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April 11, 2022 In

Mahindra – Racing forward with Workplace Charging

 

Mahindra Racing – the ‘Greenest Team in Motorsport’ – is a founding team competing in the ABB FIA Formula E World Championship. Formula E is the world’s first, all-electric street racing series and the closest, most competitive, and fastest-growing category in motorsport – but it’s more than just a race on track! It’s also the leading platform to test new technologies, drive development to the production line, and ultimately lead to more electric cars on the road. It helps to alter perceptions and accelerate the switch to electric too, in a bid to counteract the climate crisis and address the effects of air pollution.

Teams with an impeccable pedigree

Mahindra Racing has an impeccable pedigree. The team was crowned 2021’s Climate Champions at the end of the last ABB FIA Formula E season and was the first Formula E team (and only the second motorsport outfit in the world) to receive the top Three-Star FIA Sustainability Accreditation. The team also became the first FIA World Championship entrant to be certified as Net Zero Carbon Footprint from inception, and we were delighted when the business approached our own impeccable team, to help with their workplace charging requirements at their new UK headquarters in Banbury.

Clarifying requirements, technology, and funding

Mahindra wanted to make EV charging available to all staff and visitors, as well as to encourage the uptake of electrical vehicles. The need was an initial 6 chargers to cover current and short to medium term demand, with the view to expanding in future, and one of the reasons they selected Joju was that they also wanted to explore potential for roof top solar for their Banbury site, to help further decrease the carbon footprint of their premises.

At Joju, we are highly experienced in helping our workplace EV charging customers navigate the variety of funding options available. In Mahindra’s case, as the site and business were eligible for the OZEV Workplace Charging Scheme, we were able to administer this on their behalf to secure a £350 per socket contribution to the cost of the install.

Also, due to being technology agnostic as a business, we were able to recommend the best solution for the site, as well as for our client’s brand goals. As ABB is the principal sponsor of the Formula E Championship, the link to the product on this commercial site was a natural one. Together we examined the ABB product range and agreed the best products for the application – namely the ABB Terra AC 22kW Wallbox chargers. The ABB back-office solution also provides the perfect functionality for Mahindra Racing to monitor their use.

The installation

We carried out the full turnkey installation including all groundworks, installation of the EV charge points on posts, the electrical installation, testing and commissioning, all to the required client timescales.

We pride ourselves on our dedicated project management, technical expertise and flexibility and for Mahindra, we needed to ensure we connected into the existing electrical infrastructure on site, choosing the correct supply chain partner and making sure this happened at a convenient ‘out of hours’ timeframe for the client.

The reaction

Dilbagh Gill, Team Principal and CEO at Mahinda Racing said,

“We believe that ‘doing good’ goes beyond philanthropy and CSR. It is more than just random acts of kindness. It is a purpose, an attitude, and a way of life. As a team, we are committed to finding credible, advanced and next generation mobility solutions while being kind to the planet. Sustainability is not a buzz word for us; it is ingrained into our ethos and a big part of the reason we are racing in Formula E.

The installation of EV charging points at our facility here in Banbury is yet another step in our journey to drive this change towards electrification and it has been a pleasure to work with Joju, whose reputation and attitude aligns so well with our own passion. We are grateful for their guidance every step of the way, and look forward to their continued support as we continue to grow”.

It’s always great to get this kind of feedback and we look forward to working with Mahindra Racing in the future, to keep their workplace charging goals on track!

 

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Tesla, powerwall, ev charging, electric vehicle
July 24, 2017 In

Chris’s Complete Set

Chris Savage has jumped straight into the smart electric future; he purchased the complete set of technologies offered by Joju Solar in one go.  His home now features a solar PV roof, Tesla Powerwall 2 battery storage, an electric vehicle charging point, and an Immersun device to divert any excess solar electricity into hot water heating.

Driven by his electric car

Chris’s reasons for getting solar and battery storage shows how complementary these technologies are.  Whilst we have seen people with PV roofs going on to get and electric car, for Chris it was the other way round.  “I’m fundamentally green, but it was getting an electric car that pushed me into finally doing this.  I’d been thinking about solar for some years, but it was the idea that it could help charge my car that was most appealing.”  Seeing an episode of Fully Charged about the Tesla Powerwall also prompted Chris to incorporate storage into his home energy upgrade.

The design challenge

Integrating so many components can be complex, so ensuring all aspects work well together is critical.  The system is designed so that the solar produces electricity in the day, which is used or stored in the battery.  The battery discharges in the evening and night-time into lights and appliances in the house, and trickle charges the car.  Chris has a plug-in hybrid Mercedes, which has a comparatively small battery capacity of 6.5kWh, so it’s not a drain on the battery.  Chris has got involved too: “I fiddled with the charging profile on the electric car, so it doesn’t exceed the output capacity of Powerwall”.  On the best days in summer, Chris’s PV system will generate more electricity than even the Powerwall 2 can take, so here any excess electricity is diverted into the hot water tank, using the Immersun, rather than being fed back to the grid.

Turning carbon into a game

“It does give you a fuzzy glow to know you are producing your own electricity. It’s very interesting and I’ve been rather obsessive about it! We’ve managed self-powered up in the high 90%’s.  It’s almost a game trying to minimise grid electricity – a bit like driving the car, when we sort of consider it a failure to use fossil fuels”

Further Reading

 

Sunpower, Tesla, Powerwall2, installation
June 15, 2017 In

Robert Llewellyn’s Home of the Future

Comic actor, TV presenter and creator of Fully Charged, Robert Llewellyn, is a passionate proponent of new energy technologies. Fully Charged, started as a YouTube channel looking not just at electric vehicles, but also at the way electricity is generated from renewable sources. It’s now a global phenomenon, with live shows across the world. If you’re not following Fully Charged, we thoroughly recommend you do – it really is the best source of news about new energy technologies out there, and puts mainstream media to shame!

Why choose solar and storage?

Robert Llewellyn has had solar PV on the roof of his house in the Cotswolds for some years, but has increasingly felt he could do more.  “I’ve had solar since 2011 and as soon as you have it, you want a battery. In theory, it makes so much sense and for once in life the practice proves the point”.

The design challenge

Robert is, of course, also passionate about his electric vehicles which also need charging at home.  Our brief was to therefore boost his solar generation, utilise a greater percentage of the solar electricity on site, and use any excess to charge his cars.

The home of the future

We upgraded Robert’s existing solar PV system of 2.5kW conventional modules to 16 high efficiency Sunpower 327 modules, totalling 5.23kW.  These high efficiency modules (over 21%) have doubled the generation from his roof space.

In order to use more electricity onsite, we installed one of the first Powerwall2 battery systems in the country.  This Tesla solar battery unit is much larger than conventional battery units, holding an impressive 13.4kWh of energy.  This greater battery capacity matches to the larger PV system – anything smaller would fill up too quickly.

The system works by using excess solar electricity to charge the Powerwall2 during the day.  It discharges in the evening to loads in the house, but by midnight we don’t expect the battery to be empty.  It’s at this point that the Powerwall2 discharges into Robert’s car batteries.  The car batteries then fill any remainder with cheaper night-time tariff electricity.

This approach is perfect, as the battery is completely empty the next morning ready to capture the maximum possible solar energy throughout the day.

It is slightly unconventional to charge a battery (Powerwall2) and then discharge it into another battery (vehicles), and thermodynamically this might not seem sensible.  It is, however, the best thing to do economically.  Robert uses his free solar electricity first, then cheap night-time electricity, with any remaining (on poor days in winter) coming at standard day rates.

Early results were very promising. As Robert said:

“I’ve had the system running for 2 days and my mains electricity usage has reduced by 95%.  Okay, it’s summer, it’s sunny, and over the year I’m sure it won’t manage that, but it’s obvious it will reduce our overall demand on the grid by a substantial amount and utilise far more of the power the panels produce.”

We think this is a perfect example of integrating solar generation, storage technologies and electric vehicle charging.  It’s complex, from an engineering standpoint, as we have to balance PV capacity, battery storage capacity, loads in the house and electric vehicle loads, but we’ve found an optimal solution.  The home of the future is increasingly going to incorporate all these technologies operating in combination.

One happy customer

“Joju Solar have been patient and supportive throughout the install of my new solar array and Powerwall 2 battery system. They needed to be patient due to my constant faltering, budget anxiety and ridiculous schedule.  They fitted the battery in a day, wired it up, stayed longer than expected to make sure it was all working, left the place spotlessly tidy and did a very fine job.” – Robert Llewellyn

And there’s more!

We’ve since been back to Robert’s home for a further install. Watch this space for details.

 

Further reading

  • We’ve developed a free guide to Tesla’s Powerwall2, so you can understand if it is the right option for you.
  • You can see the installation process for Robert’s Powerwall2 in this technical blog
  • The high efficiency Sunpower solar modules are essential to make this system work. Here’s our guide to the most efficient modules on the market
fully charged, robert llewellyn
November 3, 2016 In

Glenn gets Fully Charged

Glenn Tweedie’s decision to get a Tesla Powerwall and solar PV has led to both energy savings and TV fame!

Background

When Glenn Tweedie decided to have a solar PV array and a Tesla Powerwall installed on his family home in St Albans he probably hoped and expected that it would lead to energy savings for him and his family. What Glenn didn’t plan for was that the installation would lead to internet stardom and a starring role in Robert Llewelyn’s internet show Fully Charged. 

The episode of the show which featured Glenn and his family was filmed a few weeks after Joju installed the system, which included our first ever Tesla Powerwall installation in May 2016.

The Solution

In the Fully Charged episode Glenn talks to Robert Llewellyn about the benefits the Tesla Powerwall has brought to his family and just how much it has lowered their energy consumption from the grid. Indeed, on the day of filming 97% of Glenn’s Family’s energy had come from energy stored in the battery and produced by the solar PV. With only 3% being drawn from the grid thanks to both the 4.5kWp solar array and the Tesla Powerwall working in perfect harmony. Thanks to the SolarEdge PV monitoring platform Glenn and his family can monitor their energy usage via a smart app on their phones and laptops, which has enabled him to show his two sons just how much energy they are wasting when they forget to turn off lights and Playstations.

Getting Fully Charged

The video demonstrates perfectly the benefits of when a solar PV array is installed in sync with a home battery storage solution. The energy savings, the improved family education on energy usage, and even the status that come with having such a complete home energy solution are all highlighted and discussed in depth in the episode.

Watch the film Fully Charged Episode here

dsc_0697 dsc_0696

Further Reading

  • Inspired by Glenn’s story, Robert Llewellyn went and got himself the new model Tesla Powerwall2 and an upgraded solar PV system for his Home of the Future
  • We blogged the installation of the Powerwall2 unit live
  • Find out more about our battery offering, and how we work with households
September 21, 2016 In

Marks and Spencer – Community Energy Scheme

Background

Historically, community energy initiatives have fallen into two categories, depending on where they draw their members from. Investors come from either the local area where the project is located or where the community is geographically scattered are made up of people with a shared passion. However, we’re proud to have helped M&S develop a new type of community energy scheme – where a corporate institution engages the community energy approach to finance renewable schemes.

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September 21, 2016 In

Prodrive to the moon and back

 

The largest community-owned roof mounted solar array in the UK

Background

Prodrive is a world leading motorsport and technology business. They are best known for motorsport, but they are now a technology business working in a range of sectors with operations in Banbury and Milton Keynes employing more than 500 staff.

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June 10, 2016 In

Orchard Field Community School

Orchard Field School meets it high demand within strict grid restrictions

Orchard Field Community School is a large primary school in Banbury, Oxfordshire and a member of the Low Carbon Hub Solar Schools portfolio. The installation was installed in Summer 2015.

Challenge

Orchard Field Community School is a large primary school with a very high energy demand.  The school’s roof along with being large also curves around in a crescent moon shape. This presented a challenge in terms of how to secure the panels to the roof. The lengths of rail which we normally used on gable roofs couldn’t be used.  This also presented a challenge in terms of how best to wire the solar PV modules to the inverters, as panels facing in slightly different directions have different outputs depending on the location of the sun.  Orchard Field was therefore a tricky set up.

The final challenge was also to limit the potential export to the national grid. Despite the high demand on site solar PV export was limited to 50kWp, meaning that we needed to find a way to prevent the PV system from generating 50kWp more than the demand on site at any point in time – a very likely occurrence over the summer holidays.

Benefits

On a clear spring day the solar PV system meets the total energy demand on site. During the Summer this happens  more and more. Whatever the weather this system makes a significant reduction to the School’s electricity bills. And like all our installations in schools it has become a valuable educational tool for the pupils.

Why they chose Joju?

Joju have been one of the preferred suppliers of the Low Carbon Hub for several years and Orchard Croft is just another fantastic example of us working with them.

Headmistress Dawn Shilston said “As a school we feel incredibly proud to be doing our utmost to reduce our Carbon Footprint. It is incredible to consider we are the largest Solar Roof Project on a Primary School in Oxfordshire with our school roof hosting 384 solar panels. It has been an invaluable exercise in educating our pupils for the future on the importance for us all to explore the possibility of using renewable resources for our energy.”

Read More about the installation and all its savings here at Low Carbon Hub

 

 

April 26, 2016 In

Norbar Tools

Norbar Tools get tooled up with Solar PV

Challenge

To scope, survey, design, supply and install solar panels for the Norbar Tools factory in Banbury, Oxfordshire. The project involved a very tight timescale of only five weeks from contract signature to full commission in order to meet the Feed-in Tariff deadline. This was also a community-funded project by the Low Carbon Hub with no upfront costs to Norbar Tools.

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