Blog

• Legislation · 17 September 2026 · 6 min read

  Failing to carry out an energy audit: what follows?

  The Finnish Energy Authority supervises the audit obligation and can order a company to meet it under threat of a conditional fine. What the law says and how to fix the situation.

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• Savings measures · 9 September 2026 · 6 min read

  Battery storage in a greenhouse: peaks or reserves?

  Battery storage in a greenhouse earns from three sources: a lower demand charge, the reserve markets and own power shifted to lighting hours.

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• Savings measures · 25 August 2026 · 6 min read

  Demand response and reserve markets

  On Fingrid's reserve markets a company is paid for keeping its loads or battery storage on standby. What FCR, aFRR and mFRR mean and who flexibility suits.

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• Savings measures · 25 June 2026 · 5 min read

  The demand charge nobody optimises

  The demand charge is set by the month's highest 15-minute power, not by consumption. How to find peaks in the data and shave them without investment.

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• Energy certificate · 22 May 2026 · 6 min read

  Office building E-value: what sets the class?

  The office building E-value is a calculated figure. The class limits from A to G, a worked example from 142 to 118 and what actually moves the number.

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• Energy management · 27 April 2026 · 6 min read

  ISO 50001 or ETJ+: which suits your company?

  A company consuming over 23,600 MWh a year must have a certified energy management system by 11 October 2027. How ISO 50001 and ETJ+ differ.

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• Energy audit · 9 April 2026 · 6 min read

  Energy audit obligation for transport companies

  Seven trucks' diesel converted into megawatt-hours, the three-year average and the comparison with the 2,700 MWh threshold, worked through step by step.

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