With electricity prices rising, north facing solar panels are now often worth the money. Long ago, when the year was 2010, electricity was cheaper than it is now and solar panels were way more expensive. Installing solar just about made financial sense on a south facing roof. But installing on a north facing roof made absolutely no sense.
But installing on a north facing roof made absolutely no sense. That’s because a north facing solar system typically produces about 56% of the output of a south facing system. Since 2010, the cost of electricity has risen from 11p per kilowatt hour to over 30p per kilowatt hour. That’s almost a three-fold increase.
So you can see here that my north facing panels would only produce 57% the amount of energy compared to the south facing panels. So already that’s going to give you an idea on how worthwhile it is having north-facing panels installed, it’s clearly going to take a lot longer than south-facing panels for them to cover their own costs.
This maximizes the energy production over the course of the year, through both summer and winter. Sometimes, however, the homeowner will want to add modules on the north-facing roof. This may be for aesthetic purposes, or sometimes because the south-facing rooftop isn’t fit for solar. The most common rule-of-thumb is that you simply can’t do that.
It’s considered common knowledge that you want to point your solar modules south, toward the equator (assuming you are in the northern hemisphere). This maximizes the energy production over the course of the year, through both summer and winter. Sometimes, however, the homeowner will want to add modules on the north-facing roof.
Ideally, your roof should be facing southwards at a 30-45 degree angle – although east- and west-facing solar panels can work well too. You’ll need to make sure the roof is free from the shade as well. If your roof doesn’t fit the criteria, then you might struggle to set up an effective solar PV system.
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These include your energy consumption, level of shading, ideally finding a north-facing direction, and finding a roof pitch of 30 to 40 degrees (if you''re placing them directly on the roof or using an additional mounting frame to properly angle …
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