Exploring Distributed Energy Resources (DERs) Uptick in the US
                     Exploring Distributed Energy 
Resources (DERs) Uptick in the 
US
As the country moves away from centralized power plants towards more localized and 
decentralized energy production, Distributed Energy Resources (DERs) are playing a 
crucial role in reshaping the US energy grid. This shift is not just about generating electricity 
closer to where it is consumed but also about creating a more resilient, flexible, and 
sustainable energy system. According to the US Department of Energy (DOE), more 
than 25% of new energy generation capacity added to the grid in the last few years has 
come from DERs. In simple terms, these resources refer to small-scale units of local 
generation connected to the grid at the distribution level. The Environmental Protection 
Agency (EPA) reports that the widespread adoption of DERs could reduce US carbon 
emissions by up to 40% by 2050. Additionally, DERs promote biodiversity by reducing the 
need for large-scale energy infrastructure projects that can disrupt ecosystems. Hence, 
DERs are increasingly gaining traction as they provide a sustainable and cost-effective 
alternative to traditional energy sources. 
Key Types of DERs Making Strides in the US
1. Solar Panels: Solar energy stands as the leading type of Distributed Energy 
Resource (DER) in the US, with more than 2 million installations nationwide, as 
reported by the Solar Energy Industries Association (SEIA). Solar photovoltaic (PV) 
systems are extensively deployed across residential, commercial, and utility-scale 
sectors.
2. Wind Turbines: Traditionally linked to large wind farms, small-scale wind turbines 
are increasingly being adopted in rural and suburban regions. According to 
the American Wind Energy Association (AWEA), these smaller turbines 
contributed over 100 MW of power to the US grid as of 2020.
3. Energy Storage Systems: Essential for maintaining grid stability and balancing 
energy supply and demand, energy storage systems are witnessing rapid growth. 
The US Energy Information Administration (EIA) highlights that 1,400 MW of new 
storage capacity was added in 2021 alone, marking a significant expansion in this 
sector.
4. Microgrids: Microgrids are self-contained energy systems capable of operating 
independently from the main grid. They are crucial for boosting grid resilience, 
especially in disaster-prone areas. The National Renewable Energy Laboratory 
(NREL) reports that there are currently over 460 microgrids in operation across the 
US, contributing to a more reliable and secure energy network.
How is energy stored in the DERs?
The EIA notes that energy storage can reduce outages by up to 30% in areas with high 
renewable energy penetration. The most common form of energy storage is batteries used in
residential and commercial DER systems. Lithium-ion batteries, in particular, have 
dominated the market due to their high energy density and declining costs. According to the 
DOE, the cost of lithium-ion batteries has fallen by 89% since 2010.
Advanced battery technologies such as solid-state and flow batteries are also being 
explored as they promise higher efficiency, longer lifespan, and improved safety over 
conventional lithium-ion batteries. For example, the Pacific Northwest National Laboratory 
(PNNL) is pioneering research in flow batteries, which could revolutionize large-scale energy
storage with their ability to store large amounts of energy for extended periods.
Similarly, pumped hydro is a traditional form of energy storage that uses gravitational 
potential energy to store electricity. It accounts for about 95% of the world's storage 
capacity, according to the International Hydropower Association (IHA). Added to that is 
the hydrogen storage technology involves utilizing surplus renewable energy to produce 
hydrogen through electrolysis. The hydrogen produced can be stored and later used as a 
clean energy source. The National Renewable Energy Laboratory (NREL) is currently 
investigating the potential of hydrogen storage for long-duration energy storage solutions 
and its capacity to aid in decarbonizing sectors such as transportation and industry.
Small-Scale Energy Generation Systems in the US
 Residential and Commercial Solar PV Systems
These systems are leading the DER revolution with attractive federal and state incentives 
and skyrocketing solar energy adoption. The Federal Investment Tax Credit (ITC) offers 
a 30% tax credit for solar systems on residential and commercial properties, significantly 
reducing the upfront cost for consumers. States like California and Texas have been at the 
forefront of solar integration. For instance, California's aggressive solar policies, such as 
the Net Energy Metering (NEM) program, have made it a leader in solar energy, accounting
for nearly 40% of the country's total solar capacity.
 Localized Wind Energy Production
Small-scale wind energy production is gaining traction in rural and suburban America. These
turbines can be particularly beneficial for farms and rural businesses, providing a clean and 
cost-effective energy source. The US Department of Agriculture (USDA) has supported 
small-scale wind projects through grants and loans, recognizing their environmental and 
economic benefits. In Vermont, for example, small wind turbines provide power for farms, 
reducing energy costs and carbon footprints while contributing to local energy resilience.
 Innovative Technologies in Small-Scale Generation
Beyond solar and wind, innovative technologies like micro-hydro systems and biomass 
generators are emerging as viable DER options. Micro-hydro systems, which use flowing 
water to generate electricity, are particularly suitable for rural areas with access to rivers and
streams. Biomass generators, which convert organic materials into electricity, offer a 
sustainable option for waste management while producing energy. Successful case studies 
include Alaska's remote communities utilizing micro-hydro systems and Michigan farms 
adopting biomass generators for both energy production and waste reduction.
Expansion of US Microgrids and Local Energy Networks
Microgrids are self-sufficient energy systems that serve a specific geographic footprint, 
such as a college campus, hospital complex, or neighborhood. They can operate 
independently or in conjunction with the main grid, providing enhanced reliability and energy 
security. Examples of successful microgrids in the US include the Bronzeville Microgrid in 
Chicago, which integrates solar power, energy storage, and advanced grid management 
technologies to serve over 1,000 customers.
The US Department of Energy has launched several initiatives to promote microgrid 
development, including the Grid Modernization Initiative, which aims to enhance grid 
reliability and resilience through advanced microgrid technologies. Thus, the potential for 
widespread adoption of microgrids in the US is vast, particularly in regions vulnerable to 
natural disasters or with aging infrastructure.
Case Study: Stone Edge Farm Microgrid – A Model for Sustainable and Resilient 
Energy Systems
This microgrid project in California is established as a response to the frequent power 
outages and the growing need for sustainable energy solutions. Stone Edge Farm has 
created a fully operational microgrid that integrates a variety of Distributed Energy 
Resources (DERs), including solar panels, wind turbines, hydrogen fuel cells, and advanced 
battery storage systems. The microgrid is designed to operate autonomously from the main 
grid during outages, enhancing energy resilience and reliability for the farm and its 
surrounding community.
What makes this microgrid particularly innovative is its use of cutting-edge technology for 
real-time energy management, incorporating artificial intelligence (AI) and machine learning 
algorithms to optimize energy production, storage, and consumption. The project also 
explores the potential of hydrogen as a storage medium, using surplus solar energy to 
produce hydrogen fuel, which can be stored and used later to generate electricity, providing 
a sustainable, zero-emission solution. It serves as a model for future microgrid 
implementations across the US, demonstrating how a combination of renewable energy 
sources and advanced technology can create a resilient, self-sustaining energy system that 
not only meets local energy needs but also contributes to broader climate and energy goals.
What does the Future of DERs Look like?
As DER technologies develop and become more affordable, there could be a shift towards a 
more participatory energy environment, where consumers have increased influence over 
their energy production and consumption. The integration of AI, IoT, and blockchain may 
contribute significantly to this change, supporting more efficient, reliable, and secure energy 
systems. Pilot projects like the Brooklyn Microgrid in New York have demonstrated the 
potential of blockchain to enable local energy trading, where residents can buy and sell 
excess solar energy directly with their neighbors. Thus, DERs are gradually reshaping the 
US energy landscape by providing a decentralized and potentially more resilient and 
sustainable alternative to conventional energy systems.