HERA prints a 4.4% December rise for low-voltage white and blue, 24% for other firms, and 25% for yellow lighting - the euro rates sit on the gazette, the later column is 11% above the early column, and the notice says very few firms pay this
On 12 November 2026 HERA said a 9 November decision, printed in Narodne novine 130/2026 on 11 November, sets guaranteed-supply rates from 1 December. Against November, low-voltage white and blue rise 4.4%, other businesses 24%, and yellow public lighting 25%. The notice prints wholesale prices as about 24% and does not print euro rates. The gazette does, and it does not print those percentages. A white-model higher-tariff rate is 0.262961 euro a kilowatt-hour for the first two months and 0.291887 after that. Multiplying each early energy rate by 1.11 matches the later rate at six decimals, our arithmetic. The monthly fee stays 4.65 euro. Firms using up to 250,000 kWh in six months sit under a different price rule, so the notice says this decision applies to very few businesses. No solar and no battery are named.
A business in Croatia with no supply contract of its own pays a default tariff from HEP ELEKTRA. HERA reset that tariff for December. The notice and the gazette name no solar and no battery.
On 12 November 2026 HERA said its board, on 9 November, set the rates for guaranteed supply for December. The decision is Narodne novine 130/2026, printed on 11 November. It takes effect on 1 December 2026. Guaranteed supply is the tariff for a business that has no contract with a market supplier. HEP ELEKTRA is the only firm that supplies that tariff in Croatia.
Against the November rates, the notice prints a 4.4% rise for businesses on low voltage with the white model or the blue model. It prints a 24% rise for other businesses. It prints a 25% rise for the yellow model, which the notice calls public lighting. It calls the rises a direct result of wholesale electricity prices, printed as about 24%. The Croatian line is "cca 24%". The notice does not say which tariff models sit inside "other businesses". It does not print a euro-per-kilowatt-hour table. The gazette does. The gazette does not print 4.4%, 24% or 25%.
The notice says a separate regulation, also Narodne novine 101/2026, sets electricity prices for some categories of business that use up to 250,000 kWh in six months. That rule applies whether the firm is on guaranteed supply or a market contract. Because of it, the notice says this December decision applies to an extremely small number of businesses. A firm inside the 250,000 kWh line is not reading its own December rise here. The notice does not list the categories. It does not print one workplace bill. Doubling 250,000 gives 500,000 kWh across a year, our arithmetic. The notice does not print a yearly line.
The gazette prints two energy tables, in euro per kilowatt-hour, and a monthly fee. For the first two months, the white model is 0.262961 in the EN VT column and 0.176961 in the EN NT column. After two months those white figures are 0.291887 and 0.196427. The blue model, one rate in the EN JT column, is 0.219961 and then 0.244157. High voltage is 0.343706 and then 0.381514, in both the EN VT column and the EN NT column. Medium voltage is 0.356435 and then 0.395643. The low-voltage red model is 0.351343 and then 0.389991. Yellow is 0.348797 and then 0.387165. The monthly fee is 4.65 euro on every row of both tables. This decision does not define what hours VT, NT and JT cover.
Multiplying each early energy figure by 1.11 matches the later figure once it is rounded to the six decimals the gazette prints. That is our arithmetic, on every energy cell in the two tables. The notice does not print 11%. The gazette does not print 11%. The 11% is the step from the first two months to the later months. It is a different comparison from the 4.4% and the 24%, which are the notice's comparison with November.
The notice says guaranteed-supply rates are in principle higher than the prices market suppliers offer, so customers pick a supplier. It tells firms on this tariff to sign with a market supplier if they can. It does not print those market prices. It does not print a solar kilowatt, a battery kilowatt-hour, or a cent a roof would change.
Analogy: this page is the price of power from the street when a firm has not signed its own supplier. A workplace battery is a tank on the premises. Neither page prices the tank. The 24% is a comparison for firms outside a consumption cap. It is not a line for a small firm's December bill.
Good: A 12 November notice with 4.4%, 24% and 25% kept as comparisons with November, euro rates kept on the 11 November gazette, a 4.65 euro monthly fee kept on both tables, and an 11% step marked as our arithmetic.
Bad: No list of who "other businesses" are. No hours for VT, NT and JT. No market-supplier prices. No workplace bill. No solar kilowatts. No battery. The 250,000 kWh line is six months, and the notice does not print a year.
Ugly: Pasting 24% onto a firm inside the 250,000 kWh rule. Calling 11% the rise from November. Treating 4.65 euro as the energy rate. Inventing a solar saving. Calling this tariff a battery price.
Soft next step: write 4.4%, 24% and 25% as the notice's comparison with November, keep the euro rates on the gazette, and leave solar and the battery off this note.
Source: HERA, 12 Nov 2026, December guaranteed-supply rates. Primary for the 12 November date, the 9 November board session, the 1 December start, the 4.4% rise for low-voltage white and blue, the 24% rise for other businesses, the 25% rise for the yellow public-lighting model, wholesale prices printed as about 24%, application only where a business has no market-supply contract and HEP ELEKTRA supplies it, the Narodne novine 101/2026 price rule for some categories using up to 250,000 kWh in six months, and the line that the decision applies to an extremely small number of businesses. The notice does not print euro-per-kilowatt-hour rates. Narodne novine 130/2026, 11 Nov 2026, the decision. Primary for the printed date 11 November 2026, the two energy tables, 0.262961 and 0.176961 then 0.291887 and 0.196427 on the white model, 0.219961 then 0.244157 on blue, 0.343706 then 0.381514 on high voltage, 0.356435 then 0.395643 on medium voltage, 0.351343 then 0.389991 on low-voltage red, 0.348797 then 0.387165 on yellow, and 4.65 euro a month on every row. The gazette does not print 4.4%, 24%, 25% or 11%. Multiplying each early energy figure by 1.11 matches the later figure at six decimals, our arithmetic. The notice names no solar and no battery.