Skip to main content Skip to footer Home battery storage fitted across Peterhead and AB42, from £3,500 with 0% VAT. Free survey and a fixed written price before you commit to anything. Most people here assume a battery is something you bolt onto a solar system. Since February 2024 that has not been true, in the tax rules or in practice. A battery on its own, charged overnight when electricity is cheap and emptied through the expensive part of the day, is now a zero rated installation in its own right.
Granite terraces near the harbour with chimney stacks throwing shade across half the slope. North facing pitches. Upper flats where the roof is not yours to fit anything to. Conservation area frontages. Every one of those rules a household out of solar, and every one of them used to rule the household out of storage as well, because a battery was treated as an accessory to panels rather than a thing in its own right.
That is no longer how it works. A battery does not care which way your house points, whether the sun is out, or whether you own the roof at all. It only cares what time of day you use electricity. Charge it overnight when a unit costs roughly 8p, run the house on it through the day instead of paying roughly 30p, and the saving arrives whether the weather cooperates or not.
Which is why this page is built around the three things that actually decide whether storage is right for your house: the tariff maths and its two catches, what happens on the night the network goes down, and where in a Peterhead house a battery is allowed to go. If a battery is wrong for you, we would far rather say so at survey than fit one that never cycles.
Half hourly meter readings are what a battery is actually sized against, not a round number that sounded good. Systems designed, installed and commissioned by Steven Watt, holder of the City and Guilds Level 3 Award in the Design, Installation and Commissioning of Small Electrical Energy Storage Systems, under our NICEIC approved contractor status and SELECT membership.
Before then, a home battery only got the zero rate if it went in at the same time as solar panels or another qualifying energy saving measure. Fitted on its own it was standard rated, and that 20% was usually enough to kill the idea. HMRC then extended the zero rate to cover standalone battery storage: a battery with no panels at all, retrofitted to an existing home, charging from cheap overnight grid electricity. It also covers a battery added to an array that went up years ago, and a battery installed alongside new panels as before. Hardware and labour, treated as a single supply.
That relief runs until 31 March 2027, and reverts to 5% on 1 April 2027. There is no VAT to add to any battery price on this page.
A battery pays you in three separate ways, and only two of them are money. Most pages blur them into one payback figure. They behave completely differently, they apply to different households, and you should know which ones apply to yours before you spend anything.
Charge overnight at roughly 8p a unit. Run the house on it through the day instead of paying roughly 30p. This works with no solar panels whatsoever, and it is the pillar this page is really about.
Applies to: anyone who can get onto a time of use tariff. Read the two catches below before you assume that is you.
Without storage, a summer afternoon's surplus goes to the grid for about 14.5p. With storage it stays in the house and saves you about 24p that evening. The battery is not generating anything. It is moving units from the cheap column to the dear one.
Applies to: anyone with panels already, or fitting them. See the solar page for the full worked example.
This one is not money, and we will not pretend it is. It is the difference between a normal evening and a cold dark house. It also does not happen automatically, which is the part almost nobody in this trade tells you before you have paid.
Applies to: anyone on this coast who remembers 2021. There is a whole section on it below.
Time of use tariffs price electricity by the hour. Cheap in the small hours when demand collapses, dear through the day. A battery is simply a device for buying at the first price and using at the second.
| Line | Working | Cost |
|---|---|---|
| Demand met from the battery | 8.5 kWh delivered per cycle, 300 useful cycles = 2,550 kWh | — |
| Overnight electricity to store it | 2,772 kWh at 8p, allowing 92% round trip efficiency | £221.76 |
| The rest of the year's demand | 950 kWh at the 30p day rate | £285 |
| Total on a time of use tariff | with the battery working properly | £507 |
| Same house, standard flat tariff | 3,500 kWh at 24p, no battery | £840 |
| Annual saving | tariff shifting alone, no solar involved | £333 |
An illustration on stated assumptions, not a quotation. Your saving moves with your usage, your tariff and how consistently the battery gets cycled. We model it properly against your actual annual consumption at survey rather than handing you a generic number.
The arbitrage argument above is real. It also comes with two conditions that decide whether it works in your house, and neither of them appears on a competitor page.
The headline rates come from tariffs like Intelligent Octopus Go, at around 7.5p in an 11:30pm to 5:30am window against a peak averaging about 32p, checked in February 2026. Eligibility is an account with that supplier, a half hourly smart meter, and a compatible electric vehicle or smart charger. A home battery on its own does not qualify you.
The good news, if you do have an EV: during that overnight window the cheap rate applies to the whole house, not just the car. Which is why the households that do best out of storage in Buchan are the ones that already have a charger on the wall. If that is you, you are most of the way there already. We fit EV chargers in Peterhead too.
Roughly 30p to 32p against about 24p on a standard single rate tariff. That is the trade. You get the cheap window by accepting a dearer day. So moving onto one of these tariffs and not shifting enough load leaves you worse off than when you started.
This is where a battery stops being a gadget and becomes the thing that makes the tariff work. It is also why we ask for a year of your actual meter data before recommending a size. Fitting a 15kWh battery to a household that cannot cycle it is a very expensive way to store nothing.
The honest bottom line. At £3,500 to £5,000, a saving of around £333 a year is a ten to fifteen year payback on tariff shifting alone. So no, a battery is not primarily a payback purchase at 2026 prices, and anyone telling you it clears itself in five years is selling rather than advising. What it is: a way to cut a bill by roughly a third, to stack on top of solar if you have it, and to keep the house running when the network cannot. Stack all three and the case is genuinely strong. Rest it on one and it is thin. We will tell you which one you are.
This is the single most misunderstood thing about home storage, and on this coast it is the one that matters most. Storm Arwen is not a distant example. It landed here.
Nobody can promise you that will not happen again, and we are not going to sell resilience as an investment return. But if you live on this coast and you have decided a battery is worth having anyway, then whether it works during an outage is a decision worth making deliberately rather than discovering later.
G99, the engineering standard that governs how your system connects to the network, requires a grid tied inverter to disconnect the moment the mains disappears. That is not a fault or a manufacturer's shortcut. It exists so that your battery cannot push electricity into a dead line while SSEN engineers are working on it. So the default behaviour of a home battery in an outage is to switch itself off, however full it is. Ask any installer quoting you what happens to your system in a power cut. If the answer is vague, they have not specified one.
An EPS, an Emergency Power Supply output, with a relay that physically isolates part of your house from the grid and lets the inverter create its own supply inside that island. Changeover is typically 10 to 20 seconds, so you do notice it happen. An EPS output is limited, usually in the region of 3 to 5kW: lighting, the fridge and freezer, the router, phone charging, the boiler controls. Not the shower and not the oven.
Backing up the whole house is a different and larger job, needing more storage and a more involved installation. Both are chargeable options rather than something included by default, and both are priced after the survey once we know which circuits you actually want to keep alive. What we will not do is let you assume you have backup when you have not bought it.
Storage is its own discipline. There is a separate Level 3 award for it, and it is the one that matters on this page rather than a general electrical ticket.
Anyone can claim qualifications. We will show you the certificates. Click either image to view the original document.
Read the first line of that list again, because it is the whole reason this page talks about PAS 63100 and enclosure limits rather than payback slogans. Design, installation and commissioning of small electrical energy storage systems is a distinct award, and it is the correct one for the work.
Every installation we complete is fully MCS registered through our Q-Smart partnership. Q-Smart is a Competent Person Scheme. Faithful Spark Electricians carries out the installation and Q-Smart issues the MCS certificate, so your system qualifies for the Smart Export Guarantee.
On a battery only installation there is nothing being exported, so SEG is not the point. It becomes the point the day you add panels, and it is worth having the paperwork done properly from the start rather than retrofitting a certificate later.
This is the part of the job the qualification is actually for, and the part every thin local page skips entirely. Ask about it. The answer tells you a great deal about who you are dealing with.
Published on 19 March 2024, developed by BSI and sponsored by the UK government. Its full title is "Electrical installations. Protection against fire of battery energy storage systems for use in dwellings. Specification". It is not a British Standard and it is not law, but it is the reference point everyone competent now works to.
Its location rules are the practical bit. A battery should not go in a room intended for sleeping. It should not go on a means of escape that is not a protected escape route, which rules out most landings, staircases and hallways in an ordinary house. And it sets specific provisions for loft spaces, which is exactly where a lot of people assume it will end up.
20kWh
PAS 63100 clause 6.1.3 caps stored energy at 20kWh per enclosure. It is a number worth knowing before anyone sketches you a wall full of modules, because it is the point at which a bigger system becomes a different installation rather than simply more of the same one.
Now in its 3rd Edition, covering design, installation, commissioning, operation and maintenance of an EESS. It requires installation in accordance with BS 7671, and sets standards specific to the battery chemistry in front of you.
There is a chain here worth knowing. The MCS installation standard for storage points at the IET Code of Practice, and the Code of Practice recommends PAS 63100 be considered. So the certification route and the fire guidance are joined up, and an installer working properly to one is working to all of it.
Your distribution network operator here is SSEN. Battery storage almost always sits above the 3.68kW per phase threshold that would allow the simpler G98 notification, so a G99 application has to be approved before the system is switched on. Not notified afterwards. Approved first.
We make the application as part of the job. It is worth asking anyone else quoting you who submits it and at what stage, because a system energised without approval is a problem that surfaces later, usually when somebody tries to register it or sell the house.
The installation is designed, tested and certified to BS 7671, the 18th Edition wiring regulations. The current amendment is A4:2026, published on 15 April 2026 and mandatory for all new work from 15 October 2026.
This is not general trade detail on a battery page, it is directly on point. A4 brings in updated requirements for stationary secondary batteries, which is the formal name for the thing on your wall. And A3:2024 had already added Regulation 530.3.201 on selecting devices for bidirectional current flow, which is precisely what a battery creates in a house originally wired to take electricity in one direction only. An installer still quoting A2:2022 as the current standard is two amendments behind on the one topic where it matters most. More on Amendment 4.
Fitting a battery inside an existing house is electrical work rather than a structural alteration, so a building warrant is not normally in play, and there is no planning application for a unit on a garage wall. Where it can come up is if the installation involves building work, a new outbuilding to house it, or a property type outside the domestic exemptions. Peterhead is Aberdeenshire Council, not Aberdeen City, and building standards and planning both sit with Aberdeenshire.
What never goes away, warrant or no warrant, is BS 7671. The installation is tested and certified either way, and you get the certificate.
In practice: an attached garage, a utility room, a plant cupboard, a porch, or an outbuilding, on a wall with room around it, away from sleeping rooms and away from the way out of the house. Ventilation, ambient temperature and access for maintenance all matter, and so does how far it sits from your consumer unit, because that drives the cable run.
On the older harbour properties this is genuinely the constraining question, more than price. A tight terrace with no garage and a single staircase does not always have an obvious compliant location, and it is far better to establish that at survey than after a deposit. If your house does not have a sensible spot, we will say so.
National guides and templated location pages routinely tell Scottish homeowners about Part P and about notifying Building Control. Neither exists in Scotland. Part P is a section of the Building Regulations for England and Wales. Scotland has Building Standards, administered by the local council, and the mechanism is a building warrant rather than a notification. There is no Building Control body to notify here.
It is a small thing that tells you something larger. A page that has not worked out which country's regulations apply has probably not worked out much else either.
We install SolarEdge, Fox ESS, Alpha ESS and SolaX. All lithium iron phosphate, all with proper UK support behind them, and the choice between them comes out of your house rather than out of whatever we happen to have in the van.
Every battery we install uses lithium iron phosphate cells, usually shortened to LFP. It is the chemistry the domestic storage industry has converged on for one reason: thermal stability. LFP is markedly more tolerant of abuse and heat than the nickel based chemistries used in phones and many cars, and it holds up over far more cycles.
It is also why the warranties are long. Fox ESS typically warrants 10 years on its EQ and EP ranges and 12 on the newer CQ6, with round trip efficiency in the 95% to 98% region. SolaX Triple Power is LFP in 5.8kWh modules stacking to around 23kWh with a 10 year warranty and SolaX Cloud monitoring. Alpha ESS is LFP as well.
If you already have solar with a working inverter, an AC coupled battery bolts on alongside it without touching the array. If you are fitting both together, or your existing inverter is due for replacement anyway, a DC coupled hybrid inverter is more efficient because it avoids a conversion step. That is the first fork in the road at survey and it changes which brand makes sense.
SolaX Triple Power builds in 5.8kWh blocks. Fox ESS builds in 3.96kWh blocks. That granularity matters when your meter data says you need eleven kilowatt hours rather than ten or fifteen, and it matters again if you want to add capacity in a couple of years without replacing the lot.
Every system we fit reports to an app so you can see what it charged, what it discharged and what it saved. We set it up with you at handover and show you what a normal day looks like, so an abnormal one is obvious.
Most of that is the G99 approval and equipment lead time rather than anyone being in your house.
What you spend, who is home during the day, whether there is an EV, and whether you already have panels. That is usually enough to say whether storage is worth surveying.
We ask for a year of half hourly consumption from your supplier. It is the difference between sizing a battery and guessing at one, and it is free to get.
Where the unit can compliantly go, ventilation and ambient temperature, cable route to the board, whether the consumer unit can take the circuit, and whether an EPS output is practical for the circuits you care about.
Capacity, brand, AC or DC coupled, location, what the EPS covers if you want one, and the modelled saving against your own consumption. In writing, no pressure to sign on the day.
Submitted and approved before installation is booked. We handle it and keep you posted on where it is.
Usually one day for a straightforward retrofit, longer where the board needs replacing or an EPS is being wired. Short isolation while we connect and test, and we tell you when.
Full testing and certification to BS 7671, the MCS certificate issued by Q-Smart under our partnership, monitoring app set up, charge windows configured to your tariff, and a walk through of what good looks like.
Every figure below is fully installed, tested and certified, with the grid application handled. The final number comes from the survey, in writing.
| 10kWh battery, no solar required | £3,500 to £5,000 |
| 15kWh battery, larger homes | £5,000 to £7,000 |
| 5kWh to 10kWh retrofit to an existing array | £3,500 to £5,000 |
| Commercial storage, 15kWp to 50kWp | from £14,000, by survey |
The 10kWh standalone retrofit is the most popular option here. It is enough to shift most of a family home's daytime demand into the overnight window. A 15kWh unit suits higher consumption households, heat pumps, or homes wanting more circuits covered during an outage, and is only worth it if you can genuinely cycle it.
| 4kWp solar with a 10kWh battery | £10,000 to £12,000 |
| 4kWp solar, 10kWh battery and a myenergi Zappi EV charger | £12,500 to £15,500 |
| EPS backup output for essential circuits | option, quoted at survey |
| Whole home backup | option, quoted at survey |
| Consumer unit upgrade, where the board cannot take the circuit | from £550 + VAT |
Fitting solar and storage together means one scaffold, one electrical job and one grid application, which is cheaper than doing them two years apart. See the solar page.
Where the battery can compliantly go, and how far that is from your consumer unit. Whether the existing board can take the new circuit or needs replacing. Whether you want an EPS output and how many circuits it should carry. Whether the installation is AC coupled onto an existing solar inverter or DC coupled through a new hybrid one. And the capacity itself, which should come out of your meter data rather than out of a round number that sounded good.
Call 07304 027013The VAT position, precisely. Qualifying residential battery installations are zero rated, including standalone batteries with no solar, on both hardware and labour as a single supply. That relief runs until 31 March 2027 and then reverts to 5% on 1 April 2027. There is no VAT to add to any battery figure above. The consumer unit line is separate electrical work and carries VAT in the normal way, which is why it is the one price on this page showing a suffix.
We install storage across Peterhead itself, including Buchanhaven and Roanheads, and out through Boddam, Burnhaven, Longhaven, Inverugie, Rattray, St Fergus, Crimond, Longside, Mintlaw, Hatton and Cruden Bay.
Related services: Solar Panels Peterhead · Solar PV & Battery Storage · EV Chargers Peterhead · Consumer Units Peterhead · EICR Peterhead · Rewires Peterhead · All Areas We Cover
Want the background reading first? We have guides on whether solar battery storage is worth it in Scotland, solar and battery storage in Peterhead for homeowners, and the Smart Export Guarantee in Scotland.
If your question is not here, phone and ask it. We would rather tell you a battery is wrong for your house than fit one that never cycles. Call 07304 027013 or get in touch.
Yes, and since 1 February 2024 it is zero rated for VAT in its own right. A standalone battery charges from cheap overnight grid electricity and runs your house through the expensive part of the day. It works on a shaded roof, a north facing roof, an upper flat, or a house where the roof is not yours to touch. What it needs is not sunshine, it is a time of use tariff and a household that uses enough electricity during the day to make shifting it worthwhile.
Not unless it has been specified to. G99 requires a grid tied inverter to disconnect the instant the mains is lost, so that your system cannot energise a line SSEN engineers are working on. The default behaviour is to shut down, however full the battery is. To get power during an outage you need an EPS, an Emergency Power Supply output with a relay that isolates part of the house and lets the inverter run it as an island. Changeover takes about 10 to 20 seconds and an EPS output is typically 3 to 5kW, so lighting, fridge, freezer, router and boiler controls rather than the shower. It is a chargeable option, quoted at survey.
On tariff shifting alone, a family home using 3,500 kWh a year with a 10kWh battery on a time of use tariff at 8p overnight and 30p daytime pays roughly £507 a year, against roughly £840 on a standard flat 24p tariff. That is about £333. At £3,500 to £5,000 fitted, that is a ten to fifteen year payback on tariff shifting by itself, so we would not sell you a battery purely as an investment. Add solar self consumption on top, and the resilience during an outage, and the case gets much stronger. We model it against your real consumption at survey rather than quoting a generic figure.
No, but it helps more than most people expect. The cheapest overnight tariffs, such as Intelligent Octopus Go at around 7.5p between 11:30pm and 5:30am, require a compatible electric vehicle or smart charger to qualify. A home battery on its own does not get you onto them. If you do have an EV, the cheap rate during that overnight window applies to the whole house rather than just the car, which is why households with a charger already fitted get the most out of storage. Other time of use tariffs exist without an EV requirement, with a smaller spread between the cheap and expensive rates.
Usually an attached garage, utility room, plant cupboard, porch or outbuilding. PAS 63100:2024, the fire specification for battery storage in dwellings, says a battery should not go in a room intended for sleeping, and should not go on a means of escape that is not a protected escape route, which rules out most landings, staircases and hallways. It also sets specific provisions for loft spaces. PAS 63100 clause 6.1.3 caps stored energy at 20kWh per enclosure. On tight harbour terraces this is sometimes the deciding factor rather than price, and we establish it at survey.
A 10kWh battery fitted, whether standalone or retrofitted to existing solar, is £3,500 to £5,000. A 15kWh unit is £5,000 to £7,000. A 4kWp solar array with a 10kWh battery installed together is £10,000 to £12,000. All of these are zero rated for VAT until 31 March 2027, after which the rate becomes 5%. An EPS backup output and whole home backup are chargeable options priced after the survey, and a consumer unit upgrade, where the existing board cannot take the new circuit, starts at £550 + VAT.
Yes. Battery storage almost always exceeds the 3.68kW per phase threshold for the simpler G98 notification, so it needs a G99 application to SSEN that is approved before the system is energised, not notified afterwards. We submit it as part of the job. If an installer does not mention grid approval at all, ask who is doing it and when.
SolarEdge, Fox ESS, Alpha ESS and SolaX, all lithium iron phosphate. LFP is what the domestic storage industry has settled on because it is thermally stable and lasts for many more cycles than the nickel based chemistries used in phones. Warranties reflect it: Fox ESS typically 10 years on the EQ and EP ranges and 12 on the newer CQ6, with round trip efficiency in the 95% to 98% region, and SolaX Triple Power 10 years across 5.8kWh modules stacking to around 23kWh.
Warranties on the units we fit run 10 to 12 years, and they are written as a retained capacity figure rather than a simple on or off. A battery does not stop at the end of its warranty, it holds less than it did when new. LFP chemistry degrades slowly, which is a large part of why it is the chemistry we fit. The inverter is generally the component with the shorter service life, and on a DC coupled hybrid system it is the part most likely to be replaced first.
No. Part P is a section of the Building Regulations for England and Wales. Scotland has Building Standards, administered by the local council, and the mechanism is a building warrant rather than a notification. There is no Building Control body to notify here. Peterhead sits within Aberdeenshire Council. Fitting a battery in an existing house is electrical work rather than a structural alteration, so a warrant is not normally in play, but the installation is tested and certified to BS 7671 regardless.
Call Steven directly on 07304 027013 or use the form. Tell us roughly what you spend on electricity, whether anyone is home during the day, and whether there is an electric car. Send us a year of meter data and we will size it against your real usage rather than a round number. NICEIC Approved Contractor, enrolment 620239. OZEV Authorised Installer. City and Guilds Level 3 Award in the Design, Installation and Commissioning of Small Electrical Energy Storage Systems, plus 2391-52 inspection and testing and an HNC in Engineering Systems. Every installation fully MCS registered through our Q-Smart partnership. £2M public liability insured.
Faithful Spark Electricians · 17 Thomson Road, Peterhead, AB42 3FJ · 07304 027013 · Company registration SC821026 · NICEIC Approved Contractor, enrolment 620239 · OZEV Authorised Installer, EVHS/WCS14254 · SELECT Member · MCS registered through our Q-Smart partnership · BS 7671 18th Edition · 0% VAT on qualifying residential battery installations until 31 March 2027 · £2M public liability insured
