Field notes, tools, and research from the Volton team.
Everything we publish about how the Estonian and wider Nordic energy markets actually work — from short market reads to deep dispatch analyses and forecasting tools.
Blog
Field notes from the Volton team — market moves, dispatch deep dives, and product updates.
Simulate earnings
Estimate how much your flexible assets could earn on Nord Pool and the balancing markets.
Glossary
Definitions of the terms used across Volton — markets, balancing services, smart-home flexibility and the contracts that hold it all together.
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The cheapest battery in your home is the boiler
A 100-150L hot-water tank stores 4-8 kWh as heat — about the same capacity as a small home battery. A €50 smart relay on the existing tank pays itself back within the first heating season.
Floor heating is the most flexible heater in your house
Resistive floor heating is in most Estonian homes and most of it runs dumb. The slab is essentially a thermal battery; price-aware scheduling captures spot-price spreads while the room temperature barely moves.
Home batteries, two stacked revenue streams
A 10 kWh home battery earns ~€730/year from spot arbitrage alone. Stacked with aggregated frequency-reserve revenue (only available via a BSP), the same hardware can clear above 10% IRR.
When your solar panels lose you money
On a sunny April afternoon, a 10 kW rooftop array can produce 8 kWh and lose money in the same hour. Smart self-consumption + curtailment + battery routing is what makes solar pay in 2025 Estonia.