Solar Data
House Data
Project Papers
Raw Data
Project Goals
Contact Us
Global Warming
Solar Generation
this week in kWh
April 23


April 24


April 25


April 26


April 27


April 28


April 22


*=Ice on array
#= Snow on array
April Total






Month High


Month Low


Array Size

2.8 kW


30 Day Statistics kWh

Total:  352.1

Ave Cap Factor: 17.5%

Mean: 11.7

Median: 11.1

Max: 21.1

Min: 1.4

Standard Dev: 6.4

1st Q:  6.8

3rd Q:  17.8

Skew:  0.0


365 day kWh/kW:1390.2

365 day kWh/m2: 243.3


RETscreen 365 day kWh/kW:



Horizontal Irradiance:

1,300 kWh/m2/yr


Curtailment Summary:


Total kWh Sent to Grid:

April: 165

This Year: 350

Total kWh Sent to Grid in:

2016: 1825

2015: 1593

2014: 1486






How do you build a better power supply for a city?

Over the next 100 years the consequences of unchecked Global Warming will devastate large parts of our planet. The burning of fossil based carbon fuels is a major contributor to this effect with electrical power generation facilities and household heating being major players. As the dangers from CO2 pollution become even more apparent, we are on the cusp of a grand human project to decarbonize our civilizations. Our cities will require new massive green power supplies built using technologies which have ultra low or no fossil carbon emissions. In areas where household winter time heating consumes fossil fuels, the electric grid will have to expand supply to provide household electric heating. These new and larger power supplies can be both centralized and dispersed. Solar panels on urban rooftops and small wind turbines are two forms of dispersed power generation. In a plan to decarbonize our city, what are the reasonable estimations that engineers can make for extra electrical energy usage and efficiency increases for an older house in the Greater Toronto Area? The Ravina Project provides some of these basic data.

What is The Ravina Project?

The Ravina Project is a privately funded green energy research project in Toronto Canada located at 43.68 N and 79.34 W. We have used our own resources to turn our home into a science experiment. We want to provide energy use and generation data for the public and do green energy research. See our Project Goals page for more information. We fervently hope that access to our data will be a factor in  giving people the confidence to press forward with their own green energy projects

Upgrades and Efficiencies

We have worked to upgrade our 1920s era house so that it is much more energy efficient. We use a natural gas boiler to heat the house and to provide domestic hot water. We have insulated the house, replaced windows and doors, swapped out all the light bulbs with more efficient ones during the non heating months and use power bars on all 'instant on' devices. We installed 1.5 kW (now 2.8 kW) of solar panels on a tiltable structure, batteries to run the house in times of blackout, and a bidirectional interface to the power grid. We have built this WEB site to publish our papers and data. In short we have modified our house to be a well insulated, Grid resilient, Amory Lovins inspired house.

Our Research and Data Collection

Our Solar Project began on November 1st 2006 and upgraded on September 18th, 2013. The database containing the household carbon energy use begins in 2003. We are tracking our energy use and solar energy generation on daily, weekly, monthly and yearly bases. We have written and continue to write formal papers on a variety of topics including but not limited to: solar power generation techniques and insights, household thermodynamics (focused both on winter and summer time demands), the War on CO2, modeling the future effects of decarbonization upon the household and the policy implications of what we discover in our data. Periodically we will go off-grid for special events, to test our solar energy generation and battery capacity assumptions. We publish our work/data here on the WEB for others to use. See the Project Papers page for the currently available papers. Much of our data are published on the Solar Data and House Data pages.  We have been on Twitter since 2009. Get our daily generation and energy use tweets at: @ravinaproject.

What's New:  Spring is coming quickly. We recorded another day with over 20 kWh harvested. The link to the speech we gave at the 2017 Ontario Good Roads Association conference has been moved to the video page.

Humanity's Post Global Warming Epitaphs: "We could not afford to save ourselves. It would have cost too much."

It is our opinion that humanity's relationship with Global Warming can best be summed up by: Prometheus in the Anthropocene, where his cognitive limitations come face to face with a strange new planet he once called 'Home'.

Upon reflection and integration of much into our thinking, we have come to the conclusion that a global future that is safe for women, that is, a future that allows women to thrive is the best future. In a real sense, women are the 'canaries in the coal mine' such that, a global future where women cannot thrive is a future where humanity is doomed. This works on so many levels; we are baffled as to why this metric is not more widely understood and used.