Investor Presentaiton

Battery efficiency improvements and cost declines are expected to expand the storage market and enable even greater renewables expansion Storage Technology 4-Hour Battery Storage Adder (2) Lithium-ion Battery Pack Cost (1) $/MWh $/kWh $80 $71-$81 $1,200 $70 $1,000 $1,000 $800 ~70% Decline $60 ~70% Decline $45-$55 $50 $38- $48 $642 $40 $600 $540 $30 $400 $19-$29 $12-$22 $273 $20 $172 $10 $200 # $0 # $0 2010 2012 2014 2016 2020 2010 2012 2014 2016 2020 19 23 Source: Bloomberg New Energy Finance 2) Energy Resources' Estimate; assumes: 4 hour battery storage at 40% of nameplate solar capacity; total battery system costs calculated as two times Bloomberg New Energy Finance battery pack cost NEXTera ENERGY

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