Every household has unique water needs, and it's crucial that everyone has access to safe and high-quality water. If you're considering switching to a IF purifier, it's important to understand how much it will cost and how much carbon you can save, as these factors may vary depending on your specific circumstances.
How much will it cost to provide your home with reliable water?
This depends on how and when you produce your water - the easiest way to estimate how much it will cost to use your IF is to find out how much water you typically use each year and then to match that to the following graph.
We have compared the costs for both bottled water and traditional purifiers so you can see how much a IF purifier would cost you in comparison.
We have used Highland Spring Still Bottled Water 500ml multipack bottles and a Tesco Ashbeck 5L bottle at £1.30.
We have not accounted for the additional cost of transporting this water to your premises.
The average water consumption for a man is 3.7L/day and for a woman is 2.7L/day.
We have used an average of the top 5 rural water purifiers coming in at an average £2k in membrane maintenance per year.
We have not included traditional filters, fridge filters or pitcher filters, as they have been proven to not remove many contaminants found in rural water supplies.
The chart does not include additional costs such as replacement UV bulbs, technician call outs, and energy costs.
This graph shows the energy consumption costs of a IF over a year depending on the water produced per day.
We expect that future tariffs and greater supply of renewable generation on the UK system, that the running costs of a Novus will fall significantly over time.
The graph above uses Octopus GO as an example tariff. The ‘off-peak’ electricity rate is 7.5p/kwh and the ‘on-peak’ rate is40.13p/kwh. These rates are subject to change and were true as of August 2022.
How much carbon would I save by switching to a IF?
IF has no high carbon consumable parts and removes the need for high carbon bottles and supply chains. Using our proprietary low energy distillation technology, we can turn green electricity into fresh water anywhere in the world. By operating at night and producing the majority of the water you need for the day, we are able to buy electricity when it’s cheaper and greener.
The environmental impact of plastic on our beaches and in our oceans poisoning wild-life is well documented, but the carbon cost from production of raw materials, power generation for factories, transportation, and eventual recycling energy requirements is often missed. In 2019 plastic production released 850 million metric tons of greenhouse gases to the earth's atmosphere.
Traditional purifiers that rely on consumable filters and membranes also have a relatively hidden carbon footprint. 94% of filters and membranes used world wide are produced in Asia and flown around the world to be used for a short period of time and then discarded.
Electricity generation has lower emissions compared to transportation and manufacturing of replacement components/bottles due to the hidden supply chain costs involved in providing plastic bottles of water or disposable membranes.
If you were in Scotland instead of London your emissions would be far lower because of the sizable onshore wind capacity located there. This is what the rest of the UK will look like over the next 10 years or so - the government has committed to converting the electricity supply to zero carbon by 2035.
If you have rooftop solar PV a IF purifier can use your free energy to purify and produce fresh water for continuously.
How would the IF be used on a typical day?
Below is REAL data from an actual IF purifier which is actually in someone's home right now!
This customer is on the Octopus GO tariff so their cheap electricity period is fixed from 00.30-04.30 in the morning at 7p/kWh. You can see that the Novus purifier is prioritising morning purification (blue bars) and the water level sensor is then calling for more production as water levels decrease throughout the day.
Water used = 10L
Energy used = 3.7 kWh
Daily energy cost = £2.06*
* base on day rates of 0.55p / kWh
Energy Saver Plus usage:
This customer is using the same amount of water per day, but their energy consumption is considerably lower. They have decided that they only want a set amount of water per day. This is useful, because it allows the Novus system to generate all of the water needed at night (when energy prices are low) and power down throughout the day.
Water used = 10
Energy used = 2.25 kWh
Daily energy cost = £0.15* (£695 saving over on demand)
* base on over economy 7 rates of 0.07p / kWh
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