MSc presentation by Alex Bringsarve

Teknoekonomisk analys av batterilager för peak shaving inom industrin – En fallstudie hos Holtab 

As intermittent power generation increases and grid owners raise power-based tariffs, manufacturing industries face rising electricity costs. This master’s thesis investigates the techno-economic feasibility of investing in a Battery Energy Storage System (BESS) for peak shaving at Holtab’s manufacturing facility in Tingsryd, Sweden.

The study developed a simulation model in MATLAB that represents the facility’s load profile, solar power generation, and a hypothetical BESS. To study how the control algorithm of the battery affects profitability, two control algorithms were implemented: one basic threshold-based strategy and an optimized control algorithm with perfect foresight. Additionally, an environmental analysis was conducted to weigh the carbon footprint of manufacturing the BESS against the emission savings from increased solar self-consumption.

The results indicate that a BESS capacity of 200-250 kWh satisfies Holtab’s technical requirements while achieving acceptable profitability under a market-based discount rate, if the optimized control algorithm is used. The sensitivity analysis highlights that the initial investment cost (CAPEX) is the most important parameter affecting profitability, which underscores the need for real supplier quotes. Environmentally, the BESS significantly increases the self-consumption of excess solar energy, which in turn reduces local emissions, though systematic grid benefits remain complex to fully quantify.

Ultimately, this thesis provides a robust investment decision basis for Holtab and offers valuable insights for similar manufacturing industries in Sweden that are considering investing in a BESS. 

Supervisor: Max Collins

Examiner: Mats Alaküla