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What is Stand-Alone Battery Storage?

Stand‑alone battery energy storage systems (BESS) are large, grid‑connected batteries that store electricity and deliver it back to the grid when it’s needed most.

Think of them as big, quiet, rechargeable power banks for the electric grid. They’re usually made up of container‑style battery units on a secure, fenced site, with no staff on site day‑to‑day and no smokestacks, noise, or traffic.

How Stand‑Alone BESS Works

When the grid needs support, batteries respond in milliseconds, discharging power to keep the system stable.

Charge:

When there is extra, low‑cost electricity on the grid (sometimes from solar or wind), the batteries charge.

Store:

Energy is held in the batteries until demand rises or renewable output falls.

Discharge:

When the grid needs support, batteries respond in milliseconds, discharging power to keep the system stable.

Key Benefits of Battery Storage Facilities

Grid Reliability

Large BESS projects act like instant backup for the grid. If a power plant trips offline or demand suddenly spikes, batteries can step in within seconds to keep lights on and avoid outages.

Integration of Renewables

Batteries are the bridge between variable renewables and a reliable grid. They store solar and wind energy when it’s plentiful and shift it to evenings or peak hours, reducing the need for fossil‑fuel “peaker” plants.

Economic Efficiency

By charging when power is cheap and discharging when it’s expensive, batteries help lower overall system costs. They can also defer expensive grid upgrades by providing local support at congested points on the network.

Local Resilience

More storage on the regional grid means a stronger safety net for your community during heat waves, storms, and other extreme events. In some designs, batteries can be configured to support critical facilities (like shelters or emergency services) during extended outages.

Contact us today to schedule a no-obligation site evaluation and see how much your property could earn.

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14 Iron Hill Rd.

East Weymouth, MA, 02189

© 2025 by Solway Development, LLC.

14 Iron Hill Rd.

East Weymouth, MA, 02189

© 2025 by Solway Development, LLC.

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