Toronto, Canada [RenewableEnergyAccess.com] Canadian property owners can now qualify for a new nationwide $3500 federal grant to encourage the retrofit of geothermal heat pumps in existing homes. The ecoENERGY retrofit program began on April 1, 2007 and will run through March 31, 2011. The program also provides grants for other renewable technologies and efficiency upgrades. The maximum combined grant is $5000. Additionally, the Government of Ontario’s Ministry of Energy has extended a sales tax rebate for any sales tax paid to purchase residential green energy systems including wind energy, micro hydro-electric and geothermal energy systems.