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The Benefits of Solar Energy and the Military

By: Eric Huesca, SEO Content Writer
July 19, 2023

In an era of increasing global environmental consciousness and rising energy demands, solar energy has emerged as a viable and sustainable alternative to fossil fuels. Solar energy offers numerous benefits, not just for households and businesses, but also for government organizations and institutions such as the military. This article delves into the many ways the military benefits from utilizing solar energy, from improving energy efficiency and resilience to reducing costs and promoting sustainability. 

satellite with solar panels.

The State of Energy Use in the Military

Energy use in the military has become a significant concern in recent years, especially given the pressing need for global carbon emissions reduction. The Department of Defense (DoD) is one of the largest single consumers of energy globally, using vast amounts of energy for its operations, ranging from fuel for vehicles and aircraft to electricity for bases and facilities. 

Over the past decade, the military has shown increasing recognition of the strategic importance of energy. Not only does excessive energy use come with a hefty financial cost, but the logistics of supplying energy, particularly in combat zones, can also pose a significant challenge and risk. To this end, improving energy efficiency and reducing reliance on traditional fossil fuels has become a strategic imperative for the DoD. 

In addition, the military is also facing increasing pressure to contribute to broader societal goals of reducing carbon emissions and combating climate change. As a result, there has been a growing emphasis on transitioning to renewable and more sustainable sources of energy. From solar-powered bases to biofuel-powered jets, there are numerous initiatives underway to reduce the carbon footprint of the military and increase its resilience to potential disruptions in energy supply. 

The military’s efforts in this area are not just beneficial for the environment. The adoption of renewable energy technologies can also enhance the military’s operational capabilities. For instance, deploying solar panels and batteries at forward operating bases can reduce the need for fuel convoys, which are often targets in conflict zones. Furthermore, renewable energy sources can provide more reliable power supplies for bases and facilities, ensuring continued operations even in the event of grid outages. 

Therefore, the state of energy use in the military is a complex issue that encompasses not just operational and financial considerations, but also environmental and strategic ones. Despite the challenges, the military’s transition towards more sustainable and efficient energy use represents an important part of the global shift towards a more sustainable energy future. 

The Case for Solar Energy in the Military

The case for solar energy in the military is compelling on multiple fronts. First, the operational and strategic benefits are significant. Deploying solar energy solutions, both at domestic bases and in forward-deployed locations, can enhance energy security by reducing reliance on supply lines that can be vulnerable to disruption or attack. Solar energy, when paired with energy storage systems, can provide reliable power even in remote locations or during blackouts, ensuring that crucial operations can continue uninterrupted. 

From a financial perspective, investing in solar energy also makes sense. While there are upfront costs associated with installing solar panels and associated infrastructure, the long-term savings from reduced fuel costs can be substantial. Additionally, the cost of solar energy has been falling steadily, making it an increasingly economical choice. In fact, the U.S. Department of Defense has already entered into long-term power purchase agreements for solar energy that lock in stable, predictable energy costs, helping to shield the military from fluctuations in fossil fuel prices. 

Beyond the operational and financial benefits, adopting solar energy also aligns with broader environmental goals. The military, like other sectors of society, has a role to play in addressing climate change. Transitioning to renewable energy sources such as solar is one way the military can reduce its carbon emissions and environmental impact. 

Lastly, the push for solar energy within the military can also drive innovation in the broader solar industry. The military’s stringent requirements for reliability and performance can spur the development of advanced solar technologies, which can eventually find their way into civilian use. 

Implementations of Solar Energy in the Military

Implementations of solar energy in the military are numerous and showcase the versatility and adaptability of this renewable energy source. On military bases, large-scale solar installations provide a significant percentage of the base’s electricity needs, reducing dependence on the local power grid and ensuring a reliable source of power in the event of grid failures. 

A notable example is the Nellis Solar Power Plant at Nellis Air Force Base in Nevada, one of the largest photovoltaic systems in North America. The system, comprised of over 70,000 solar panels, generates about 25% of the total power used at the base, leading to substantial cost savings and a reduction in greenhouse gas emissions. 

On a smaller scale, solar panels are also being incorporated into the design of military facilities, from office buildings to barracks, to provide onsite power generation. The U.S. Army has a goal to make all its installations “net zero” in terms of energy use, meaning they produce as much energy as they consume. Solar energy plays a crucial role in achieving this target. 

In addition to stationary uses, solar energy is increasingly being used in mobile and portable applications. Flexible, lightweight solar panels can be used to charge batteries for communications equipment, navigation devices, and other essential gear. This reduces the need for fuel-powered generators and battery resupply missions, which can be logistically challenging and potentially dangerous in a combat environment. 

Challenges and Solutions in Adopting Solar Energy in the Military

The implementation of solar energy in the military is not without its challenges. One of the most significant hurdles is the upfront cost of installing solar power systems. While the price of solar panels has decreased significantly over the past decade, the cost of installation can still be substantial, especially for large-scale systems on military bases. Additionally, ongoing maintenance and potential repairs add to the total cost of ownership. 

However, the long-term savings in energy costs can offset these upfront expenses. Plus, numerous federal and state incentives exist to encourage the adoption of renewable energy, including grants, tax credits, and other forms of financial assistance. The Department of Defense also has various initiatives in place to fund renewable energy projects, such as the Environmental Security Technology Certification Program (ESTCP) and the Strategic Environmental Research and Development Program (SERDP). 

A further challenge involves ensuring that solar power systems are robust and reliable enough to meet the military’s stringent operational requirements. Military operations cannot afford downtime, and solar installations must be able to withstand a range of environmental conditions, from extreme heat to harsh winters. 

Technological advancements are addressing this issue. For example, newer solar panels are designed to be more durable and efficient, and energy storage technologies, such as advanced batteries and microgrids, ensure a stable power supply even when sunlight is not available. 

The Future of Solar Energy in the Military

The future of solar energy in the military sector is vibrant and full of potential. The Department of Defense (DoD) recognizes the strategic advantage of renewable energy sources, especially solar, and is investing in research and development, aiming for a resilient, sustainable, and secure energy future. 

One area of focus is the improvement of portable solar technologies. The military demands lightweight, compact, and efficient energy sources for soldiers on the move. Flexible solar panels that can be rolled up for transport and then deployed in remote locations are undergoing extensive research and development. These devices can power everything from communications equipment to portable shelters, reducing the need for traditional, heavy, fuel-based energy sources. 

The future will also likely see more solar installations on military bases. The DoD’s commitment to enhancing energy security and reducing greenhouse gas emissions has led to several large-scale solar projects on military lands, such as the 150-megawatt solar array at Fort Irwin in California. These projects not only reduce the military’s carbon footprint but also ensure a stable, self-sufficient energy supply even in the event of grid disruptions. 

Emerging technologies like energy storage and microgrids are also part of the future of solar energy in the military. Advanced batteries can store excess solar power for use when the sun isn’t shining, and microgrids – smaller, decentralized versions of the larger electrical grid – can operate independently in case of grid failures. These technologies increase the reliability and resilience of solar power, making it an even more attractive option for military use. 

The shift towards renewable energy is also expected to have a positive impact on military training and operations. Solar-powered facilities have lower operating costs, freeing up resources for mission-critical activities. Meanwhile, using solar power in the field reduces the reliance on fuel convoys, which are often targeted in combat zones. 


Solar energy holds significant promise for the military, offering a reliable, cost-effective, and sustainable solution to meet its energy needs. As solar technology continues to evolve and improve, its role in powering military operations is set to expand. Embracing solar energy not only contributes to global efforts to combat climate change but also enhances the military’s operational efficiency, energy security, and strategic capabilities. 

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