Can a small wind turbine cover the electricity used during milking?

The short answer

Wind may offset part of a dairy’s energy use, but the milking operation has a specific power and service window. Match generation to that window and retain the supply needed when wind is low. Include cooling, cleaning, pumps and other coincident loads rather than counting only one machine. Daily or annual energy equivalence cannot demonstrate that a turbine will operate the whole milking process at the required time.

Separate the overlapping loads

Build an operating sequence for the farm instead of adding all nameplate ratings as though every machine runs continuously. Identify which loads overlap with milking and which occur afterward, including refrigeration and cleaning. The process team should define which operations can move and which must happen on time. Preserve the complete electrical demand and service requirements of the milking equipment when comparing generation options.

Calculate energy without losing the peak

In a hypothetical farm, a 7 kW combined load runs for two hours in the morning and two in the evening. That duty uses 28 kWh/day. Add 4 kWh of other measured use for a total of 32 kWh/day. A wind estimate of 32 kWh/day as an annual average would still leave unanswered whether 7 kW is available during either milking window or whether starts and other simultaneous loads can be supported.

Look for the useful contribution

Use interval data to identify generation consumed immediately, generation usable by other farm loads, and surplus that may need an allowed destination. A larger turbine can increase surplus outside milking times without solving a calm-period supply gap. Evaluate approved scheduling opportunities separately from essential operation. Any electrical storage or backup arrangement must be sized and integrated for its stated role.

Make the procurement comparison complete

Compare wind, solar, existing grid supply and any hybrid option against the same farm operation. Include the equipment needed for continuity, installation and maintenance access. Ask for the wind package’s output boundary and control responsibilities. MARSTON can discuss turbine and component supply, but a wind rating alone does not establish that the existing dairy electrical equipment can be supplied by a proposed package.