A solar water heater is great for a pool or hot tub. These systems use the heat of the sun, along with energy generated by the sun, and use them to heat your hot tub and pool.
Larger solar panels are not necessarily a good option. The quality of each panel is affected by many factors, like wattage and warranty. Consider everything when making a hefty purchase like this.
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You might be wondering how you can use solar energy, without having to spend a fortune. Solar energy systems can be expensive, but they can also be very affordable. Try using solar powered lights on your walkway or around your yard. You can also add solar panels slowly to your home overtime to bring down some of the costs little by little.