Abstract
Electrification of industrial processes introduces both new flexibility opportunities
and increased strain on electricity grids. This paper investigates the combined process
flexibility of an electric boiler with a steam accumulator and a cold storage system at a large
Norwegian chicken slaughter and processing facility. Using a cost-optimization model applied
to one month of real operational data, we evaluate three value streams. Results show that
coordinated flexibility reduces the peak monthly electricity import by 31%, primarily enabled by
the steam accumulator. Grid tariff account for the majority of total cost reductions of 17–21%
depending on the value streams included. Spot price arbitrage contributes marginally, while
reserve market participation provides additional revenue. Findings demonstrate that electrified
industrial facilities with thermal flexibility and significant daily load variations can achieve
substantial cost reductions through multi-market optimization, with grid tariff management
emerging as the primary economic driver.