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.

STEP 1

See the full picture

Retrofits + assets + digital in one stack

STEP 2

Assess your site

Which building/park/campus fits which measures?

STEP 3

Pick a model

EPC, co-investment, or EMC-style savings share

STEP 4

Build & hand over

Design → install → test → acceptance

STEP 5

Digital operations

Platform, AI tuning, carbon accounting

STEP 6

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

DimensionEPC turnkeyCo-investmentEMC / shared savings
CapexOwner funds allZero/low capexZero capex
Asset ownershipOwnerInvestor; transfer laterESCO during term; then owner
RiskOwner bearsInvestor bears mostESCO bears savings risk
ReturnsAll to ownerShared by contractShared savings split
Best forFunded owners who want assetsZero upfront, better tariffs/savingsPublic sector, tight cashflow
Contract termEnds at handoverOften 20–25 yearsOften 5–10 years

Project journey

1

Discovery

Needs and service overview

2

Site survey

On-site data collection

3

Design

Technical solution and business case

4

Contract

Model and commercial terms

5

Construction

Install, cabling, commissioning

6

Commissioning

Testing and performance check

7

Go-live

Data onboarding and tuning

8

Operate & optimize

O&M, AI, carbon assets

Typical retrofit ROI

Distributed solar

Capex3.5–5.0 CNY/Wp
Savings / yieldSave 50–80% on self-use power
Payback4–7 years

25-year generation life

Storage

Capex1.0–1.5 CNY/Wh
Savings / yieldArbitrage + DR
Payback4–6 years

IRR often 12–20%

HVAC retrofit

Capex50–150 CNY/m²
Savings / yield15–40% savings
Payback2–5 years

Comfort + lower cost

LED

Capex8–25 CNY/m²
Savings / yield50–75% lighting kWh
Payback1–2.5 years

Fastest payback

Chargers

Capex3k–100k CNY/post
Savings / yieldService fee + solar/storage synergy
Payback2–5 years

>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.

Still stuck?

Our team can help with retrofits, investment models, and digital platforms.