// BlokBlok Energy

Bitcoin mining creates a base value for energy.

We build Bitcoin mining that does more than mine — recovering its heat, following the price of power, and turning energy that would go to waste into something useful. A father-and-son project, starting in Norway.

// The idea

A miner is really just a heater that pays for itself.

Run a Bitcoin miner and you get two things — a little Bitcoin, and a lot of heat. Most mines throw the heat away. We don't. Our miners warm the building they sit in, and they run hardest when power is cheap — so the same electricity does double duty, and very little is wasted.

01

Use the heat

A miner runs hot. We capture that heat and put it to work warming the building, instead of letting it drift off into the cold.

02

Follow the price

Electricity costs change by the hour. Our miners run hardest when power is cheap and ease off when it climbs.

03

Waste nothing

Spare grid capacity, waste heat, power that would be curtailed and lost. A miner can soak it up and turn it into value.

// The Norway project
Under construction · Norway

A heat-reuse mine in a Norwegian warehouse

Our main project is being built into a warehouse in Norway. Immersion- and air-cooled miners feed their heat into the building's water loop, warming the space through the long winter instead of venting it outside. The whole site watches the Nordpool spot price, mining hard when power is cheap and easing off when it isn't. It's a hands-on build: the power, the ductwork and the software are all designed and installed ourselves.

Custom galvanised ductwork carrying miner heat through the Norway warehouse
// Inside the build

Built by hand, in the Norwegian winter.

Power distribution, custom air handling and heat capture — designed and installed from the ground up.

// The solar project

An off-grid solar miner in the UK.

A separate project from the Norway site: a small, experimental build in the UK that runs Bitcoin miners straight off solar panels, with no battery.

Solar panels and the miner enclosure in a field The solar miner control enclosure being built The off-grid solar array in a UK field at dusk

Batteries are expensive, so here the miners do the balancing themselves. The aim is to run them as close to the panels' maximum output as the available light allows, moment to moment. Dump-load resistors find that maximum power point in real time and absorb any excess. They also buffer sudden drops: when a cloud passes over, the resistors take up the swing while the miners spend a few seconds throttling down. It's early and experimental, but the goal is a solar miner that needs no grid and no battery.

// About

Who's behind it.

BlokBlok Energy is built by Oscar Hoeltschi. Oscar is the technical one, handling the wiring, the ductwork and the software, with help along the way from his dad. It started as a crypto mining hobby and grew into a real attempt to make mining genuinely useful.

Oscar at the BlokBlok Energy miner racks Oscar with the off-grid solar panels Oscar Hoeltschi