Solar Builder

JUL-AUG 2018

Solar Builder focuses on the installation/construction of solar PV systems. We cover the latest PV technology (modules, mounting, inverters, storage, BOS) and equip installers/contractors with tips and tools to make informed purchasing decisions.

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SOLARBUILDERMAG.COM | 27 Brad Hansen, president and CEO of EnSync Energy Systems, believes solar + storage for the home is still "in the dark ages." EnSync Energy Systems has built a reputation for deploying high- value distributed energy resources (DERs) in the C&I segment. So why is Hansen discussing residential solar + storage? Well, EnSync has just launched a Home Energy System that will not only address some of the antiquated architecture of current home storage systems but also invent an entirely new project design concept. At the basic level, the EnSync Home Energy System combines solar, energy storage, power electronics and Internet of Energy control into one platform. It has the advantage of leveraging tech- nology and lessons learned from EnSync's C&I business to achieve an outcome like lessening thermal stability concerns of repackaged lithium-ion batteries that are often used in a home energy storage applications. Instead, EnSync pairs a residential-scale version of its modular Matrix Energy Management system with thermally resilient lithium-ion batteries and its DER Flex Internet of Energy solution that are all designed to work together. "Most [current systems] are signifi- cantly underpowered and cannot sup- port the entire home if the grid electric- ity is out, or they have issues discon- necting and reconnecting to the grid during an outage," Hansen says. "If the home is off-grid, many cannot reliably perform if high inrush currents are cre- ated by the start-up of appliances like refrigerators or air conditioners." Peer-to-peer exchange This is the part that could change the sector. The EnSync Home Energy System introduces True Peer-to-Peer energy exchange technology. The goal here is to enable individual residential units in a property to be linked into a network behind the utility meter to provide highly efficient, direct energy exchange between units. Suddenly property developers, property managers and homeowners' associations can pro- vide seamless and economical transfer of excess energy from any given resi- dence to any other residence in the network with excess demand via EnSync's DC-Link. "The future of the electricity market will be individual homes and building owners operating in a 'spot market' for the buying and selling of electricity across a network," Hansen says. "At EnSync, our mission for the company is simple: the democratization of energy through innovative and economic ener- gy systems. Homeowners and property owners that install our products today do so with the confidence that as the market for energy continues to be radi- cally changed, they are not only pre- pared for it, but can capitalize on it and profit from it." A single residence, multifamily build- ing or entire neighborhood could reduce consumption on the grid and possibly open up a new revenue stream. The sharing of electricity between intercon- nected residences on a True Peer-to-Peer energy exchange network prioritizes the use of solar generated or stored electric- ity ahead of that from the utility grid for any residence in the network. The net- work can also be configured as "non- export," meaning no excess generation for any unit goes back to the utility grid. This capability is becoming more critical as several states and jurisdictions pro- hibit or economically penalize energy export. Additionally, many utilities are in the early stages of implementing time-of-day electricity rates and are EnSync's new energy system connects a group of homeowners in one solar + storage network SOLAR + SHARING

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