The disadvantage to the approach is that the power may tend to fluctuate depending on the sunlight available. Some devices may not work as well if the acquired energy from the sun is insufficient. In some cases, power may totally fail if solar energy is limited or unavailable. On Installation Even though solar cell panels are readily available in most hardware stores and the internet, not everyone is still capable of installing the devices properly. Majority of the system usually do not include the battery storage that lets power in once the utility does not work. Grid-tie systems are installed using battery backup power to maintain critical loads even in the presence of a power failure. The Full Stand-Alone The complete or full stand-alone system is very useful for complete independence from electric utility companies and fossil fuels. Solar power is quickly gaining popularity all over the globe. It is growing at a rate of 2% per year, and if the figures continue to grow, solar energy will be the preferred source of energy worldwide. Most modern nations are encouraging people to rely on this renewable resource so that they can save more and help conserve the environment. Nonetheless, using solar thermal systems would allow you to get back the total cost within 5 years of installation, and 15 years for photovoltaic panels, after which, you can then enjoy the benefits of cutting down the total cost for your energy consumption. Does Solar Energy Reduce Cost Of Energy Consumption? Aside from that, solar energy power plants also require a place that is relatively very sunny at most times during the day, in order to get the most energy and sunlight. An area in the dessert would appear to be one of the most ideal places for such solar energy power plants to thrive in. Another problem that solar energy systems would encounter would be the integration and retro-fitting of these solar energy systems to the different houses and structures that are already constructed without any solar energy system incorporated in them. Liquid-based systems involve the use of large water tanks or thermal mass for the storage of heat. Distribution is managed through radiant slab systems, hot-water baseboards and central forced air systems. Air-based systems involve rock bins or thermal mass that hold the heated air for storing. The hot air is circulated within the home using blowers and ducts.