The Skylid has no switches or wires or motors... Instead, the unit contains a series of louvers. Each... is supported and balanced so that it hinges easily around its center and... the louvers are connected with a tie rod so they’ll open and close simultaneously. ...[M]ounted on one of the panels are two canisters—one on the outside and one inside ...connected by ...tubing. ... ...with a very low ...can expand ...in one canister and ...condense in the other with a temperature difference of... 1 degree Fahrenheit. This shifting of the Freon’s weight will open and close the... louvers... and the... sun—even the shade of a cloud—produces... enough temperature variation to boil the Freon from one container to the other. ...[A] locking chain... secure[s] the panels anywhere from full open to full close... to override the automatic mechanism.

In the case of the United States a conservative estimate of the solar energy received in one year might be... Twenty nine thousand three hundred quadrillion Btu as opposed to the 62 quadrillion shown as used during 1968 by the U.S. Bureau of Mines.

[W]hen you're experimenting, about 80% of the ideas you try are failures... But we put all these concepts together and they performed the first time. ...[W]e had pretested most of the ideas we incorporated into this [our] home. We'd never used aluminum-skinned, honeycomb-cored structural sandwiches and... no one had... fabricated a complete building from the material... but every architectural and engineering book mentions the possibility... The 55-gallon, water-filled drums... [W]e... knew the amounts of energy... such... could pick up.

If you purchase certain kinds of hardware to exploit solar energy it will be accounted for and credit will be given to the sun. If you depend on more customary old-fashioned uses of solar energy, growing food, drying clothes, sun bathing, warming a house with south windows, the sun credit is totally ignored.

When small children first start paying attention to... their allowances they briefly commit their... minds to their few coins and... chores... without... considering the budget of the family's household. We can't allow our entire civilization to be similarly ignorant for long. We must ask who's keeping score and why they have such peculiar methods.

Holly had... toys made from polyhedra and she built one of these things and... it... blew my mind... I... found some mathematics books that described the geometry of polyhedra and convex figures. This wasn't too difficult since I had always been fascinated by math. It was the subject I had spent the most time on in school and... was studying at the time.

It would take an enormous crew of experts to determine the efficiency of different orientations of windows, different arrangements of shade trees, etc... To ignore these efforts and only to reward the purchase of "off the shelf hardware" is to further the disease of narrow minded quantification.

[O]ur next concern in heating the building is what keeps the earth warm..? What supplies the United States with the energy to maintain an average temperature of 60 degrees Fahrenheit as it spins in empty space at absolute zero? This is a heating contract that no oil company would be quick to try and fill.

I want to build buildings and design systems that are beautiful and simple and that really work. ...It’s not ...exotic or earthshaking to fill 55-gallon drums with water, paint them black and place them in the walls of a home for use as solar collectors ...but it works.