A System for capturing, storing and delivering energy, comprises a capture means (1; 9; 15) for capturing energy; storage means (22) for storing captured energy; and charging means (20, 21; 23, 24, 25, 26) for charging said captured energy into said storage means (22), wherein said capture means (1; 9; 15) provides electrical energy and said storage means is an electrolyte-based rechargeable battery (22) in which the electrolyte comprises adenosine triphosphate (ATP). A Solar panel (1; 9; 15) used in this system comprises reflectors (2, 3; 7, 8) directing reflected photons onto the panel (1; 9). The battery (22) of the system is charged with a battery charger comprising a capacitor (23) and a control circuit (25) for controlling an intermediate charging and discharging process of said capacitor, said method comprising the steps of: a) during a first period, charging said capacitor to a predetermined level; b) during a second period much shorter than said first period, discharging said capacitor into said rechargeable battery in the form of at least one pulse; c) repeating steps a) and b) until the rechargeable battery is sufficiently charged.