Net-zero knowledge hub
Detailed Q&A answers below are in Chinese (authoritative). An English translation of the full corpus is being prepared.
Retrofits, new-energy investment, and digital platforms—
90+ answers and 35 glossary terms in one place.
Popular questions
Six steps across our services
From discovery to ongoing returns—end to end.
See the full picture
Retrofits + assets + digital in one stack
Assess your site
Which building/park/campus fits which measures?
Pick a model
EPC, co-investment, or EMC-style savings share
Build & hand over
Design → install → test → acceptance
Digital operations
Platform, AI tuning, carbon accounting
Monetize
Power, DR, carbon, RECs—stacked returns
Scenario FAQs
Each scenario has its own retrofit, investment, and operations playbook.
At a glance
Compare models, follow the journey, and see ROI signals.
EPC vs co-investment vs EMC
| Dimension | EPC turnkey | Co-investment | EMC / shared savings |
|---|---|---|---|
| Capex | Owner funds all | Zero/low capex | Zero capex |
| Asset ownership | Owner | Investor; transfer later | ESCO during term; then owner |
| Risk | Owner bears | Investor bears most | ESCO bears savings risk |
| Returns | All to owner | Shared by contract | Shared savings split |
| Best for | Funded owners who want assets | Zero upfront, better tariffs/savings | Public sector, tight cashflow |
| Contract term | Ends at handover | Often 20–25 years | Often 5–10 years |
Project journey
Discovery
Needs and service overview
Site survey
On-site data collection
Design
Technical solution and business case
Contract
Model and commercial terms
Construction
Install, cabling, commissioning
Commissioning
Testing and performance check
Go-live
Data onboarding and tuning
Operate & optimize
O&M, AI, carbon assets
Typical retrofit ROI
Distributed solar
25-year generation life
Storage
IRR often 12–20%
HVAC retrofit
Comfort + lower cost
LED
Fastest payback
Chargers
>12% daily utilization to break even
Six revenue streams
Self-use savings
PV covers local load before grid import
Export sales
Sell surplus PV to the grid
Peak–valley arbitrage
Charge low, discharge high
Demand response
Grid programs for flexible load
Carbon markets
CCER / inclusion mechanisms
RECs / green power
Certificates for ESG or trading
Glossary
35 core terms to navigate net-zero and energy finance.