Hedelin Home Battery September 2026 (LinkedIn)

A LinkedIn post by Gustav Hedelin reporting what the control of one household’s home battery earned in September 2026. It is a self-reported practitioner post, not an audited or primary source: one household, one month, averages given as “cirka”, and no battery size, bidding zone or control system stated. The exact date of the post is not shown.

Figures in the post

• The battery charged 789 kWh at an average spot price of about 0.93 SEK/kWh and delivered 758.5 kWh back at about 1.36 SEK/kWh.
• With the energy loss counted, he puts the extra value from timing alone at about 300 SEK for the month.
• He lists other values without quantifying them: avoided grid purchases, lower power peaks, higher solar self-consumption, selling at higher prices, and “stödtjänster eller andra ersättningar” (ancillary services or other compensation).

Checks on the figures

• Charging cost 789 × 0.93 = 733.77 SEK; discharge value 758.5 × 1.36 = 1,031.56 SEK; difference 297.79 SEK, which matches his 300 SEK.
• The realised spread is 0.43 SEK/kWh (1.36 − 0.93).
• The implied round-trip efficiency is 758.5 / 789 = 96.1 %. That is high for an AC round trip; the figures may be measured at the battery or DC side. The post does not say.
• The prices are spot prices only. Grid fee, energy tax and VAT are excluded, so the household’s own value could be higher (avoided imports) or lower (export compensation).
• The post contains no ancillary-service revenue figure.

Relevance

• A rare public figure for what pure spot timing is worth at household scale: about 300 SEK in a month. It is used on The Swedish BESS Business Case — Revenue Stacking and the FCR Saturation Problem as a labelled single data point next to the FCR-driven business case, and on Energy Storage under arbitrage.
• It does not say how much of a home battery’s value comes from arbitrage versus stödtjänster; that split is not in the post.

Limits of this summary

The raw copy is the maintainer’s staging note holding the quoted Swedish passages and the arithmetic check, not a clipping of the post page. Everything above comes from those quotes.