Hässelby SK Innebandy was one of 136 clubs from Sweden that had teams playing during Mälarenergi Cup 2019. They participated with two teams in Pojkar 12 Grön (rek 06-07). The team in Pojkar 12 Grön (rek 06-07) made it to the the 1/4 Final in Slutspel A, but lost it against Strömsbro IF P07 by 0-5.

In addition to this, Hässelby SK Innebandy have participated in Mälarenergi Cup before. During Mälarenergi Cup 2018, Hässelby SK Innebandy had two teams playing in Pojkar 12 Lätt (rek 06-05). Two teams played until 1/4 Final in Slutspel A; Pojkar 12 Lätt (rek 06-05) Hässelby P06 Röd lost against ISSaga-p07 by 2-3 and Pojkar 12 Lätt (rek 06-05) Hässelby P06 Svart lost against Bele Barkaby IF IBF by 0-1.

Hässelby SK Innebandy comes from Hässelby which lies approximately 77 km from Västerås, where Mälarenergi Cup takes place. The area around Hässelby does also provide 43 additional clubs participating during Mälarenergi Cup 2019 (Among others: Sigtuna IF IBK, IK Tomtberga, Vendelsö IK, Åkersberga IBF F08, Jakobsbergs IBF, Vallentuna IBK, Råsunda IS, Nykvarns IF, Älvsjö AIK and Järfälla Spiders).