Looking for solar battery install, cost and adoption statistics for a solar article, or just out of interest? Here you’ll find all the headline numbers for 2026, compiled and sourced from reputable providers. Fact checked and ready to go.
All charts, data analysis, graphics, screenshots and data presentations created by us are free to use in your publication under a CC BY 4.0
Key Home Battery Storage Stats
UK homes installed a record 41,042 batteries in 2025.
Home battery installs grew from 269 in 2022 to 41,042 in 2025.
92% of 2026 battery installations are paired with solar.
A home battery costs £600-£1,000 per usable kWh installed in 2026.
The average certified battery install costs around £9,000.
Batteries are zero-rated for VAT until 31 March 2027.
41,042Home batteries installed in 2025 – a UK record
Installations by year
MCS-certified domestic battery installs. 2026 = first half only.
Source: MCS Installation Database · *Jan-Jun 2026
Installs by year
Year
Installs
Change
2022
269
–
2023
4,970
+1,748%
2024
20,550
+313%
2025
41,042
+100%
2026 (H1)
~36,000
~2x H1 2025
19,045Batteries installed January to April 2026.
~36,000Installed in the first half of 2026 – near the whole 2025 record in six months.
~3,400Single-month record set in May 2025, up 112% on May 2024 – since surpassed.
Apr 2022MCS certified its first ever home battery.
Growth Milestones
How fast the segment is moving
1 / 13 minBattery install rate across 2025 – one every 13 minutes.
+707%Year-on-year jump in monthly installs in March 2024.
+130%Rise in installs, first half of 2025 vs first half of 2024.
3rdMost-installed home renewable in 2025, after solar and heat pumps.
~2x2025 installs were almost double 2024’s total.
Paired With Solar
Batteries rarely go in alone
92%Of 2026 battery installs paired with solar
85%Paired with solar in 2024
1 in 32026 installs (all MCS tech) onto existing-renewable or multi-tech homes
25%Of 2026 installs (all MCS tech) on new-build homes
Before Feb 2024
20% VAT
Standalone batteries carried standard VAT
Since Feb 2024
0% VAT
Standalone batteries zero-rated to 31 March 2027
Cost By Size
Fully installed, 2026, incl. 0% VAT
Installed cost by battery size
5 kWh£3,500-£5,500
10 kWh (most common)£5,000-£8,500
13.5 kWh (Powerwall 3)£7,500-£11,500
~£9,000Average certified battery install (MCS Data Dashboard, 2025).
£3k-£11.5kFull installed price range across common domestic sizes.
~£600Entry-level battery unit, hardware only, before inverter and install.
Cost Per kWh
Installed, per usable kWh – bigger is cheaper
Installed cost per usable kWh
5 kWh~£1,000/kWh
10 kWh~£850/kWh
13.5 kWh~£700/kWh
£600-£1,000Typical installed cost per usable kWh in 2026.
2022-23Price peak, driven by the supply-chain crunch.
2026Prices have fallen from that peak and stopped falling this year.
Sizes & Technology
What people buy and how it lasts
5-10kWhTypical home battery size
10kWhMost common single size
12-15kWhEV or heat pump homes
8-9kWhUsable capacity of a 10 kWh battery
LFPLithium iron phosphate is the chemistry in almost all 2026 home batteries.
6,000+Charge cycles for a quality LFP battery (up to 10,000).
10-12 yrTypical manufacturer warranty.
70-80%Capacity retained at end of warranty.
10-20%Capacity LFP systems reserve, so rated is above usable.
5.95 kWMax charge power for an MCS-certified battery (2025).
VAT & Policy
The support behind the boom
0%VAT on residential batteries until 31 March 2027.
Feb 2024Standalone batteries added to the 0% VAT relief.
5%Rate VAT returns to from April 2027.
~20%Extra a typical install would cost at the standard 20% VAT rate.
Tariffs
The arbitrage that makes storage pay
7-9.5pOvernight import on time-of-use tariffs (per kWh).
25-37pPeak import rate the battery discharges against (per kWh).
15-20pFlat Smart Export Guarantee rate for exported surplus.
up to 32pPeak time-of-use export rate with a compatible battery.
Market Context
Home storage within the wider battery market
12.9 GWhUK operational battery capacity, all scales (2025)
35-40%Residential share of behind-meter storage value
+45%Grid-scale capacity growth in 2025
80%+Of lithium cells sourced from China, S. Korea, Japan
Market Shake-Up
Supplier moves, 2026
2026 supplier events
Apr 2026
GivEnergy, one of the UK’s biggest home battery brands, entered administration.
Jun 2026
Octopus announced its Nook battery range, on sale 2027.
2026
Tesla selling the Powerwall 3 via Boxt on 0% finance.
2026
Sodium-ion arriving as an alternative battery chemistry.
Sources
MCSInstallation Database and scheme releases – install counts, solar-pairing rate, average cost.
DESNZMCS-certified domestic battery installation statistics (2026) – capacity and cost.
Solar Energy UKBattery adoption and solar-plus-storage analysis.
GOV.UKVAT relief on energy-saving materials, standalone batteries from Feb 2024.
Installer pricingPublished 2026 installed cost ranges, per kWh and by size.
METHODOLOGY: Install figures are from the MCS Installation Database (269 in 2022, 4,970 in 2023, 20,550 in 2024, 41,042 in 2025); earlier snapshots cite lower totals (~4,965 for 2023; 17,551-20,083 for 2024), which revise upward as late registrations land. 2026 covers January to June only. Cost figures are fully installed, usable-capacity basis, blending the MCS Data Dashboard average with published 2026 installer pricing. The 12.9 GWh capacity is national operational storage across all scales, for context. MCS figures cover certified installs; a small unknown share sit outside the scheme.
DISCLAIMER: Indicative figures, not financial advice. Battery economics depend on tariff, usage and solar pairing.
Ollie is the director of Solar Love and has been in the UK solar industry since 2010, when he co-founded one of the first solar portals (i-Solar) after the feed-in tariff was launched. He brings nearly 16 years of hands-on experience to every article, with a commitment to keeping things accurate, current, and easy to understand.
