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Lake Mills Light & Water

Wisconsin Utility Interconnection & net metering rules
Net Metering Allowed1
NEM TypeMonthly
Line Taps Allowed0
Load Taps Allowed0

Net metering & export

Net Metering Allowed
1
NEM Type
Monthly
Post Solar Billing Method
Net Metering
Net Excess Generation Notes

The customer shall be billed monthly on a net energy basis and shall pay the fixed charge and energy charge specified in the rate schedule under which he is served. If, in any month, the customer’s bill has a credit balance of $25 or less, the amount shall be credited to subsequent bills until a debit balance is reestablished. If the credit balance is more than $25, the utility shall reimburse the customer by check upon request. Monthly credits shall be computed by taking the net excess kilowatt-hours produced times the sum of the applicable energy charge plus monthly power cost adjustment clause (PCAC).

A customer who is served under a regular rate schedule shall have any ratchet and/or other device removed from his meter to allow reverse power flow and measurement of net energy used. Customers eligible for net energy billing but with existing metering facilities equipped with ratchets or other devices preventing reverse registration (i.e. time-of-use metering facilities) may request that the utility install the necessary metering to permit such billing.

Rebates Offered
1

Interconnection & taps

Approval Req To Install
Yes
Interconnection Level
3
Line Taps Allowed
0
Load Taps Allowed
0
Automatic Transformer Upgrade Size
0
Meter Aggregation Allowed
0

System size & offset

System Size Restrictions
0
System Size Restriction Type
No Restrictions
System Size Battery Included
0
System Size Includes Existing Systems
0
Offset Type
No Restrictions
Offset Value
0
Offset Calculation Period
0
Industry Standard Watts Sqft
2

Metering & disconnect

Production Meter Required
No
Production Meter Position
N/A
Production Meter Labeling
N/A
Meter Spot Process

Any PV installation directly or indirectly connected to the utility distribution network has the potential to send power back on to the grid. The utility is required by the Wisconsin Public Service Commission to purchase any excess generation and so all connected distributed generation is required to be metered according to the WI PSC


There is not a separate PV production meter. A bi-directional meter will be installed by the utility.


Installing a bi-directional meter for grid-connected DG applications is a standard practice.

Allowed Meter Adapter
None

Plans & docs

Site Plan Reqs

• System capacity must be 0.5 kWDC or greater.

• System must be installed within 90 degrees of due south. (Azimuth)

• Must be installed with a panel tilt between 10-50 degrees.

• Must have less than 10 percent obstacle shading based on analysis of an industry-accepted tool.

SLD Reqs

No line-side taps in the homeowner's MSP

No load-side of the utility meter enclosure in the utility meter base

Install Reqs

An outside AC disconnect that is always accessible to the utility 24/7/365 is required as a safety precaution.

Website
link
Phone
(920) 648-4026

Other details

Restrict Inspection
0
Address ID
167818
Express Planset Eligible
Yes
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with Lake Mills Light & Water before you rely on this. The useful move: if an installer says you need a main panel upgrade, ask how these tap and interconnection policies were considered first.