An energy community is a group of people, small businesses, or local authorities who collectively produce, share, store, or sell energy, typically from renewable sources like solar panels or wind turbines. Unlike traditional utilities where a large company generates power and sells it to passive customers, energy communities put local participants in control of their own energy supply. The concept has gained significant traction in Europe, where it has a formal legal framework, and is taking shape in the United States through community solar programs and similar models.
How Energy Communities Work
At its core, an energy community pools resources. Members might co-invest in a shared solar array on a rooftop or a nearby field, a small wind installation, or battery storage. The energy generated is then distributed among members, fed back into the grid, or sold. Members can play different roles: some are pure consumers, others are producers, and many are “prosumers” who both generate and use energy.
The sharing of energy between members can happen physically through the local grid or virtually through billing arrangements. In peer-to-peer energy sharing, for example, a household with excess solar power during the afternoon can effectively sell that surplus to a neighbor whose panels are shaded. Several pricing mechanisms exist for this, including models that split the difference between retail and wholesale electricity prices or that divide the total energy bill proportionally among participants. These systems help balance local supply and demand, reducing reliance on distant power plants and long-distance transmission.
The EU’s Legal Framework
The European Union has created the most developed legal structure for energy communities through two directives, each defining a slightly different model. Renewable Energy Communities focus on renewable sources and require members to be located near the energy installations. Citizen Energy Communities are broader and can involve any type of electricity activity, without a strict geographic requirement.
Both types share a key principle: their primary purpose cannot be financial profit. Instead, they must aim to deliver environmental, economic, or social benefits to their members or the local area. Profits are allowed but generally must be reinvested into the community’s mission.
The rules are deliberately designed to prevent large corporations from co-opting the model. Renewable Energy Communities exclude energy companies, large enterprises, and non-local government authorities from membership entirely. Citizen Energy Communities are more open about who can join, but still reserve “effective control” for ordinary people, local authorities, and small businesses. In practice, this means these groups must hold the majority of voting power, even if a larger company participates financially. Medium-sized enterprises can also exercise effective control in Renewable Energy Communities, but the intent is the same: keep decision-making local and democratic.
Membership must also be open and voluntary. No one should be excluded on arbitrary or discriminatory grounds, and the EU specifically requires that low-income and vulnerable households be able to participate. Financial barriers can’t be set unreasonably high. An analysis of 570 German energy cooperatives found the median minimum investment was 500 euros, with most asking for 1,000 euros or less.
Energy Communities in the United States
The U.S. doesn’t use the term “energy community” in quite the same legal sense as the EU. Instead, community-driven energy takes shape primarily through community solar programs, where people subscribe to a share of a solar project and receive credits on their electricity bills. The specifics vary widely by state.
California offers several models. Its Green Tariff program lets residential and commercial customers subscribe to a pool of community solar projects and pay the difference between their current generation charge and the cost of sourcing 50 to 100 percent renewable power, with a statewide capacity cap of 562 megawatts. For residents in disadvantaged communities who can’t install their own rooftop panels, a separate program provides a 20 percent bill discount through local solar projects. A newer Community Renewable Energy Program, launched in 2024, is specifically designed to avoid shifting costs onto non-participating customers.
Community choice aggregation is another U.S. approach. Local governments form agencies that purchase electricity on behalf of residents, negotiating cleaner or cheaper power while the existing utility still handles delivery. San Diego Community Power, for instance, offers its default customers a 4 percent rate discount compared to the traditional utility, with a more affordable tier providing a 10 percent discount.
Setting One Up
Establishing an energy community follows a general roadmap of four phases. It begins with a feasibility study that analyzes the energy consumption of potential members and assesses local renewable resources, grid capacity, and financial viability. Next comes member aggregation, where participants are recruited and classified as producers, consumers, or prosumers, a legal entity is formed (often a cooperative or nonprofit), and funding sources are identified, whether through member contributions, grants, or loans. The third phase is operational: building the infrastructure, installing panels or turbines, and getting the project validated by relevant authorities. Finally, the community enters ongoing technical and economic management, which involves monitoring performance, distributing energy or credits, and handling finances.
The biggest hurdle is typically access to financing. Community-scale renewable projects are small compared to commercial developments, which makes them less attractive to traditional lenders. Competitive pricing of renewable energy relative to grid power is another persistent challenge, particularly in regions with cheap fossil fuel electricity. Navigating local permitting and grid interconnection rules adds complexity, especially in countries or states where regulations haven’t caught up with the community energy concept.
Financial Benefits for Members
Bill savings vary significantly based on location, program design, and energy prices. In the U.S., community solar subscribers typically see modest but consistent discounts. California’s programs range from a 4 percent discount for default community choice customers to 20 percent for low-income residents in disadvantaged communities enrolled in targeted solar programs. European energy communities, where members co-own the generation assets, can see larger savings over time because they benefit directly from avoided retail electricity costs and potentially from selling surplus power.
The financial picture extends beyond monthly bills. Members who invest in a cooperative or shared installation may receive dividends or see their initial investment grow as the project generates revenue over its 20 to 30 year lifespan. And because renewable energy costs are largely fixed after installation, members gain a degree of protection against rising fossil fuel prices.
Social and Environmental Impact
Energy communities deliver benefits that individual rooftop solar or standard utility service typically don’t. They make renewable energy accessible to renters, apartment dwellers, and people whose roofs aren’t suitable for panels. By explicitly including low-income households, well-designed programs help address energy poverty rather than reserving clean energy benefits for wealthier homeowners.
The broader renewable energy transition these communities contribute to also carries measurable social effects. Solar panel manufacturing and deployment have the highest positive social impact among green energy technologies, contributing to global employment and female workforce participation. The renewable energy sector overall is projected to increase labor income by 1.6 times by 2030 compared to earlier levels. At the local level, energy communities keep money circulating within the community rather than flowing to distant utility shareholders, and the cooperative governance model builds social cohesion by giving neighbors a shared project and a reason to collaborate.
Environmentally, the impact is straightforward: every kilowatt-hour generated from a community solar array or wind turbine displaces power that would otherwise come from fossil fuels. When combined with battery storage and smart energy management, communities can further reduce waste by matching local generation with local consumption in real time.