Power the Cloud with Clean Energy
Data centres consume enormous amounts of electricity around the clock — and cooling loads peak during the hottest, sunniest hours. Solar plus large-scale battery storage slashes grid dependency, cuts peak demand charges, and extends UPS bridge time during outages.
£156k/yr
Typical savings (1 MWp + BESS)
5.1 yr
Average payback with battery storage
98.5%
Uptime protection improvement
312 tCO2e
Annual carbon offset
Why Data Centres Are the Ultimate Solar Use Case
Data centres operate at near-constant load with very high power density. Unlike offices or retail, they do not shut down at night — but critically, their cooling demand spikes during daylight hours when ambient temperatures and server utilisation are highest. This creates a near-perfect correlation between solar generation and thermal load. Adding battery storage means you can capture surplus morning generation and discharge it during afternoon peak tariff windows, slashing both consumption charges and expensive peak demand penalties. The battery also serves a second, mission-critical purpose: it extends UPS bridge time from the typical 5–10 minutes to 45+ minutes, giving diesel generators ample time to spool up cleanly during grid outages.
Typical System Profile
What Makes This Sector a Strong Fit
Peak Demand Shaving
Battery discharge during afternoon peak periods eliminates the demand spikes that drive 30–40% of your electricity bill and stress your switchgear.
UPS Bridge Extension
Extend critical load backup from 10 minutes to 45–60 minutes. Gives diesel generators ample time to start cleanly and reduces fuel-wasting false starts.
PUE Improvement
On-site renewable generation is counted toward your Power Usage Effectiveness denominator. Solar directly improves your published PUE and sustainability ratings.
Scope 2 & SLA Compliance
Meet carbon-neutral data centre commitments, improve ESG reporting, and satisfy hyperscaler customer audits with auditable generation data.
Solar ROI Calculator
Enter your building size and monthly electricity bill for a personalised savings estimate tailored to data centre buildings.
Your Building Details
Include total footprint of available roof, car park, or ground space.
Your most recent commercial electricity bill (excluding VAT and CCL if possible).
This is a simplified estimate based on UK averages. A proper survey uses half-hourly consumption data, shading analysis, and structural assessment to give you an accurate proposal.
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Add your building area and monthly bill above. We will estimate system size, annual savings, and payback instantly.
Uptime, PUE & Resilience
Data centres cannot tolerate compromise. Here is how solar + battery stacks up against the metrics that actually matter.
SLA-Grade Power Quality
1Sub-20ms Seamless Islanding
Our battery-backed inverters switch from grid-tied to off-grid in under 20 milliseconds — faster than a standard UPS transfer. Your servers, storage arrays, and network switches never detect the transition. Zero packet loss. Zero reboots.
2Harmonic Distortion < 3% THD
Solar inverters equipped with active harmonic filters maintain total harmonic distortion well below the 5% limit defined in IEEE 519 and EN 50160. Clean sine-wave output protects sensitive power supplies and extends the life of server-grade PSUs.
3Voltage Regulation ±1%
Smart inverters continuously adjust reactive power output to maintain voltage within ±1% of nominal at the point of common coupling. This eliminates the sags and swells that trigger server brown-outs and premature capacitor failures.
4Redundant Inverter Architecture
We design with N+1 or N+2 inverter redundancy, so the failure of any single unit drops total capacity by only 5–10% rather than shutting down an entire string. Automatic bypass isolates the faulty module without human intervention.
< 20ms
Grid-island transfer speed
< 3%
Total harmonic distortion
0.05–0.12
Typical PUE improvement
60+ min
Extended UPS bridge time
Solar Readiness Checklist
Tick the boxes that apply to your data centre. See how ready your building actually is — no sales call required.
Needs More Assessment
A few factors are still unclear. A free site survey will clarify exactly what is possible on your building.
What Your Score Means
A few factors are still unclear. A free site survey will clarify exactly what is possible on your building.
Even if you only tick 2–3 boxes, a free site survey often reveals hidden advantages — unobstructed ground space, favourable grid connection capacity, or grant eligibility you did not know you had.
The Concerns We Hear Most
In the Data Centre sector, these are the questions that come up in every first meeting.
Any downtime is catastrophic
"If solar equipment causes even a microsecond interruption, we lose SLAs and customer trust."
Solar never interrupts your supply. The system operates in parallel with the grid, feeding power into your distribution infrastructure without breaking the circuit. Our battery-backed systems include seamless islanding inverters that switch from grid-tied to off-grid in under 20 milliseconds — faster than a standard UPS transfer. In over 300 commercial installations, we have recorded zero power quality events attributable to solar or battery integration.
Zero SLA breaches across 300+ commercial solar integrations
Our roof is already crowded with plant
"The roof is full of chillers, evaporative cooling, and ducting. There is no room for panels."
Data centre roofs are dense, but they are also large. We use drone-mounted LiDAR and 3D CAD to design elevated mounting frames that rise above HVAC equipment, or identify adjacent ground-mount and carport areas. On one 1.2 MWp project, we recovered 75% of what initially appeared to be a fully occupied roof by elevating arrays above cooling plant.
Average data centre roof recovers 70% usable area after plant survey
Batteries are a fire risk near our servers
"We have heard about lithium battery fires. We cannot take that risk in a critical facility."
We specify lithium iron phosphate (LFP) chemistry exclusively for indoor or adjacent data centre installations. LFP has a fundamentally different, far more stable thermal profile than NMC chemistry. Our systems include multi-layer BMS protection, NFPA 855-compliant fire suppression, thermal runaway detection, and automatic off-gas venting. All battery enclosures are IP-rated and physically separated from server halls by fire-rated walls.
LFP thermal runaway temperature >270°C vs NMC at ~150°C
We already have UPS and diesel generators
"Our infrastructure is already protected. What does solar actually add?"
Solar does not replace your UPS — it extends its effective capacity. During a grid outage, the battery discharges to critical loads while generators spool up. With a standard UPS, you have 5–10 minutes of bridge time. Our solar + BESS systems extend this to 45–60 minutes, eliminating generator-start failures due to cold batteries or fuel contamination. Beyond resilience, solar and battery actively reduce your daily grid bill, turning resilience infrastructure into a revenue-positive asset.
Battery bridge extension reduces generator-start failure risk by 85%
Real Data Centre Projects
See how Bee Solar has delivered results in this sector.
What We Typically Deliver for Data Centre Clients
Data Centre Solar Questions
Yes. Solar feeds into your main distribution infrastructure and displaces grid import in real time. For a data centre running at 2 MW constant load, a 1 MWp array directly offsets half of daytime grid draw. The remaining load continues to pull from the grid seamlessly. There is no switching, no interruption, and no operational change required.
No. Our energy management system partitions the battery into a 'cycling' portion for daily peak shaving and a 'reserve' portion locked for emergency backup. The reserve segment never participates in daily cycling and is maintained at 100% state of charge. LFP batteries are rated for 6,000+ cycles at 80% depth of discharge, meaning a 15+ year operational life even with daily use.
PUE is total facility energy divided by IT energy. On-site solar generation is typically subtracted from the numerator in standard PUE calculations (per The Green Grid methodology). A 1 MWp system generating 850,000 kWh/year directly reduces your facility energy figure, improving PUE by 0.05–0.12 depending on your baseline. This is a meaningful improvement that hyperscaler clients and sustainability auditors recognise.
During a grid failure, the solar + battery system immediately isolates from the grid and begins powering critical loads. The battery bridges the gap for 45–60 minutes while diesel generators start. Once generators are online, they take over and can also recharge the battery if the outage extends beyond fuel capacity. Solar generation during daylight hours reduces generator fuel consumption by powering non-critical cooling directly.
Ready to Explore Solar for Your Data Centre?
We will survey your site, model your savings, and present a tailored proposal — no obligation, no pushy sales calls.
Typical survey takes 45 minutes. Report delivered within 5 business days.