home automation server aggregating 8x temperatures, 4x humidity, weather station, 6xPIRs, 2x NFC readers, 2x CO, 6x pressure, 3x cameras, and 1 relay for thermostat, about half of these are still running via arduino nano clones as I migrate to purpose-built ICs. presently also hosting 6tb of files, but it gets bogged down when 2 PIR activated cameras are recording while streaming 720p+ video so will likely offload this to a separate unit during next overhaul.

have a separate one for building out things before I add to the above, presently ~13x reed switches, and 16x relays as I migrate from sensing to control.

coupled to my router running vpn and a webserver, I get all I want at ~10W tdp.

Water has a heat capacity of about 4 kJ/kg*K, which is to day it takes 4 kJ to raise 1 kg of water 1 K in temperature. A typical rock (granite, say, although most others are similar) has a heat capacity of 0.8 kJ/kg*K, so rock is both less able to transport heat and less able to absorb heat than water.

that is the intrinsic property of specific heat capacity, isn't the extrinsic property more important here as we are talking about specific amounts of things? Rocks have >25% (2-3 times?) density of water so for a fixed volume, rock holds more thermal energy than water.

Yes as Ambassador Kosh notes below.

1. replace your refrigerator. If you have one over 10 years old a new model will pay back quickly. models with efficient compressors will payback well (I replaced a 15year old GE with a new samgsung with a 2. yes insulation. DIY your attic insulation and if you have more than 3000 HDD, it will probably pay off in a single heating season
3. when exceeding 6000 HDD (northern climates), paying a contractor to insulate your exterior walls will pay off very quickly
4. in a cooling climate, a modern 15-16 SEER AC will pay off
5. in specific situations even high efficiency windows will pay off
6. in a cooling climate painting your house white will pay off. planting trees to shade from noon/west sun will pay off
7. in a cooling climate a hot water heat pump may pay off
8. natural gas furnace upgrades will not pay off until gas exceeds ~2 $/therm.

lastly, cover your whole roof with a PV array, it will withstand the hail =) also consider a metal roof. contrary to popular opinion, they are quieter and more robust than asphalt shingles.

This idea is contradicted by RECS and census data.

best parameter of growth (children per women) is education level of women. strong inverse correlation.

Except standard of living = energy consumption (or nearly so).

+- 200% error is not nearly so, especially when Americans are +200%

You are wrong. It isn't a democracy. The NFL is essentially a criminal enterprise whose existence and methods were legalized via backdoor legislation. This is not democracy. Finding "cooperative" judges to side-step referendums, overlook glaring legal issues for "expediency" and bypass the spirit of the law due to overwhelmingly negative public opinion is not democracy. Making baseless, unjusitified, and wholly discredited financial estimates and claims to ultimately leveraging the ignorance of citizens to provide corporate welfare is not democracy. Its collusion, fraud, and plutocracy.

Municipal law in Minneapolis required a vote on any public financing over 10 million. Somehow the state and the mayor railroaded around this legislation and started building a billion dollar stadium without public consent. The did this because spending a million dollars per citizen was wildly unpopular. The city council members and mayor were subsequently removed from office. Yet there is still a billion dollar stadium going up essentially due to legalized racketeering. Lawsuits against the construction had merit but were repeatedly shut down; the judges concluded it was too late because firms illegally started work before the municipality even had authorization to proceed with contracts...Other locations have had stadiums built under similarly auspicious conditions.

Furthermore, there is no evidence of this supposed business flurry that stadiums bring. It's like the fabled money making college sports programs. The math does not work. There is ample research negating these bogus claims. It's hilarious how you equate a billion dollars in revenue (extremely arguable) as justification for extorting (tens?) (hundreds?) of thousands of dollars from each of the citizen of Phoenix. Do you seriously expect to reap financial rewards ? This is corporate welfare of the worst kind.

I don't want to go on a rant here, but supporting the NFL requires extreme moral compromise. In essence fans support an enterprise in legalized racketeering, legislated collusion and extortion, the willful and continued criminal cover up of TMI and even pre-concussive TMI, the exploitation of youth, especially disadvantaged youth by pro and "college" play, and the perpetuation with war-like simulation and mysogeny. In retrospect, it may be the perfect analogy for America.

Their ability to organize as a non profit was specifically carved out for them by legislation. Its corrupt.

Let's just eliminate all specificity and refer to everything as physics. Sounds useful to me! Anything else is just more hype for charlatans and fools! Nuance and differentiation are for the birds!

i agree, but i might share the same advice regarding your current administration

perhaps you mean the myriad state subsidies. I agree, 90% should be eliminated immediately, because they artificially inflate the cost of solar. yes. states with subsidies have higher solar costs. namely, CA, MA, WA, MN, NJ, egregious subsidy programs and very high costs.

the 30% ITC? No problem. its goes to 10% in 2016 anyway. Modules will be 30% cheaper by 2018-2019 anyway.

I'm glad you're still opining on things based humorously outdated knowledge, however.

there is no storage in bloom. its just a local natural gas guzzler in the shape of a fuel cell instead of a gas turbine.

and now that modules are cheap and net power is less a concern than generation profile, we can start defining a vast, distributed array that is both impervious to intermittent cloud cover and provides a very flat and predictable production curve for 8-12 per day and provide on the order of 60% of residential and 80% of commercial power consumption.

as shown by the trillions of dollars we've wasted on utter fail so far.
I'd love to see evidence of that figure. I'd also love to see you opine on the cost effectiveness of investment in nuclear and fossil fuel technology relative to their present cost effectiveness relative to solar. Please contrast it with the 'trillions' of public money [we] wasted on the solar fail. I expect you would rather live in denial.

That isn't residential ( I would be surprised if it scaled smaller sizes) and it looks like an academic prototype. Regardless 0.75 is good for single effect unit. Of course, this thing has to hit the design condition in cloudy and humid weather or you also need an AC.