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While those are reasonable defaults, Enphase also addresses them in their "PV Watts Calculation Values" application note. Their suggested...
The Enphase inverters are all right around 95% efficient and very flat in their efficiency curves - one of the best I've seen. California...
I don't know for sure - all I know is that altitude will result in additional output - 5% seems reasonable but am curious as to how you got that...
Impressive - that's an average of 140W 24/7 for 30 days. My house (2 adults, 2 kids) average 400-500 kWh/month. I'm sure that the electric...
The EIA seems to think it was for two primary reasons: Increases in renewable generation and drop in natural gas prices. EIA - U.S. Carbon...
Unfortunately, I do not. Your math is off by a factor if 10.
No, the graphic shows that in 2009 coal dropped (still the biggest overall producer), NG/hydro stayed relatively constant and other renewables...
Where did you get that information from? Clean energy (nuclear, hydro, other renewables) didn't drop a bit in 2009. Nuclear has slowly been...
Looking at the percentages... And look at what happened to total coal production in 2009 country wide when compared to the rest of the country...
If the chart included data through 2009, I'm sure the drop in coal power would be much larger...
If you look at coal power output, that is the only segment of the industry which has declined in output over the last few years. Everything else...
After 40k+ miles on the stock Goodyear Integrities they were just about down to the wear bars with the shoulders wearing a bit faster so it was...
That's good - usually fuel economy drops a bit the first couple thousand miles as the tires break in. They should slightly improve over time.
Sagebrush's argument in the past is that any additional loads on the grid are in essence fossil fuel powered since that's where spare capacity is....
On an individual scale it may work that way because of existing extra capacity, but on a large scale, if everyone paid a bit extra for the...
Another cheap trick to improve grip on the front end is to dial in as much negative camber as possible (many will use special camber bolts that...
Funny, last time I saw someone do that, it was a Vette - but he was parked right in front of the restaurant! I guess he thought he was that much...
You must mean on the Tesla S - thought you were talking about the Roadster. I'm sure different battery pack sizes are coming in future cars - but...
Wait a sec - there are guys out there modding their Teslas? OT - but post more details. :D
Historically, you are right - but how will those cycles change once the globe has warmed up a few degrees? They certainly aren't likely to keep...
