Saturday, 1 September 2018

Domestic energy monitoring: Is a home battery worth it?

Cross posting a Twitter series I've started onto the blog.

I love the idea of a home battery to connect to our PV system because I'm a sucker for new technology, even if I know they won't be economic until about 2030. As a way of delaying the purchase by a minimum of 12 months I've decided to collect a year of data 1/

The measurements are complicated by a) getting good data, b) because we already store some electricity in the form of hot water via our power diverter and c) because I don't know what I'm doing. C is without doubt the biggest problem. 2/

I'm going to ignore peak loads, that can be my reason for putting off a purchase in year two 3/

June 2018: Average import of 3.5 kWh per day, stored 4.9 kWh as hot water and exported / could have stored 6 kWh in a battery. Max import on any day 5.3 kWh. Conclusion: A battery could have made us off grid. 4/

July 2018: Average import of 3.6 kWh per day, stored 4.6 kWh as hot water and exported / could have stored 5.8 kWh in a battery. Max import on any day 5.6 kWh. Conclusion: A battery could have made us off grid. 5/

August 2018: Average import of 4.2 kWh per day, stored 4.1 kWh as hot water and exported / could have stored 2.9 kWh in a battery. Max import on any day 6.5 kWh. Conclusion: A battery could have met 70% of our needs. Could have been off grid if we stored less as hot water. 6/

Sunday, 11 March 2018

The Big Half: Build Up and Race Notes

Herbert and my Big Half Medal
Prior to competing in the Berlin marathon back in 2015, running had been a big part of my life for four / five years. I've been running reasonably regularly since then, but nowhere near the same level of intensity. At one time a 50 mile week would be easy and now it feels like something that is unachievable!

I was happy to reprioritise other things in my life (house building, work & family), but at the same time I used to get a bit upset and how far my times had tumbled. Last year when I saw the Big Half announced I decided that it was finally to set myself a goal and get a race in the diary.

Even with a goal in mind, I still let my training drift as the race was a long way off, until the start of this year when suddenly it wasn't any more! At the start of January I put together an eight week training plan together for myself and have actually enjoyed the structure. I could no longer skip a run because "I was feeling a bit tired" or "I didn't fancy running in the rain".

I knew I had to be realistic and that getting close to a PB wasn't going to be remotely possible as eight weeks wasn't long enough to build a base, some speed endurance and taper. Racing the Hagley Park Run while I was in NZ gave me a confidence booster that I should be able to achieve something in the 82 - 84 minute range.

I started race day nice and relaxed. Bumping into fellow club mate John on the start line we decided to run together as we were targeting for approximately the same time.

0 - 5km
We settled into a nice pace pretty quickly (which surprised me as I hadn't done any training at target pace), and despite quite a bit of weaving round slower runners settled into a rhythm. I could feel my breakfast sitting in my stomach. I'd eaten three hours before the race, but that obviously hadn't been enough time to digest it fully.

Around 4km I was beginning to feel that it was a bit quick and started thinking I was going to have to tell John I needed to back it off a bit as I didn't think I'd be able to make it to the end at the current pace. However, around the 5km mark I started to feel ok again.

6 - 10km
Somewhere around the 6km I started to pull away from John slightly and found myself with a group of runners I recognised from the Assembly League, including a very good female runner called Claire. I ran with them for a bit and then started to ease away from them. I knew I was probably going a bit quick, but I was feeling good at that stage so decided to stick with it.

During this phase of the race I also passed a couple of other Kent runners, Matt and Rowan, who would usually beat me. I probably should rain this in.

11 - 15km
I don't remember much about this phase of the race. Somewhere around the 13km marker Claire came onto my shoulder, but then dropped back again.

I was trying not to be too negative, but at this stage of the race I could tell my lack of speed endurance / general training was going to catch up with me and I'd struggle to maintain this pace to the end.

16km - Finish
As predicted I detonated in this phase of the race. I was trying to keep myself positive and tell myself that it was only a Parkrun distance to go (even though it was further) and also not to look at my watch. In the past, even though it has felt like I've slowed to a crawl, my watch has told me it isn't nearly that bad. If I didn't look I could tell myself I'd barely slowed!

I started to feel a blister on my right heel. Do I stop to adjust my sock? No.

At 18km I received a huge cheer from club mate Alison. It was brilliant, even if I didn't feel as good as I was told I looked. It was at this stage that I started going backwards in the race and I was definitely the one being overtaken. I could also hear lots of "go Claire!". I didn't look round, but I knew she must be close.

Keep going, it's not far.

In the final 200m John came onto my shoulder, he'd clearly run a lot more even race than I had and had now caught up with my. I put in a sprint finish and managed to beat John by around 5m.

I finished in 1:23:17. I was 396th out of 11,598.

The data from my watch is here.

The official results are here. With some fun visualisations of the data here.

Saturday, 10 March 2018

Super Thai food: Supawan, Kings Cross

I recently read Marina O’Loughlin's review of Supawan, and like many other people I suspect, decided I'd like to try their Thai food for myself. A catch up with my friend Ed last night provided the perfect opportunity.

Marina was universal in her delight at Supawan. We had two awesome dishes and two a bit more average, although the highs definitely outweighed the lows.

First, the highs. The neua yang (grilled beef) is described on the menu as coming with a grounded rice and mint dressing. What they didn't mention on the menu was the amazing sauce that had us both spooning it over our rice to make sure we ate every last drop.

The second excellent dish was the Thai squid (pictured). At first glance it looks like any other deep fried calamari, but the chili and tamarind coating took this squid to a whole different level. I could have very easily eaten another plateful.

The two dishes that slightly missed the mark were two staples that I love ordering on my visits to Thailand. The first was som dtum (papaya salad). In Thailand this salad is ferociously hot and it is a dish that just doesn't work without chili and our just didn't have enough. Phakbung fai deng (stir fried morning glory) universally comes in tasty garlicky sauce, but this one was just a little bland and without enough punch in the sauce.

The beef and the squid were definitely enough to make me want to go back. Hopefully I find some more highs from the menu. At £25 a head it was excellent value and our lovely server even tolerated my poor Thai.

Oh, and I'm pretty sure the bathroom tiles are the same ones as we have in our bathroom too.

38 Caledonian Rd
Kings Cross
N1 9DT

Saturday, 3 March 2018

Summer in Scotland: Adfern and surrounding area

Neolithic burial mound in Kilmartin Glen
For the final few days of our time in Scotland last summer we stayed at a B&B in the small community of Ardfern with a rather eccentric host (who has since sold the B&B). Here are some of the highlights of our time exploring the local area.

One of the first and most memorable things we did was a guided walk of the neolithic (mainly burial) sites in Kilmartin Glen. The guided walk started and ended at the Kilmartin Museum and we spent a couple of hours being guided round the glen by some very friendly locals. The glen is packed with incredibly well preserved neolithic remains.

I can't remember many fact from the walk now, but I do remember enjoying it at the time. They take a limited number of people on the walks and regularly hit capacity so it is worth getting your name onto the sign up sheet early in the morning and then coming back for the walk in the afternoon.

Becks disappearing into a burial mound
Not to far from Kilmartin is the small settlement of Crinan. We visited twice, once during the day to go for a walk along the canal and then we returned in the evening for dinner in the seafood bar at the Crinan hotel which is well known locally as one of the best spots in the area for seafood. Having ticked langoustine off my list in Islay, this time I ordered a plate of scallops which was another item on my holiday check list.
Scallops at the Crinan seafood bar

Knapdale Forest
Taking advantage of the long summer days up in Scotland we stopped for a walk in the Knapdale forest on the way home from Crinan. The forest is the site of trial to introduce beaver colonies back into the wild in Scotland. We didn't spot any of the beavers, but did see some of their dams and had a pleasant walk round the forest on some of the trials.
At Arduaine gardens
On another long day out and about we started of by looking round the Arduiane gardens (lovely, but we were a bit out of season) before heading up to Oban. Compared to the rest of our trip Oban was tourist central with lots of overseas visitors around. Oban is clearly a tourist hub and a gateway to some of the outer islands.
Lobster in Oban
We had lunch at Eeusk (lobster, the final tick on my seafood wish list)  on the waterfront and a quick look round the centre of town before jumping into the car again and heading to Easdale island, a delightful, if slightly odd experience. 

Wheelbarrows Easdale
The tiny island of Easdale can only be accessed by a small ferry which only takes foot passengers. When you arrive on the island, the first thing you see if an assortment of wheelbarrows that the locals use to transport their shopping from the ferry back to their houses.

The island is covered in abandoned slate mines and was clearly a hub in the activity in its day. The only thing to do on the island is to have a walk around some of the abandoned mines and through the small settlement near the ferry.
Abandoned slate mines on Easdale
The island was very idyllic but it must be a tough live living on the island, exposed to the weather and only able to access your home via a small very. I suspect everyone that lives there must do it because they love the island. 
Bridge over the Atlantic

Saturday, 20 January 2018

Summer in Scotland: The Isle of Jura

Becks looking towards Lagg
My favourite day of the holiday was the one we spent on Jura, which is just a short hop on the ferry from Islay. It would be fair to say that there isn't much to do on the island apart from drink in the scenery, but oh what scenery it is.

There is only one main road on the island and we spent the day driving as far north as we could (the top of the island is private land), before turning round and retracing our steps in time for a ferry back to Islay.
Inverlussa Bay
The furthest north we went was to the inlet of Inverlussa. In between the rain showers we managed to go for a walk on the beach and a visit to a converted horse box, which is now a make shift café. One of the locals puts a freshly baked cake into the horse box each morning along with a couple of Thermos flasks of hot water. You can make yourself a drink and enjoy a slice of cake and leave some money in the honesty box when you are done.
Tea on the beach
We were thinking about taking on part of Evan's walk, but the wind was howling a bit too much for us. Plus it looked quite a lot like rain....
Evans Walk
No visit to Jura would be complete without popping into the distillery. We'd missed the daily tour, but one of the people working in the shop kindly took us into the distillery to see the stills and also to the barrel room. Once back in the shop I asked if I could do a tasting and much to my surprise they don't do paid tastings but they were very happy to give me a free dram instead!
Jura distillery

Saturday, 13 January 2018

Summer in Scotland: The Isle of Islay

Portnahaven on Islay
Islay has to be the most famous whisky producing venue in the world. The more attentive readers among you will notice a complete absence of whisky in this post, but never fear I have a dedicated Islay whisky blog coming up!

On our first day on Islay we headed down the western side of the island. Our first stop was at Port Charlotte where we visited the Islay National History Centre and the Museum of Islay life, both of which were charmingly stuck in a bit of a time warp but interesting to look round none the less.
Machir Bay
After Port Charlotte we headed to Portnahaven (top photo) at the tip of the western peninsula which is a quaint, and exceedingly quiet, little fishing village. On the way home we stopped for a walk on the almost endless beach at Machir Bay.
Langoustine at The Lochside in Bowmore
Our best meal of the holiday was at The Lochside Hotel in Bowmore. From the outside it looks like a slightly rough pub, but looks (or my prejudice) is utterly deceptive as inside is a modern bar and a large dining room looking out to sea. I ordered an enormous place of sweet langoustine that I enjoyed devouring and Becks had some equally excellent scallops. We were lucky to get in without a booking, so make sure you reserve a table if you are in Bowmore.
Highland cow on The Oa
While on the island we also did a walk round The Oa peninsula which is a huge RSPB nature reserve. The reserve is home to the American Monument which commemorates two troop ships that were sunk in 1918 during WWI. Unsurprisingly we saw quite a few American tourists making a respectful visit to the memorial.

During our walk I took the above picture of a highland cow which made it to the final of the photography exhibition held by the Islay Book Festival!
American memorial on The Oa
Becks at the lighthouse near Port Ellen
In the afternoon of our walk round The Oa, we also walked around the headland from Port Ellen to beach known as the 'Singing Sands' (below). The sun came out while we were at the beach and it looked almost tropical, but looks can be deceptive as the water was absolutely freezing! I lasted a matter of seconds in the sea, but did manage to find a shallow rock pool which had been warmed by the sun and made for a much more pleasant paddle.
Singing sands
On the blog I generally follow the principle that if you can't say something nice, it's better not to say anything at all. However, I'm going to break my own rule to say that I was unimpressed by our stay at The Harbour Inn in Bowmore. The staff were lovely, and the breakfasts were very good, but the rooms were just not up to standard. The impractical layout and the fact they were a bit tatty round the edges were a minor annoyance, but worst by far was the fact the mattress was shockingly worn out and sagging, completely incompatible with a good nights sleep. If you are thinking of staying check they've replaced the mattresses.
Port Ellen beach

Sunday, 7 January 2018

Summer in Scotland: The Isle of Arran

Machrie Moor standing stones
Back in the summer we spent ten days travelling round Scotland, starting off with a couple of nights on the Isle of Arran.

On our only full day in Arran we did a lap of the island in our dinky little hire car. We started off by visiting the standing stones at Machrie Moor, a neolithic site with multiple sets of standing stones within a relatively small area. We had the area almost completely to ourselves and saw lots of pink foxgloves on the walk to and from the stones.
Pink foxgloves
Continuing round the island we saw a new distillery being built (which we learned the following day was owned by the Arran distillery) and then stopped for a walk along the beach in Whiting Bay. We parked opposite the Arran Art Gallery and decided to pop in before we continued our drive round the island. I didn't have much hope for the gallery, but it was actually really good with lots of pictures and prints that we wanted to buy. We ended up buying four pictures that the shipped back to London for us at reasonable rates. I'm pleased to say we still like the pictures several months on!
Arran distillery
On our final morning on Arran we took the tour at the Arran Distillery. Having tasted one of the first bottles that the distillery produced I have to say that I don't hold their whisky in particularly high regard. They seem to be doing really well so you probably should take my opinion with a pinch of salt! Their tour was very interesting and they gave me a dram to take away (which I still haven't tried).
Copper stills inside the distillery
The distillery make a big thing about being independent and making non-peated whiskies, so it gave me a wry smile to learn that the distillery we'd seen under construction was owned by them and was being set up specifically to make peated whisky.

Lochranza Castle
From our short time in Arran, I'd say the food was a bit mixed. We had a nice evening meal at The Stag's Pavillion, but the most pleasing surprise was discovering The Sandwich Station. They make really good sandwiches on locally baked sourdough bread and using interesting local ingredients. I think the sandwich bar would holds its own in any city in the UK and was not the dry white bread and soggy lettuce I was expecting!
Lochranza sandwich station
One of the strangest things about Arran, in a nice way, was the number of red swings that were dotted around the island in completely isolated locations. Why build a swing where there are no nearby houses to make use of them?
There were swings all over Arran
We left Arran on this small ferry heading towards the Isle of Islay.
Leaving Lochranza by ferry