The excess energy captured by the sun also has its negative side. First, the number of households that can switch to solar energy is limited by the capacity of the grids, which withstand high pressure during peak hours. To solve this problem, Moixa, the British alternative to Tesla and its Powerwall, is testing in Oxpring, South Yorkshire, how a home storage cluster works that would ease pressure on the network and allow more families to join the renewable.
The trial initiative, in which they have invested around 280,000 euros, started at the beginning of the year with the free installation of Moixa units Smart home batteries in 40 households in this community, 30 of them equipped with solar panels and 10 without them. The goal: to unite them and create a “Virtual power station”. This is precisely what is being analyzed; the ability of this innovative solution to reduce peaks in solar production that enter the grid at times when demand is low.
This may not seem like a problem at first, but it is; especially in small communities where the grid is either strengthened in some way or it is unable to withstand the peak hour pressure of renewable generation without incurring additional costs.
This problem limits the expansion of solar power into homes so much that, according to Andy Heald, director of Energize Barnsley, a Moixa collaborator in this initiative with Northern power grid, was only able to install photovoltaic panels “Two or three houses in the area due to network restrictions”.
So, what is expected with this pilot test is that the virtual power station can contain the peaks generally generated at noon, when the sun is shining the most, so that the pressure on the network is limited and with this, more homeowners can install panels in their homes with the current substations and wiring.
If the results work as expected, operators consider that domestic battery clusters can “Save customers millions reduce the need to upgrade infrastructure “. The management of these battery clusters will fall to Moixa, whose CEO, Simon Daniel, has no doubts in the muscle of this idea of ”significantly reduce peaks in energy production “ and for “That more homes go solar without, therefore, imposing new costs on network operators”.
By analyzing whether these expectations are being met, households that have been fitted with these smart batteries can already feel it on their bills. The savings from having the panels, estimated on average at 30%, will be added by at least an additional 20% thanks to this equipment, which will allow energy to be maintained without it going to the network, for use in hours without Sun .