Data centre, northern Taiwan, 5,000 kW
Problem
establish whether behind the meter storage could be justified at a data centre site with a 5,000 kW Taipower contract.
Work
- rebuilt a corrected 8,760 hour load profile at a load factor of 0.89, ran a full dispatch simulation under high voltage three tier time of use, and modelled land to megawatt density scenarios and the effect of the free supplementary off peak contract allowance.
near zerointernal rate of return
Pure time of use arbitrage returned a near zero internal rate of return at roughly 350 US dollars per kilowatt hour installed, without subsidy. Additional off peak contract capacity widened the charging window without improving the return.
Consequence
the client stopped optimising charging headroom, which was not the binding constraint, and reframed the project around resilience value and a possible subsidy trigger.