Williams Dairy Farm Power Purchase Agreement

Tags :Agriculture

Client: Williams Dairy Farm

Solar Bay's Power Purchase Agreement has helped decrease Williams Farm's electricity bill with a 25kW system installed for no capex

Williams Farm Dairy Solar Overview

Solar as a Service has helped decrease Williams Farm electricity bill.

No up front out of pocket capex expenditure.

3-Phase connection trench installed on shed.

Overcame rural challenges for infrastructure projects.

The Challenge

An increase in the cost of electricity created an urgent need to research alternative solutions. Onsite energy generation provided by Solar Bay’s Solar as a Service plan proved to be the best way to minimise impact and costs.

The Equipment

Fronius 20kW Inverter


Trina 275 Watt Panels

Production - Daily

The Process

Site Visit

During the initial site visit Solar Bay collects information on the existing electricity contracts, roof weight bearing and generation capacity, buildings electricity consumption profile, and most importantly the client goals.


Energy interval data and network tariff analysis showed a 60kW system would reduce total grid energy consumption to a new threshold allowing for a network tariff change, while only resulting in minimal export.

Grid Connection Application

Grid connection was a straight forward process, grid protection was required, as expected.

Structural Engineering Certificate

Due to internal cranes at the site the load bearing capacity of the roof was not a limiting factor of the install.

System Design

Two Fronius 27kW inverters each with five strings were designed to maximise performance, at minimal cost.


Safety was taken into consideration from the first site visit. All measures were put in place for OHS, working at heights and electrical safety.


After identifying the location for the inverters and cabling, the team worked for 10 days to install the system.


A detailed handover and instruction manual was provided to Radcoflex to ensure all of their questions could be answered.

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  • Download our free guide to
    power purchase agreements 7 things you must know when dealing with PPA

  • Download our free guide to
    power purchase agreements 7 things you must know when dealing with PPA