Solar Hot Water

» More in this section

Solar Hot Water

Solar power converts the light of the sun into energy – a renewable energy resource that’s available almost anywhere on earth.
Solar Rating Online

Assess Your Home for Solar

Want to see if your home is a good candidate for solar thermal energy? We’ve partnered with Green Power Labs to offer the TruSolarShare Assessment for free. Begin your assessment.

Solar power technologies can be used to either provide heat for water or air, known as solar thermal energy, or generate electricity, known as solar photovoltaic, or simply solar PV.

Nova Scotia is a good location to use solar energy. While the technology doesn’t  make enough economic sense to be used for large-scale electricity generation yet, there are very practical applications for home or business use. Solar thermal systems – particularly those that provide hot water - are becoming increasingly popular in  homes and businesses throughout Nova Scotia.

Solar Hot Water Systems

A solar hot water system converts sunshine to heat energy and uses it to pre-heat your hot water in a secondary storage tank, instead of using electricity or another source to heat colder water from your municipal water system or well. Solar thermal energy is up to four times as efficient as solar PV. 

How much can you save? It depends. By installing an appropriately-sized solar hot water system, you save can roughly 40 to 60 % of your hot water related costs (e.g. washing dishes, doing laundry, taking showers) each year, with most savings occurring in the summer months. The return can be higher or lower depending on how many people live in your home, how much water your family uses, the efficiency of your solar hot water system, and how it is oriented when installed. The table below provides a rough estimate of your potential electricity savings (in kilowatt hours, or kWh) for a typical 2 panel installed system.

Number of people in home




Estimated hot water usage (Litres/day)




Annual electricity savings (kWh)