Sinnissippi Solar Energy

A 100 MW utility solar project in Jefferson County, Wisconsin. Sinnissippi Solar Energy has asked to connect to the grid or filed for its first approvals; nothing on record yet commits money to it. Public records name Invenergy Services LLC as its developer. No public record read so far names its builder.

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The record

What the public record says about Sinnissippi Solar Energy, as of 22 Oct 2026.

Stage	Queued
Construction start	Q3 2027 estimate
Size	100 MW
Location	Jefferson County, Wisconsin (to about 10 km)
Developer	Invenergy Services LLC
Grid operator	—
Builder (EPC)	Not named yet
Trade subcontractors	in the app
People to call	in the app
Phase windows	in the app

Every fact in the app links to the public record behind it, with how many records agree and whether it is confirmed, reported or an estimate. What the terms mean.

What happened

Each change dated by the scene or the document, newest first.

1 Jan 2026Entered the public record for the first time.

Who was named on it, and when, is in the app.

Also developed by Invenergy Services LLC

Project	Stage	Size
High Noon Solar EnergyUtility solar · Columbia County, Wisconsin	Under construction	300 MW
Koshkonong Solar Energy CenterUtility solar · Dane County, Wisconsin	Under construction	300 MW
Yellow Wood Solar Energy CenterUtility solar · Clinton County, Ohio	Under construction	300 MW
Hashknife Energy CenterUtility solar · Navajo County, Arizona	Under construction	275 MW
Tip Top Solar Energy CenterUtility solar · Lea County, New Mexico	Under construction	220 MW
Hashknife Energy Center IIUtility solar · Navajo County, Arizona	Under construction	200 MW

Every Invenergy Services LLC project

Also in Jefferson County

Project	Stage	Size
Badger State SolarUtility solar	Under construction	149 MW
Unnamed 149 MW solar projectUtility solar	Under construction	149 MW
Unnamed 75 MW solar projectUtility solar	Under construction	75 MW
Unnamed 109 MW solar projectUtility solar	Queued	109 MW
Unnamed 71 MW solar projectUtility solar	Queued	71 MW
Crawfish RiverUtility solar	Operating	75 MW

Every project in Jefferson County

Utility solar in Wisconsin Every industry in Wisconsin How to tell a project is about to break ground

Questions

Sinnissippi Solar Energy, in short.

Where is Sinnissippi Solar Energy?

Sinnissippi Solar Energy is a 100 MW utility solar project in Jefferson County, Wisconsin. The public page places it to within about ten kilometres; the precise location is in the subscriber record.

When does construction start on Sinnissippi Solar Energy?

Groundtrace estimates construction starts in the third quarter of 2027. This is an estimate from the project's filings, not a date any record states; the exact date and the record behind it are in the subscriber record.

Who is developing Sinnissippi Solar Energy?

Invenergy Services LLC, as the public record names it.

Who is building Sinnissippi Solar Energy?

No public record read so far names a builder for Sinnissippi Solar Energy. Groundtrace leaves the field empty rather than guess, and fills it when a permit, a filing or the builder's own page names one.