Solar ROI update

I now have a full year of electric production and consumption measured. I also have the SCL rate updates for 2017 and 2018 so I have updated my solar ROI estimates. The significant change is that the Net Metering benefit has substantially increased due to: SCL electric rates are higher in Shoreline than Seattle. …

Solar 11-month update

On a typical “it rained every single day in April” month, we still managed to skate across the finish line at nearly at Net Zero: Last year I removed all the natural gas appliances and converted everything to electric heat pumps. I sized the 10kW array aiming for Net Zero during the …

April solar update

The coldest Puget Sound winter in decades is receding and with it the heat pumps heavy period of energy use. April showers are upon us, the sun is rising higher each passing week and solar output is crawling out of the winter basement. In the past week, the solar panels produced …

Costco Citi Card

While balancing the books I found it disappointing that AmEx dumped access to their site the instant the Costco transferred our accounts to Visa. Companies with better service tend to provide access for a period after cancellation to download statements and the like. I was at first a little perplexed as the Citi statements …

Who’s Afraid of the TPP?

Who’s Afraid of the Trans-Pacific Partnership? Very roughly speaking, DeLong’s argument is this: everyone agrees that Germany is the poster child for an advanced economy with a great manufacturing policy. And yet, their manufacturing employment has steadily declined for the past half century too, just like ours. So if this …

TLS management

Let’s Encrypt, TLS certificates, and HAproxy I’m evolving. As always, the change is being driven by the most pernicious of motivators: pain. I’ve sold, installed, and upgraded SSL/TLS certificates for years. It’s always been mildly painful: I maintain an offline CA where I generate all the keys and CSR (certificate …

US manufacturing

The the USA is still one of the largest manufacturers in the world. Our manufacturing sector is producing as much today as it ever has: source: tradingeconomics.com While it’s true that some (a small fraction) US manufacturing jobs have moved overseas (especially textiles), the vast majority of manufacturing job losses …

heat pump water heater

In July I purchased a GE Geospring ($700 at Lowes in Seattle) 50 gallon heat pump water heater. I installed it myself in the basement. It’s wired the same as a typical electric water heater, so I just ran a new circuit of 10 gage wire and hooked it up. …