Commercial Solar Hot Water Arrives in the Midwest

If you live in the Midwest, and if you are a solar energy aficionado, you have had great reason to be jealous of most, if not all, of the rest of the country. The great states of Florida, California, Arizona, Texas, Oregon, New Jersey, Massachusetts, and North Carolina have all received headlines of leading-edge technology, especially in the commercial solar hot water space.

In this unobtrusive mid-country, which is frozen stiff for at least six months of the year, a new model and implementation of commercial solar hot water has been successfully completed. In downtown St. Paul, Minn., there is a new solar hot water heating plant that is now producing a large share of the heating for the city’s Saint Paul RiverCentre convention center. The RiverCentre offers 162,000-plus square feet of convention and ballroom space, and is connected to the Xcel Energy Center, situated on a six-acre adjoining site encompassing another 650,000 square feet of open territory.

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At a time of eye-watering energy price hikes, turning our homes into mini-power stations means we can cut bills and carbon emissions by generating a significant proportion of our heating and hot water needs ourselves.

To find out which renewable heat technology works best, the latest Ethical Consumer magazine Buyers’ Guide looked at the three main options – ground source heat pumps, biomass boilers and solar hot water.

Ground source heat pumps work by tapping into the energy which is permanently present underground. A long, coiled fluid-filled pipe buried under your garden transfers this energy to a heat exchanger which then makes hot water for heating and for use around the house.

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