1.1 MW BESS operating in Marion, IA — Midcontinent Independent Transmission System Operator, Inc..
1.1 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2018
Operating Since
Coordinates
34.0410, -85.2232
County
Marion, IA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | MidAmerican Energy Co | MidAmerican Energy | — |
| Owner(s) | MidAmerican Energy Co | Berkshire Hathaway | — |
| Status | Operating | — | — |
The Knoxville Battery Energy Storage system is a 1.1 MW battery energy storage system located in Marion County, Iowa. The plant began operating in 2018 and is owned by Berkshire Hathaway and operated by MidAmerican Energy Co. It is the fourth-largest battery storage facility in Iowa, and ranks 1186th nationally.
The facility consists of a single generator utilizing battery technology, with a total storage capacity of 4 MWh. The battery chemistry is lithium-ion (LIB), and the duration is 3.64 hours. The plant operates within the Midcontinent Independent Transmission System Operator (MISO) market and balancing authority, within the Midwest Reliability Organization (MRO) NERC region.
Generated from EIA, GEM, and public data sources
NERC Region
MRO
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc..
Grid Voltage
13.2 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
−2 MWh
Net Charging
-25 MWh
Annual Net Energy
-0.3%
Capacity Factor
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
No financial data available for this plant.
Market Position
ISO/RTO Market
MISO
LMP Node
—
Pricing Hub
MINN.HUB
Node Source
Shared substation inference