OpenEnergyMonitor is a project that develops open-source energy monitoring tools to help people understand their energy use, systems, and the challenge of sustainable energy. It started in 2009 and has grown a large online community that shares software, hardware designs, and documentation. Key hardware includes the EmonTx, which monitors energy data from AC circuits, and the EmonPi, which combines the EmonTx with a Raspberry Pi base station. Open source software like Emoncms allows visualizing energy and environmental data and has processed over 7,000 orders from around the world. The project also supports an open hardware business that employs people while funding further open source development.

1. OpenEnergyMonitor is a project to develop
open-source energy monitoring tools to help us
relate to our use of energy, our energy systems
and the challenge of sustainable energy.
- Started in early 2009, initial concept based on
An adaptation of CliffJao and Xi Guo's PowerBox. Started the
website and blogged about hardware and software
development sharing all hardware design and code.
- 2010 to 2011 we ran a community energy monitoring
project, 20 households in North Wales. 3 new open hardware
units: emontx, emonth, nanoderf. First version of emoncms.
- 2012 Opened the OpenEnergyMonitor open hardware shop
and our open hardware business Megni.
- 2013 saw the start of our collaboration with Carbon Coop in
Manchester with another community energy monitoring project
and the development of an open source building energy
modelling software tool. First versions of SMT hardware.
-2014 again more open hardware revisions. Development of
custom high performance timeseries data engines. A SD card
optimised version of emoncms for long life.
- 2015 already a lot of progress! The EmonPi, new radio
module. Open source zero carbon energy system model with
CAT. Community smart grid project with Carbon Coop.
All through this time the community around
OpenEnergyMonitor has been growing, the forums are very
active and we have shipped over 7000 order around the world

2. OpenEnergyMonitor is a project to develop open-source
energy monitoring tools to help us relate to our use of
energy, our energy systems and the challenge of
sustainable energy.
We are in the middle of this large energy transition. In the
last 6 years global wind power increased 2.5x 121GW to
318GW, global solar capacity increased from 16GW to
185GW.
More and more people now have an element of renewable
energy generation as part of their lives whether its
household solar or a community wind turbine, electric
transport and supporting technologies such as more
efficient housing and heating systems are all becoming
more common place.
Energy Monitoring can help tell the story of this new zero
carbon energy system with realtime information on
renewable supply and energy demand.

4. Is my electricity coming from renewable energy now?
When is a good time to charge my car today or do my
washing?
How much energy do I use? Can I reduce my energy use?
How does my energy use compare to other people?
How much solar, wind turbines do I need to supply my
demand? Do I invest more in solar and wind turbines or
use less energy?
How much energy storage do I need? If I optimise by use
to the variable supply or not?
I read about zero carbon energy system scenarios, but
what does that mean for me in my life, with the way I use
energy?
Open source energy monitoring and associated energy
planning tools are tools to help us understand, plan, test
and manage our new zero carbon energy system in an
open way that empowers people to get involved with
where their energy comes from and how it is used.

5. OpenEnergyMonitor
The enabling Open source Hardware and Software
infrastructure

6. EmonTx
- 4x AC circuits
- AC Voltage (real power)
- DS18B20 temperature
- Pulse counting
- ATMega328 (Arduino)
- RFM12/69 433Mhz transciever
EmonTH
Temperature & humidity node
- DS18B20, DHT22
- ATMega328 (Arduino)
- RFM12/69 433Mhz transciever
EmonGLCD
Wireless livingroom display
- ST7565 LCD + backlight
- Red/green ambient LED's
- DS18B20 temperature + LDR
- ATMega328 (Arduino)
- RFM12/69 433Mhz transciever
OpenEnergyMonitor Open Hardware
EmonTx Shield
- 4x AC circuits
- AC Voltage (real power)
- DS18B20 temperature
- Pulse counting
- RFM12/69 433Mhz transciever
- Arduino shield footprint
EmonBase
RaspberryPI based basestation
With ATMega328 (Arduino) +
RFM12/69 433Mhz transciever
RFM12/69Pi adapter board
EmonPi
Combines the EmonTx with the EmonBase into one self
contained unit.

7. Home Energy Monitoring
An example setup using the emontx,
raspberrypi base station and emoncms.org

8. Emoncms
Open source web application for visualising
energy and other environmental data.
- We provide Emoncms.org as a hosted service.
- Emoncms can be installed on your own server.
- Emoncms can run on the raspberrypi logging
data to the SD card.
Written in PHP & Javascript. Custom high
performance PHP based timeseries data
engines. MYSQL and Redis for meta data.
Python version of emoncms on the way.

9. OpenEnergyMonitor project
OpenEnergyMonitor is an open source software and
hardware project.
We are an active online community, built up slowly over 6
years interested in open source energy monitoring.
A lot of people with considerable expertise in electronic
engineering, software design and energy.
We share all of our software and hardware designs under
open source licence on github
https://github.com/openenergymonitor/
https://github.com/emoncms
As well as providing documentation on how the system
works, from circuit design to the physics of AC power
measurement.

10. Open Hardware Business (Megni)
The open source project OpenEnergyMonitor is
supported by the open hardware business selling open
hardware products.
3 full time employees, 2 part time employees
Over 7000 orders to 70% outside of the UK, used in 70
countries.
PCB's manufacture and SMT assembly in the UK.
Open Hardware business supports the Open source
project not the other way around!
Open hardware business is an effective model
for making and distributing technology and providing
employment while supporting open source development.
Blurs the traditional lines between “business”, academic
research, education.

11. Thankyou for listening