South Portland ESS
South Portland ESS has 1 planned power project totaling 10 MW in the FieldProspects database and no operating project on record. 0% of the planned capacity has an interconnection agreement and 0% is past its listed in-service date. The projects sit in 1 state and 1 technology.
Where South Portland ESS's planned pipeline sits
Planned MW by state. Everything sits in Maine.
Largest states
- Maine10 MW1 project, 100% of planned
and no operating project on record yet. Everything here is pipeline.
View as table
| Technology | Planned projects | Planned MW | Operating projects | Operating MW |
|---|---|---|---|---|
| Battery Storage | 1 | 10 MW | 0 | 0 MW |
MW by technologyBattery Storage has no operating projects
How much of the pipeline is real
An interconnection agreement and a construction start are the two strongest signals that a queue project will be built. A listed date that has already passed is the strongest sign it will not be built on time.
Share of South Portland ESS's planned MWSee the queue slip report
Planned MW by listed in-service year
Projects listed before 2026 and still planned are past due.
View as table
| Year | Projects | MW |
|---|---|---|
| 2026 | 0 | 0 MW |
| 2027 | 1 | 10 MW |
Pipeline by grid and queue year
South Portland ESS's planned MW sits entirely in ISO New England.
Planned MW by grid operator
1 planned project
View as table
| Grid | Planned projects | Planned MW |
|---|---|---|
| ISO New England | 1 | 10 MW |
Changes since the June 4, 2026 snapshot
What moved in South Portland ESS's queue position between June 4, 2026 and October 8, 2026.
Which projects were added, finished, cancelled or shelved
| Change | Project | Technology | State | MW | Grid |
|---|---|---|---|---|---|
Members see each changed project with its name, location and dates, and get an email when South Portland ESS's pipeline moves.
South Portland ESS against the nine largest developers
The nine largest planned pipelines in the database, ranked by planned MW. NextEra Energy leads with 36.8 GW planned. South Portland ESS ranks 753 of 815 developers with a planned project.
| # | Developer | Planned projects | Planned MW | Operating projects | Operating MW | Operating per planned |
|---|---|---|---|---|---|---|
| 1 | NextEra Energy | 191 | 75 | 0.32 | ||
| 2 | Invenergy | 135 | 28 | 0.17 | ||
| 3 | Intersect Power | 54 | 5 | 0.05 | ||
| 4 | Hecate Energy | 41 | 8 | 0.06 | ||
| 5 | Engie | 80 | 51 | 0.24 | ||
| 6 | RWE | 78 | 20 | 0.25 | ||
| 7 | Avantus | 49 | 10 | 0.14 | ||
| 8 | EDF Renewables | 54 | 15 | 0.12 | ||
| 9 | OCI Energy | 45 | 1 | 0.01 | ||
| 753 | South Portland ESS this page | 1 | 0 | 0.00 |
Operating per planned is operating MW divided by planned MW. A low ratio means a pipeline far larger than the fleet already built.
Top 9 by planned MW, plus South Portland ESSEvery South Portland ESS project
The one project with name, county, grid, MW, queue date, in-service date, interconnection status and construction status. Filter, sort and export to Excel.
| Project | County | Grid | MW | Queue date | In service | Agreement |
|---|---|---|---|---|---|---|
Project names never appear next to their developer on public pages. Members see both.
Get alerts for South Portland ESS
We email you when South Portland ESS adds a project, signs an interconnection agreement, starts construction, slips a date or drops a project. One email per snapshot, only when something changed.
See every South Portland ESS project, with its county, dates and queue status.
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