Grid emulation could help save renewable projects

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Turbines tested with temporary mini-grid

The challenge
Commission 122 turbines with no grid power
A wind farm in the USA wanted 122 turbines constructed and fully operational within four months to qualify for a tax credit – a very tight timeframe. And it was made even trickier by the fact that grid power wasn’t scheduled for switch-on until later in the year.
To get these turbines commissioned in time for the tax credit, the wind farm needed a reliable source of backfeed power, and fast, so they called us in to help.

The solution
Shared expertise and a 3 MW mini grid
The temporary substation we designed was a team effort. We worked with load bank experts ComRent, the developer, the turbine manufacturer and the electrical engineer of record to hatch a plan that would meet the site’s commissioning needs. That is, 400 kW and six hours of run time per turbine. All 122 of them.
We quickly installed a 3 MW temporary mini-grid complete with generators, load banks, circuit breakers, transformers, fuel tanks and more than 6,000 feet of electrical cable. And we had a specialist on-site throughout the entire commissioning process, for monitoring and maintenance. 

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