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What size solar system should I get?
Installing solar is relatively cheap, when you consider that it pays itself off in 3 to 5 years. It will be cheaper overall to install the maximum now, than to try to upsize it in a few years, especially since you will probably only have one chance to get subsidy help. If you have the money or can use one of the government payment schemes, I suggest getting the maximum allowed 10kW system, with slightly more panels (see below). You also need to have enough unshaded roof space to install them. In the southern hemisphere, we aim solar panels to the north for maximum sunlight. A north facing room will produce a high peak of solar power in the middle of the day, when your demand is probably low. So, it’s typically best to place panels on east and west (or north east and north west) facing roofs to skew power to the beginning and end of the day, respectively. On our house, we have all of our panels on a north west facing roof. This skews our production slightly to the end of the day, but…
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Solar, battery and electrification — series intro
A few neighbours and friends have asked us lately for advice about solar panels, house battery, EVs etc. Here’s our real life experience, starting a series of posts on different topics. We installed solar and battery when we moved into our house (Emerald, Victoria) about two years ago. We already had an EV (electric car). This week, we finally got around to replacing our gas hot water with an electric heat pump. Next month we’re replacing our gas ducted heating with a multi head split air conditioning system. Overall, our solar and battery provide more electricity than we use. We’re also connected to the electricity grid so we can import when we need more, or export when we have a surplus. We aim to produce all the power that we need. On the rare times that we import electricity from the grid, our retailer bills us. More often, we export our surplus electricity to the grid, for which they give us a credit. Overall, we have more credit than debits, so we don’t have to pay anything. All…
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Heat pump installation
We finally got around to installing a hot water heat pump, to replace our gas hot water system. We were paying about $40 per month for our instant gas hot water (plus $40 connection fee). Now we’re paying nothing, because the heat pump is just using our excess solar power. Without solar, I estimate it would be costing us $8 per month to power it from the electricity grid. There are a few incentive schemes around to replace gas (or other old inefficient systems) with a heat pump. An installer will factor these into their quote. The subsidies can be significant. In our case, the total price was $4480, but it was reduced to $1650 for us to pay, after subsidies were subtracted. A hot water heat pump uses the same principle as an air conditioner (which is also a heat pump). It “pumps” heat from one side to the other. In this case, it pumps heat from the outside air into the tank of water. The basic physics is that when you compress air in a confined space, it gets hot, and when you expand…
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Final day at Everything Electric Melbourne
Starting and ending with Jack Scarlett. Test drives, a panel talk about road tripping, EV conversions, and a flux capacitor, some of the highlights.
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Snapshots from Everything Electric Melbourne
Some random shots from Everything Electric Melbourne today. After a few years in Sydney, this is their first showing in Melbourne. It’s noticeably smaller, but understandable for the first appearance. Interesting panel talks. Informative staff at product booths. Huge variety of test drives available, including self driving Tesla cars. A few food truck offerings. They need more undercover seating (from sun or rain). We recommend the falafel wraps.
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A $25k BYD Atto 1 is closing in on ICE prices
About $25k for a new BYD Atto 1. Wow. EVs are now approaching the price of comparative ICE vehicles. Unfortunately, BYD couldn’t get their Atto 1 prepped in time for the show, but they did have the Atto 2 on the floor (pictured). At Everything Electric Melbourne.
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Camper vans and EV utes at Everything Electric
Checking out the Farizon electric van, decked out as a camper. Also the popular BYD Shark electric ute (plus hybrid range extender), and some towing options. At Everything Electric Melbourne.
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A peek inside the Geely EV
Nice interior of the Geely EV, at Everything Electric Melbourne. So many EV options available now.
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A flipping, rolling cat robot at Everything Electric
Dancing, flipping, rolling cat robot at Everything Electric Melbourne was a crowd pleaser. No litter box!
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Goodbye Gas, helping homes electrify
Nice to see some services (like Goodbye Gas) available to help homes get off has, upgrading to electric. Better for health, monthly bills, and clean air. At Everything Electric, Melbourne.
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Two-wheel EVs at Everything Electric Melbourne
Some of the many scooters, motorbikes and e-bikes at Everything Electric Melbourne.
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Electric police cars at Everything Electric
A Tesla Model X and Kia EV6, I think.
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Behind the wheel of an electric big rig
Big wheels keep on turnin’, electrically! Trying out a big rig at Everything Electric show Melbourne
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An impassable bridge, a beautiful walk near Kurth Kiln
Not all routes are equal. We took the slightly longer map option to Kurth Kiln National Park, expecting we could take the shorter route home. But, no, some bridges are impassable. We randomly picked this spot for a walk, using the AllTrails app. It allows us to filter difficulty, duration, distance away, elevation, and monitor our walk along the way, even with no Internet connection in the bush. The information boards included the history of charcoal fuel production here, and the hurdles for vehicle drivers to overcome new fuel types, like petrol 😉. FSD (Full Self Driving) took us along the windy country roads without an issue, until the motorbikes behind our car brought out the biker in me. I switched to human driving, to push the bends more than the overly cautious FSD. FSD was also happy to drive back along the narrow dirt roads in the national park, but I switched to manual to minimise the corrugation jitters Then, back to our staycation B&B (which is of course, just our home in…
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Our car drives itself: FSD lands in Australia
Our car now drives itself! We choose the destination, and it drives all the way there, turning left, right, indicating, changing lanes, negotiating roundabouts. It’s amazing and boringly uneventful – a combination I heard called “bore-mazing”. Tesla released FSD Supervised in Australia a few weeks ago, for purchase ($10k). This week they also started offer it as a monthly subscription ($149 = $5 per day). We subscribed for one month to try it out. Yesterday I was picking up Amber from Melbourne airport, and decided to try FSD on the way. I paid the subscription through the Tesla app. It seemed to be instantly available, with no additional software download. I hopped in the car. It read my destination from my linked calendar. I pressed the FSD button. The car started reversing out of my driveway. At our street, it failed to figure out what to do, and started heading the wrong way down our no through road, over the grass. Francis was watching from the garage, keeling over with laughter.…
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Another weekend, another botanic garden
This used to be a quarry for blue stone. Impressive rehabilitation.
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A new Bunnings — with EV chargers, and sausages
New Bunnings in Narre Warren, complete with EV chargers. An EV Range Rover sucking up the electrons. We parked, walked in, smelled sausages, walked out, grabbed sausage in bread, and forgot why we came 😉. Cooked on electric barbecues, connected to 32A sockets, it seems. Now that’s planning!
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Marvin the mower draws a tourist crowd
It seems that Marvin (our Mammotion robot mower) is so famous that the paparazzi stop to take photos of him at work. This time, it was a group of tourists walking past, from Puffing Billy. Marvin carved his signature parallel lines in our lawn. I’ve recently set it to 35° from north, aligning all the sections of our lawn. It’s the little things 😉. A couple of weeks ago, I turned around the blades on his rotors. This is the only service I’ve had to do since purchase, about 15 months ago. Now that it’s spring again, the grass is growing fast. Marvin is mowing every week. Fully electric, no fumes or noise.
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Max the Mulcher tackles spring
Spring has sprung. Two problems to solve: 1. Big piles of branches from trimmed overgrown hedges (joint effort with neighbour). 2. Freshly weeded garden beds need a lot of mulch. Solution: Max the Mulcher. 2400W Electric RYOBI. Chomps through branches up to 4.5cm diameter. Produced over two cubic meters (2000L) of mulch so far. Meanwhile, Marvin the Mower mowing the neighbour’s front yard. All powered by the excess solar power from our roof. No fumes. Not much noise.
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A sneaky lunch at Tram Xpresso
Sneaky lunch at Tram Xpresso, attached to Mount Evelyn Garden Centre. I’m still getting used to finding trams in weird places. Fortunately, no hook turn here.
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The Tesla wouldn't open my door — for good reason
I tried to open the door, but the car said no, since it detected a car coming. Nice safety feature.
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Our Powerwall — one of a million deployed
Our home Powerwall battery is one of a million deployed so far. The Tesla app celebrated by listing the stats of our install, and the fleet as a whole. Our battery has saved us (and our neighbours via extension cords) from 13 days of blackouts, without any noisy smelly generator, or trips to refill it with petrol. Our solar system has generated 16MWh of energy so far, used by our house appliances, home battery, our car and exports to the grid. At an average ball park price of say 15c per kWh, that’s $2400 worth of electricity, with no ongoing running cost.
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Finally, the Dandenong Ranges Botanic Garden
After two years in the Dandenong Ranges, we finally visited the Dandenong Ranges Botanic Garden. Amazing to see in Spring. It’s a huge place. I think we covered only 20% of it. Parking seems to be extremely limited and unmarked, in a dirt section across the road, which led to highly questionable parking.
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No, my Tesla didn't cut off my arm
For those who might have seen “Massive Tesla Recall”, headlines: No, our car window does not cut off my arm 😉. The car has already updated to the latest software version, a few weeks ago, including the latest fix. I do find it annoying that it is referred to as a “recall”, since that implies that the car has to be returned for some physical fix. It is just a software update, which is handled automatically. Having the fault isn’t great, in any car. But having a car that can fix a fault while I sleep, is pretty impressive.
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Our great solar energy spill
We had a massive spill of solar energy spill over the past couple of days. All over our yard, roof and neighbourhood. Fortunately, there seems to be no toxic repercussions. All of the local wildlife seem to be unaffected. Our breathing is fine. We managed to soak a good deal of it up using the solar panels on our roof, and channel it into our car, battery and home, as you can see on the graph showing: Yellow: Solar production Red: Sent to our car, now fully charged. Green: Stored in our house battery, now fully charged, for use tonight. Blue: Used for our home appliances Grey: Exported to the grid, for other homes to use. Cost: $0 (well, actually we’ll get paid something for exports).
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A Dandenong Ranges walk and brunch at Olinda Deli
Back on home turf, a walk in the Dandenong Ranges. So much green. Brunch at Olinda Deli.
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First software update on our new Tesla
A few updates for our Tesla. All free, and automatic, via the first software update our new car has received. The music rave cave, with synchronised album colour and beat of the ambient lights is pretty cool. But the other updates are probably more practical.
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Silo art on the Mallee Highway home
August 10-11: We initially stumbled upon some silo art, then looked for more, on our way home from South Australia, starting along the Mallee Highway. Amazing.
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Last overnight stop, in Sea Lake
Part way through one of the Silo Art trails, yesterday, the sun was setting, so we booked a room at the next town, at the Sea Lake Motel. This is our final overnight stop before driving the remaining 450km to home, today. Last night, almost everything in this small town was closed. The motel stocks refrigerated meals in a vending machine, for people like us stopping in at the last minute. Great idea. We chose a curry, microwaved it in our room, but then realised that the used by date on the two packets was months ago, even though the used by date on the outer packet was fine. We decided not to risk it, and happily made a picnic tea out of our car travel food. We informed the host, just so they knew. It’s the fault of the food company, not the host.
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Bakery breakfast, and a coal-fed NRMA charger, in Wycheproof
Breakfast and coffee stop at this enticing bakery in Wycheproof. Nice place. The NRMA charger up the road conveys “welcome”. The banners on the fence next to it imply “as long as your electricity comes from coal or gas”, perhaps. Let’s Google it: https://www.google.com/search?q=wind+turbines+generate+intense+electromagnetic+radiation+true+or+false
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The world's smallest mountain?
I think I saw a sign on the way in: “The world’s smallest mountain”. It’s 42m above the surrounding terrain, and only 147m above see level. But, it still gives a good view of the surrounding countryside.
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The last Anzac slice, near Bendigo
Our last piece of Anzac slice lasted until the last day of our road trip. Range anxiety – averted. Just passed Bendigo, this view over the “valley of a thousand hills” seemed appropriate.
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Tesla to Uluru: an 8000 km recap
July 23 - August 11: We drove to the centre of Australia in an EV. Using the shortest range EV that Tesla currently builds. If you like a long drive, the scenery is spectacular and sprawling. Wandering the sand dunes and spiniphex plains is very peaceful. Sunsets and Uluru are otherworldly. The charging infrastructure in Australia is getting better, but the drive up the Stuart Highway isn’t quite there yet. Thanks to RAA / Chargefox and The NRMA for your work so far on chargers along the Stuart Highway. We need improved reliability. We luckily dodged a few outages. Pimba lost power for a couple of days that made the EV charger unusable, but it fortunately worked during our time there. Glendambo (between Pimba and Coober Pedy) has only a 7kW charger that runs off the town’s diesel generator, and would not initially start, both times we passed through. The NRMA charger at Eldunda Roadhouse, in Ghan, died a couple of days after we visited. But, there’s almost always a plan B for an EV.…
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From the Barossa to a Singapore chat in Tailem Bend
We plotted a rough course from the Barossa Valley towards home. First stop at Palmer Lookout, then Tailem Bend, home of a raceway and drag strip, I believe, for “the best coffee in Tailem Bend” from Revival Cafe. At the Tesla super chargers, a couple from Singapore chatted to us about travelling. They hired their Tesla Model Y in Melbourne, drove through South Australia, and are next headed to Sydney in NSW. They have previously hired an EV from Perth and driven down to around Esperance. I told them I’d post their photo to encourage Australians to road trip in EVs in their own country.
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Lunch at Demi's Kitchen in Pinnaroo
We took the Mallee Highway to exit South Australia, stopping in Pinnaroo for lunch. Country town, after 2pm, on a Sunday, not much was open. Typing “lunch” into the iPhone’s Maps app, and filtering for “Open Now”, showed Demi’s Kitchen, a few blocks from the center of town. Time for a wander, through the town green. Cute food truck style caravan in her front garden. We took our “super veggie fried rice” and “curry vegetable dumplings” down the road to the Pinnaroo Wetlands park, around the corner from the tractor dealership. All in all, a pretty nice town. Glad we had the chance to explore.
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A sixties throwback at the Lyndoch Motel
Our home for a couple of nights at The Lyndoch Motel, in the Barossa Valley. Super cute sixties retro theme. The plumbing might need an update, however. We hear the neighbour’s drain through our own. White sneakers from the frunk still have a shade of red earth from the outback.
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Lunch at Maggie Beer's Farm Shop
Lunch and a stroll at Maggie Beer’s Farm shop in The Barossa Valley.
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Numb Skulls at the Barossa Sculpture Park
We were exploring the Barossa Sculpture Park, when randomly the Variety Bash cars turned up, including the “Numb Skulls” with the skulls on the boot, whom we met a week ago in Glendambo, on our way to Uluru. Big country, small world.
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Topped up in Glendambo — return trip
Having topped up in Glendambo (see our previous post), we finally made it to Pimba. “Let’s check out Woomera first” – so we turned left and kept driving. The “Pimba” showcase sign featured a train crossing. Living up to the promise, we were immediately stopped at the rail crossing by a long freight train headed south along the Ghan line. At about this point we thought we maybe should have charged up before going exploring, but 10% seemed fine. We followed the GT to overtake the road train, and then turned off into Woomera. We did a lap of the town, with a stop by the rockets and relics of years gone by. This used to be an active RAAF base, with a mixed history of rocket testing and sadly affected lives from radiation exposure. We only saw about three people in the town. We headed back to Spud's Roadhouse in Pimba, plugged into the RAA/Chargefox fast charger, used the facilities, bought a chocolate bar, drank some tea, then decided to keep driving, to stay in Port Augusta tonight.
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Green lawns and EV chargers at Port Augusta
Leaving the outback behind, we stayed last night at the Standpipe Golf Motor Inn, in Port Augusta. This is the first green lawn we’ve seen in many days. Part of the reason we picked this place is because their online profile says it has EV chargers on site. In our booking comment, we mentioned that we’d want to use the EV charging, since that often helps a host allocate a nearby room. Shortly after, they rang us to say that the chargers were out of action. According to PlugShare, they’ve been offline for a long time. Please get them fixed or remove the listing from your booking profile. In the morning, we crossed the river to the esplanade to grab some breakfast supplies. While parked, we plugged into the RAA/Chargefox EV charger. Very convenient, next to the shops and foreshore, Moreso than the Tesla chargers up the road, which we used last time. We also gave a brief interview to Nick from Yahoo News Australia, about our recent EV charging experience in the outback. I hope the…
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Hatch-breakfast on the way to the Barossa
Port Augusta to Barossa Valley, stopping for a late breakfast from the hatch of the car. The fridge is conveniently located with butter for our croissants and milk for our cereal. The mountains to the west looked interesting, so we diverted off the main road through endless green fields. Such a contrast to the endless red earth from a few days ago.
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A late lunch at Monkey Nut Cafe
Late lunch at the Monkey Nut Cafe (Kies Winery) in the Barossa Valley. Kitchen had closed so we had to make do 😉 with a grazing board, coffee and scones, all to share. Very friendly staff. Beautiful place. The age old battle of cream first vs jam first, continues.
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Dinner at The Lord Lyndoch
Dinner at The Lord Lyndoch, in The Barossa Valley. Charging: Oh, look, they have EV chargers in the car park. Let’s plug in while we’re having dinner. What a great idea. Thank you RAA/Chargefox.
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Vineyards from the Monkey Nut Cafe
At Monkey Nut Cafe, in the Barossa Valley, with endless vineyards in the background.
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A wary dusk drive into Port Augusta
In today’s drive, from Coober Pedy, this was the final leg from Spud's Roadhouse, Pimba, south to Port Augusta. We normally avoid driving at dusk, due to animal activity on the roads. We spotted many sheep along the road from unfenced properties, and a couple of cows. Just as we were leaving Pimba, a kangaroo jumped out on the other side and stared at us. It was the only alive kangaroo we’ve seen out here this trip, probably because we don’t usually drive in the twilight hours. The sunset put on its usual glorious display, tempting me to stop to take photos, but we drove on. A police car pulled over a speeder heading north. Might have saved their life, or at least a wrecked car. We drove on slowly, far behind a road train. I wasn’t game to overtake into possible oncoming wildlife. We had the Tesla on Autopilot, so it drove while we watched for movement on the sides. The maximum follow distance setting is 7 (as in the photo), but that’s too close at speed, or behind a truck that can…
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Stuck in Glendambo with the local hero (Chris)
As you can probably tell by the first photo of the local hero (Chris) resetting the EV charger, we stayed a lot longer in Glendambo than we had planned. Similar problem, now on our way south from Coober Pedy, as we had a week ago during our trip north.
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Breakfast under Kata Tjuṯa
Kata Tjuṯa is even more huge than Uluṟu. You can tell from the relative size of each in the distance from each other. But, of course, Uluṟu is one whole rock. We set up breakfast out of our camp fridge and bags, at Kata Tjuṯa. We didn’t see any of the dingos, warned by the signs. Then a few short walks. One of the other visitors had just driven from WA, and asked where the next petrol station was. I laughed and told him that of all the people he could have asked, I was probably the least suitable, driving an electric car. But I happened to know that there is one back at Yulara, about 40km away. He seemed relieved that was less than the fuel range he had remaining. We discussed the high cost of fuel out here, at around $3 per litre. He asked about our electric car. I mentioned that I’d noticed that the toilet block in the car park had a power point, next to the hand dryer. In an emergency, I could probably use that, powered by the solar on the roof and I think backup diesel generator.…
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Walking the shaded trails of Uluṟu
August 2,3: Even though it’s fairly cool now, in winter, the sun can still pack a punch. This waterhole is understandably sacred to the traditional owners, being a water oasis in the desert. The walking trails are closed if the temperature hits 36°C. Most walking trails seem to have heat warnings, shaded seats and water supply near the entrances. While we were out walking, I set the Tesla to enable cabin overheat protection, and lowered the threshold to 30°, because I had some perishables in the car.
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Sounds of Silence: dinner under Uluru's stars
Last night – magical sunset over Uluru and distant Kata Tjuṯa, while enjoying canapés, buffet dinner, drinks in the middle of the outback. To top off our Sounds of Silence experience, a star talk – a mix of astronomy and traditional interpretation. Fascinating and informative. Loved the sky pointer.
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Driving around, and around, Uluru
August 2-3: It’s enormous. Photos don’t really capture the size. Amazing experience. The colours, the scope, the remoteness, the contrasts, the culture.
Formerly: Tesla Tripping
Come along on our EV road trips around Australia and Europe, and follow as we progressively electrify our home in Emerald, Victoria.
Join us on the road. We set off in late 2022 and drove eastern Australia in our Tesla Model 3 — Sydney, Dubbo, Armidale, Brisbane, Cape Tribulation, then down through Queensland and back. We've since upgraded to a Model Y.
We've kept exploring — Uluru, the Snowy Mountains and Gippsland, and a longer run through Europe in 2024. There's plenty more on the map, so come along for the next leg.
At home in Emerald, in Victoria's Dandenong Ranges, we're progressively electrifying everything: rooftop solar, a home battery, a hot water heat pump, air conditioned heating and cooling, and EV charging straight from the sun. We're going fully electric, off the gas.
Got questions, or insights of your own? We'd love to hear them — please drop a comment on any post.