An LED lighting fixture powered by a Metal-Organic Framework heat battery. The heat battery is formed of a canister, a MOF container comprised of a plurality of MOF tunnels, each MOF tunnel containing a powdered MOF material, a gate, and a plurality of thermoelectric devices.
Below a certain adsorption activation temperature, the MOF material adsorbs a gas from the atmosphere. Above a certain desorption activation temperature, the MOF desorbs the gas. The heat from the adsorption is used to generate electrical current. The desorbed gas is captured to remove it from the atmosphere.