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WATTSTOR Presenters
National Solar Centre 29th January 2015 Eur.Ing. Peter Cunningham MSc CEng FCIBSE .Chairman
Mark Smith CEng CEnv mCIWEM. Managing Director
MISSION
To provide affordable and viable energy storage and energy
management systems without the need for subsidy
GENERATE LOCALLY, STORE LOCALLY, USE LOCALLY
“Solar and Wind Power systems are useless when the sun
isn’t shining and the wind isn’t blowing. They also usually
generate their energy “at the wrong time”. A WATTSTOR
silences these criticisms.
Started January 2013
First 18 months spent field testing and product development
Validation from Exeter University Environmental Sciences Unit
Winner – Best New Product, Cornwall Sustainability Awards 2013
Launch funding raised via local crowdfunding and the Seed
Enterprise Investment Scheme in October 2014.
Commercial launch of business on 1st October 2014.
Second round of fund raising under way to pursue further R&D
Wattstor Key Features
The Wattstor can provide on & off grid renewable powered uninterruptable power supply
Maximum Self Consumption of Free Renewable Power
Scalable
Integrates with any Smart Switching System for Hot Water Diversion
We have a LOW COST mission, we are better value than the competition. Payback in 5-7 years
Why WATTSTOR?
Electricity prices
Powercuts
“Our current assessment is that the risks to electricity security of
supply will increase in the next five winters.” (Source – OFGEM)
Peak Shaving, Time Shifting etc.
From Storage
To Storage
Renewable Power Without
Storage
Renewable Power With
Storage
WATTSTOR TARGET MARKET
Phase 1 - Domestic
Initially this is the sub 30 KW system capacity market comprising 600,000 + FiT
(Feed in Tariff) registered renewable power systems in the UK alone with more
arriving daily.
66000+ systems in the South West.
Why sub 30 Kw capacity?
Below deemed 50% export threshold, maximum financial return
Current system suits single phase properties
Phase 2 - Commercial
With the release of our Wattstor IMP plus field trials of commercial inverter chargers
we will undertake larger installations as well as grid energy storage opportunities.
What is a WATTSTOR & How Does it Work?
Base Battery Storage Options
Battery type Cost Recycling Weight Safety Maintenance Battery Life
Lead Acid GEL Low Excellent Heavy Excellent No 5-7 years @ 50% DOD
Nickel Iron Medium Excellent Medium Some risk Yes 20-30 years
Lithium Ion High Poor/Nil Light Some risk No 15-20 years
HG Storage Low Excellent Light Excellent No 30 years +
Wattstor IMP
A programmable and customisable smart switch
can control up to 12 prioritised loads
can control resistive and non-resistive loads at domestic and commercial scale
can function as a simple, affordable Building Management System
can function as a renewable energy export limiter
switching beneficial loads on
switch generation off
Can fully integrate with the Smart Grid
Energy Monitoring system
WATTSTOR IMP Energy Storage Options
The IMP can be configured to control any load so energy can be
stored in any way, such as:
Heat & Hot Water – via Immersion/ Calorifier or Heat Pump
Cold - Refrigeration
Compressed Air
Spring, Flywheel etc.
Pump Storage
Hydrogen Generation
Anything’s possible!
Domestic Test ResultsSite 1: Single Phase Install, 6kWp Solar PV
Pre-installation:
10000kWh imported annually (Large electric only home)
The electricity import in July 2012 was 534 kWh with solar PV only.
Post Installation
6000kWh imported annually (40%/ £600 annual reduction)
85% -90% self consumption of Solar PV
In summer months, the daily electricity import from the utility company averaged 3.5 kWh (costing 53p) with some days at zero import
“In July 2013 with a WATTSTOR fitted this was 107.9 kWh …….. an 80% reduction in … import … during summer periods of high solar generation.”
(University of Exeter Environmental Sciences Institute – report published in full on website www.wattstor.com)
Domestic Test ResultsSite 2: 3 Phase Install, 10kWp Solar PV
Pre-installation:
£4000/yr electricity & oil bill
Post Installation (includes PV, Heat Pump & Wattstor)
£400/yr electricity bill
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
Dec Jan Feb Mar Apr May Jun Jul
Ave Daily Import
Ave Daily PV
Domestic Products & Retail Prices*
Model Description
PriceWattstor 3/3 3kW inverter/charger
3kWh of useable storage
Smart Switch
From
£2950
Wattstor 5/6 5kW inverter/charger
6kWh of useable storage
Smart Switch
Wattstor 5/9 5kW inverter/charger
9kWh of useable storage
Smart Switch
Wattstor 5/12 5kW inverter/charger
12kWh of useable storage
Smart Switch
* Detailed price on application
Base price based on Supply and Standard installation with WATTSTOR internally located (garage/utility room)
and within 5m of distribution board.
The Future
Financing options in partnership with a Renewables Only Utility company
Launch of VERSION 2 of IMP energy management switch
In the pipeline:
Re-used EV batteries
Off Peak Tariff storage
“Ditch The Grid”/OFF GRID systems
Combined Heat & Power/ Generator Support
Grid Level Energy Storage
2014 -2015 – Cornwall and South West
2015 -2016 – South East
2017 – UK
2018 – Everywhere!!!!!
Opportunities to Work With WATTSTOR
Referrals & Commission
Supply of Wattstor Kits: See Mark/Michael for details
Become a Crowdfunder! See Peter for details.
Contact Details Michael Danes
Director
Web: www.wattstor.com
www.ditchthegrid.org.uk
0845 524 0221
TREMOUGH INNOVATION CENTRE,
Penryn Campus
Falmouth University
Cornwall
TR10 9TA
