For**to calculate**the amount of**incentive**delivered with the**thermal account**GSE we can refer to simple mathematical equations.

The amount paid by the**incentive**of the**thermal account**it depends on the power of the new appliance, its efficiency, the quantity of emissions released into the atmosphere and the climatic zone in which it is installed. The mathematical formula for**calculate the thermal account**relates all these data.

**Thermal account, formula for calculating the incentive for stoves and fireplaces**

*Thermal account incentive = 3.35 x ln (Pn) x hr x Ci x Ce*

Don't be scared! They are all constants to be replaced with known numbers.

**Pn** corresponds to the rated power of the**stove**or of**fireplace stove**that you have purchased.

Hr corresponds to your climate zone

There is the value of the incentive expressed in € / kWh

Ce is the reward coefficient referred to**emissions**of primary particulate matter. It is precisely the*There is*(reward coefficient) to increase the value of**incentive**of the**thermal account**by 20 or 50%.

*Ci = 0.040 € / kW*

The value Ci for**calculate the thermal account incentive**for the purchase of**wood stoves,**fireplaces or**pellet stoves**with nominal heat output less than or equal to 35 kW is 0.040 € / kW.

*Ce for pellet stoves and pellet fireplaces*

The Ce value for the**calculation of the thermal account**for the purchase of**pellet stoves**and fireplaces varies according to the level of emissions. Check the emissions of the device you intend to purchase and if these are:

- 20

- 15

- Emissions ≤ 15 -> the Ce is equivalent to 1.5

These values are indicated in the Ministerial Decree 14/01/16.

*Ce for wood-burning stoves and wood-burning thermo-fireplaces*

For the**wood-burning stoves and fireplaces**the estimate of*There is*refers to these values:

- emissions between 60 and 80, the *There is* equals 1

- emissions between 40 and 60, the *There is* equals 1.2

- emissions below 40, the *There is* is equivalent to 1.5

*Hr and climatic zone*

If you do not know which climate zone your city belongs to, at the end of the article there is a table showing the schematic representation of the various Italian climate zones, city by city. Based on the city, the Hr value equals:

- Climate zone A = 600

-Climate zone B = 850

- Climate zone C = 1100

- Climate zone D = 1400

-Climate zone E = 1700

-Climate zone F = 1800

Practical example of calculating the incentive of the thermal account

*Thermal account incentive = 3.35 x ln (Pn) x hr x Ci x Ce*

All variables are replaced by taking as an example the purchase of one**pellet stove**from 12 KW and emissions below 20 mg (Ce = 1.2), in the municipality of Bergamo (the table below shows that Bergamo belongs to the climatic zone E, corresponding to the value 1700). It is calculated:

- 3.35 x ln (12) x 1700 x 0.04 x 1.5 = € 849 x 2 years = € 1,698 incentive

The logarithm of 12 is 2.48; "*ln "*is the classic logarithm, just press this button on the calculator at the time of**calculation of the thermal account incentive**.

To know**how to access the thermal account**and which**stoves**, **boilers**or**fireplaces**can be incentivized, we refer you to the article*Thermal account***, the legislation.**