#36 Huvco. The Parans fiber-optic skylight system collects sunlight through lenses on roof- or façade-mounted panels, then funnels the light through optical cables into luminaires. The system’s thin, flexible optical cables, which are routed through walls and ceilings, have high light transmission that allows sunlight to efficiently reach far into buildings, and the luminaires are designed to recreate the feeling of sunlight. 800.832.6116. www.huvco.com.

#37 Sylvania. Dulux EL CFL lamps come in a variety of wattages and types, from general purpose and directional to décor and specialty. This line of lamps includes the Micro Mini, the smallest CFL available, the company claims. The 13-watt version is approximately one-third smaller than the average mini-twist or mini-spiral CFL, the manufacturer says. This Energy Star-rated bulb can last up to 12,000 hours and saves homeowners up to 75% on energy costs over standard incandescent bulbs. 800.544.4828. www.sylvania.com.

#38 Insulspan. Consisting of solid one-piece pre-cut SIP units, the Insulspan Structural Insulated Panel System comes ready to assemble as wall, floor, or roof components, reducing construction time and improving efficiency, the company says. According to the firm, the system’s roof and wall assemblies offer a 40% to 60% reduction in heat loss and significantly reduce air leakage. 800.726.3510. www.insulspan.com.

#40 Kichler. Fixtures in the Design Pro series of LED undercabinet kitchen lighting are designed to last as long as 40,000 hours or 20 years. Special LED chips emit a soft, white light, the maker says, and the fixtures’ super-low profile of just 1/2 inch hides easily under any cabinet. Available in 6-, 12-, and 18-inch lengths of 4, 8, and 12 watts, respectively, the lights feature a snap-together design that allows for a seamless run of lights under multiple cabinets. 216.573.1000. www.kichler.com.

#42 Dri. With the same profile as a traditional S tile, the Solar S Tile module needs no additional roof penetrations or flashings to install. The product was designed with water-shedding functionality in mind, the maker says. 800.482.0347. www.dricompanies.com.