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With the rising cost and limited supply of nonrenewable energy sources, many businesses are looking elsewhere to power their buildings. Some companies reduce their carbon footprint by using solar panels; others use windmills to provide their energy needs. Some are turning to more unique and modern energy savers. A busy train station in Stockholm, for example, converts body heat into warm water that is then used to heat a nearby building. This saves them 25 percent on energy costs. Going green, however, isn't just for companies any longer. Consumers like you can take part in the action, cutting energy costs down in the process. Go green with these five modern ideas. Charge Your Devices Using The Sun If you're like the rest of us, you've got a million devices attached to you at once. Problems arise when you're out for an extended period of time and any one of them dies. Solar powered chargers offer a unique way to keep you connected, from cases to covers to water-resistant USB chargers. Some come directly built into the case, while others are mini stand-alone panels. Their use could not be simpler: Find a sunny area, plug in the charger if necessary, face the small solar panel skyward, and let the sun go to work. They are perfect for people who live in a sunny area with little cloud cover. Because of the way they produce electricity, solar cells emit no emissions, waste, or byproducts. Go Hydro If you live near an abundantly-flowing water resource like a river, a microhydropower system may be a good option. Hydroelectric power provides an economic source of energy by converting flowing water into electricity. Run-of-the-river systems, the most common type, have three components that convert water to electricity--a pipeline that delivers the water, a waterwheel that transforms the water into rotational energy, and a generator that converts this energy to electricity. Microhydropower systems are an especially viable option for people who use solar power, providing energy in the winter months when the sun is not readily available. These systems can generate up to 100 kilowatts of energy, providing well more than enough for your home. Tankless Water Heaters Rule Unlike the traditional water heaters that heat water in advance and store it until it is used, tankless heaters heat it on demand. No more running out of hot water in the shower! Some even offer temperature adjustments, convenient for those who are in danger of scalding themselves, such as the elderly or those with nerve damage in the hands. While tankless water heaters are typically more expensive than their counterparts, they are more energy efficient, and pay for themselves relatively quickly. Cut Costs with Modern Insolation A properly insolated home is more comfortable and cheaper to run than one using less quality material, and can also increase air-tightness by 70 percent. First, get an energy audit to see where your leaks are occurring. Properly install your insolation or replace windows, and try to find recycled material that is water-, fire-, and mold-resistant. If you want to know how to make your home more green and save on your next energy bill then you don’t have to look further than the nearest window. New low-e windows can help immensely with heat retention and help cut cost with modern developments. Install a Greywater System A greywater system captures and sterilizes your bath and washing machine water and reuses it for flushing the toilet. Though you must plumb the house in order to install it, the savings make up for the inconvenience. Toilet flushing typically uses 30 percent of your water intake. A greywater system would cut your bill by a third. It's estimated that you'll save around $250 annually. Though solar panels and windmills are often the first things people think of when discussing green energy, they should be far from the last. Try these unique energy-saving ideas and you'll be one step ahead of your neighbors on the energy-efficient bandwagon.