Distributed Energy Solutions for Homes & Businesses
Take distributed solar as an example. With battery storage, users can store excess energy during the day and use it at night or during peak demand hours.
Simultaneously, total costs increase steadily as the DER percentage increases, reflecting the increasing investments required for widespread solar PV and battery storage system deployment.
The timeline of the battery capacity in Fig. 4 depicts the power supply and outage times and durations, starting from the onset of the power outage. Initially, the system starts with a total battery capacity of 40 kWh that decreases rapidly as power is consumed until partially recharged once the solar generation is available.
With an average of six peak sunlight hours per day, the initial energy supply of the system, just before an outage and with a fully charged battery, would provide about 24 h of backup power. The daily solar energy generation can be estimated by (20 % × 15 kW × 6 h ≈ 18 kWh/day).
Solar DER can be built at different scales—even one small solar panel can provide energy. In fact, about one-third of solar energy in the United States is produced by small-scale solar, such as rooftop installations.
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