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Battery hostingSE · DE · NLStockholm prime · 3.85–4%

Your upfront cost for a commercial battery at your property.

ZERO

We finance, install, and operate. You share every revenue stream, across peak shaving, arbitrage, and frequency markets.

See if you qualify
Apply to host a pilot batteryDirectory · 00 of 08
01 · ProblemDemand chargesRising grid feesIdle capacity
Europe · 2025 baseline

Your building is paying for peaks it doesn't need

Demand charges are rising across Europe, and most of the capacity you pay for sits unused.

€40B+

paid annually across Europe in commercial demand charges on peak power that lasts minutes

10.6%

grid fee increase in Sweden in 2025, the largest in 30 years

65-80%

of grid capacity unused in typical commercial buildings

Three stats, one storyDirectory · 01 of 08
02 · SolutionBattery infrastructureAs a serviceBehind the meter
Zero capex · 70% savings to host

Battery Infrastructure as a Service

We finance, install, and operate a battery system behind the meter at your property. You save on demand charges from day one, with no capex and no operational burden.

01

We assess your property

We evaluate your building's load profile, grid connection, and peak demand to size the right system.

02

We install at zero cost

We finance and install the battery system behind the meter, sized to your load profile. No capex for you.

03

You earn, three ways

The battery stacks three revenue streams — peak shaving, arbitrage, and frequency markets via an aggregator. You share every one, paid monthly.

04

We handle everything else

Monitoring, maintenance, insurance, and grid services operations are all included. Zero operational burden, zero risk.

Four steps, one outcomeDirectory · 02 of 08
Behind the meter

A battery at your building, operated by us. You keep the savings, we handle everything else.

03 · OwnershipFor commercial property ownersThe offer12–15 year service
Apply to host a pilot

Free batteries for commercial properties

We install a commercial battery at your property at zero cost. The battery stacks three revenue streams — peak shaving, arbitrage, and frequency markets — and you share every one. Lower operating costs translate directly to higher property valuations.

01 · Zero cost

Zero Cost

Zero upfront cost. We finance the entire installation. You pay nothing.

02 · 70% split

Three Revenue Streams

You share the upside from peak shaving, arbitrage, and frequency markets — paid monthly. No risk.

03 · Property value

Property Value

Recurring battery revenue compounds into property value at your market's prime yield.

04 · K3 compliant

Off-Balance Sheet

Off-balance-sheet under K3 accounting. No capex, no depreciation.

05 · Operated by us

Full Service

We handle all monitoring, maintenance, and insurance.

06 · Apply

Apply for a Free Battery

Start your application
Five features, one offerDirectory · 03 of 08
04 · FootprintWhere we operateNorthern EuropeLive + expanding
Property in one of these? Apply.

Commercial battery infrastructure across Europe

We're live in Sweden and expanding across Northern Europe. If your property is in one of our markets, we can assess it.

01 · Sweden
⡡⠊⢔⠡Kalmar

Sweden

Active

Our home market. First site live, with existing utility partnerships and grid service access.

02 · Germany
○Berlin

Germany

Expanding

Onboarding commercial properties now. High demand charges (Leistungspreis) make the economics strong from day one.

03 · Netherlands
○Amsterdam

Netherlands

Expanding

Grid congestion (netcongestie) makes behind-the-meter storage one of the fastest ways to unlock capacity.

Three markets, one operatorDirectory · 04 of 08
05 · PlatformFor utilities & installersNova Core · Zap · AppLive at Kalmar Energi
Utility or installer? Explore the platform.

The software behind every Sourceful site

Nova Core, the Zap gateway, and our mobile app also run as a platform for utilities and installers. Live in Kalmar, ready in days, priced as software.

⠀⠀⠀⠀Live · Kalmar Energi

“With the Zap we give our customers a tool to understand and influence their electricity usage.”

— Per-Martin Carlsson, Marketing Director, Kalmar Energi
Launched23 February 2026
Deployed ahead ofSweden's autumn 2026 residential effektavgift
IntegrationP1 / HAN port, installs in minutes
Read the press release
01 · Live

Consumer telemetry for utilities

Kalmar Energi launched the Zap to their residential customers in February 2026, ahead of Sweden's autumn 2026 effektavgift. Real-time P1/HAN visibility, installed in minutes.

02 · Two-stage

Onboarding by us, data into your app

Customers pair the Zap in the Sourceful app. Once live, telemetry flows through Nova Core into your own consumer app via API. You keep the brand. We own the fiddly bit.

03 · 13 brands

OEM device support out of the box

Sungrow, SolarEdge, Huawei, Deye, Fronius, SMA and more. Modbus, MQTT, OCPP, P1. One gateway for an installer fleet, one API for a utility retail arm.

Explore the platform
One stack, three customer shapesDirectory · 05 of 06
06 · ApplyProperty owner?Host a pilot batteryNo capex · 12–15y
One site to start. Portfolio after.

APPLY.

One site. Zero capex. Roughly 12.5 MSEK in new property value per site at Stockholm yields. A 30-minute discovery call is the first step.

Apply for a Free Battery
End of directoryDirectory · 06 of 06
Sourceful Energy

Commercial battery infrastructure from Sweden. We install and operate battery systems at commercial properties, reducing grid costs and increasing property value.

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Monthly updates on commercial battery deployments, grid economics, and energy infrastructure.

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Made in Kalmar, Sweden

All savings, costs, and financial figures shown are estimates for illustrative purposes only. Actual results depend on your specific setup, energy consumption patterns, electricity prices, and local regulations. This content is provided for informational purposes only and does not constitute financial, investment, or legal advice.