The short answer is it’s often unlikely but it’s not always about the money so please read on.
To clarify a solar specific charger is a device that detects home solar input and can be set so an EVs charging amps will not be higher than the excess solar available, for instance if the sky becomes cloudy and solar input reduces so will the EVs charge input.
If you have a neighbour that loves calling your Tesla a “Coal burner” there’s no better way to shut down the claim than by charging 100% from solar power, a solar specific charger is a good way of achieving this. As your neighbour is already too thick to understand electric motor efficiency they won’t be wise enough to work out you’re not saving any money by charging via a sometimes expensive piece of equipment.
Perth is the sunniest capital city in Australia – Yep, even sunnier than Brisbane in the sunshine state. During daylight hours the sun shines on average two thirds of the time in the Perth area so installing a device that only allows solar to charge an EV is redundant for two thirds of the time.
Combined Installation and unit cost – This varies by a large margin so it’s best left to a case by case basis, what is important is to get an accurate dollar figure on the difference between a fully installed solar specific charger and a fully installed “dumb” (generic) unit that continues charging at the same amps. For instance if Tesla have provided you with a free Gen2 UMC that you plan to plug in to an existing 10/15amp wall socket your installation plus unit cost is zero dollars. If you’re considering a $750 Tesla destination charger (HPWC) with a $750 installation cost your total cost is $1500. Keep in mind $750 is an example as installation costs are wide ranging.
Now as an example if you get a quote of $2000 for the solar specific charger plus $750 installation the extra upfront cost to charge directly from solar is between $1250 and $2750.
How long will the payback on investment be?
Once you have a fixed and trustworthy quote and you also have a firm understanding on how many kilometres you plan to drive per day using home charging use the below chart to do some calculations. If you’re not sure about driving kilometres yet a good guide is this, the average passenger car travels 38kms per day in Australia.
I’ve factored in a unit cost of 30 cents from the grid and the 2023 feed in the tariff of 3 cents per unit, this provides a potential saving of 27 cents for every kWh of solar going direct to the car. Keep in mind that In Perth across a whole year the sun is shining 2/3s of the time anyway.
The decision to install a solar specific charger is up to you, just think through these questions:
Do you drive enough distance per day to justify it?
Do you plan to charge from home during the day on an almost daily basis?
Do you have enough excess solar?
And does the units warranty period match your expectations?
The most recent Tesla Superchargers in Karrinyup, Williams and Margaret River are V3, the 2017 built Eaton Superchargers are V2. Those who’ve charged at Eaton will have noticed each charging stall has two cables, the second cable is a retrofitted CCS2, that’s the one 99.9% of WA Tesla owners will use. V3 chargers are vastly superior as each stall is capable of delivering up to 250kw depending on the vehicle battery type and size, starting percentage and battery temperature. The V2 stalls at Eaton have a maximum output of 145kw for each pair of stalls (1A&B, 2A&B, 3A&B), meaning if you plug into stall 1B not long after a car has plugged into 1A your initial charging speed will be very slow. The trick is to avoid parking next to another car if possible. The slower charging speeds at Eaton are only a nuisance on busy Saturday mornings on a long weekend. To get the best charging speed set navigate to the Supercharger and the car will automatically preheat the battery pack before arrival, on cool days this makes a significant difference to the starting charge rate. A second tip for the fastest charge rate is to arrive with approximately 10% range and depart with 60-80% depending on the distance to the next chargers. Arriving with only 10% is advice I would never give with any other type of charge point in Australia, the fact is Tesla Superchargers are vastly more reliable than any other DC chargers in this country.
Eaton Supercharger cables.
Why not charge to 100%?
Basically 80 to 100% takes longer than charging from 10 to 60%, wasting time defeats the main purpose of a Supercharger. Be aware that when a Supercharger gets busy charging may get limited to 80%, the phone app will provide a notification, if charging past 80% is absolutely necessary it can be overridden. You can read more here: Charging to 100% is a waste of time.
Don’t overstay you visit- Once your car has completed charging you have 5 minutes grace to move the car, failure to do so will result in a backdated per minute surcharge added to your Supercharger account, as the phone app will pre warn you there’s no excuse.
Over the past 7 years we have stayed in every state and territory of Australia and charged overnight at well over 100 different caravan parks, cabins and other accommodation that fall under the category of tourist parks.
There are some great sites, many over the top with attractions that never existed 30 years ago. Some are dusty, run down, patched together and best described as rustic. Some owners and managers are very EV friendly, others spend too much time watching Sky After Dark and will grudgingly let you plug in only to provide a running commentary on why EVs are City cars (even though you’re at a site 1200kms from Darwin). The one constant is getting a charge is always possible and, although slow, extremely convenient while you’re relaxing.
The majority of locations have enough power to supply a full park of Caravans or RVs on a hot afternoon. However be aware that some have issues due the business expanding faster than expected, they are pushing their luck and eventually come unstuck just before dinner time on a hot day when the power shuts off. This shouldn’t be happening with a correctly built power system but on the rare occasion it does. Generally the power outage forces all the Grey Nomads to shut off their air-conditioners and venture outside thus easing the load when power is restored. A second issue to look out for are power outlets in poor condition due to having a hard life from careless tourists and a harsh coastal climate. If you think the power outlet looks dodgy find a better one, always take the safe option.
Tourist Parks factor in the cost of electricity to any site fees, a powered site is normally $8 to $15 more than an unpowered site. That does not mean you have full rights to plug in and charge for 20 hours straight, random power consumption of non EVs has been factored in not an EV potentially consuming 60kwh on one nights tariff. On most occasions I would suggest you offer to pay extra to charge the car, especially at a smaller privately owned business, very often the reception will refuse payment because you asked politely. Remember to wear your diplomatic hat for the benefit of you and the following EV owners.
Tips when plugging in:
Avoid using extension cords when possible. The only time I’ve needed one is when using a Tesla Gen2 UMC with the flat plug, these are difficult to fit it to many power bollards. If you do require an extension cord use the shortest 15amp possible.
Avoid making your charging cable a tripping hazard, keep some slack on the ground under the charge port and tape the cable to the lower section of the bollard so charging doesn’t get interrupted by someones foot on a dark evening.
If you have plenty of time to get enough charge required for the next leg of your journey set the amps lower and charge slower for longer, this way there’s less chance of any charging interruptions that could delay your morning departure.
Don’t be concerned about charging in the rain but do keep the charging unit off the ground in low lying areas as most tourist parks have firm ground with poor drainage.
Last of all don’t forget to turn off your air conditioner while charging, if you don’t plan for this extra consumption the charge percentage the next morning will be far less than expected.
The Tesla UMC Gen 2 (mobile connector) was introduced into Australia in mid 2019, all Tesla’s ordered before July 9th 2022 were provided with this charging cable for free, any buyers who ordered cars after that time have the option of purchasing from Tesla for $550 or looking for an aftermarket alternative. Many choose to stick with the Tesla product as it’s still one of the lower priced cables available.
Most owners make use of the included 10amp or 15amp plug. For home charging this provides enough charge for drivers that average up to 120kms per day, keeping in mind that the average Australian car of any fuel type travels only 38kms per day.
A common practice among Tesla owners is to purchase what is known as the Tesla UMC to 3 phase tail (approximately $150). This is a well made adaptor that connects straight into a 5 pin 3 phase outlet, this increases the potential power available to 32amp single phase, very handy for home charging if the electrician installing the 3 phase socket gives it the all clear. A Tesla owner could then add up to 300kms a day while parked at home.
Despite its low price and versatility at home the 3 phase tail has an Achilles Heel when used in regional areas on long trips- it’s NOT 3 phase, it’s only single phase.
The downsides:
A Tesla model 3 or Y has an 11kw 3 phase onboard charger, 11kw is only possible when the car is connected to a power source with a minimum of 3x 16amps, most 3 phase outlets in regional areas are 20amp or 32amp so that’s not an issue, the issue is the Tesla Gen2 UMC plus tail is limited to 32amp single phase, that’s 7.4kw from a 32amp outlet, or 5kw from a 20amp outlet. A prime example of how crippling this can be is at Border Village in South Australia, where the power outlet is limited to 20amp 3 phase. A Tesla using the correct 3 phase cable can charge at 2.4 times the speed as a Tesla using the Gen2 UMC. Border Village is one of the better roadhouses but hanging out there for many hours longer than necessary should be avoided.
A correct 3 phase cable (also known as an EVSE) drawing 16amps from each 20 or 32amp wire is unlikely to trip the breaker even over a long charging session, drawing 32amps through one phase for hours on end adds to the possibility of tripping a breaker, that’s not a situation you need while asleep or away from phone connection.
Lastly, drawing 32amps single phase on a site with low generating capacity at certain times of the day can cause the maintenance chief to get a bit agitated, a reliable electricity supply is critical to regional locations, at least one regional roadhouse that I know of has now barred EVs from charging after 7 years of goodwill.
What cables are best:
There are a number of 3 phase EVSE cables available including the high priced but extremely tough Juice Booster 2, the Kwik Mode 2 EV charger or the KHONS 3 phase charger. All have type 2 plugs on the car end and are easy to operate and store.
Juice Booster 2KwikKhons
Over the past 7 years I’ve plugged into the vast majority of official Plugshare 3 phase outlets across Australia, I can confidently say if you use the correct equipment your journey will be smooth, if you try and save a few dollars you’ll soon regret it.
Western Australian Tesla’s represented for the 8th year at the annual Como Rotary Car Show. Come along for a chat and talk to some experienced Tesla owners including event committee members Jared (0487 362 111), Paul and Alex (0428 994 832). If you are keen on finding out about charging cables, there will be plenty on hand with owners willing to provide the correct information on how and where to use them. Hope to see you this Sunday 2nd October 2022 any time between 9am and 3pm.
To be very clear if you purchased a $70k+ vehicle and saving money on refueling is the only focus you’ve missed the point, lower long term servicing and repair plus the far longer lifespan of a Tesla are just as important. Throw in the high safety rating and the additional storage a Tesla provides and ownership is a broad package.
Without doubt the best EV charging is at home, even 30 cents a unit grid power is at least half the price per distance driven than a similar size and performance petrol car. If you charge off peak, even cheaper. Those using home solar are reducing their fuel cost by up to a factor of 8. Best of all parking at home is safe, no door dings from lazy parking, no stray shopping trolleys, there’s big savings to be made from avoiding the panel beaters.
What about all those free Tesla destination chargers? These are not free, they’re complimentary, almost all Tesla destination chargers are owned by a local business that have installed them to support EV owners. The electricity is not paid for by Tesla, it’s paid for by the small business that would prefer you drop in and buy a product rather than you sitting in your car watching Netflix.
Is there an app that shows all the free chargers? I get asked this question often in public and the answer is “not specifically”, the best way to find them is to log on to Plugshare, find the busiest and always in use chargers in the metro area and its a sure bet they’re free.
So what is the best free charger in WA? The one at your home, it’s never ICED, it doesn’t require an app, you won’t get panel damage and best of all it’s free to use any time you like.
While on the subject of free, TOCWA have a free loan of charging cables and spare tyres for members, membership is $20 per year via this link.
Clearly the quicker (and possibly cheaper) option is to travel across Australia on a commercial jet, so if you’re not sure you have the patience and planning skills take the airport option. For those more adventurous read on.
Before I continue I want to make something very clear: If you aim to get across the country as quickly as possible in your EV it can only be done with planning and patience. Trying to rush will not gain you any time but it’s highly likely you will lose time by; unplugging too early, not reading the Plugshare comments, and lastly not respecting the opening and closing times clearly marked on the Plugshare description.
By March 2025 the WA state government should have enough fast DC chargers installed between Perth and Eucla to provide a fairly comfortable trip.
To keep this a moderate length read I’ll focus on the drive between Port Augusta and Norseman, a distance of 1,670km. There is already an article on TOCWA’s website discussing the Perth to Kalgoorlie section.
The road – It’s generally good the whole way with a long sections of chip seal surface that increases energy consumption. There are no overtaking lanes but considering it’s mostly flat and straight with good visibility overtaking is relatively easy. Despite the road being good I highly recommend you take a full size spare tyre and wheel combo, in the unlikely chance you get a tyre issue it will be a major one rather than a slow leak from a tech screw. Be aware Roadhouses don’t replace tyres, they sell fuel, food and drink.
What to do/take:
Make sure your cold tyre pressures are correct, keep monitoring those pressures throughout the journey. Do not neglect your tyres at any time during the trip, check the wear particularly the inner rears.
Study Plugshare thoroughly before you leave, especially the comments. While charging during the journey check Plugshare for your next stop just in case there’s any late changes. Always check into Plugshare so other EV drivers on the Nullarbor can plan ahead. Edit: it has become very apparent that the number of EVs crossing the Nullarbor have increased significantly through November and December 2022, there is a chance you could arrive at a charge point that is already in use, it is in your best interest to plugshare your journey so other drivers can liaise with you. The simple 30 second task of checking into plugshare by yourself and other EV travelers could save you 3 or 4 hours of wasted time at the next charge stop.
Take the correct charging cable plus plan B and C cables. The correct cable is a 3 phase Juice Booster 2 or KHONS cable, the Tesla GEN2 UMC to 3 phase tail is a plan D and should NOT be used on Nullarbor 3 phase outlets unless you’re desperate.
I can not stress how important it is to follow the mantra of ALWAYS BE CHARGING, do not cut your charging session short at a working charge point because you think the next one is faster or cheaper.
Telstra is the only choice for any chance of phone reception (of course if you fit in your roaming Starlink dish you’re king of the Nullarbor). Even carriers using the Telstra network do not work. Note: Starlink Mini with roaming is very good value now. Also enable Wi-Fi calling on you phone.
Keep yourself busy and the charging time won’t appear so slow, Nullarboring is a term used by people with no imagination.
Have the BOM app on your phone – The air temp and wind direction can have a big effect on your range, plan ahead and add more charge than you require to be safe.
Take a relaxed attitude about the facilities, most of the infrastructure is pre 1976, it’s generally clean but worn out. Producing clean water, electricity and keeping everything operational is expensive due to being so far from a capital city so don’t expect much value for money. Take note that due to staff shortages most locations have cleared up the dishes, closed the bar and hopped off to bed far earlier than you expect.
A hand held CB radio is a great asset for listening in for any hazards in the near vicinity being discussed.
Wear a Diplomatic hat – like much of the country, regional areas are struggling to find staff, those on site are working long hours, you are one of a hundred customers that day. Keep in mind by allowing EVs to charge Roadhouse management are doing you a favour rather than making a profit from selling electricity.
Understand that some new staff members have no idea the business has a charge point, it can be a interesting conversation.
Leave early arrive early, getting on to the road just before sunrise is a great way to start the day, plan your first charging stop for a late breakfast. Traffic is almost non existent in the early morning, visibility is good and it’s easier to spot wildlife. By late afternoon it’s best to be parked up with the car on charge while the rest of the tourists are frantically racing to their next destination while driving into a blazing sunset with no hope of seeing a Roo about to smash the headlights.
Take into account as you drive east you’ll lose an average of 15 minutes of daylight every 400kms, on the drive west you’ll gain 15 minutes.
Be very aware of the change in time zones as the Nullarbor also has its own AWCT time from Cocklebiddy to the WA border, you may roll up to a Roadhouse thinking its 6.30pm when it’s actually 7.15pm and the staff have locked up for the evening.
What not to do:
Don’t make up your own rules for charge stations, follow any written instructions or you may end up disrupting charging for yourself or any following travellers. Some charging stations across the Nullarbor do not follow the normal process that you may be used to.
Do not plug in without seeking permission, if you have a passenger get them to go seek out a staff member while the driver parks up and gets the cable ready.
Do not Hypermile, it’s not necessary with the biggest gap between chargers being 200kms. It may be okay to drive slower in the early hours of the morning when the roads are virtually free of traffic but during daylight hours anything less than 90kmh has the potential to aggravate other road users.
During overnight stops don’t try and charge too fast if you don’t need to, plan to have your car finish charging just before expected departure. If you charge at the highest rate and the breaker trips during the night you may not realize and could end up wasting time in the morning.
Do not turn off the air conditioner on warm afternoons, a warm interior reduces driver concentration, set the aircon to 22.5C and all will be fine.
Do not drive fast through the RH car parks, most are Limestone and can be in poor condition with cavernous potholes that are difficult to see, on most occasions it’s less than walking pace or you may end up rattled.
Don’t plan to drive too far in one day especially if you’ve booked accommodation in advance. Plan to arrive at least 2 hours before sunset.
Port Augusta
Edit November 2024: It has gone from rags to riches in a very short time with 2 more DC locations available, Tesla Superchargers and another RAA DC charger.
Edit December 2023: Port Augusta now has a 200 kW DC charger located on the waterfront adjacent to the Majestic Oasis Apartments courtesy of RAA of South Australia.
There’s two AC charging options in town, we prefer to use the Majestic Apartments that are centrally located and very secure. The accommodation is very nice with washing machines and dryers in the rooms. Although it’s not necessary to be a guest to use the Tesla HPWC it’s wise to ring at least half a day in advance, ask permission and provide an accurate arrival time, that way the staff will place a witches hat in front of the car charger and open the security gates when they see you pull up. Reception normally refuse payment, a big thank you and some quality chocolate won’t go amiss though. Coles, Woolworths and Big W are all within 200 metres so you can stock up before heading west.
Kimba
Edit November 2023: Kimba now had a 150 kW DC charger located at the Kimba Caravan Park on the Eyre Highway courtesy of the RAA of South Australia. There are also two 7 kW type 2 chargers at the Kimba Bowling Club next to the excellent free camp. Prior to these upgrades below is what the EV community relied on.
Milton tyres has been generously offering EV charging since May 2016, they recently upgraded to a 32amp three phase outlet that makes charging even easier. Payment is dependent on the length of stay. Keep in mind that unless prior arrangements are made this service is only available during business hours Monday to Friday.
Wudinna
As of November 2023 Wudinna has a 150 kW DC charger located at Wudinna Hall courtesy of the RAA of SA. Bakery is open 9 to 4 Monday to Saturday.
Poochera
Thanks to Jeff and Karen for offering a charging service since May 2016 after a visit by WA Tesla owners Matt and David. Due to the opening of the Kimba, Wudinna and Streaky Bay DC chargers, from February 2024 the 3 phase is no longer available. The small caravan park is still available for bookings.
Streaky Bay
As of November 2023: Streaky Bay is now an option with the installation of the 150 kW DC Charger at the Well Street carpark courtesy of RAA of SA. If you are in a hurry to cross the Nullarbor charging at Streaky Bay is not required.
However this is very pleasant town to stop in overnight, the caravan park is across from the charger and the hotel is a great spot for a meal with views across the bay. Detouring to Streaky Bay adds 33 kms to your total trip.
Ceduna East-West Motel
Update April 2024: The Ceduna RAA DC Charger is now operational next to the hotel on the foreshore.
The East-West Motel is the original charging option in Ceduna. There are two Tesla HPWCs with handy parking, payment is currently $25 at reception before plugging in. I highly recommend the Ceduna Foreshore Hotel for a meal.
Penong Caravan Park
This location has handy 32amp 3 phase outlet located in the centre of the Caravan Park, payment is a $10 service fee plus 40cents a kWh, the service fee includes the use of the facilities such as showers and camp kitchen. Penong is another example of friendly South Australian country people making up for the lack of government support emanating from Adelaide. A nice overnight stop.
Yalata
Yalata now has a dual cable 50kW DC charger provided by the RAA of South Australia. It is currently limited to 35 kW, however as most drivers would only add 20 to 30% to the battery this is a handy stop.
Yalata has a near new lunch bar/art shop with toilets, showers and a large shaded area.
The Nullarbor Roadhouse
Update December 2024: The NRMA have installed a solar/battery powered DC charger, it has 2 separate 75kW chargers. This charger has been hit and miss, you could be charged and back on the road in 45 minutes or charging off the 22 kW DC for up to 3 hours. Continually monitor your charging at the NRMA station as it may fluctuate and you may be better off unplugging and replugging the session.
Edit December 2023: There is now a 22 kW DC CCS2 charging unit in place courtesy of TOCEVA.
The 3 phase outlet is on the rear of the main building to the left hand side as you look from the road, payment is approx $30 via the Cafeteria. Add plenty of extra charge at this location as a coastal headwind driving west could leave you struggling to get the next charge point.
Border Village
Border Village is a better option for charging overnight from 15amp rather than relying on the 3 phase. As you may see from Plugshare comments Trevor is the go to person at this location, ask for him at reception and he’ll guide you around to the rear workshop. Charging is strictly limited to 20 AMP 3 PHASE, that’s okay if you have a model 3 or Y drawing 3 x 16amps but it’s also where the Tesla Gen2 UMC to 3 phase tail comes unstuck, charging at 20amps single phase is unnecessarily slow. Charging is complimentary in the hope that you’ll sit down for a meal or stay overnight. Roadhouse hours allow you still order food as late as 8.30pm AWST.
Eucla
This site is no longer allowing EV charging.
Mundrabilla
Update March 2024: This site has reverted back to the 3 phase option only due to power fluctuations. Check back in as Mundrabilla will be one of four sites receiving Horizon WA EV Network 50 kW DC chargers by end of 2024.
This charger is situated outside one of the motel rooms, payment is approx $25, management would much prefer charging in daylight hours or at least avoided between 9.00pm and 6.00am due to the electricity system they have in place.
Pro tip- Stand just inside the roadhouse doorway to gain Telstra reception.
Madura Pass
The good news is Madura has a crowd funded 22kW DC charger in the old garage next to the fuel bowsers, the bad news is that due to staff shortages the garage door is only open from 7.00am until 5.00pm (confirm with the roadhouse direct if planning to arrive out of these times). I would advise not to arrive in the late afternoon as at 5.00pm the power is switched off, the doors closed and the fuel attendant rushes off to serve food in the bar, such is life on the Nullarbor currently. Be aware that all but one of the staff at Madura are extremely friendly, unfortunately one has an allergy to Electric Cars and is best left alone. Payment is a donation to the RFDS. Payment Update Nov 2024: is now reported to be $2 per kWh.
Cocklebiddy
Update December 2024: 22kW DC charger now in place, do not unplug the 3 phase without the permission of management (there is no reason to unplug this charger). Due to a couple of drivers mistakenly driving off with the key there is a surety implemented to ensure return, this involves providing your licence, mobile phone or $100 until the key is returned. Payment required is currently $25.00 flat fee.
An easy 32amp 3 phase to find, right next to the large Eagles cage with a sign that says TV outlet. The sit down meals here are always worth a try. RFDS donation for payment.
Caiguna Roadhouse
Update December 2024: Thanks to the efforts of Jon Edwards and James Collins, this charger is now back online as at 13th December 2024. Due to user error this is currently offline, hopefully repaired by 20th December. It is important to follow the instructions for this charger as if does not follow the usual process most people are used to.
The first official WAEV Network DC charger is now in place and working. It is a 60kw unit that is currently on free vend. To start open the cover, press the start button and carefully follow the instructions. This charger is not associated with the roadhouse, for any issues contact Jon on the number provided.
The famous Biofil DC charger that was installed in January 2022 has been brought back to Perth for refurbishment before being deployed at another site, this 50kw unit is powered by a converted diesel generator that consumes used cooking oil from the roadhouse kitchen. Despite some difficulties with solidified fuel on cold winter mornings the Vegpod has served its purpose by encouraging the WA state government to extend the DC charger network across to the WA border. Payment is a $50 service fee plus cost for energy used, staff are required to start to unit. This charger can be temperamental so be patient.
Balladonia
At the rear of the western side of the main building is another crowd funded 22kw DC charger, the payment is $2.00 per unit as recorded on the DC chargers screen. You will need to go into reception first to get a key. Be patient and follow the instructions exactly or the whole 2 minute process will have to repeated. Be warned, don’t skimp on charging here because it’s $2 a unit and the next location is a flat fee for all you can charge, that method may leave you short of range and possibly stranded.
Fraser Range Outback Oasis
Update December 2024: Fraser Range is due to reopen this month. A perfect spot for overnight accommodation. Powered campsites available. 104km from Norseman.
Norseman
Edit December 2023: The WA EV Network 150 kW DC charger is now available, this saves considerable time for those contemplating the Nullarbor drive. The nearby showers (tokens available from tourist information centre) and toilets are unlocked between 8am and 6pm.
Rob and Robin have crossed the Nullarbor 12 times in total, 5 times in a Tesla Model S, 7 times in a Tesla Model Y and charged at each location multiple times.
Edit November 2023: It is now possible to make this journey using the WA EV Network 150kWh DC chargers at Merredin, Southern Cross and Coolgardie. Below is how the journey was made prior to the installation of these.
The drive towards Kalgoorlie is generally a little more difficult than the return journey due to Kalgoorlie being 450 metres higher above sea level than Perth. The extra 15-20kms range your car will consume heading east requires a bit of extra charging time along the way, not much but it should be factored in. Of course a strong tail wind or head wind will reduce or increase charging times. We know that by late 2023 Synergy will have installed multiple fast DC chargers at 2 or 3 sites along this route making the journey far more comfortable, until then it’s AC charging all the way.
The road – The highway between Perth and Kalgoorlie is mostly in reasonable condition but considering the importance of the Goldfields to the WA economy I believe it should be better. There are still a few sections lacking overtaking lanes and a few areas with poor drainage that create potholes easily, there are not many but keep a sharp out each side of Merredin. Don’t drive slow on this highway as you’ll just aggravate other drivers, 95 in a 100 zone is okay, keep in mind that most vehicles on this road are part of a business and don’t have time to sit behind a Tesla that didn’t charge enough at the last stop.
Perth GPO to Kalgoorlie is 593kms with 3 useful (and reliable) AC charging stops along the way, Merredin, Southern Cross and Koora Retreat. Most vehicles could get by with one stop at Merredin although I suggest you stop at all three to break up the journey. The overall trip will take the same time as AC charging speeds are all equal. Merredin is a friendly little town for a first time visitor but eventually you’ll want to keep moving. On the return trip to Perth I 100% recommend you charge at all 3, you’ll be none too pleased if you bypass a perfectly good charging option to find the next one being used by another EV.
If you’ve never driven this trip before I highly suggest you leave home early to arrive early, this way any unplanned hurdles won’t leave you crawling into Kalgoorlie after dark, hungry and tired. If you can get through Midland and into Mundaring before morning peak traffic you’ll set yourself up for a comfortable day, the end game is to be in Kalgoorlie before Sunset with your car on charge while you enjoy a well earned drink.
Merredin has two different useful charging locations, the most convenient one is the Tesla destination chargers behind the visitors centre, these are currently complimentary, don’t forget to pop in to the VC and thank the lady behind the counter for making a charger available. Update: Since this article was written 12 months ago, both charging sites have shown a lack of reliability, always browse Plugshare comments for latest information.
Merredin Visitors Centre
Southern Cross has a very robust 3 phase 5 pin outlet at the Oval, it’s currently available 24/7 and free to use. You will require a 3 phase cable such as a Juice Booster 2 or KHONS cable. A Gen2 UMC with 3 phase tail will work but only through 1 phase restricting your charge rate, these are okay for home use but personally I think they’re a very poor option for country areas. I’ve never known Southern Cross to be ICED or broken but still plan to arrive here with at least 100kms of range remaining, there’s currently no other 3 phase options in town. Edit: The Southern Cross WAEV Network charger is currently in place and may be switched on by early October, this will make the Perth to Kalgoorlie trip significantly easier.
Koora Retreat installed one of the states first Tesla destination chargers as a way of helping the EV community, the original owners have moved on due to ill health but the new owner is keen to continue helping EVs. Payment is a very reasonable 50 cents a unit via BSB, follow the instructions on the paperwork inside the charging cabinet and be generous, without these charging options very few EVs would have visited Kalgoorlie in the past 6 years. Be aware phone connection often drops out near Koora Retreat, combined with the lack of signs and difficult to spot entry it requires a sharp eye to locate. The best guide I can provide is the entrance is 69.5kms east of Southern Cross.
How to make the car charge faster? Go for a walk, be a tourist, have a long lunch, talk to people, download and edit some photos. Keep yourself occupied and it won’t be a drag.
Finally Plugshare is by far the best option for Western Australia, ABRP is just an extra assistance for those that may need it. And don’t forget: Always Be Charging, Always Bring Cables, Always Browse Comments and Always Be Considerate/Courteous.
The above question gets asked on a regular basis on Tesla forums and there’s no perfect answer, what I will say with certainty is an accessory that’s very useful for one Tesla owner could be completely useless for you and vice versa. As the Grail Knight says “Choose wisely”.
To focus this discussion I’ll break it down into 2 areas – Charging assistance and finally Exterior and Interior Accessories.
Charging assistance – Charging also breaks down in to two areas, Home charging and Public/Travel charging. The set up you need at home depends on the average distance you expect to drive per week and if you’re planning to make use of home solar or the Synergy EV plan that’s available between 11.00pm and 4.00am. If you wish to ask a question about a home charging set up on any TOCWA social media make sure you provide as many details as possible for a faster and more accurate answer. Public or travel charging accessories/cables is often determined by where you you expect to charge in public areas close to home and the locations and frequency you expect to drive in country areas. Sadly there is not yet one single charging cable to suit all occasions, the good news is TOCWA members get access to loan charging cables until you’re confident you know which cable suits you best.
Cables can be loaned or purchased outright from TOCWA.
Exterior and Interior accessories – There’s no shortage of businesses in Western Australia selling Tesla accessories such as after market wheels, paint protection, window tinting and much more, there’s also no shortage of Tesla owners who’ve used these services, the most obvious advice I can give you is meet up with one those Tesla owners that have had paint protection, window tinting or other product installed for more than 12 months, check the quality with a keen eye and ask lots of questions.
Some after market additions can be very useful over the life of the car, some can be a huge burden, take the time to make the correct decision.
Don’t forget TOCWA’s Ask Us Anything every Wednesday evening from 7.30pm for some useful advice on charging and accessories and/or check out some articles on this website.
A portable power pack (also referred to as a solar generator) is sold in a variety of storage capacities from 150Wh up to and beyond 2000Wh. At this stage they are generally very expensive in terms of dollars per Wh of storage, if you purchase a unit that fits your needs and plan to use it on a regular basis it’s a useful product, otherwise they’re a waste of money and battery resources.
A big gripe I have is many of the power packs on the market are advertised as being useful for recharging an EV, no doubt the larger units can charge an EV but making this part of a purchase decision is poor thinking. Why? A fully charged larger unit could potential add 8 to 10kms of range to a Model 3, handy in absolute desperation but with a Model 3 Standard having at least 330kms of range at 110kmh no one who adheres to the ABCs of EV ownership should be getting stranded. If you think you may be 8kms short of range, slow down by 5-10kmh, you may arrive 15 minutes later than planned but that’s better than sitting on the side of a road while trickle charging from a 27kg device that costs $2000 or more.
So how is a power pack useful- As I said if you’re going to use it on a regular basis away from home they can be very convenient, despite most cars having multiple 12v power outlets they’re never always close to hand, having the flexibility of multiple phone, iPad, Laptop and Camera/Drone battery charging outlets away from the car when a 240v outlet is too far away is fast and convenient, they’re also very handy keeping a portable freezer operating away from established power.
There are two main types of power packs, the larger ones have a built in inverter and one or two 240v outlets capable of running appliances such as TVs, power drills or kettles for short periods of time, the extra internals needed add to the purchase price and the overall weight. The smaller power packs rarely have a 240v capability so are generally less cost per Wh or storage. If you can get through a few days without a 240v outlet that makes your choice easier.
Testing a portable power pack
To run the test I purchased a Coleman 40Ah power pack as this was readily available at a wide variety of camping stores throughout Australia, it currently is the best value per Wh of storage and most importantly contains LifePo4 batteries. These are heavier but are more likely to survive the expected 2000+ cycles before storage capacity is down to 80% of original. The 40Ah power pack has 512Wh of capacity and could potentially power 8 devices at once.
Test one – See how long a 100% charged battery would last while cooling a 45-litre fridge/freezer down from 18C to -15C, this was done during the day in an outside but shaded area in temperatures between 23C and 30C. The pack supplied enough power to allow the freezer and the originally room temperature water containers to reach 0C within 95 minutes, this consumed 16% of the available battery. I stopped the test after 10 hours with the battery down to 5% and the internal freezer temperature -15C. The test was run entirely during daylight hours.
Test Two – See how long a 100% charged pack would maintain the fridge freezer at -4C. This test commenced at 8.05am and continued through two full days and one night, the maximum temperature during that time was 30.6C, the overnight minimum was 21.6C. I concluded the test after 35 hours with the battery level down to 4%.
Test Three – See how much charge my old fold out 100Watt solar panel can add to the power pack without shifting the panel to follow the direction of the Sun. Considering there was early morning tree shade and a small amount of cloud cover in the late afternoon the 80% added to the battery was very handy. The Coleman 40Ah power packs inbuilt MPPT was a significant advantage. A 120W solar panel or shifting the panel once during the day would have provided a 100% charge.
Test Four – Can the solar charging keep up with a Fridge/Freezer set at -4C? Yes, the F/F requires around 65% of the battery over 24 hours, the 100W solar panels replaced 80% during daylight hours.
To summarise: portable power packs can be a handy accessory if you purchase the correct size for the planned tasks and use it on a regular basis.
