2020 Sustainability Report| Global challenge | 61 Aqualia and the climate change17 Aqualia is responding to the climate challenge with energy management based on optimisation, which is demons- trated in the following action guidelines: 1 Use of renewable energy 3 Reduction in electricity • Signing PPA projects for the consumption in WWTPs Reduction of acquisition of renewable energy with • Replacement of existing equipment emissions from a Green Certificate. with more energy-efficient energy consumption • I nstallation of photovoltaic solar equipment. energy panels. • Development of wastewater • I nstallation of micro turbines in the treatment technologies with low distribution systems. energy consumption. • Electrodialysis: low energy consumption desalination processes. 2 Generation of energy in Transformation of the water cycle management 4 vehicle fleet • Hydroelectric operations in • I ncorporation of LPG (liquefied catchment basins. petroleum gas) vehicles in the fleet • I nstallation of micro turbines in the of sewer cleaning lorries. distribution systems. • I ncorporation of vehicles powered by • The use of biogas produced in the the biogas generated in the WWTPs. wastewater treatment process to generate electricity or heat. • I ncorporation of electric vehicles. Use of renewable energy B p t est rac ices In2020 two projects were launched with the aim The Podhradi DWTP in the Czech of reducing GHGs: Republic accumulates 10 M KWh of green energy produced •A PPA (Power Purchase Agreement) was signed for Since it began operating in 2014, the 76 GWh/year of renewable energies (photovoltaic), mini-hydraulic plant at the Czech SmVak which came into operation in July and will reduce water treatment plant has prevented emissions by about 15,200 t COe/year. the combustion of 10,000 tons of 2 coal, equivalent to 23,000 tCOe into2 the atmosphere. •The project to install 3.2 MW of peak capacity In 2019, the energy generation of the photovoltaic panels, which will supply 26 consumption seven mini hydroelectric plants was 4 GWh, points,with an expected annual production of 5 representing 107% of the total consumption GWh/year, which will result in a reduction of GHG in the towns. emissions of about 1,000 t COe/year.2 17 I n this section, construction services were not included as they are not relevant with regard to other services. With regard to countries included in the report, the data for Colombia were not included since activity began in 2020. Neither were the energy data for Oman, nor the environmental data for the activities in Mexico. For all these cases, the reporting system has not yet been established.