How Coffee Shop Owners Can Choose the Right Sunpura S2400 Series Plug & Play Energy Storage System
2025-07-03
As coffee shop owners in Germany face rising electricity prices, dynamic tariffs, and growing expectations for sustainability, many are looking to solar + storage solutions as a strategic upgrade — not just an environmental gesture.
Enter the Sunpura S2400 Series: a modular, all-in-one energy storage solution that pairs perfectly with balcony solar kits, offers plug & play deployment, and provides reliable off-grid power when it matters most.
But with four models in the S2400 lineup — S2400, S2400 AC, S2400 Plus, and S2400 AC Plus — which one fits your café, roastery, or mobile espresso business best?
Let’s break it down.
☕ Use Case 1: Starting From Scratch? Choose S2400 or S2400 Plus
If your café doesn’t yet have a rooftop or balcony solar setup, or if you're renting and want full control, the S2400 (2.4 kWh) or S2400 Plus (4.8 kWh) is your best bet.
S2400
Built-in dual MPPT solar input (2×1000 W)
Works with balcony PV kits, e.g., 2×210 W or 4×200 W
AC output: 800 W (on-grid), 2400 W (off-grid) — enough to run espresso machines, grinders, and lighting
Modular up to 9.6 kWh capacity (stackable)
Great for standalone solar + battery system startups
Example: A café with 420 W PV (2×210 W) can fully recharge the S2400 on sunny days, and power appliances off-grid during lunch hours.
S2400 Plus
Same functionality as S2400, but with double the storage (4.8 kWh)
Ideal for cafés with higher usage or longer operation hours
Supports bigger solar arrays, e.g., 4–8 panels (800–1600 W)
Best for premium or high-throughput cafés or if you want to future-proof
? Pro Tip: Choose the Plus version if you’re running multiple fridges or your espresso machine is in use for more than 3 hours/day.
Use Case 2: Already Have a Rooftop PV? Choose S2400 AC or AC Plus
If your shop already has a grid-tied solar inverter, or you’re in a multi-unit building with shared PV, then adding solar again isn’t necessary. Instead, use the AC-coupled versions:
⚡ S2400 AC
No PV input – connects directly to your existing inverter/grid
Charges using excess solar or off-peak grid tariffs
Same AC output as S2400
Perfect for retrofitting solar-only systems with battery
Example: A bakery in Cologne added S2400 AC to their PV inverter and now charges from solar excess during the day, then powers cold storage after sunset.
⚡ S2400 AC Plus
Same AC-only setup, but with 4.8 kWh storage
Ideal for energy-intensive shops or businesses with long operation windows (early baking, late-night prep)
Use Case: A roasting café with energy usage extending into the evening can use AC Plus to store grid energy at night and avoid peak-rate usage.
Decision Guide Summary:
Scenario | Best Model | Why |
No PV, want full system | S2400 | Solar + battery in one unit, expandable |
No PV, want more capacity | S2400 Plus | 4.8 kWh storage for larger daily use |
Already have PV (AC inverter) | S2400 AC | Add battery to existing system |
Already have PV, need more storage | S2400 AC Plus | Full-day coverage for large load profiles |
Extra Features for All Models:
IP65 outdoor-ready, fanless, whisper-quiet
Supports dynamic tariffs (Tibber, Octopus, etc.)
Works with smart plugs, P1 meters, my-PV heaters
Integrated fire suppression for safety
App monitoring, dual-mode connectivity (WiFi + LoRa)
✅ Final Tips for Coffee Shop Owners:
Track your daily load (fridges, espresso, POS, lighting)
Assess your solar potential (balcony PV or rooftop PV)
Start with 1 unit, then scale up (modular design = flexible)
Use dynamic tariffs to charge smartly when solar is low
Learn more at www.sunpura.de
Or contact sales@novgen-ess.com or your local distributor or installer for a sizing walkthrough.