Southwest Windpower, maker of the small-wind turbine Skystream, just announced a refreshed Whisper line of turbines for battery-charging applications including off-grid residential homes. The Whisper 100 (7′ diameter) has the potential to generate up to 100 kWh per month at 12 mph; the Whisper 200 (9′ diameter) has the potential to generate up to 200 kWh per month at 12 mph; and the Whisper 500 (15′ diameter) has the potential to generate up to 538 kWh per month at 12 mph.
California-based Sunrun and Harris Interactive recently announced the results of a survey of 2,211 adults (1,475 homeowners) about the cost and desirability of installing a home solar system. The main sound bite is the one-liner that “97% of Americans overestimate the cost of going solar,” as well as the stat that “nearly 8 out of 10 of those who do not already have solar panels say they would install solar if cost were not a factor.”
A company called Solyndra pioneered the solar tube but this new invention by UK-based Naked Energy may just take cylindrical solar to a whole new level. Called Virtu, the product includes an integrated photovoltaic cell in a vacuum tube to generate both electricity and warm water at the same time. The setup keeps the PV cool to optimize energy production and maximizes space with a combined PVT solution.
Letting the sun’s rays reach your home’s interior rooms, or down to lower level, is a challenge on any project, and virtually impossible without cutting a large hole in your roof. But now, Solectric offers an electronic skylight that promises the next best thing — interior lighting that is powered by the sun and can be rendered at the same color temperature.