Checking in on our Battery Savings

When I last wrote about our Solar Battery Savings, we had just moved onto a battery charge schedule which involved two daily grid-charges. The underlying idea being that this should help to unlock additional savings by shaving both the morning and evening price peaks.

Aside from occasional temporary changes during Octopus Power-ups, the schedule has remained the same for a little over a month, so I thought it was worth reviewing how it has performed in that time.

In this post I'll talk about the savings performance delivered by our solar battery as well as possibly contributing factors such as fluctuations in energy prices and our usage patterns.

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Building a hard pelmet for a bay window

Bay windows give the perception of adding quite a bit of space to a room. In a bedroom, they allow furniture to sit a bit further back than it otherwise could, leaving more space for the occupants to stumble about in.

We've got a small unit sat in the bay, with the bed placed against the opposite wall: this layout allows for easy access to both sides of the bed, making the best possible use of the space that's available.

The one problem with this arrangement, though, has always been the curtains. Although they're heavy, lined blackout curtains, they do let a lot of light creep in around the top.

Photo of our bay window curtains

The windows have a thick frame, which the curtain pole mounts have to reach out beyond, resulting in there being more than enough space for reflected light to work its way upwards and into the room.

The effect in summer, is that at about 4am, any possibility of sleep is ended as a result of the room being flooded with sunlight.

AI generated cartoon showing a calm sun outside the window at 03:59. At 04:00 it's a burning fireball trying to climb through the window. Being AI generated, the feed look wrong and the sun's hand has somehow gone through the wall

Things are a little better in Winter: the sun's assault starts later (if it even bothers to show up that day), but the room ultimately gets similarly illuminated.

In order to help address the issue, I decided that we should install a pelmet (for the Americans, that's either a "Box Valance" or a cornice) over the curtains to block the path of those uninvited rays of sunlight.

There was one problem with that idea though: bay windows tend not to be uniform in size. In fact, even finding and fitting curtain poles tends to involve entertaining some kind of bespoke arrangement.

Clearly, buying and quickly fitting something pre-made was out and I've had to make my own.

In this post, I describe how I went about constructing and upholstering a simple hard pelmet for our bay window.

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