Dramatis personæ: How to do zero Carbon emissions at a residence (Westwood, MA)

Updated, 1st October 2019

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Our external meter is now reading negative.

Peak was 2850 in April 2016. Solar panels were grid connected on 31st December 2015.

Now, and for the last couple of months, our electric bill has been negative:

This is the trend heading to zero on the meter, including a calculation of household electricity consumption. We heat with electricity, heat hot water with electricity, and have an induction stove:


Air source heat pumps for heating and cooling:

You can find the latest on these systems here. We have models ASU12RLF, AUU12RLF, ASU9RLF.








Air source hot water heater (General Electric):


And, of course, 29 SunPower PV panels installed by RevoluSun:

So far we’re generated 6.6 megawatt-hours:





Our inverter:

And this is the oil heating system we orphaned to do this:

Update: 2017-05-26

We have leased a Chevy Volt, and received a bounty from Massachusetts for doing so.

Update, 1st October 2019

The Chevy Volt has very recently been replaced by a Tesla Model 3. The figures above don’t reflect what the Model 3 is doing to our electricity needs. I’ll post an update once we have a half year or so of data.

About ecoquant

See https://wordpress.com/view/667-per-cm.net/ Retired data scientist and statistician. Now working projects in quantitative ecology and, specifically, phenology of Bryophyta and technical methods for their study.
This entry was posted in Anthropocene, Bloomberg New Energy Finance, bridge to somewhere, Buckminster Fuller, citizenship, clean disruption, climate business, climate disruption, climate economics, decentralized electric power generation, decentralized energy, electricity, electricity markets, energy, energy reduction, energy utilities, fossil fuel divestment, global warming, green tech, grid defection, Hyper Anthropocene, investment in wind and solar energy, local generation, Mark Jacobson, Massachusetts Clean Energy Center, Michael Osborne, microgrids, New England, open data, regime shifts, RevoluSun, Sankey diagram, solar domination, solar energy, solar power, Spaceship Earth, SunPower, sustainability, the energy of the people, the green century, the value of financial assets, Tony Seba, wind energy, wind power, zero carbon. Bookmark the permalink.

11 Responses to Dramatis personæ: How to do zero Carbon emissions at a residence (Westwood, MA)

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