PV array

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Things You Do Not Need

And a few things you do

Posted on Feb 9 2018 by Martin Holladay
prime

Houses are changing. Anyone buying a new home in 2018 expects the home to be quite different from one built in 1918, of course.

What “new features” is the typical buyer of a new home seeking out? It depends. Some buyers are looking for a foyer with a 20-foot ceiling and a master bathroom with a big Jacuzzi. Others, including the typical GBAGreenBuildingAdvisor.com reader, are looking for low energy bills and superior indoor air quality.


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Image Credits:

  1. Image #1: Midwest Construction

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Batteries for Off-Grid Homes

Batteries are still expensive, so homeowners are unlikely to be disconnecting from the grid anytime soon

Posted on Jul 29 2016 by Martin Holladay
prime

Is solar electricity cheap or expensive? There are two parallel stories circulating these days. One version of the story — the older of the two — is that electricity from a photovoltaic(PV) Generation of electricity directly from sunlight. A photovoltaic cell has no moving parts; electrons are energized by sunlight and result in current flow. (PVPhotovoltaics. Generation of electricity directly from sunlight. A photovoltaic (PV) cell has no moving parts; electrons are energized by sunlight and result in current flow.) array is more expensive than grid power, and that adding batteries makes PV even more expensive.

The newer tale, oft-repeated on GBAGreenBuildingAdvisor.com, is that PV is cheap and getting cheaper, and that any utility that tries to limit PV installations is doomed to failure — because homeowners who are disgruntled by a PV-hostile utility will choose to install batteries, cutting the cord to the grid.


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Image Credits:

  1. SBS Battery

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Study Finds Solar Panels Add Value to Houses

Researchers study sales records of nearly 23,000 homes and conclude buyers are willing to pay an average of $15,000 more for a house with solar electric panels

Posted on Jan 23 2015 by Scott Gibson

Researchers ledLight-emitting diode. Illumination technology that produces light by running electrical current through a semiconductor diode. LED lamps are much longer lasting and much more energy efficient than incandescent lamps; unlike fluorescent lamps, LED lamps do not contain mercury and can be readily dimmed. by the Lawrence Berkeley Laboratory say that home purchasers are willing to pay more for a house that come with a photovoltaic(PV) Generation of electricity directly from sunlight. A photovoltaic cell has no moving parts; electrons are energized by sunlight and result in current flow. (PVPhotovoltaics. Generation of electricity directly from sunlight. A photovoltaic (PV) cell has no moving parts; electrons are energized by sunlight and result in current flow.) system.

In what was billed as the most comprehensive study to date, the report, Selling Into the Sun, found that buyers would pay an average of $4 per installed watt, or $15,000, for an average-sized system of about 3.6 kilowatts in capacity.


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Image Credits:

  1. Martin Holladay

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The Case for West-Facing Solar Panels

An analysis shows that PV output peaks hours before the grid really needs it

Posted on Dec 16 2014 by Scott Gibson

Most rooftop photovoltaic(PV) Generation of electricity directly from sunlight. A photovoltaic cell has no moving parts; electrons are energized by sunlight and result in current flow. (PVPhotovoltaics. Generation of electricity directly from sunlight. A photovoltaic (PV) cell has no moving parts; electrons are energized by sunlight and result in current flow.) panels face south because the owners of the panels want to generate the most electricity possible. But a recent report says that shifting more PV panels to the west would produce electricity at a time when the electricity is much more useful to utilities, reducing the need for utilities to buy costly power to meet peak loads.


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Image Credits:

  1. Opower

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