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eRevo AG

Knowledge

Substance you can verify.

Not a sales brochure, but material you can scrutinise, with sources, standards and answers to the most frequent questions.

Sources and standards

Cover: Swissgrid White Paper (March 2026)

Swissgrid White Paper (March 2026)

Expanding PV from around 10 to up to 40 GWp makes neither technical nor economic sense without storage. Grid costs will rise by up to 100 per cent by 2050.

Download PDF (4.8 MB) swissgrid.ch ↗
Cover: Areale und Quartiere (ed. Gugerli, Faktor Verlag, 2024)

“Areale und Quartiere” (ed. Gugerli, Faktor Verlag, 2024)

The reference work positions battery storage in day-night balancing and seasonal energy storage with hydrogen. ZEV self-consumption rates of 70 to 90 % in mixed-use sites.

Download PDF (8.8 MB) faktor.ch ↗
Cover: summary of the National Research Programme Energy

Summary of the NFP “Energy” (NFP 70/71, Swiss National Science Foundation)

Recommendation 5 to policymakers and energy utilities reads, verbatim, “Implement decentralised multi-energy systems (DMES)!”. They enable highly efficient use of decentrally generated energy and avoid costly grid expansion.

Download PDF (9.5 MB) nfp-energie.ch ↗ What this means →
Cover: SVGW Guideline H10001

SVGW Guideline H10001

The safety framework for building-integrated H₂ systems, the reference for SIA-compliant planning, co-developed by eRevo.

Download PDF (1.1 MB) svgw.ch ↗

The technology behind it

Metal hydride, simply explained.

Just as a sponge soaks up water, the metal hydride absorbs the hydrogen and binds it chemically within its metal lattice. And it does so effectively forever, until the energy is needed.

The full explanation with diagram and three steps

Frequently asked questions

Safety

Why is this large-scale storage system allowed in an occupied building?

The hydrogen is chemically bound in the metal lattice, around 97 % is held solidly in the metal hydride. Solid state, 35 bar low pressure, no self-discharge, no compression and a significantly lower fire load than large-scale battery storage systems. SVGW Guideline H10001 governs safety and permitting.

What does 35 bar low pressure mean compared to compressed hydrogen?

Conventional gas storage systems operate at 300 to 700 bar and require compression. In the metal hydride, the hydrogen is chemically bound at just 35 bar. One kilogram takes around 20 litres instead of 310 litres in a 40 bar gas storage system, without a compressor.

How is fire protection regulated?

The basis is SVGW Guideline H10001, the safety framework for building-integrated H₂ systems, co-developed by eRevo. It covers risk analysis, fire protection, ventilation and explosion protection and is the reference for SIA-compliant planning.

Economics

When does a DMES pay for itself?

Under 10 years is possible, calculated under ideal conditions and without funding. The potential analysis shows how big the levers are at your site, with robust figures for your project.

What sources of revenue are there?

Each storage system in its own market. The short-duration storage serves balancing energy, intraday, Peak Shaving and ancillary services, the long-duration storage serves the seasonal shift, and the thermal output supplies heat. Added to this are your own electricity tariff within the ZEV (self-consumption community) and the CO2 reduction pathway with funding instruments from around 1,000 tonnes CO2 per year.

What happens after 20 years of warranty?

The storage capacity is guaranteed by the manufacturer for 20 years; in practice the storage system lasts several decades. If performance declines, it is regenerated with noble gas. On decommissioning, the pure metal returns fully into the material cycle.

Planning

What requirements does a DMES need at the site?

Three things. First, a PV surplus, because the system must produce more electricity than is consumed on site, and it is precisely this surplus that is stored. Second, a functioning water connection, because the electrolysis obtains the hydrogen from water; a reliable water supply is a prerequisite for operation. Third, a suitable installation room with access. The Quick Check shows in just a few minutes whether your site is suitable.

In which SIA phases does eRevo come on board?

In all of them, most effectively in the preliminary study. We work within the SIA phase model with clear interfaces to HVAC, electrical, fire protection and conformity. Where the client wants design-build, we can do that too.

Who plans HVAC and electrical?

Your specialist planners, each in their own trade. The thermal integration stays with the HVAC planner, the electrical integration with the electrical planner. The system architecture in between comes from eRevo.

How long does it take from the potential analysis to operation?

Potential analysis 1 month, options study 2 months, preliminary project 3 months, realisation 6 to 12 months, within your existing construction and planning processes.

Technology

What distinguishes the long-duration storage from a battery?

Batteries can handle day and night, long-duration storage can handle seasons. Battery storage covers the day-night balance. The metal hydride storage shifts summer energy into the winter, with virtually no self-discharge. In effect, the energy is trapped in the metal lattice forever until it is needed. And that over 30 years and more.

Is a hydrogen infrastructure needed?

No. Everything is created on site. The electrolysis converts your own surplus electricity, the storage system stands in the building, the fuel cell converts it back into electricity. Without transport losses and without a national H₂ infrastructure as a prerequisite.

What happens at decommissioning?

The long-duration storage works without rare earths and without lithium. On decommissioning, the pure metal returns fully into the material cycle, circular construction in the energy infrastructure too.

Documentation for your field.

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