Energy Storage

Energy storage has an important role in the future energy systems. It is a vital component in the development of smart grids, smart cities and smart buildings, helping to balance supply and demand, ensure continuity of supply:

  • Provide large-scale storage to support integration of renewable energy sources into the transmission network
  • Provide small-scale energy storage to enable voltage control and power quality improvement at the distribution level
  • Provide building-level storage technologies that can increase self-consumption from local generation, reduce peak power, save on energy arbitrage and enable balancing services.

Innovative Energy Storage Systems

Battery-based energy storage solutions are now enabling utilities to add the right amount of capacity at a lower cost and delivering a host of other benefits as well. Our solutions enable grid operators, renewable energy developers, distribution companies, residential, and commercial customers to store and dispatch energy in an affordable, safe, and seamless manner. Compared to traditional assets, energy storage enables transmission network operators to deploy systems in a very short period, and because the systems are modular, scaled to the amount needed changes the dynamics of infrastructure investment.

Energy Storage is Vital to The Network We Rely On

For the electric power sector to function efficiently, storage is vital to its system. Energy storage offers significant new capabilities to the transmission system, helping planners and operators future-proof their local grids at a more manageable cost, and provide meaningful path to increase utilization. The importance and attractiveness of energy storage as an integral part of the electrical supply, transmission and distribution system, is receiving attention by a wide range of stakeholders including utilities, end-users, grid system operators and regulators.

Energy Storage

Energy Storage Application

Energy storage provides a myriad of beneficial services and costs savings to the electric grid, and facility owners, allowing today’s electrical system to run significantly more efficiently, and, that greater efficiency means lower prices, less emissions and more reliable power. With the widespread adoption of renewable energy resources, energy storage is equally useful. As is often noted, these energy sources are intermittent in nature, producing energy when the sun is shining and the wind is blowing. By storing the energy produced and delivering it on demand, these clean technologies can continue to power grid and facility even when the sun has set and the wind is still. But, warehousing energy from diverse resources for use at a different time is only one of the many applications for energy storage. Storage technologies also improve the quality of power through frequency regulation, allows facilities to produce power when it is cheapest and most efficient, and provide an uninterruptible source of power for critical infrastructure and services.

Demand Charge Management

Electricity storage can be used by end users to reduce their overall costs for electric service by reducing demand during peak periods specified by the utility. To avoid demand charge load must be reduced during all hours of the demand charge period. Typically, peak demand occurs during what is sometimes called “on-peak” hours, times when electricity use and price are highest. In most regions, annual peak demand occurs during summer afternoon hours for durations ranging from four to six hours, pricing for electric energy during peak demand periods involves very high rates. Energy storage is the perfect solution to peak demand charges. Coincident peak events and other charges assessed on utilities can have a big impact on your bottom line, by combining solar energy generation and storage we can offer a wide variety of capabilities that you can’t get from PV or Storage alone. The ability to both absorb and discharge energy adds to storage’s flexibility in today’s energy system.

Commercial & Industrial (C&I)

Demand charges, time-of-use (TOU) rates, plummeting solar costs and changing utility business models make today, a very challenging time for most C&I customers.
Consider the following:

  • A large portion of the typical C&I electricity bill is the demand charge. The amount of the charge is not tied to how much electricity you used; instead, the demand charge is calculated based on the highest average demand in any 15-minute period during the month
  • Deploying diesel generators for back-up power is expensive and hard to justify based on the frequency of use
  • Utilities are adjusting TOU rates to increase power rates when you use it most
  • Some utilities are starting programs that will pay behind the meter batteries to provide ancillary services to the grid
  • The price-per-unit of solar electricity is less than the price you would pay for grid power in most country

Locating a cost-effective storage system (with or without solar) in your facility creates value in many ways:

  • Minimize demand charges by letting the battery supply the surging demand
  • Ensure security of energy supply by using the battery instead of a generator
  • Optimize your TOU bill by buying electricity to displace expensive electricity later
  • Potentially receive utility payments for ancillary services
  • With solar, increase the percentage of the system output that you self-consume.

Energy Storage can manage the amount of power required to supply customers at times when the need is greatest, which is during peak load.

Key Benefits of Energy Storage:

  • Reduce Costs avoid costly time-of-use and demand charges
  • Improve Reliability keep the power on during disruptions, demand response events and power outages
  • Integrate Renewables integrate solar and wind generation onsite
  • Increase Conservation lower carbon footprint by minimizing us of generation from fossil fuels
  • Enhance Efficiency visualize, control and automate energy management.

Who Benefits:

  • Small and large office building
  • Industrial Plants and Warehouses
  • Hotels
  • Malls, casinos and theatre
  • High-Rises
  • Multi-tenant residential buildings
  • Data centers and backup power system
  • Waste water treatment facilities

Public Sector: Municipalities, Universities, Schools, and Hospitals

Every entity in the public sector faces the stress of trying to run on smaller operating budgets while trying to reliably deliver consistent public service. Budget and reliability concerns get exacerbated by rapidly expanding regional goals to reduce emissions.
However, locating a domestically sourced and cost effective storage system (with or without solar) at each facility creates value in many ways:

  • Ensure reliability of energy supply by using the battery instead of a backup generator
  • Minimize demand charges by letting the battery supply the surging demand
  • Optimization your Time-Of-Use bill by buying electricity to displace expensive electricity later
  • Couple with solar to Save on fuel charges
  • Increase the % of the solar system’s output that you self-consume

Reduce Cost


Increse Infrastructure Reliability


Improve Carbon Footprint


Decrease Overall Energy Use

Modernizing electricity infrastructure should be the top priority for utility companies. A modern, smarter electric grid will save consumers money, help our economy run more efficiently, allow rapid growth in renewable energy sources, and enhance reliability.

For more information on energy storage contact us today at support@lewlewinc.com