Recently, there was a revelation that was myth busting. A study has now found out that storing up solar energy for usage at night times can potentially increase both the consumption of energy and also the emissions when compared to sending excessive solar energy on to the utility grid directly. In one paper that was published in the Nature Energy, the researchers have assessed the trade-offs of home energy storage and households with already existing solar panels, throwing light on the advantages and also the drawbacks of having added storage looking at the present day’s full energy grid mix.
As per a research from the Cockrell School of Engineering, Austin, the houses with solar panels do not actually need on-site storage for reaping the best economic as well as environmental benefits of this form of energy. As per the SEIA (Solar Energy Industry Association), the actual number of the rooftop solar installations actually grew to nearly one million plus households in the U.S. in the year 2016. There is an increasing interest in utilizing the energy storage for capturing the solar energy for reducing the reliance on the traditional utilities. However, for now some houses have this on-site storage for holding their solar energy for later usage at home.
Mr. Michael Webber stated that the great news here is that this storage is not actually required for making solar panels cost effective or even useful. This will also counter the existing myth that this storage is certainly required for integrating the distributed solar power because it does not produce energy during nights. The researchers have found out that saving up the solar energy for night usage actually increases the household’s energy consumption on an annual basis when compared to the usage of solar panels without storage as the storage consumes some of the energy each time it goes on to charge or discharge. The researchers have predicted that including the energy storage in the households with solar panels do increase the annual consumption of energy by nearly 325 to about 590 KiloWatt – Hours.
Robert Fares and Webber scanned through the impact of home energy storage by using electricity data from nearly 100 plus houses in Texas, which is a part of this smart grid testing bed that is managed by Pecan Street Inc, a renewable energy and also a smart technology firm that is located at Austin. If the house owner is looking to reduce his or her environment footprint, including storage will not be making the household greener; however, it should not be dismissed, stated the researchers. Fares stated that solar with storage is still better than having no solar.
The analysis went on to show that the solar energy at present offers some environmental benefits than merely sending it straight off to grid as the energy lost to the storage inefficiency is all made of fossil electricity from grids.