What Utilities Can Do for Distributed Solar

Date: 31 Oct 2012 | posted in: Energy, Energy Self Reliant States | 2 Facebooktwitterredditmail

Last week the Minnesota Public Utility Commission had a rare live public comment period on Xcel Energy’s long term planning process (called an Integrated Resource Plan).  At the urging of several fellow clean energy advocates, I gave my 3 minute … Read More

Increasing On-Site Consumption of Distributed Solar

Date: 22 Nov 2010 | posted in: Energy, Energy Self Reliant States | 0 Facebooktwitterredditmail

It’s rarely mentioned that a home with a solar array still gets most of its electricity from the grid.  In fact, without storage, a typical home solar array might only serve one-third of a home’s electricity use, even if the … Read More

New Rooftop Solar Thermal System Focuses on Space Heating and Cooling

Date: 9 Nov 2010 | posted in: Energy, Energy Self Reliant States | 0 Facebooktwitterredditmail

Solar thermal has generally been two distinct worlds, rooftop solar hot water systems and utility-scale concentrating solar power plants.

No more.

A new rooftop solar collector can provide thermal energy rather than producing hot water or electricity for space heating and cooling. With inexpensive fresnel reflectors to concentrate sunlight, the Chromasun could prove an interesting way to use distributed solar thermal energy for more than just hot water.

The unit produces temperatures up to 220 Celsius and promises to use less roofspace than comparable systems using solar PV. 

Now, what will it cost?

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Better smart grids serve consumers, not just utilities

Date: 20 Oct 2010 | posted in: Energy | 0 Facebooktwitterredditmail

But what’s most interesting is the state’s desire to make sure that investment in smart grid technology will pay off not just for utilities, but for consumers as well. For instance, Hawaiian environmental groups are apparently pushing for rooftop solar panels, a more green approach, than simply better managing supply and demand via a network-enabled smart grid.

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