8.b Other income - €2,961 million

Grants for environmental certificates amounted to €475 million, a decrease of €189 million from the previous year due essentially to a reduction in grants on energy efficiency certificates obtained on distribution in Italy.

Sundry reimbursements increased by €168 million, attributable mainly to Enel Generación Chile for the indemnity received from the customer Anglo American for early withdrawal from a long-term electricity supply agreement totaling €160 million, of which €80 million related to Thermal Generation and Trading Business Line and €80 million related to the Enel Green Power Business Line.

Gains on the disposal of entities came to €325 million in 2019, an increase of €38 million, and mainly include:

• the gain on the sale of Mercure Srl, a special-purpose vehicle to which Enel Produzione had previously transferred the Valle del Mercure biomass plant (€108 million);
• the negative goodwill (of €181 million) resulting from the definitive allocation of the purchase price of (i) a number of companies sold by Enel Green Power North America Renewable Energy Partners LLC (€106 million) and (ii) Tradewind, which transitioned from being an associated company to a wholly-owned subsidiary (negative goodwill of €75 million);
• the gains of €42 million on the disposals of Gratiot and Outlaw, two renewable energy projects developed by Tradewind. 

In 2018, this item mainly included: 

• the gain on the sale, with loss of control, of eight project companies in Mexico at the end of September 2018 and the associated re-measurement at fair value of the 20% stake retained by the Group in the companies sold (€190 million); 
• the gain on the sale of EF Solare Italia (€65 million); 
• the gain on the sale of a number of companies within the Enel Green Power Business Line in Uruguay (€18 million). 

The aggregate “Other income” increased by €398 million in 2019, essentially attributable to:

• an increase in revenue in Argentina following the Edesur agreement with the local authorities resolving reciprocal pending issues arising during the 2006-2016 period (€233 million); 
• the adjustment to the amount paid for the acquisition of eMotorWerks in 2017 in application of certain contract clauses (€98 million); 
• the €50 million payment under the agreement that e-distribuzione reached with F2i and 2i Rete Gas for the early, lump-sum settlement of the second indemnity connected with the sale, in 2009, of e-distribuzione’s share held in Enel Rete Gas. 

In 2018, this aggregate mainly included the €128 million indemnity related to the e-distribuzione agreement for the sale of Enel Rete Gas in 2009.

The following table shows a breakdown of total revenue from sales and services by business area based on the approach used by management to monitor the Group’s performance during the two years being compared.

(1)The 2018 figures have been adjusted to take account of the interpretations of the International Financial Reporting Interpretations Committee (IFRIC) contained in the Agenda Decision of March 2019, which involved changes in the classification, with no impact on margins, of the effects of purchase and sales contracts for commodities measured at fair value through profit or loss (for more details, see note 4.3 of the consolidated financial statements).