Reduce CO₂ emissions in Germany | HydSun climate protection solutions
Reduce CO₂ emissions in Germany: Innovative hydrogen solutions for climate protection
Germany’s CO₂ emissions must be reduced by 65% by 2030 compared to 1990 levels (Federal Climate Protection Act). HydSun citizen energy parks offer companies, municipalities and industry measurable solutions for CO₂ reduction through decentralized production of green hydrogen (H₂) and oxygen (O₂). With CO₂ avoidance of 81 to 1,460 t CO₂/year per system (depending on size and reference scenario), HydSun systems can significantly reduce the CO₂ footprint. The 2025 CO₂ price (55 EUR/t; policy plans indicate 150-200 EUR/t by 2030; subject to change) makes green technologies economically compelling. Use our CO₂ calculator to estimate potential savings and CO₂-related cost impacts using your own assumptions.
Contact for CO₂ balance analysis: info@hydsun.info
Mission HydSun: CO₂ reduction for people and nature
Our vision for sustainable climate protection
The HydSun projects of graduate engineer and lawyer Wilhelm Brull pursue an overriding goal: the measurable reduction of CO₂ emissions in Germany through innovative hydrogen technology that simultaneously improves quality of life and protects natural ecosystems. Every citizen energy park that is built can make a quantifiable contribution to climate goals through CO₂ avoidance, decentralized energy supply and the substitution of fossil fuels.
Positive effects for people:
. Health: Reduced air pollution from H₂ mobility (up to -85% particulate matter, and reduced tailpipe NOx vs. diesel)
. Cost reduction: potential reduction of rising CO₂-related costs (2025: 55 EUR/t → 2030: 150+ EUR/t CO₂, subject to regulation)
. Energy security: independence from fossil imports with volatile prices
. Economic opportunities: New jobs in the green hydrogen economy
Positive effects for nature :
. Climate protection: Significant CO₂ savings (81-1,460 t CO₂/year per plant, depending on reference scenario) correspond to the annual binding capacity of 6,500-117,000 trees
. Biodiversity: Nature-oriented design of the energy parks creates habitats
. Resource conservation: substitution of fossil fuels, circular economy through local H₂/O₂ production
. Air quality: No CO₂ emissions at point of use with H₂ combustion (product: H₂O)
Mr. Wilhelm Brull as initiator develops these technologies out of the conviction that engineering solutions can combat climate change. His interdisciplinary expertise (engineering and law) enables holistic concepts that combine technical excellence with regulatory feasibility.
Together we are reducing Germany’s CO₂ emissions – for a future worth living.
Expertise & CO₂ reduction technology
CO₂ emissions in Germany: current situation and targets
Challenge: CO₂ emissions in Germany in 2024
Total emissions in Germany in 2023: 673 million tons of CO₂ equivalents
Target 2030 (Climate Protection Act): 438 million tons CO₂eq (-65% vs. 1990)
Required reduction by 2030: 235 million tons of CO₂eq in 7 years
Annual reduction rate required: ~34 million t CO₂/year
CO₂ emissions by sector (2023):
. Energy industry: 247 million tons of CO₂ (36.7%)
. Industry: 164 million tons of CO₂ (24.4%)
. Transportation: 146 million t CO₂ (21.7%)
. Buildings: 102 million t CO₂ (15.2%)
. Agriculture: 14 million tons of CO₂ (2.0%)
Problem: Germany is currently missing the sector targets for 2030. Transport and buildings in particular are 15-20% above the target paths. Innovative decarbonization technologies such as green hydrogen are essential to achieve the targets.
CO₂ price 2025 and CO₂ levy: financial impact for companies
CO₂ price 2025: development and cost burden
CO₂ price development in Germany (BEHG – Fuel Emissions Trading Act):
. 2024: 45 EUR/t CO₂
. 2025: 55 EUR/t CO₂
. 2026: 65 EUR/t CO₂ (indicative forecast)
. 2027-2030: 80-150 EUR/t CO₂ (EU ETS II integration; subject to implementation)
. 2030+: 150-200 EUR/t CO₂ (EU „Fit for 55“; subject to change)
Cost burden example industrial company (1,000 t CO₂/year):
. 2025: EUR 55,000/year CO₂ levy
. 2030: 150,000-200,000 EUR/year CO₂ levy
. Cost increase 2025-2030: +95,000-145,000 EUR/year (+173-264%)
HydSun approach: potential CO₂-related cost reduction through green hydrogen
Illustrative example (subject to assumptions): a 50-solar tree plant can avoid up to 712 t CO₂/year by substituting fossil fuels, depending on the reference system:
. 2025: 39,160 EUR/year indicative CO₂ cost impact
. 2030: 106,800-142,400 EUR/year indicative CO₂ cost impact
. Cumulative savings 2025-2040 (15 years): EUR 1.6-2.4 million
CO₂ calculator: How much CO₂ can HydSun technology save?
CO₂ calculator by system size
| System size | CAPEX | H₂ production/year | CO₂ avoidance/year | Tree equivalent | CO₂ price impact 2025 |
|---|---|---|---|---|---|
| 5 solar trees | 762.500 EUR | 1,212 kg H₂ | 24 t CO₂ | ~1,900 trees | 1.320 EUR/year |
| 10 solar trees | EUR 1.53 million | 2,424 kg H₂ | 48 t CO₂ | ~3,800 trees | 2,640 EUR/year |
| 50 solar trees | 7.63 million EUR | 12,120 kg H₂ | 240 t CO₂ | ~19,200 trees | 13.200 EUR/year |
| 100 solar trees | 15.25 million EUR | 24,240 kg H₂ | 480 t CO₂ | ~38,400 trees | 26.400 EUR/year |
Calculation basis (illustrative) for CO₂ avoidance:
. Replacement natural gas (process heat): 0.201 kg CO₂/kWh
. Replacement diesel (mobility): 3.18 kg CO₂/liter
. H₂ from natural gas reforming: 10-12 kg CO₂/kg H₂
. Green H₂ (HydSun): assumed 0 kg CO₂/kg H₂ at the point of production when powered by renewable electricity (lifecycle depends on system boundaries)
. Tree CO₂ sequestration: ~12.5 kg CO₂/year (average deciduous tree)
Use our online CO₂ calculator: To the interactive yield and CO₂ calculator
Corporate CO₂ footprint: How HydSun can reduce emissions
Corporate Carbon Footprint (CCF) according to GHG Protocol
Scope 1 (direct emissions):
Emissions from the company’s own sources (boilers, vehicle fleet, production processes)
HydSun reduction: substitution of natural gas with H₂ (up to -100% direct CO₂ at point of use), H₂ fuel cell fleet (up to -100% direct CO₂ at point of use)
Typical savings: 60-90% of Scope 1 emissions
Scope 2 (indirect energy emissions):
Emissions from purchased electricity, steam, heat
HydSun reduction: Own production of green solar power (755-1,546 MWh/year per plant), CHP for heat/electricity
Typical savings: 40-70% of Scope 2 emissions
Scope 3 (indirect emissions value chain):
Emissions from logistics, business travel, suppliers
HydSun reduction: H₂ truck fleets, local O₂ production (potentially reduced transportation emissions)
Typical savings: 10-25% of Scope 3 emissions (logistics)
Total reduction in carbon footprint: 35-65% depending on the initial situation and scope of integration
CO₂ footprint example: food manufacturer
Initial situation (before HydSun):
. Annual production: 50,000 tons of food
. Energy consumption: 2,000 MWh electricity + 2,000 MWh natural gas
. O₂ demand: 100 t/year (externally sourced)
. Vehicle fleet: 20 diesel trucks (50,000 km/year each)
. Total CO₂ footprint: 1,925 t CO₂/year
After HydSun integration (50-solar tree plant):
. Own solar power production: 755 MWh/year → -302 t CO₂
. H₂ substitution of natural gas (process heat): 1,173 MWh th → -236 t CO₂
. O₂ on-site production: 285 t/year → -14 t CO₂ (logistics, indicative)
. H₂ trucks (5 of 20 converted): → -160 t CO₂ (indicative)
. Total CO₂ reduction: 712 t CO₂/year (-37%)
. New CO₂ footprint: 1,213 t CO₂/year
Financial benefits:
. CO₂ cost impact 2025: 39,160 EUR/year (indicative)
. CO₂ cost impact 2030: 106,800 EUR/year (indicative)
. Energy cost reduction: 190,000-270,000 EUR/year
. Total savings: 229,000-377,000 EUR/year (illustrative)
CO₂ meter & CO₂ detector: Monitoring for systems
HydSun CO₂ monitoring system
Integrated measurement technology for CO₂ balancing:
HydSun systems have professional SCADA systems (Supervisory Control and Data Acquisition) with real-time recording of all relevant parameters for CO₂ balancing in accordance with the GHG Protocol and ISO 14064.
Captured parameters:
. Energy: PV production (kWh), electrolysis consumption (kWh), grid feed-in/purchase (kWh)
. Production: H₂ quantity (kg/day), O₂ quantity (kg/day), purity (% H₂/O₂)
. Operating data: Stack temperature, pressure (bar), flow rate (Nm/h), availability (%)
. CO₂ equivalents: Avoided emissions (t CO₂eq), cumulative and annual
CO₂ meter types in HydSun systems:
. NDIR-CO₂ sensors (Non-Dispersive Infrared): Air quality measurement in operating rooms (0-5,000 ppm)
. Energy meters: Bidirectional smart meters (MID-certified) for electricity flows
. Mass flow meter: Coriolis flow meter for H₂/O₂ (0.5% accuracy)
. Online dashboard: Web-based visualization with CO₂ savings tracking
CO₂ detector safety system:
CO₂ detectors are installed in electrolysis containers and H₂ storage areas in accordance with applicable standards and project-specific safety concepts. They can trigger an alarm in the event of unusual CO₂ concentrations (>1,000 ppm) and help protect personnel from the risk of asphyxia in enclosed spaces.
Reporting & certification:
. Automatic monthly/annual CO₂ balance reports
. CSRD-compliant ESG reporting interface (Corporate Sustainability Reporting Directive)
. GHG quota documentation for filling stations ( 37a BImSchG)
. EU taxonomy evidence for sustainable investments
Practical scenarios: Reducing CO₂ emissions in various sectors
Scenario 1: Municipal public transport – decarbonizing buses
Initial situation: City with 20 diesel buses (500,000 l diesel/year)
CO₂ emissions status quo:
. Diesel: 500,000 L 2.65 kg CO₂/L = 1,325 t CO₂/year
. NOx emissions: 15 t/year
. Particulate matter (PM10): 0.5 t/year
After conversion to H₂ buses with HydSun supply:
. H₂ demand: 80,000 kg/year (20 buses 8 kg/100 km 50,000 km)
. HydSun systems: 12 10-Solarbume (total: 90,552 kg H₂/year production)
. Direct CO₂ emissions at point of use (H₂ buses): ~0 t CO₂/year
. CO₂ reduction: 1,325 t CO₂/year (up to -100% vs. baseline)
. NOx reduction: 15 t/year (-100%)
. Particulate matter reduction: 0.5 t/year (-100%)
Financial impact (illustrative):
. Indicative CO₂ cost impact 2025: 72,875 EUR/year
. Indicative CO₂ cost impact 2030: 198,750 EUR/year
. Fuel cost comparison: 300,000-450,000 EUR/year (H₂ 5 EUR/kg vs. diesel 1.50 EUR/L)
Scenario 2: Industrial process heat – replace natural gas
Initial situation: Production company (2,000 MWh process heat/year from natural gas)
CO₂ emissions status quo:
. Natural gas: 200,000 m/year = 2,000 MWh
. CO₂ emission factor natural gas: 0.201 kg CO₂/kWh
. Total: 402 t CO₂/year
After HydSun integration (50-Solarbume + H₂-CHP):
. H₂ production: 35,555 kg/year = 1,173 MWh thermal
. H₂-SOFC CHP: 60% electrical + 30% thermal = 352 MWh el + 352 MWh th
. Additional solar heat: 200 MWh th (solar thermal integration)
. Residual natural gas demand: 1,448 MWh (72% reduction)
. New CO₂ emissions: 291 t CO₂/year
. CO₂ reduction: 111 t CO₂/year (-28%)
With full expansion (6 50-solarbume systems):
. H₂ production: 213,330 kg/year = 7,040 MWh thermal
. Direct CO₂ emissions at point of use (illustrative): ~0 t CO₂/year
. CO₂ reduction: 402 t CO₂/year (up to -100% vs. baseline)
Indicative CO₂ cost impact:
. 2025: EUR 22,110/year (full expansion)
. 2030: EUR 60,300/year (full expansion)
Scenario 3: Logistics – decarbonizing the truck fleet
Initial situation: Freight forwarder with 50 diesel trucks (40 t total weight)
CO₂ emissions status quo:
. Annual mileage: 2.5 million km (50 trucks 50,000 km)
. Diesel consumption: 32 L/100 km → 800,000 L/year
. CO₂ emissions: 2,120 t CO₂/year
After conversion to H₂ trucks (25 of 50):
. H₂ truck consumption: 8 kg H₂/100 km
. H₂ consumption: 100,000 kg/year (25 trucks 50,000 km 8 kg/100 km)
. HydSun supply: 15 10-Solarbume (total: 113,220 kg H₂/year)
. Direct CO₂ emissions at point of use (H₂ truck, illustrative): ~0 t CO₂
. Diesel trucks (remaining): 1,060 t CO₂/year
. Total CO₂ emissions (new): 1,060 t CO₂/year
. CO₂ reduction: 1,060 t CO₂/year (-50%)
Financial impact (illustrative):
. Indicative CO₂ cost impact 2025: 58,300 EUR/year
. Indicative CO₂ cost impact 2030: 159,000 EUR/year
. Fuel cost advantage: 200,000-400,000 EUR/year
. Toll reduction: EUR 50,000/year (CO₂ class bonus)
Reduce CO₂ costs: Strategies for companies
5 strategies for reducing CO₂ emissions with HydSun
1. Substitution of fossil fuels
Replace natural gas, heating oil and diesel with green hydrogen from HydSun systems. This can eliminate direct CO₂ emissions at point of use (Scope 1), depending on the baseline and system boundaries.
Savings (illustrative): 0.201 kg CO₂/kWh (natural gas) → assumed 0 kg CO₂/kWh (H₂ at point of use)
Indicative CO₂ cost impact 2030: 30 EUR/MWh natural gas
2. Generate your own electricity with solar panels
Produce your own solar power (755-1,546 MWh/year per system) and reduce grid consumption. This lowers Scope 2 emissions and can reduce the CO₂ component in the electricity price (depending on contract and accounting method).
Savings (illustrative): 0.420 kg CO₂/kWh (German electricity mix 2024) → assumed 0 kg CO₂/kWh at point of generation (solar; lifecycle depends on boundaries)
CO₂ cost equivalent (indicative): 63 EUR/MWh electricity purchase (2030)
3. On-site O₂ production (logistics emissions)
Reduce CO₂ emissions from O₂ transportation (truck delivery of liquid oxygen). HydSun produces O₂ directly on site.
Savings (illustrative): ~0.14 kg CO₂/kg O₂ (transportation) → 0 kg CO₂/kg O₂ (on-site logistics)
Typical savings: 5,000-15,000 EUR/year (logistics costs + CO₂ cost impact)
4. Fleet decarbonization
Operate trucks, buses, forklifts with green hydrogen from your own production. Use GHG quota marketing (37a BImSchG) for additional emissions.
Savings (illustrative): 3.18 kg CO₂/L diesel → assumed 0 kg CO₂ at point of use (H₂)
GHG quota (indicative): 300-500 EUR/t CO₂eq avoided
5. CSRD-compliant ESG reporting
Improve your ESG rating through measurable CO₂ reduction. This can support financing discussions (e.g., green loans; any interest advantage depends on lender criteria and documentation) and increase attractiveness for sustainable investors.
Advantage: Access to green financing, better conditions for EU taxonomy-compliant projects
CO₂ emissions Germany projection: HydSun scaling 2030
Illustrative scenario: 1,000 HydSun systems nationwide by 2030
Scenario: 1,000 100-solarbume plants in Germany (illustrative)
Production capacity:
. H₂ production: 72,865 t/year (1,000 plants)
. O₂ production: 584,953 tons/year
. Solar power: 3,572 GWh/year (0.7% of German electricity consumption)
CO₂ reduction:
. Direct avoidance: 1.46 million tons of CO₂/year
. Corresponds to: 117 million trees or CO₂ emissions of 730,000 cars
. Share of German total CO₂ emissions: 0.22%
. Contribution to the 2030 reduction target (235 million tons): 0.62%
Sectoral impact:
. Transport: 364,325 H₂ cars or 7,286 H₂ buses supplied
. Industry: process heat for 1,460 production sites (2,000 MWh/year each)
. Health: O₂ supply for 11,700 hospitals/nursing homes
. Energy: 3.6 TWh seasonal heat storage for dark doldrums
Economic dimension:
. CAPEX investment: EUR 14.7 billion (gross)
. Funding (40%): -EUR 5.9 billion
. Net investment: EUR 8.8 billion
. Annual CO₂ cost impact (2030): EUR 219-292 million (indicative)
. Jobs: 18,000-25,000 (construction, operation, maintenance)
Realistic target by 2030: 500-1,000 systems
CO₂ reduction contribution: 0.73-1.46 million t CO₂/year (-0.11% to -0.22% of total German CO₂ emissions)
Reduce CO₂ emissions now: Your path toward climate goals
No-obligation CO₂ balance analysis for your company (subject to availability)
Determine the CO₂ reduction potential of your company with HydSun technology. Our experts can analyze:
- ✓ CO₂ footprint analysis (Scope 1+2+3 according to the GHG Protocol)
- ✓ CO₂ reduction potential through H₂/O₂ integration (t CO₂/year)
- ✓ Indicative CO₂ cost impact 2025-2040 (cumulative)
- ✓ CO₂ calculator with scenario-based amortization calculation
- ✓ CSRD/ESG reporting concept
- ✓ Funding check (IPCEI hydrogen, KfW, state funding; subject to eligibility/approvals)
Required input data:
. Energy consumption (MWh electricity/year, MWh heat/year)
. Current CO₂ emissions (t CO₂eq/year, if known)
. Vehicle fleet (number of vehicles, annual mileage)
. O₂ demand (t/year, if available)
. Industry & number of employees
Output CO₂ balance analysis:
. Individual CO₂ calculator with scenario comparison
. Roadmap to climate neutrality (2030/2035/2040)
. Business case with ROI, NPV, CO₂ cost impact
. Technical dimensioning (plant size, H₂/O₂ quantities)
. Implementation schedule (12-18 months)
✓ Request a CO₂ balance analysis now
Contact:
info@hydsun.info | Subject: „CO₂ balance analysis request“