The papers included in this issue of ECS Transactions were originally presented in the symposium ¿Photovoltaics for the 21st Century 6 ¿, held during the 218th meeting of The Electrochemical Society, in Las Vegas, Nevada from October 10 to 15, 2010.

This book examines solar technologies, describes their properties, and evaluates the technological potential of each. It also reviews the logistics of deploying solar energy as a viable and sustainable way to solve urgent energy, environmental, and socio-economic problems. Topics discussed include solar power generation, today’s solar technologies, solar thermal, silicon PV, thin PV, 3-D solar cells, nano-PV, organic solar cells, solar successes and failures, solar power fields, finance and regulations, solar markets and solar energy and the environment.

The integration of photovoltaics (PV) into buildings goes beyond energy saving by providing a clean and elegant way of actually generating electricity. There are already numerous successful examples and rapid technological improvements promise expansion of PV's present niche market to that of a major energy provider of the 21st century. This handbook is the outcome of a five year programme which took place under the auspices of the International Energy Agency. Architects and solar experts from 13 countries addressed the wide range of engineering and architectural issues involved in the successful integration of PV into buildings. It demonstrates how to maximise the overall solar contribution to the building; integrate PV effectively with the building structure; clarify the relationship of PV with other elements of the building's energy system; optimise the system economics. It forms a thorough design guide that covers all aspects if the subject and will enable all building designers, engineers and property owners to make the integration of PV into buildings an architecturally appealing and energetically effective option.