Improve Solar PV Panel Efficiency and Output Power There are a number of means available to increase solar panel output and efficiency — some of which may be utilized by the serious experimenter. These are listed as follows: Solar Cell Technology There are a number of technologies being researched and there are continual advancements. Experimental technologies and highest efficiencies include: Multi-cell gallium arsenide – 44% Single cell gallium arsenide – 29% Crystalline silicon - 25% Thin film copper-indium-gallium-selenide – 20% Emerging PV technologies (dye-sensitive cells etc.) – 11% (low efficiency, but very inexpensive) Check out this link for an informative solar cell research chart: http://upload.wikimedia.org/wikipedia/commons/7/71/PVeff%28rev121211%29.jpg Unfortunately, we live in the real world and the highest efficiency technologies are either unaffordable or have not been put into production. As a result, the experimenter is generally stuck with crystalline silicon techn...