable Heat incentive (

Attachment 1: Quick Note

This Microsoft Word document contains a "Quick Note" distributed to service
organizations across the country. It offers detailed calculations and procedures.
Both system installers and service organizations are receiving the same information.

Contact a Tri Solar representative

Attachment 2: Calculator

This Microsoft Excel document includes a calculator that you can use as one of the
approaches to calculate the grant for MURBs.

Contact a Tri Solar representative

For More Information:

Your best sources of information are the service organizations and energy
advisors in your area. For a list, visit the following Web page:

If you cannot obtain the information you need and you need to contact NRCan
directly, you can use this contact form:

Contact a Tri Solar representative

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