Archive for December, 2011

Cheaper solar installations

Friday, December 16th, 2011

The need for highly specialized labor and custom installations drives up the installed cost of solar to about $7 per watt nationwide, or roughly $35,000 for a 5 kW installation, before government incentives.

Korman wants to bring the cost down to about $21,600 or between $4 – $4.50 per watt. To achieve this goal, GE would offer a standardized kit that includes modules that output low-voltage alternating current (AC) power instead of the high-voltage direct current (DC) power of most modules. Roofers and electricians can safely install these lower voltage systems on standardized mounts, eliminating the high cost of installation.

Link

Wikipedia – Micro-inverters

Latest and greatest – Enphase M215

These in-panel or attached DC-to-AC inverters are relatively new to the market, and should have a huge impact on the cost and improve the reliability of these systems. Awesome!

Wonky political question – If the government susidized a $35,000 installation down to say $20,000, would manufacturers still have strong incentive to bring the cost down on their own?

Posted by Jim Mathies | Filed in Solar Power, Technology | Comment now »

 

Individual Freedom and Software

Wednesday, December 7th, 2011

“If we allow ourselves to be lulled into satisfaction with walled gardens, we’ll miss out on innovations to which the gardeners object, and we’ll set ourselves up for censorship of code and content that was previously impossible.”

Fitting that I found this article by Jonathan Zittrain today, the same day Microsoft released details on the restrictions of thier new software store. I will not be supporting any “software store” that restricts what my software can display or do -

5.1 Your app must not contain adult content

Apps with a rating over PEGI 16, ESRB MATURE, or that contain content that would warrant such a rating, are not allowed.

5.2 Your app must not contain content that advocates discrimination, hatred, or violence based on membership in a particular racial, ethnic, national, linguistic, religious, or other social group, or based on a person’s gender, age, or sexual orientation

5.3 Your app must not contain content or functionality that encourages, facilitates or glamorizes illegal activity

5.4 Your app must not contain or display content that a reasonable person would consider to be obscene

5.5 Your app must not contain content that is defamatory, libelous or slanderous, or threatening

5.6 Your app must not contain content that encourages, facilitates or glamorizes excessive or irresponsible use of alcohol or tobacco products, drugs or weapons

5.7 Your app must not contain content that encourages, facilitates or glamorizes extreme or gratuitous violence, human rights violations, or the creation or use of weapons against a person or animal in the real world

5.8 Your app must not contain excessive or gratuitous profanity

In the software industry individual freedom is slowly dieing.

Posted by Jim Mathies | Filed in Technology | Comment now »