How Coffee Shop Owners Can Choose the Right Sunpura S2400 Series Plug & Play Energy Storage System

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:

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:

1. Track your daily load (fridges, espresso, POS, lighting)

2. Assess your solar potential (balcony PV or rooftop PV)

3. Start with 1 unit, then scale up (modular design = flexible)

4. 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.